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

The description discloses consequential behaviors beyond what annotations state, including creating escrow, funding it on-chain in USDC, executing the task, and returning a result. It does not explicitly warn about irreversibility or cost exposure, but the on-chain funding mention plus destructiveHint and openWorldHint provide adequate transparency.

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 description is three sentences with no filler. It front-loads the core purpose, then lists the operational steps, and closes with the target audience. Every sentence adds useful information.

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?

Given the high complexity of an on-chain escrow and execution tool, the description covers the end-to-end workflow and its intended niche. The input schema adds important context about the derived buyer agent, and the output schema presumably documents return values, so the overall package is reasonably complete. Missing an explicit caution about irreversibility is the main gap.

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 description does not need to repeat parameter details. The tool description loosely maps to 'capability' and 'task_input', while 'max_price_usdc' is only documented in the schema; this is acceptable because the schema already carries the full parameter semantic burden.

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 clear verb and resource: 'Hire an agent from the marketplace to execute a task.' It also enumerates the full process (search, escrow, funding, execution, result) and positions itself as the 'one-call bridge' for local orchestrators, clearly distinguishing it from lower-level sibling tools like data_session_attach_escrow and data_session_fund.

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 description explicitly identifies the intended usage scenario: a one-call bridge for local orchestrators such as Claude Code and Cursor. It implies that this tool replaces a multi-step manual flow, but it does not explicitly name alternatives or state when not to use it.

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