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

Annotations already declare readOnly, idempotent, openWorld, and non-destructive, so the safety profile is covered. The description adds genuinely non-schema information: a $0.01 USDC charge per successful call via x402 on Solana, an equivalent HTTPS endpoint, and that the response includes a BLS retrieval date and disclaimer. It stops short of error/payment-failure or rate-limit 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?

Front-loaded with what the tool returns, then return shape, then pricing and transport. The indicator enumeration is long but operational, and no sentence is filler. Slight density cost from stacking payment details and the alternate URL in the same block.

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?

With no output schema, the description responsibly covers the return shape (latest value, month, MoM/YoY, history window, retrieval date, disclaimer). Payment model and pricing are disclosed, which matters for an x402 tool. Only the distinction from overlapping macro siblings is missing.

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 the schema fully documents both optional parameters, including the 'history' range and the accepted indicator keys. The description only echoes the default of 13 months and repeats the indicator list, adding little beyond what the schema already states.

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?

States a specific verb and resource: a US macro dashboard from BLS, with the exact indicator set enumerated and a note that all series come back in one call. It does not differentiate itself from the very similar sibling tools macro_indicators and bls_series, which an agent would need in order to choose correctly.

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?

Usage is implied by the scope statement ('US macro dashboard from BLS in one call'), which hints at a bundled alternative to per-series retrieval, but there is no explicit when-to-use or when-not-to-use guidance. The presence of siblings bls_series and macro_indicators that overlap in topic makes this a real gap.

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