validate_webhook_delivery

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

With no annotations, the description must carry behavioral disclosure. It names the cryptographic checks and adds a micropayment/cost hint (0.01 USDC on Base L2), but it does not state whether payment is required, how the paymentSignature is used, or what side effects occur.

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?

Two tight clauses with no filler; the core validation behavior is front-loaded and the cost note is short. Every element earns its place.

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?

Adequate for a basic two-parameter validator, but there are gaps: no output/return behavior is described, and the relationship between the optional paymentSignature and the validation result is left implicit. It is sufficient to attempt a call but not fully complete.

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 structured definitions already document both parameters. The description adds no new parameter semantics beyond restating the payment context present in the schema.

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 operation ('Validates HMAC-SHA256 signatures, timestamps, and replay tolerance') and scopes it to named providers (Stripe, GitHub, Shopify, Alchemy). This clearly separates it from validator siblings like validate_jwt_token or verify_evm_signature.

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 provider list and webhook-event focus imply the use case, but the description never explicitly says when to prefer this tool over alternatives or when not to use it. No sibling is named, so the agent must infer applicability.

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