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

With no annotations, the description carries the full behavioral burden and does well: it enumerates the returned data (goal, pledged, backers, state, dates, creator, category, location, story, risks, reward/update/comment/FAQ counters) and discloses the cost model ('Flat 5 points per successful run'), a genuinely useful trait. It does not cover auth, rate limits, or failure behavior.

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?

Two sentences, front-loaded with the action and identifier format followed by the return contents and cost. The long field list is dense but earns its place given there is no output schema to describe returns.

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, no-annotation, no-output-schema tool, the description supplies the identifier format, the full set of returned fields, and the cost, which is enough to invoke it correctly. Minor gaps are auth requirements and error/failure 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 the single 'project' parameter is already fully documented with an example. The description's 'by creator/project or URL' aligns with but adds little beyond the schema, so the baseline of 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: 'Get one Kickstarter project by creator/project or URL.' The singular 'one' implicitly distinguishes it from the run_kickstarter_projects_search sibling, though it never names that sibling, so sibling differentiation is only implied rather than explicit.

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?

Usage is implied: it accepts an identifier (slug or URL), so an agent infers it should be used when the specific project is already known. There is no explicit when-to-use guidance and no reference to run_kickstarter_projects_search as the alternative for finding projects.

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