execute_capability

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

The description discloses important behavioral traits beyond the annotations: it returns a pending plan instead of executing when approval is required, it refuses client_managed routes, and it notes that approval and final execution are separate credentialed HTTP operations not exposed as tools. These details materially shape agent expectations.

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 packs the core action, return type, routing constraint, approval behavior, and alternative tool recommendation into three focused sentences. No sentence is wasted, and the primary action is front-loaded.

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?

The tool is complex, has no output schema, and accepts nested objects, but the description covers the critical operational paths: execution, client_managed exclusion, approval-required behavior, and routing prerequisites. It stops short of describing the execution receipt's structure or possible failure modes, which is a minor gap given the open-world output.

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 input schema already documents capability_id, input, binding_id, and request_id. The description adds only modest value by noting capability_id originates from route_capabilities or list_capabilities, which is helpful but not a substantial enhancement over the schema.

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 states a specific action (execute) on a specific resource (an algenta_managed capability by capability id) and explicitly defines the return value (execution receipt). It also distinguishes itself from routing tools by clarifying that it executes known or routed capabilities, not routing itself.

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?

It gives explicit when-to-use guidance: only for routed or known algenta_managed capabilities. It further states exclusions (client_managed routes will not run here), the approval-required alternative behavior, and prioritizes route_capabilities when the right capability is unknown.

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