Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the behavioral disclosure burden. It explains the effects of unread_only and chapter_ids, including the override behavior, which is useful. However, it does not disclose side effects, whether downloads are asynchronous, or any prerequisites such as authentication or existing library membership.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, front-loaded with the core action, and uses a clean Args list. Every sentence adds necessary information without repetition or filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the output schema exists and the parameter semantics are fully covered, the description is largely complete for invoking the tool correctly. The only minor gap is the lack of explicit context about when to use this tool versus the sibling tools, but the operation itself is well-specified.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate, and it does. Every parameter is explained with meaningful semantics: manga_id identifies the manga, count sets the number, unread_only filters to unread/undownloaded chapters, and chapter_ids explicitly overrides the other selection parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb ('Queue and trigger') and resource ('chapter downloads for a manga'), making the tool's function immediately clear. It is clearly distinguished from the sibling tools, which focus on status, library retrieval, and search/add operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies the tool is used to initiate chapter downloads, and the parameter behavior clarifies selection logic, but it does not explicitly state when to prefer this tool over siblings or provide exclusion conditions. The usage context is inferable rather than stated.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must carry the behavioral burden. It states the action (check) implying a read-only operation, which is useful, but does not disclose what information the tool returns or if there are any side effects. The description is minimal but sufficient for a status-checking tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that conveys the core purpose without any fluff. It is appropriately sized for a tool with no parameters and a simple function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (no parameters, no nested objects) and the presence of an output schema, which likely details return values, the description is complete enough for an agent to call it. It could briefly mention what information is returned (e.g., list of downloads, progress percentages), but the output schema may compensate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, so the description does not need to add parameter semantics. Baseline for zero parameters is 4, and the description accurately indicates the tool requires no arguments by not mentioning any.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool checks the download queue and active progress, identifying a specific verb and resource. It is distinct from siblings like suwayomi_download_chapters, which initiates downloads, so an agent can reasonably infer the difference, though it could explicitly mention that no modifications are made.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies it should be used to check download status, which is a common operation, but it does not explicitly state when to use this tool versus others. For instance, it does not mention that this is for monitoring rather than starting downloads, but the context is clear enough for an agent to infer.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. 'Fetch' implies a read-only operation, but it is never explicitly stated that this tool does not modify data or have side effects. The description also does not mention pagination, error handling, rate limits, or authentication requirements. The only behavioral detail given is the default limit of 50, which is a parameter, not a behavior. For a read operation with zero annotation coverage, this is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise: one purpose sentence followed by a compact Args list. Every line earns its place, with no filler or redundancy. The purpose is front-loaded, and the parameter details are formatted for easy scanning. This is exemplary efficiency.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple fetch operation with three parameters, the description covers all the input semantics clearly. The output schema is present, so return values are handled externally. However, it does not mention potential edge cases like empty results, total count, or pagination beyond the limit parameter. Given the simplicity and the presence of an output schema, this is adequate, though a note about result ordering or default behavior when search is null would enhance completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must fully explain the parameters. It does so effectively: each parameter (in_library_only, search, limit) is described with its meaning and examples (e.g., 'isekai', 'Latna', 'action' for search). It also clarifies the default for limit and the filtering behavior of in_library_only. This adds significant value beyond the bare schema, though it could go further by specifying search matching semantics (e.g., exact match vs. substring) or limit bounds.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a clear, specific statement: 'Fetch your manga/manhwa library state from Suwayumi.' This identifies the exact action (fetch) and resource (library state), distinguishing it from siblings like suwayumi_download_chapters and suwayumi_search_and_add, which perform different operations. The purpose is unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage by describing what the tool does, but it does not explicitly state when to choose this tool over the siblings. It lacks guidance on when to use this versus suwayumi_search_and_add (e.g., to view existing library) or the download tools. No exclusions or alternatives are mentioned, so the agent must infer context from the tool name and description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description must carry the full burden of behavioral disclosure. It discloses the main side effect (adding to library when auto_add_first is true) but does not mention potential errors, rate limits, or what happens when no match is found. The existence of an output schema helps, but the description itself is thin on behavioral nuance beyond the core action.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and front-loaded with the main purpose, followed by a clean arg list. Every sentence earns its place, with no fluff or redundancy. The structure is easy to scan and parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple search-and-add tool with an output schema, the description covers the core functionality and all parameters. It does not explain edge cases (e.g., behavior when auto_add_first is false, or how 'best matching' is determined), but these are minor. Overall it is sufficient for an agent to call the tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description fully compensates by explaining each parameter: query (search title), auto_add_first (marks top match as inLibrary), and limit (max results). This goes beyond the schema's bare types and defaults, giving the agent exactly what it needs to invoke correctly.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('Search') and the resource ('manga across your Suwayomi database'), and mentions the optional action of adding to the library. It is distinct from sibling tools like suwayomi_get_library (which only lists) and suwayomi_download_chapters (which handles downloads), so an agent can easily tell when 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.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies the primary use case: searching for manga and optionally adding it. However, it does not explicitly state when not to use it or point to alternatives (e.g., 'For browsing the library, use suwayomi_get_library'). The context is clear enough from the action and the sibling names, but explicit routing would be stronger.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.