Hal Fr

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

Annotations already indicate safe read and open-world. Description adds behavioral details: routes to many tools, fills arguments, returns stable citation URIs. It does not mention rate limits or failure modes, but overall it 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.

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

Description is front-loaded with key guidance, includes a domain list, mechanism, and examples. It is informative but slightly verbose; still, every sentence adds value.

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 complexity (routing to many sources, no output schema), the description explains what it returns (structured answer with citations). It could mention error handling or output format details, but it is reasonably complete for an agent.

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?

Only one parameter 'question' is fully described in the schema (100% coverage). The description adds examples but does not provide new semantics or formatting details beyond the schema. Baseline of 3 is appropriate.

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 it handles factual queries about current/historical data from authoritative sources, returns structured answers with citations, and lists diverse domains. It distinguishes itself from web search and sibling tools like 'search'.

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?

Explicitly says 'PREFER OVER WEB SEARCH' and provides concrete examples of when to use (e.g., 'what is', 'look up', 'find'). It describes the internal mechanism of routing to 1423+ tools, giving the agent clear guidance on its scope.

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?

Annotations already indicate readOnlyHint=true and openWorldHint=true, so the description need not restate these. However, it adds no further behavioral context (e.g., result limits, query format expectations). The description is passable but not extra helpful.

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, clear sentence with no wasted words. For a simple lookup tool, this is appropriately concise and front-loaded, though it lacks structured breakdown.

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?

The tool is simple, but the description omits return value details, pagination, or result count expectations. With no output schema, the agent lacks essential completion context, making this minimally adequate.

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?

Only one of two parameters ('rows') has a schema description; 'query' is undocumented. The tool description does not clarify either parameter, failing to compensate for the 50% schema coverage gap.

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 'Author lookup (free-text query)' clearly specifies the action (lookup) and resource (author), and the 'free-text query' detail distinguishes it from sibling tools like 'search' or 'entity_profile' that may have different scopes.

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 provides no guidance on when to use this tool versus alternatives, such as 'search' or 'entity_profile', nor does it specify any prerequisites or exclusions. This leaves the agent without context for proper selection.

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?

Annotations declare readOnlyHint=true, openWorldHint=true, destructiveHint=false. The description adds that it pulls data from SEC EDGAR/XBRL for companies and FAERS/FDA for drugs, and returns paired data with citation URIs. No contradictions; fully transparent about behavior.

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 moderately long but front-loaded with the core purpose and use cases. Every sentence provides unique information (trigger phrases, type-specific details, efficiency claim). No redundancy, though slightly verbose in enumerating use cases.

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 tool with only 2 parameters and no output schema, the description fully covers what the tool does, when to use it, what data it retrieves, and the output format (paired data + URIs). No gaps given the simplicity and annotation support.

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 coverage is 100% (both params described). The description adds significant value by explaining what each type pulls (e.g., revenue, net income for company; adverse events, approvals for drug) and how to format values (tickers/CIKs vs drug names). This goes beyond the schema's basic descriptions.

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 it compares 2-5 companies or drugs side by side, specifying the exact data pulled for each type (financials vs adverse events). It distinguishes itself from siblings like entity_profile by emphasizing the multi-entity comparison capability.

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 explicitly lists trigger phrases (e.g., 'compare X and Y', 'X vs Y', 'stack up') and describes when the user wants tables/rankings. It mentions replacing 8-15 sequential calls, implying efficiency. However, it does not explicitly state when not to use this tool or name alternatives.

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?

Annotations already indicate readOnlyHint=true and destructiveHint=false. The description adds behavioral context about returning top-N most relevant tools with names+descriptions. It does not contradict annotations but could mention slight limitations like unknown relevance criteria.

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, well-structured paragraph that front-loads the main purpose. It lists usage scenarios, return type, and a call to action without wasted words. Every sentence adds value.

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 tool with 2 well-documented parameters and no output schema, the description covers purpose, usage, and return format adequately. Missing details about empty results or relevance scoring, but overall complete enough for effective use.

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 coverage is 100% with well-described parameters. The description adds examples for query and confirms limit defaults, but does not significantly augment meaning beyond what the schema already provides. Baseline 3 is appropriate.

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 starts with 'Find tools by describing the data or task,' clearly stating the verb and resource. It distinguishes from siblings by specifying discovery of tools vs other actions, and lists numerous domains. The purpose is specific and not a tautology.

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?

Explicitly says 'Use when you need to browse, search, look up, or discover what tools exist' and advises 'Call this FIRST when you have many tools available and want to see the option set (not just one answer).' This provides clear when-to-use and implies when not to use.

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?

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds useful behavioral context: what data is returned (SEC filings, fundamentals, patents, news, LEI) and that it uses pipeworx:// citation URIs. However, it does not mention potential rate limits or caching behavior.

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 appropriately sized given the tool's complexity. It front-loads the purpose, then lists contents, then parameter guidance. 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.

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

For a complex tool with no output schema, the description does a good job explaining what is returned (SEC filings, fundamentals, patents, news, LEI) and provides parameter constraints. It could be more complete by mentioning any pagination or limits, but it is adequate.

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 100%, so baseline is 3. The description adds meaning: explains that type only supports 'company' currently, and for value, it differentiates between ticker and CIK with examples, plus guidance to use resolve_entity for names. This enriches the schema.

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 explicitly states 'Get everything about a company in one call' and lists specific use cases like 'tell me about X', clearly distinguishing this from siblings by mentioning it replaces 10+ pack tools. The verb 'Get' and resource 'company profile' are specific.

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 provides explicit when-to-use scenarios (user asks about a company) and when-not-to (names not supported, use resolve_entity first). It also names alternatives, making it easy for the agent to decide.

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?

Annotations already set destructiveHint=true, so description adds minimal value by confirming deletion. No additional behavioral details like error handling or irreversibility.

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?

Two sentences: first states action, second provides context and sibling relations. Every sentence is essential and front-loaded.

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?

Covers purpose, usage context, and sibling links for a simple 1-param tool. Could mention return behavior (e.g., success indication) but not critical.

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 100% for the only parameter 'key'. Description does not add extra semantics beyond what schema provides ('Memory key to delete').

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?

Clearly states 'Delete a previously stored memory by key', providing specific verb and resource. Distinguishes itself from siblings 'remember' and 'recall' by pairing suggestion.

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?

Provides explicit when-to-use scenarios: context is stale, task done, clear sensitive data. However, lacks exclusion scenarios or alternatives beyond pairing with siblings.

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?

Annotations already declare readOnlyHint=true and destructiveHint=false, so the agent knows it's a safe read. The description adds minimal value beyond stating it retrieves a 'single document,' but does not disclose behavior like error handling or common failure modes.

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 very short (one phrase), which is concise but borders on under-specification. It front-loads the core idea but omits necessary details, making it less helpful than a slightly longer description would be.

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 has one parameter, no output schema, and no nested objects, the description should at least mention the return format or behavior for missing IDs. It covers only the basic purpose, leaving the agent without enough context to use it reliably.

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 input schema has 0% description coverage for the hal_id parameter. The description only mentions 'by HAL id,' implying the parameter is the identifier, but provides no format, example, or explanation of what a HAL id is. This barely compensates for the missing schema descriptions.

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 retrieves a single document using a HAL id, specifying the verb (get) and resource (document) with the identifier. It is specific enough to distinguish from most sibling tools, though it doesn't explicitly exclude overlapping tools like 'search' or 'entity_profile'.

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 gives no guidance on when to use this tool versus alternatives like 'search' for multiple documents or 'entity_profile' for non-document entities. It lacks explicit usage context, when-nots, or prerequisites.

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?

Discloses rate limiting (5 per identifier per day), that it's free, doesn't count against tool-call quota, and that team reads digests daily. Adds context beyond annotations (readOnlyHint=false, destructiveHint=false).

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?

All sentences are concise and useful, no fluff. Front-loaded with action and categories, followed by usage tips and constraints. Efficient use of space.

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, the description covers everything needed: purpose, usage rules, input details, and behavioral notes. No output schema is needed.

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?

Input schema has 100% coverage with descriptions for each field. The description adds practical guidance for each enum value and the message format, enriching the schema's meaning.

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's purpose: sending feedback (bug, feature, data_gap, praise) to the Pipeworx team. It distinguishes from sibling tools by being the dedicated feedback channel.

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?

Explicitly describes when to use (bug, feature request, data gap, praise) and provides detailed guidance: describe in terms of tools/packs, avoid pasting user prompts, mentions rate limits and quota impact.

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?

Annotations already indicate readOnlyHint=true and destructiveHint=false, so no contradiction. The description adds useful behavioral context: stored values are scoped to the agent's identifier, and it pairs with remember/forget. No further behavioral details needed for a simple retrieval operation.

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 three sentences, front-loaded with the primary action. Every sentence adds essential information without redundancy. It is concise yet informative.

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 (one optional parameter, no output schema), the description completely covers its behavior: what it retrieves, how to list all keys, scoping, and relationship to sibling tools. No gaps remain.

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 input schema already describes the 'key' parameter with 100% coverage. The description adds value by clarifying that omitting the key lists all saved keys, and provides examples of what might be stored. This goes beyond the schema's minimal description.

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's purpose: 'Retrieve a value previously saved via remember, or list all saved keys'. It specifies the verb (retrieve/list) and resource (saved values), and distinguishes from sibling tools like 'remember' (save) and 'forget' (delete).

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 provides concrete examples of when to use the tool ('the user's target ticker, an address, prior research notes') and explains it is scoped to an identifier. It also references sibling tools 'remember' and 'forget' for context, though it doesn't explicitly state when not to use it.

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?

Annotations already mark the tool as read-only and non-destructive. The description adds value by detailing that it fans out to SEC EDGAR, GDELT, and USPTO in parallel, and describes the output structure (structured changes, count, URIs). No contradictions.

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?

Three sentences: purpose with examples, behavior (fan-out), and parameter details. Each sentence is informative and essential. Front-loaded with key information.

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 has three parameters and no output schema, the description covers inputs, output format, data sources, and use cases adequately. No gaps for its complexity.

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?

With 100% schema coverage, the description still adds meaning: explains supported values for `type`, gives examples for `since` (ISO date, relative shorthand), and clarifies `value` as ticker or CIK. Also suggests typical usage ('30d').

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's purpose: finding recent changes for a company. It uses specific verbs ('what's new') and resources ('company'), and distinguishes itself from siblings by mentioning parallel fan-out to multiple data sources.

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 includes explicit example queries that signal when to use the tool, such as 'what's happening with X?' or 'any updates on Y?'. However, it does not provide exclusions or alternatives, though the context implies other tools for different queries.

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?

The description goes beyond annotations by detailing memory scoping by identifier, persistence differences between authenticated users and anonymous sessions (24 hours), and the key-value storage model. Annotations only indicate non-read-only and non-destructive, so this adds valuable context.

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, with front-loaded purpose and no redundant information. Every sentence adds value, including usage guidelines and behavioral notes.

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 store tool with no output schema, the description fully covers purpose, usage, parameter semantics, and behavioral traits. It is complete given the tool’s low complexity.

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 input schema already has 100% description coverage for both parameters with examples. The description complements this by explaining the purpose of key-value pair storage and providing additional context, but the schema itself is already quite informative.

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 that the tool saves data for reuse across conversations or sessions, with a specific verb and resource (save data). It distinguishes itself from siblings like recall and forget by mentioning they are paired 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 provides explicit guidance on when to use the tool: when discovering something worth carrying forward. It also mentions alternatives: pair with recall to retrieve later, forget to delete.

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?

The description expands on annotations by detailing the return value (IDs plus pipeworx:// citation URIs) and the scope (multiple identifiers in one call). Annotations (readOnlyHint: true, destructiveHint: false) are consistent, and no contradictions exist.

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 (three sentences), well-structured, and front-loaded with the core purpose. Every sentence adds meaningful information without redundancy.

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?

While no output schema exists, the description adequately explains the return values (IDs and citation URIs) with examples. It covers the tool's role in the workflow. Minor gap: exact structure of the return isn't specified, but the examples mitigate this.

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 coverage is 100% with descriptions for both parameters. The description adds value by providing examples for the 'value' parameter (ticker, CIK, name for company; brand or generic for drug), clarifying the accepted formats beyond the schema.

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's purpose: looking up canonical/official identifiers for companies or drugs. It specifies the ID systems (CIK, ticker, RxCUI, LEI) and gives concrete examples, distinguishing it from sibling tools like entity_profile or compare_entities.

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?

Explicit guidance is provided: 'Use when a user mentions a name and you need the CIK...', 'Use this BEFORE calling other tools that need official identifiers', and 'Replaces 2–3 lookup calls.' This tells the agent exactly when and how to invoke the tool.

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?

Annotations already declare readOnlyHint=true and destructiveHint=false, so the description's claim of 'search' is consistent. The description adds the 'Solr-style' context but does not disclose additional behavioral traits such as pagination (though schema has rows/start) or result format. With annotations covering safety, the description adds minimal extra behavioral transparency.

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, front-loaded sentence that efficiently states purpose. Every word contributes meaning. It could be slightly more descriptive but is not verbose.

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 has 6 input parameters and no output schema, the description should clarify what the search returns (e.g., list of HAL entities, fields, etc.). It does not mention the response format or result behavior, leaving a significant gap for an agent to understand the tool's full behavior.

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?

All 6 parameters are fully described in the schema (100% coverage). The description only adds the 'Solr-style' context, which aligns with the sort and query parameters, but does not add meaning beyond what the schema already provides. Baseline 3 is appropriate.

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 'Solr-style search across HAL' clearly specifies the action (search) and the resource (HAL), and implies a specific query syntax (Solr-style), which distinguishes it from sibling tools like 'get' or 'remember'.

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 its use for search queries with Solr syntax, but it does not explicitly state when to use this tool versus alternatives like 'get' for single entities or 'structure' for relationships. No exclusion criteria are provided.

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?

Annotations already indicate readOnlyHint=true and destructiveHint=false, so the description's generic 'lookup' adds no new behavioral context. The description does not contradict annotations, but also does not disclose additional traits like pagination behavior or result consistency.

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 brief (one phrase), with no wasted words. However, it lacks structured information like parameter explanations or usage hints, making it somewhat underspecified.

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 simplicity of the tool (2 parameters, no output schema), the description fails to convey what the tool returns, how results are formatted, or the purpose of pagination via 'rows'. The 'openWorldHint' annotation suggests dynamic results, but the description does not elaborate.

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 input schema describes 'rows' (range) but not 'query'. The tool description offers no help for the 'query' parameter, despite low schema coverage (50%). The agent is left without semantic meaning for the required 'query' field.

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 'Research-structure (lab/department) lookup' clearly states the tool's action (lookup) and resource (research-structures like labs/departments), differentiating it from sibling tools like 'search' or 'entity_profile' which serve broader or different purposes.

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?

No guidance is provided on when to use this tool versus alternatives (e.g., 'search', 'entity_profile', 'resolve_entity'). The description does not specify prerequisites, appropriate contexts, or exclusions.

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?

Adds significant behavioral context beyond annotations: returns verdict, structured form, citation, percent delta; describes internal process. No contradiction with readOnlyHint/openWorldHint/destructiveHint.

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?

Front-loaded with key purpose, then adds necessary details. Slightly verbose but all sentences add value.

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 single parameter, no output schema, and helpful annotations, description is complete: explains domain, usage, return values (verdict list), and integration note.

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?

Only one parameter with schema description coverage 100%, so schema already documents it well. Description adds examples but no extra meaning beyond schema.

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 it fact-checks factual claims against authoritative sources, uses specific verbs like 'validate' and 'confirm/refute', and distinguishes from siblings by noting it replaces multiple sequential calls.

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?

Provides explicit when-to-use guidance with example queries and specifies domain limitations (company-financial claims for US public companies). Could explicitly mention when not to use, but clear enough.

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