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

With no annotations provided, the description carries the full burden of behavioral disclosure and does it well. It states that the action does not charge FreedomOS, does not move money until the payer pays, returns a checkout URL, and includes write-tier approval semantics. This gives an agent a clear picture of side effects and prerequisites.

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 front-loaded with the core action and purpose, then gives usage conditions, return value, side effects, and approval notes in a compact, well-organized format. Every sentence adds practical value, and the approval bracket is useful rather than filler.

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 tool with 5 parameters but no output schema, the description covers the key runtime facts: what it returns, prerequisites, side effects, and approval behavior. Combined with fully documented parameters in the schema, an agent has enough information to invoke this tool correctly without additional inference.

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%, and each parameter already has a meaningful description in the schema. The tool description adds overall context and the amount-building context, but it does not add significant per-parameter meaning beyond what is already structured. Baseline 3 is appropriate here.

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 uses a specific verb and resource: 'Create a Stripe Payment Link', and explains the purpose with concrete use cases (sponsor, invoice, one-off). It also states the return value ('checkout URL') and includes a routing line that directs the agent to this tool for payment-link-related actions, distinguishing it from other payment-related siblings.

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 gives explicit usage conditions: use when get_receive_status says charges_enabled or start_company_receive has finished, and it explicitly states 'Requires charges_enabled.' This is strong guidance. However, it does not explicitly mention when not to use this tool or name an alternative tool for other payment workflows, so it falls just short of a 5.

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