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

Beyond the readOnly/non-destructive annotations, the description discloses that it reads only material in the call with no network request, fetch, money movement, message, sharing, configuration change or external write. It also states the paid access model (0.10 USDC per call on Base via x402 exact, 10 free signed-wallet calls per 30 days), the X-Wever-Wallet-Proof binding to exact JSON arguments and route, and that it returns an Ed25519 signed receipt.

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?

All the needed information is present and purpose is front-loaded, but it is delivered as one long run-on paragraph with dense clause stacking ('names budgets that cap totals and leave recipients open, revocation that is not immediate and spending records nobody can read while money is moving'). Pricing, auth, contract and human-page URLs are appended without structural separation, making it harder to scan.

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?

There is no output schema, and the description compensates by explaining the report contents (five rated controls, verdict vocabulary, signed receipt) and the problem patterns it flags. Payment, auth and endpoint details are also covered. Slight gaps remain around input enum semantics and what 'coverage_unverified' requires.

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?

With only 20% schema description coverage, the description carries most of the semantic load and does so: it spells out that a setup includes max per payment, session/daily budget with its period, permitted recipients, a revocation path with when it takes effect and who can use it, and a spending record with when a payment appears and who can read it. This maps the nested objects to meaning well. It does not explain the enum values or the 'none' options in the limits fields.

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 frames this as a governance check: it takes an agent budget setup and returns a signed report rating five controls as present, weak or missing, with named verdicts (controls_missing, controls_weak, coverage_unverified, full_coverage). It explicitly differentiates from wever_agent-budget-guard and wever_approval-policy-check. The opening verb 'submit an agent budget setup' is slightly ambiguous for a read-only assessment tool, which keeps it short of a 5.

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 names two concrete alternatives and the conditions that select them: enforcing a budget on one request is wever_agent-budget-guard, and an approval against a standing limit is wever_approval-policy-check. That is strong routing guidance. It stops short of explicit when-not-to-use or prerequisite conditions for this tool itself.

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