session_key_status

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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true and non-destructive, so the safety profile is covered. The description adds only scope ('active session key grant' + 'autonomous execution status') and the 'preparation_only' tag implying a read/planning call, but says nothing about auth requirements, staleness of the grant status, or what a negative result means.

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 actual sentence is short and front-loaded, but the bracketed metadata block (capability/tier/API path/authority path) occupies roughly half the text and conveys little to an agent selecting a tool. Trimming it would improve signal density.

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?

With no output schema, the description should explain what the two statuses return and how to interpret them; instead it bundles two distinct concerns (key grant state and autopilot execution state) into one line. Combined with undocumented required parameters and no output shape, an agent cannot predict the response.

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 0% across four parameters, three of which are required (sessionId, agentAddress, sessionToken). The description never mentions any of them — not what a session token is, whether ownerAddress is optional scope narrowing, or what happens if the agent address does not match the session owner. It cannot compensate for the coverage gap.

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 concrete verb+resource: 'Check the active session key grant and autonomous execution status.' It is distinguishable from nearby siblings like grant_session_key or revoke_session_key, though it partially overlaps with get_execution_authority and verify_delegation, which it does not acknowledge.

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?

No indication of when to call this versus get_execution_authority, verify_delegation, or session_heartbeat — all adjacent in the sibling list. The bracketed prefix ('Capability: preparation_only; tier: syndicate') reads as internal taxonomy rather than caller-facing guidance.

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