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

No annotations are provided, so the description carries the burden. It implies a read-only 'Get' operation and lists return contents, but it does not disclose whether the data is static, real-time, or requires any authentication. The 'FREE' note adds a small behavioral/economic trait, but overall transparency is minimal.

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 description is a single, front-loaded sentence with no fluff. It immediately states the verb and resource, lists specifics, and ends with a brief 'FREE.' All content earns its place.

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?

Given the low complexity (no parameters, no output schema), the description covers the essential purpose and expected return content. However, it could briefly note that this is a read-only operation or that capabilities may vary by jurisdiction (given sibling tools like compliance_jurisdiction_risk), so it is not fully complete.

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?

The input schema is empty (0 parameters), yielding a baseline of 4. The description correctly includes no parameter details, and there is nothing misleading. As there are no parameters to explain, the description adequately satisfies this dimension.

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?

The description starts with a clear verb 'Get' and specific resource 'SENTINEL facilitator capabilities', followed by a concrete list of what is included (payment schemes, networks, assets, compliance features). This distinguishes it from siblings like facilitator_kya by focusing on capabilities rather than KYC or compliance checks.

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?

The description provides no guidance on when to use this tool versus alternatives. It does not mention any context, prerequisites, or exclusions. The 'FREE' note hints at a low cost but does not explain when to invoke this tool over sibling tools.

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