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

Annotations already declare readOnlyHint=false and destructiveHint=false, and the description is consistent with those signals. It adds useful behavioral context by specifying the challenge-window prerequisite and that the call returns a transaction hash, though it does not cover gas, permissions, or finality beyond that.

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 sentences, front-loaded with the action and prerequisite, and no wasted words. The return value is included compactly without diluting the core instruction.

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?

For a two-parameter mutation tool with no output schema and fully specified inputs, the description supplies the essential context: what it does, when it can be called, and what it returns. Nothing critical is missing for an agent to invoke it correctly.

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 both required parameters are fully documented in the input schema. The description adds no parameter-level syntax, formatting, or constraint details beyond what the schema already provides, making the baseline 3 appropriate.

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 states a specific verb and resource: release a milestone payment on-chain, with the key precondition that the challenge window has expired. It clearly distinguishes this action from sibling escrow tools such as get_escrow, fund_escrow, and dispute_verification.

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 provides clear usage context: the tool should be called after the challenge window has expired. However, it does not explicitly name alternatives for when the window has not expired or when the caller lacks permission, so it stops short of full when/when-not routing guidance.

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