ast-editor

by kambleakash0

Overview Schema Related Servers Score Discussions

Python

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Server Quality Checklist

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Latest release: v2.0.2
Disambiguation5/5
Each tool has a clearly distinct purpose with detailed descriptions that avoid overlap. Even similar tools like `replace_function` vs `replace_function_body` are well-differentiated by their scope.
Naming Consistency5/5
All tools follow a consistent verb_noun pattern in snake_case (e.g., add_field, delete_symbol, replace_value), making it easy to predict tool names.
Tool Count4/5
28 tools is on the higher side but appropriate for a comprehensive AST editor covering many fine-grained operations. The count is still manageable with clear naming.
Completeness4/5
The tool set covers a wide range of code editing needs: adding, deleting, replacing, and reading symbols, bodies, imports, comments, and config files. Minor gaps exist (e.g., no rename tool) but core workflows are well-supported.
Average 4.5/5 across 28 of 28 tools scored.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 0 commits in the last 12 weeks
- Last stable release on May 6, 2026
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
This repository is licensed under MIT License.
This repository includes a README.md file.
No tool usage detected in the last 30 days. Usage tracking helps demonstrate server value.
Tip: use the "Try in Browser" feature on the server page to seed initial usage.
This repository includes a glama.json configuration file.
If you are the author, simply .
If the server belongs to an organization, first add glama.json to the root of your repository:
```
{
  "$schema": "https://glama.ai/mcp/schemas/server.json",
  "maintainers": [
    "your-github-username"
  ]
}
```
Then . Browse examples.
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How to sync the server with GitHub?

Servers are automatically synced at least once per day, but you can also sync manually at any time to instantly update the server profile.

To manually sync the server, click the "Sync Server" button in the MCP server admin interface.

How is the quality score calculated?

The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).

Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.

Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).

Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.

Tool Scores

Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided. Description explains matching logic but does not mention side effects (file modification), error behavior, permissions, or return values. Critical behavioral aspects are missing.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Concise: a few sentences covering purpose, usage guidelines, and an example. No redundant information. Front-loaded with the main action.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Low parameter count and has output schema. Description covers purpose and usage but lacks behavioral details like modification effects, error handling, or return type. Adequate but with gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 0% description coverage. Description adds meaning: file_path is the source file, import_text is the exact line (stripped). Example clarifies format. However, it omits file_path constraints (e.g., relative/absolute path).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action (remove), resource (import statement), and context (from source file). It also explains matching logic and differentiates from remove_import_name, which is a sibling tool.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (remove unused import) and when not to use (remove one name from multi-name import), including the alternative tool name remove_import_name.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It discloses scoping to the target's body and error behavior. However, it does not mention return value, side effects beyond replacement, or authentication/permissions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with separate sections for purpose, usage guidance, and an example. Each sentence adds value without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity and lack of schema parameter descriptions, the description covers scoping, error conditions, and usage context. It does not explain the output schema, but that is acceptable per rules. Slight gap in parameter semantics for file_path.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% with no parameter descriptions. The example illustrates target, old_snippet, and new_snippet, but file_path is not explained. Agents must infer from parameter names, which is insufficient for clarity.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it replaces a byte-identical snippet inside a named function/method body, scoped to avoid accidental matches elsewhere. It distinguishes from sibling tools like replace_function_body and includes an example.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly describes when to use (changing a specific statement inside a large function body) and when not to use (entire body -> replace_function_body, ambiguous sub-expression -> default Edit tool). Also notes error conditions for multiple/not found snippets.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral traits. It explains basic operation (inserting a sibling at a specified position) and the types of symbols covered. However, it lacks details on side effects (e.g., ordering of multiple siblings), error handling (e.g., target not found), or reversibility, which is insufficient for a tool without annotation support.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise with two succinct paragraphs plus an example. Every sentence adds value: first sentence states purpose, second provides usage guidelines and alternatives, and the example demonstrates typical usage. No redundant or unnecessary content.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity of the tool (4 required parameters, many sibling tools), the description covers essential aspects: purpose, usage criteria, alternatives, and an example. It does not describe the output schema, but that is not required. The only minor gap is lack of parameter semantics for all parameters, but overall it provides sufficient context for an agent to use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0% parameter description coverage. The description adds meaning for the 'position' parameter (before/after) and 'target' (named symbol). It also clarifies 'content' via examples. However, 'file_path' and the exact format of 'target' and 'content' are not explicitly defined. While it improves upon the bare schema, it does not fully compensate for the lack of parameter descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool inserts content as a sibling of a named symbol, specifying position options 'before' or 'after'. It differentiates from sibling tools by naming alternatives like add_top_level and insert_in_body, making the purpose unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly provides when-to-use scenarios (precise placement relative to a top-level symbol) and when-not-to-use scenarios (appending to end of file -> use add_top_level; inserting inside function body -> use insert_in_body). It names specific alternative tools, offering clear guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It describes the operation but lacks details on error handling, idempotency, or side effects. Acceptable but not exemplary.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Concise and well-structured: purpose, usage guidelines, and example in few sentences without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given low schema coverage and no annotations, the description covers purpose and usage well. Missing parameter descriptions, but overall sufficient for a simple tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%. The description partially compensates via an example that explains 'target' and 'content' but does not describe 'file_path'. Adequate but incomplete.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('replace') and resource ('function definition'), and clearly distinguishes from sibling tools like replace_function_body and replace_signature.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (top-to-bottom rewrite) and when not to use (e.g., only body change -> use replace_function_body), with an example.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description indicates it replaces a value (implied mutation) but does not disclose potential side effects like file backup, error handling for missing files, or formatting preservation. With no annotations, it partially covers behavioral traits but lacks depth.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Three concise sentences plus a focused example. No unnecessary words, efficiently conveys core information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers main use case and boundaries. Output schema is present, so return values are likely documented externally. Missing details like error handling or file validation, but overall adequate for a simple replace tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 0% description coverage, so description must explain parameters. It provides an example clarifying target (dot-separated path) and content (new value with quotes) but does not explain file_path. Adds moderate meaning beyond schema but incompletely compensates.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states 'Replace the value of an existing key' and specifies file types (JSON, YAML, TOML). It distinguishes from siblings like add_key and array operations, making the tool's purpose unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly tells when to use (key exists, update value) and when not to use (key missing -> add_key, array modification -> append_to_array/remove_from_array). Provides clear alternatives for each exclusion.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses key behaviors: duplicate skipping, placement after existing imports, and supports multiple languages via examples. Lacks mention of file modification guarantee or permissions, but given no annotations, it is quite transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections for when to use, when not, and examples. Could be slightly more concise, but overall efficient and easy to parse.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers usage, behavior, and alternatives. With no output schema details in description but presence of output schema noted, the description is nearly complete. Could mention return behavior for completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, so description must explain parameters. While import_text is illustrated with examples, file_path is not explicitly described. The examples partially compensate, but direct parameter descriptions are missing.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool adds import statements to source files, skips duplicates, and specifies placement. It explicitly distinguishes from the sibling add_import_name by describing when to use each.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'Use this when' and 'Don't use this when' guidelines, including a direct reference to the alternative tool add_import_name for multi-name imports. This helps the agent decide correctly.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description declares idempotency ('skips if the name is already present'), which is a key behavioral trait. It also gives language-specific examples (Python, JS/TS). With no annotations, the description covers the essential safety property well, though it does not mention error conditions or side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise, uses bullet points for language-specific syntax, and front-loads the core action and idempotency. Every sentence adds value, with no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity and the presence of an output schema (not shown), the description covers the main functionality, idempotency, and usage boundaries. It does not detail return values or error messages, but those may be in the output schema. Overall, it is sufficiently complete for this tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0% description coverage, and the description adds only minimal context beyond parameter names. Examples show plausible values (e.g., module='typing', name='Optional') but do not explain constraints, formats, or relationships between parameters. For 3 required string parameters, more guidance is expected.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action: 'Add a name to an existing named-import statement.' It identifies the specific verb (add) and resource (import name), and distinguishes from sibling tools like 'add_import' and 'remove_import_name' by focusing on adding a single name to an existing import.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit when-to-use and when-not-to-use guidance, including alternative tools ('add_import') and scenarios (default vs. namespace imports). This helps the AI agent decide correctly.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It explains position behavior (bottom default, top after preamble) and the reverse-order problem. However, it does not mention error handling or output format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections, bullet points, and examples. Every sentence adds value, but slightly lengthy for a concise description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers what the tool does, where content is placed, and when to use alternatives. Output schema exists, so return values need not be described. Lacks details on file validation and error cases.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%. Description explains the 'position' parameter thoroughly with examples and usage rationale, but 'file_path' and 'content' are only defined by type in schema, lacking additional context such as path requirements or content format.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Insert top-level content into the file' and lists specific types (function, class, constant, type alias), differentiating it from sibling tools like add_method or add_field.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides 'Use this when' and 'Don't use this when' sections, naming alternative tools (insert_before, insert_after, add_method, add_field, etc.) and specific scenarios.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavior. It explains how 'target' works per format and gives examples, but does not cover side effects (e.g., file modification in place, duplicate handling, ordering) or error conditions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with a clear first sentence, separate sections for formats, usage, and examples. It is informative but could be slightly more compact without losing clarity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity, the description covers essential aspects: formats, parameter interpretation, usage guidelines, and examples. It lacks some behavioral details, but overall is adequate for the task.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Despite 0% schema description coverage, the description adds meaning for 'target' (dotted path vs variable name) and 'value' (literal string quoting). However, 'file_path' is left unexplained, though it is fairly self-explanatory.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it appends a literal value to an array/list, specifies supported formats (JSON, YAML, TOML, Python), and distinguishes itself from the sibling 'add_key' by explicitly noting when not to use it.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit when-to-use ('add an item to a list') and when-not-to-use ('adding a key-value pair -> use add_key'), with a direct alternative mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Describes default behavior of removing leading comment and the option to keep it. Explains rationale (avoid orphaned doc). No annotations provided, so description takes full responsibility. Could mention error handling or idempotency, but sufficient for a delete operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured: concise first sentence, then details, then usage guide, then examples. Every sentence adds value. Could slightly reduce length, but it's efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations and an output schema (not shown), the description covers essential behavior, usage guidelines, and parameter hints. Lacks explicit return value info but output schema presumably handles that. Good for a delete tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 0% description coverage, so description must compensate. It gives examples of target syntax (e.g., 'LRUCache.old_method') and explains include_leading_comments, but file_path is not described. Compensates partially but lacks explicit format guidance.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states it deletes a function or class definition including decorators. Explicitly distinguishes from sibling tools like delete_key, remove_import, and delete_in_body in the usage guidelines.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'Use this when' and 'Don't use this when' sections with alternative tool names. Examples further clarify appropriate usage.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Covers the core behavior: removes first matching element, works for multiple file types, uses stripped equality. Lacks explicit mention that it modifies the file. No annotations to contradict.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with clear paragraphs, usage guidelines, and examples. Slightly verbose but efficient for the complexity covered.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Provides enough detail for a complex tool, missing only explicit file_path explanation and side-effects. Output schema exists to cover return values, reducing burden.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Explains target and value_match well, including examples. But file_path is not described anywhere in the description, leaving a gap for 0% schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Explicitly states it removes the first element matching value_match from an array/list. Distinguishes from sibling delete_key (removes whole key) and append_to_array. Specifies stripped text equality.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'Use this when' and 'Don't use this when' guidance, naming the alternative tool (delete_key). Clearly defines the context of use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, but description discloses insertion at top and implies formatting via example. Does not detail error handling or overwrite behavior, but is generally transparent for a field addition tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Concise, well-structured with bullet points and example. No redundant sentences; every line adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Low complexity tool with output schema present; description covers purpose, usage, and gives example. Lacks return value info but output schema likely covers it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 0% description coverage; description only partially compensates via example (shows class_target and content). file_path is not explicitly described, leaving slight ambiguity.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool adds a field/attribute/member at the top of a class body, following fields-before-methods convention. It differentiates from sibling add_method by mentioning it's for methods, not fields.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit 'Use this when' and 'Don't use this when' with a specific alternative tool (add_method). Provides language-specific contexts (Python, JS/TS, C++), making it clear when to invoke.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description adequately conveys the tool's behavior: removes a parameter and leaves the body untouched. It does not discuss error cases like missing parameter, but the example is clear.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences plus an example, front-loaded with purpose, followed by usage guidelines. No redundant information; every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity, the description covers the main use case and provides an example. It does not explicitly state that the tool modifies the file, but that is implied. Output schema exists, so return values are not required.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%. The description provides example values for target and parameter_name, but does not explain file_path or the format of target. It adds some meaning but not comprehensive.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the action (remove a parameter), the resource (function signature), and what it does not do (leaves body untouched). Example further clarifies usage.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (remove one parameter) and when not to use (replace whole signature) with a direct sibling alternative (replace_signature).
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so description carries full burden. It clearly states what is preserved (signature, decorators) but does not mention error handling or side effects like file modification.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Concise, well-structured: clear purpose, usage guidelines, and a concrete example. No unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations and 0% schema coverage, the description covers core behavior and usage. However, it omits details on file_path, error cases, and return value, though an output schema exists and could be referenced.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% (no descriptions in schema), but the parameter names are self-explanatory. The description provides an example that illustrates usage of target and content, partially compensating for lack of formal definitions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Describes the tool with a specific verb 'replace' and resource 'body of a function', and distinguishes from siblings like replace_function and replace_signature by specifying it preserves signature and decorators.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use ('changing the implementation while keeping interface stable') and when not to use ('changing parameters or return type') with specific alternative tools mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description notes that the body is left untouched and provides a default position. However, it does not disclose error conditions, permissions, or other side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise with about five sentences, front-loads the main action, and includes a helpful example without unnecessary verbiage.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's low complexity and the presence of an output schema, the description adequately covers usage, behavior, and examples, making it complete for effective tool selection.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 0% schema coverage, the description explains target, parameter, and position via example and default. It does not explain file_path, but covers 3 of 4 parameters meaningfully.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool adds a parameter to a function signature at a specified position, distinguishing it from siblings like replace_signature and remove_parameter.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
It explicitly states when to use (adding one or two parameters) and when not to (replacing entire signature or changing body), and names alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It discloses scope (target's body), raises on not-found or duplicate snippet, and advises adding context. Missing details on side effects (e.g., file modification) or permissions, but otherwise informative.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Description is concise (under 150 words) with clear sections. Examples are helpful but slightly redundant; could trim 'Don't use this' repetition. Still, front-loaded structure aids quick understanding.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 3 required params, no annotations, and an output schema (not described), the description covers key behaviors (raises conditions, scoping), usage guidance, and examples. Does not explain return value or error handling beyond raises, but is sufficient for correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 0% coverage (no descriptions), but the description explains parameters via examples: 'target' is the function/method name, 'snippet' is the byte-identical text. 'file_path' is not elaborated but is standard. Examples add meaning beyond schema names.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the action (delete a byte-identical snippet), target (inside a named function/method body), and distinguishes from sibling delete_symbol by specifying deletion of an entire function/class. The verb 'delete' and resource 'snippet inside function body' are specific and unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides 'Use this when' and 'Don't use this when' sections, including an alternative (delete_symbol). The examples give concrete scenarios (removing a mount call, removing a key from an inline object arg), guiding effective use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It details behavior for each op: add raises if comment exists, replace inserts if none, remove ignores comment. Also notes comment marker requirements. Misses potential error conditions or idempotency, but covers core behavior well.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Reasonably concise given the three-operation scope. Structured with sections for op details, comment syntax, usage guidelines, and examples. Each sentence adds value, though could be slightly trimmed without losing clarity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With an output schema present, description doesn't need return value details. Covers operation semantics, comment syntax prerequisites, and usage conditions. Does not mention concurrency or performance, but acceptable for a single-file editing tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but description thoroughly explains 'op' with three enumerated values and their semantics. Requires 'comment' only for add/replace, demonstrated in examples. Lacks detail on 'file_path' and 'target' formats, but examples and context imply they follow symbol naming conventions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states the tool edits the contiguous leading-comment block above a named symbol, with three operations (add/replace/remove). Distinguishes from sibling tools like replace_docstring and replace_in_body by explicitly contrasting use cases.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly says when to use ('You want to document, update, or delete a leading comment') and when not to use ('You want a Python docstring' -> use replace_docstring; 'edit text inside the function body' -> use replace_in_body). Provides clear alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It declares the operation as read-only, which is critical. It doesn't elaborate on side effects or permissions, but given the simplicity of a list operation, this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise, front-loads the action, and uses a clear structure: what it does, usage guidance, and an example. Every sentence adds value with no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the output schema exists (not shown but indicated), the description doesn't need to detail return values. It covers purpose, parameter semantics, usage context, and read-only nature, making it fully adequate for this simple tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, so description must compensate. It provides an example path and lists supported languages. However, it lacks details on path format (absolute vs relative) or validation rules, leaving some ambiguity for the agent.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns a formatted outline of top-level symbols from supported source files with line numbers. It distinguishes itself from sibling tools like 'read_symbol' by specifying it lists all symbols rather than reading a specific one.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides when to use (before editing an unfamiliar file) and when not to use (when exact target name is known), positioning it as a best practice first call. This directly helps the agent choose among siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses edge cases: automatic removal of the entire import line when the last name is removed and no other bindings exist, and error on invalid fragment. Since no annotations are provided, this adds necessary behavioral context. Minor omission: doesn't specify whether the operation requires file write permissions or is reversible.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise, structured with bullet points and an example block. The main action is stated first, and every sentence adds value. No unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simple input schema (3 required params) and the existence of an output schema (so return values are documented), the description provides sufficient context: behavior, edge cases, examples, and usage guidance. It is complete for an agent to use this tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but description provides concrete examples (Python and TS) that clarify the 'module' and 'name' parameters. However, 'file_path' is not explained, and the description lacks explicit definitions for each parameter. The examples partly compensate but not fully.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool removes a name from a named-import statement, with language-specific examples. It explicitly distinguishes from the sibling 'remove_import' by contrasting single-name removal vs. entire line removal.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'Use this when' and 'Don't use this when' instructions, naming the alternative tool 'remove_import'. This helps the agent select the correct tool for the task.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden. It discloses the insertion position ('at the end of a class body') and provides an example showing indentation. However, it does not mention error handling or side effects (e.g., file modification).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Extremely concise: two lines of usage guidance plus a short example. Every sentence adds value, and the structure is easy to scan. No wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 3 required parameters and an output schema (not described here), the description covers the main action and provides a clear example. However, it lacks details on prerequisites (e.g., class must exist) and error scenarios. The example partially compensates.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%; the description compensates with an example that illustrates usage of all three parameters ('file_path', 'class_target', 'content') and their roles. No explicit parameter descriptions, but the example is sufficient for understanding.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Add'), a clear resource ('method'), and location ('at the end of a class body'). It distinguishes from sibling tools like 'add_field' and 'add_top_level' by explicitly stating when not to use them.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use ('adding a method to an existing class') and when not to use, naming alternative tools ('add_field', 'add_top_level'). Includes an example that clarifies typical usage.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It describes the operation as replace/insert, implicitly a write action, and specifies the new_docstring must be a valid Python string literal with triple quotes. However, it lacks explicit mention of overwriting behavior or error conditions, though the core behavior is clear.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is succinct with about 5 sentences plus an example, no fluff. Well-structured: purpose, format note, usage guidelines, example. Every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with 3 parameters and an output schema (which likely covers return info), the description covers purpose, format, when-to-use, and differentiation. It lacks explanation of file_path but that is typical. Almost complete for a focused editing tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must explain parameters. It explains target (function/class name with example) and new_docstring (must be valid Python string literal with triple quotes). file_path is not explained but is standard. This adds meaning beyond the schema's type-only definitions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool replaces or inserts a Python docstring on a function or class, and specifies it is Python-only. It distinguishes from sibling tools like replace_leading_comment and indicates no equivalent for non-Python files.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (add/update docstring without touching body) and when not to use (editing # comment above, use replace_leading_comment; non-Python files have no equivalent). Provides clear context for alternative selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Description discloses that it preserves body and decorators, a key behavioral trait. With no annotations, it provides an example but could mention potential side effects like file modification. Still, it is informative.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Description is compact: one sentence for purpose, one for usage guidelines, and an example. No redundancy, well-structured.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With 3 params and no annotations, the description covers usage and provides an example. Output schema exists to explain return values. Could mention return value or error handling, but overall sufficient.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 3 required params with 0% description coverage. Description adds value through an example showing target format (function path) and new_signature (Python code with indentation). Does not explicitly describe file_path, but it's self-explanatory.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states 'Replace only the signature of a function', specifying verb and resource. It distinguishes from siblings like replace_function and add_parameter by explicitly naming them.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (changing parameters, return type, function name) and when not to (changing body -> use replace_function, adding/removing one parameter -> use add_parameter/remove_parameter). Provides clear guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description explains per-type behavior (e.g., parent_target for JSON vs Python) and syntax requirements for value. It does not cover error cases like missing parent_target, but overall is transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections, but slightly verbose with repeated examples. Could be trimmed slightly without losing clarity. Still, every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers all necessary aspects: purpose, parameters, usage rules, examples, and file-specific behavior. Output schema exists, so return values need no explanation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema lacks descriptions (0% coverage). The description compensates fully by explaining parent_target (dotted path vs variable), value (literal expression in target syntax), and key. Examples clarify usage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool adds a key-value pair to dict-like containers in JSON, YAML, TOML, and Python files. It distinguishes itself from siblings like replace_value and append_to_array by specifying scenarios.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly provides when to use (key does not exist) and when not to use (key exists, or adding to array), and names alternative tools. This is exemplary guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Describes the deletion action and comma removal for JSON/JS/TS, but does not explicitly state that the file is modified in place or that the action is irreversible. With no annotations, the burden is on the description, and it largely meets it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with sections, examples, and usage guidelines. Every sentence adds value, no unnecessary repetition.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers all relevant aspects: operation, file types, usage context, examples. Output schema exists so return value explanation is not needed. Complete for the given complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but the description thoroughly explains the 'target' parameter with file-specific syntax and examples. 'file_path' is not explained, though its purpose is somewhat obvious. Overall, adds significant meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it deletes a key-value pair from dict-like containers, with specific file type support and examples. It distinguishes from siblings like remove_from_array and delete_in_body.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (remove an entire entry) and when not to use (list removal -> remove_from_array, inline object -> delete_in_body), with alternative tool names.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden and explicitly states 'Read-only', implying no modification. It details the return format as a multi-line string, but lacks specifics on error handling or file existence behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise, using bullet points and an example, with no unnecessary words. Every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter tool with a simple return type, the description covers purpose, usage, return format, and provides an example. It is complete given the presence of an output schema.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, so the description adds meaning. It explains the parameter 'file_path' through context and an example, clarifying its role as the file path to the source module.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description states 'Return all import statements in a source file as a multi-line string' with a clear verb and resource, and also notes 'Read-only', distinguishing it from sibling tools like add_import and remove_import.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicit 'Use this when' and 'Don't use this when' sections provide clear context and alternatives (add_import and remove_import), guiding correct selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior5/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must fully disclose behavior. It declares the tool as 'Read-only' and explains the three depth options in detail, including what each returns for different symbol types. Examples illustrate typical usage, ensuring the agent understands the tool's behavior and token savings.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections, bullet points, and a separate example list. It is front-loaded with the core purpose, then details depth options, usage guidelines, and concrete examples. Every sentence adds value without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given that the tool has three parameters and an existing output schema (so return values don't need explanation), the description covers all necessary aspects: purpose, when to use vs. alternatives, depth semantics, and examples. It is complete for an agent to select and invoke the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0% description coverage, so the description must compensate. It thoroughly explains the 'depth' parameter with semantic meaning and default value. However, the 'file_path' and 'target' parameters are not explicitly described; their meaning is only implied through examples. While the examples are helpful, a direct explanation of what 'target' represents (e.g., 'a dot-separated path to a symbol') would improve clarity.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description starts with 'Return source text for a single named symbol', which is a specific verb+resource. It explicitly differentiates from siblings by stating what it does not do (e.g., 'without reading the entire file') and contrasts with list_symbols and read_imports for different use cases.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance: 'Use this when: You need to read a specific symbol...' and 'Don't use this when: You need a structural overview... use list_symbols. You need to see the file's imports... use read_imports.' It also recommends picking the narrowest depth.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It discloses key behaviors: only one of at/after/before can be used, anchor match must be unique, error on multiple matches, caller responsible for formatting. Does not cover auth or rate limits but is comprehensive for the tool's scope.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with bullet points and examples. Front-loaded with main purpose and constraints. Every sentence adds value, no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (4 placement modes, 6 parameters), the description covers all necessary context: placement semantics, constraints, examples, and output schema existence. No major gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but description compensates by explaining each parameter (file_path, target, new_snippet, at, after, before) with detailed semantics and examples, adding significant value beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's function: inserting a snippet inside a function/method body with four placement options. It distinguishes itself from siblings by naming alternative tools like replace_function_body and add_top_level.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit guidance on when to use this tool (inserting into function body) and when not to (replacing body, adding top-level symbol, changing existing snippet), with named alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Behavior5/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses read-only, syntactic-only, no scope awareness, and potential for unrelated results. Also describes output format. With no annotations, description fully covers behavioral aspects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Concise, front-loaded with purpose, then limitations, usage guidelines, and example. Every sentence adds value with no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the presence of an output schema, the description adequately covers usage context, behavioral nuances, and parameter semantics. It is complete for this simple tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Despite 0% schema description coverage, the description explains the 'target' parameter with an example and implies 'file_path' as the source file. However, file_path is not explicitly described, and the example omits it.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns occurrences of an identifier in a source file as line entries, distinguishes from sibling code manipulation tools, and explains its syntactic-only nature.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (renaming/refactoring a symbol for quick survey) and when not to use (cross-file or scope-aware analysis), with a clear alternative (full language server).
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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