parse_fix_message

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

No annotations exist, so the description must fully disclose behavior. It states output includes tag/name/value/meaning fields, but does not address error handling (e.g., malformed messages), input length limits, or side effects. Being a parse operation, it's likely read-only, but more specifics would improve 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 sentence that concisely states the tool's action and key details. No superfluous 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 simple input (one parameter) and no output schema, the description provides sufficient detail: input format and output fields. Sibling tools fill remaining context. No gaps.

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 schema has one parameter 'message' with 0% description coverage. The description adds significant meaning by specifying the allowed delimiter formats (SOH, '|', '^'), which clarifies acceptable input beyond the property name alone.

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 tool decodes raw FIX messages into structured fields (tag/name/value/meaning), specifying delimiter options (SOH, '|', '^'). This clearly distinguishes it from siblings like build_fix_message (constructs messages), explain_fix_tag (explains individual tags), and validate_fix_message (validates messages).

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 use when a raw FIX message needs parsing, but no explicit when-to-use or when-not-to-use guidance is given. Alternatives like build_fix_message or explain_fix_tag are not mentioned, though the purpose alone differentiates them. Lacks explicit usage context.

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