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

No annotations are provided, so the description carries the burden. It does disclose the authentication/payment mechanism (API key or per-call payment), which is a significant behavioral trait. However, it doesn't mention other important aspects like response format (although output schema exists), side effects, or failure modes beyond ambiguity. It states that ambiguity results in candidates, which is helpful but not exhaustive.

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 long paragraph with a run-on structure. The authentication requirement is placed first, which might be important, but it delays the core purpose. It could be broken into sentences for better readability. It includes necessary details but lacks front-loading of the primary action.

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 has an output schema, so the description doesn't need to explain return values in detail. It covers the essential inputs (name, optional namespace, venue), and handles the ambiguous case. The main gaps are not listing prerequisites for the optional parameters or typical use cases, but the description gives enough for correct invocation.

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 67%: the description covers 'name' and 'venue' with examples, but 'namespace' is only described via its enum. The description adds meaning by explaining that venue resolves through ccxt's mapping, and provides example names for the 'name' parameter. It partially compensates for the missing schema description of 'namespace' by listing the allowed values in the schema, so the combination is adequate.

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 the verb 'Resolve' and the resource 'one argument name against the ChainHelix Agentic Lexicon', and distinguishes it from sibling tools like lexicon_bulk and lexicon_spec by focusing on single resolution with candidates for ambiguity. It clearly communicates the function and scope.

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 clear context on when to use the tool: to resolve an argument name, and explains the returned data (entry or candidates) when the name is unknown or ambiguous. It also mentions optional parameters for namespace and venue, which helps with usage. However, it doesn't explicitly contrast with alternatives like lexicon_bulk, but the purpose is distinct enough.

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