get_v4_asset_price_history

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It mentions 'Powered by Chainlink oracles' (data source) and 'No API key needed' (authentication), but does not disclose rate limits, caching behavior, data update frequency, or error handling for invalid token addresses. The behavioral profile is minimal.

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 concise: three short sentences covering purpose, source, and access. It is front-loaded with the primary action and resource. Every sentence adds value without repetition or fluff.

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 three parameters (all described in schema) and no output schema, the description could be more complete. It does not mention return format (time series, min/max, etc.), data granularity, or time range constraints. For a historical data tool, such details would help the agent understand output shape. However, the schema covers parameter descriptions, so overall completeness is average.

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 each parameter has a baseline description in the schema. The tool description adds 'Powered by Chainlink oracles' and 'No API key needed', which are not parameter-specific. It does not explain parameter semantics like window values (e.g., what 'LAST_WEEK' means) or token address format. Thus, it meets the baseline without exceeding it.

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 'Get historical price data for an Aave V4 asset', specifying the verb and resource. It distinguishes from siblings like 'get_aave_reserve' or 'get_recent_borrows' by focusing on price history. The additional notes about Chainlink oracles and no API key add context without confusion.

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 like 'get_reserve_rate_history' or 'get_v4_exchange_rate'. It does not state prerequisites, when-not to use, or recommend other tools. The only contextual hint is 'No API key needed', which is useful but insufficient for decision-making.

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