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

Rich disclosure beyond annotations: pricing (0.25 USDC/call on Base), a 10-call free wallet tier, x402 settlement path, and the fact that existing credentials/mandates remain required while the adapter supplies no credentials. readOnlyHint=false is consistent with the payment settlement implied by the paid URL. Minor gap: no mention of rate limits beyond the free-call cap.

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 text is bloated with repeated legal/pricing boilerplate: the free computation paths are stated twice ('/api/mcp or /api/service-resolver' and again 'the Labs MCP and resolver computation paths remain free'), and the boundary paragraph restates the same non-authority claims. Front-loading pricing over the tool's actual function wastes the opening the agent reads first.

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 should explain what the 'deterministic priorities' return looks like, but it does not. It does cover auth, pricing and boundaries adequately, so it is workable but incomplete for a tool whose whole value is its computed output.

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 as_of, services and queues are already documented in the schema. The description adds nothing about parameter format or constraints, so the baseline 3 applies.

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 names a specific verb and resource: 'Summarize supplied service health and queue observations into deterministic priorities.' An agent can tell what the tool produces. However, it never explicitly distinguishes itself from the many sibling rails (sla-rail, budget-guard, etc.), leaving differentiation to inference.

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?

It gives boundary conditions ('uses supplied data only', 'no provider work, callbacks, document retrieval or signed attestations') and pricing tiers, which imply when it applies, but it never states when to prefer this over siblings like wever_agent-sla-rail or wever_agent-budget-guard. Usage is implied rather than directed.

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