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

Annotations already declare readOnly=false, destructive=false, idempotent=false, but the description goes well beyond them: it issues a token, names the artifact (file or meta tag) to publish, states that the token alone grants no permissions until published on the domain, and clarifies that the AI may deploy the file directly when it has builder/code access. That is real workflow and authorization context the 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?

The purpose is front-loaded and the flow (issue token → publish → verify) follows in logical order. It is slightly long, but each sentence contributes distinct information rather than restating the name or schema.

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?

No output schema exists, yet the description explains the full lifecycle a caller must drive, including the next tool to call and the condition that makes the claim valid. It is essentially complete for a 3-parameter, no-output tool, with only minor gaps around repeated-call behavior.

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 all three parameters (slug, email, website_url) are already documented with their purpose, including the email's role as the maker-console login. The description adds no syntax or format detail beyond what the schema states, 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 (claim/verify ownership) and resource (an already-listed service on the saaskr directory), with scope limited to existing listings. It names the sibling that completes the flow (verify_korean_saas_claim) and implies submit_korean_saas is for the not-yet-listed case, so an agent can place it without opening a 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?

Gives explicit trigger phrases from the user ('my service is already on saaskr, verify it as mine'), which is strong when-to-use guidance, and routes to verify_korean_saas_claim as the follow-up step. It stops short of stating an explicit exclusion, e.g. 'use submit_korean_saas instead if the service is not listed', leaving that inference to the reader.

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