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

No annotations are provided, so the description carries the full burden and does so: it discloses the outbound email, that the pricing terms are embedded in it, that nothing is charged and no card is required, the returned fields, and that setup_claim must be retained for later calls. Those are non-obvious side effects and state-handoff requirements that no structured field conveys.

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?

Front-loaded with the action and side effect, then cost reassurance, then return values and the setup_claim handoff, then preconditions. Four dense sentences with no filler or repetition.

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?

With 8 parameters, no annotations and no output schema, the description compensates by enumerating return values and the retention requirement for setup_claim. An agent has everything needed to call it correctly and to chain follow-up tools.

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 coverage is 88%, so the schema already documents nearly every parameter including owner_email and the terms_relayed const. The description adds little parameter-level detail beyond restating the owner_email rule and reinforcing that terms_relayed requires confirmation, so the baseline 3 applies.

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 verb and resource ('Creates a GroundQuote account for a fence contractor') plus the immediate side effect (emails a set-password link containing pricing terms). It also names the exact downstream tools that consume setup_claim, so an agent can distinguish it from the read/set siblings without opening any schema.

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?

Explicit preconditions are given: confirm the contractor has heard the pricing terms before calling, and use the contractor's own email as owner_email. It also documents the post-call sequence by naming set_fence_pricing, set_branding, set_hosted_page, get_embed_code, check_account_status and resend_setup_email as consumers of setup_claim, which is exactly the when/how guidance an agent needs.

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