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

The annotations already signal mutation and destructive potential (readOnlyHint=false, destructiveHint=true), and the description adds the key specifics: it creates escrow, moves USDC on-chain, and executes an agent task. This conveys irreversible financial side effects, which is valuable. It does not cover failure, refund, or authorization edge cases, but it materially enriches the annotation-only picture.

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 sentences, with the core action pipeline first and the target-audience context second. Every clause carries information, and nothing repeats schema content or annotations.

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 complex on-chain hire flow, the description supplies the essential invocation contract: what it searches, what it creates and funds, which currency, and that it returns a result. An output schema exists to cover return details, and the input schema covers parameters. It omits failure/refund behavior and explicit routing to sibling tools, but these are secondary given the one-call framing.

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 baseline of 3 applies. The tool description adds little parameter detail beyond saying it searches by capability and executes the task, while the schema already documents capability, task_input, and max_price_usdc, including the note that the buyer agent comes from the authenticated principal rather than arguments.

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 opens with a specific action ('Hire an agent from the marketplace to execute a task') and then enumerates the full pipeline: search by capability, create escrow, fund on-chain in USDC, execute, and return the result. It distinguishes itself from sibling tools by calling itself the 'one-call bridge,' making it clear this is the combined marketplace hire flow rather than the staged data-session tools.

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 clearly identifies its intended context: local orchestrators like Claude Code and Cursor wanting a single call into the marketplace. It implicitly differentiates from staged siblings such as data_session_fund and data_session_attach_escrow, but it does not explicitly name those alternatives or state when to prefer a staged flow instead.

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