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

No annotations are provided, so the description carries the full burden. It does disclose useful behavior: it is multichain (Base and Polygon only), returns specific fields, defaults limit to 25, and costs $0.010 USDC. It omits pagination semantics, auth requirements, and whether results are ordered by time.

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?

Compact and front-loaded: identity and scope first, return fields second, query/cost last. No filler sentences, though the phantom 'limit' mention wastes a clause.

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, no annotations, and 0% schema coverage, the description does cover the chain scope and returned fields reasonably well. It still leaves gaps on pagination, ordering, and auth, and the non-existent 'limit' parameter undermines completeness for a paid, single-param tool.

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 0% and the single 'address' param has no schema description; the description does clarify it is an EVM address, which adds some meaning. However it references a 'limit' query parameter that does not exist in the schema (additionalProperties=false), a misleading detail that could cause a rejected call.

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+resource ('transaction history') with explicit scope: EVM addresses on Base and Polygon, and enumerates the returned fields. It does not explicitly differentiate itself from close siblings like 'tx' or 'tx_receipt', but the field list makes its identity clear.

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?

Gives no guidance on when to prefer this over siblings such as 'tx', 'tx_receipt', or 'solana_tx'. 'Recent transactions' implies a recency scope but there are no exclusions, prerequisites, or alternative-routing hints.

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