sentinel_call_tool

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

With no annotations provided, the description carries the burden. It discloses the security pipeline behaviors (fingerprint verification, RBAC enforcement, ledger logging) well. However, it doesn't disclose failure behaviors (what happens when verification fails, RBAC denial, or whether the call is blocked or audited on failure) or the return format.

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?

A single dense sentence that front-loads the purpose and lists the pipeline stages efficiently. No wasted words. Could arguably benefit from a second sentence on failure behavior, but as written it's tight and informative.

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 gateway routing tool with no output schema and no annotations, the description provides a good pipeline overview but lacks failure-path information (denials, verification failures, error returns). An agent needs to know what to expect when RBAC fails or the ledger write errors. Adequate but with a meaningful gap being a security-critical gateway tool.

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 schema already documents all four parameters. The description confirms that args are forwarded downstream but adds little beyond the schema. Baseline 3 is appropriate since the schema does the heavy lifting and the description adds marginal context about how args flow through the gateway.

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 uses a clear verb+resource ('Route a tool call through Sentinel Gateway's security pipeline') and lists the specific pipeline stages (integrity check, RBAC, provenance ledger, forward). It's distinguishable from siblings like sentinel_list_tools and sentinel_check_agent_access, though it doesn't explicitly name alternatives.

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 clearly implies this is the gateway entry point for executing tools (vs. management tools like register/list/policy). However, it doesn't explicitly state when NOT to use it or what prerequisites exist (e.g., agent must be registered, policy rules must exist). The stage listing implies but doesn't spell out requirements.

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