simplepractice_verify_sign_in_token

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

Annotations already declare destructiveHint=true and idempotentHint=false; the description independently explains why by disclosing that tokens are single-use and expire in 24 hours, and that the server remembers the practice afterward. This adds real behavioral context (one-shot consumption, expiry, state persistence) beyond the structured hints, though it doesn't cover what a returned session contains.

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?

Three compact sentences with the purpose front-loaded and no filler; each sentence carries information (purpose, accepted forms, rationale, token lifetime). It stops just short of the tightest possible phrasing but is well-sized.

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 single-parameter token-redeem tool with annotations covering the safety profile, the description covers the flow, accepted input, and token lifetime. It omits what the resulting session provides or how to use it afterward, but the session_status sibling and the lack of an output schema make that a minor 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 coverage is 100%, so the baseline is 3, but the description adds meaning beyond the schema's terse parameter note: it explains the consequence of passing the whole link (the address names the practice, so no configuration is needed). That rationale is genuinely useful selection guidance the schema does not carry.

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: 'Exchange an emailed sign-in link (or the token in it) for a Client Portal session.' An agent can immediately tell what this does. It does not, however, explicitly differentiate itself from the sibling simplepractice_verify_sign_in_pin, so it falls short of a 5.

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 gives clear in-parameter guidance ('Accepts the whole link or just the part after the #') and a recommendation ('Prefer passing the WHOLE link'), which implies usage. But it never states when to choose this tool over the sibling verify_sign_in_pin or request_sign_in_link, so alternative selection is left to inference.

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