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

Goes well beyond the annotations (idempotent/readOnly/destructive hints), disclosing that credentials are never echoed back, that the function performs three side effects in one call, that the actionable output is the callbackUrl which must be registered or logins fail with a redirect mismatch, and the NOT_OFFERED_HERE error behavior. This is exactly the behavioral context annotations cannot carry.

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-loads the core purpose and routes the critical callbackUrl instruction prominently via capitalization. It is dense and relies on caps emphasis, and the parameter recap partly duplicates the schema, but every sentence carries actionable content and there is little true waste.

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 no output schema, the description correctly compensates by naming the returned callbackUrl as the actionable output and explaining what the user must do with it. Combined with the enterprise-provider exclusions and the follow-up guide pointer, an agent has everything needed to invoke and act on the result.

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 value: it restates the provider enum, clarifies that tenantId is the Entra ID directory id required only for azure, and warns that clientId/clientSecret come from the provider console and must never be invented. Most of this is duplicated in the schema descriptions, keeping it below a 5.

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?

Opens with a specific verb+resource+scope: 'Enable a social/enterprise SSO login provider on the Bridge app in one step,' and enumerates the concrete effects (saves credentials, enables provider, returns callback URL). It explicitly distinguishes itself from the closest sibling update_auth_methods ('can flip the enable flags but never saves credentials'). An agent can identify it 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?

States when to use it, when NOT to (SAML/OIDC/Apple return NOT_OFFERED_HERE pointing to the dashboard), the alternative for flag-flipping (update_auth_methods), and a follow-up routing hint (get_integration_guide with topic=auth). Explicit alternatives and exclusions leave nothing to inference.

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