post_message

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

With no annotations, the description carries the full burden of behavioral disclosure. It adds useful context about message signing and environment-variable authentication, which goes beyond a bare action statement. However, it does not disclose side effects, persistence, response behavior, or failure modes, so the disclosure is incomplete for a mutation operation.

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 compact and front-loaded with the core purpose, followed immediately by prerequisites and parameter details. Every section earns its place without redundancy or filler.

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 simple two-parameter tool, the description is largely complete: it gives prerequisites, parameter semantics, and a clear action. An output schema exists, and there is no nested-object complexity, so the missing return-value details are not a serious gap. Minor missing language about when to prefer this tool over siblings keeps it from a perfect score.

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%, but the description fully compensates by explaining both parameters: room is given with concrete examples and text is given with a maximum length constraint. This adds substantial meaning beyond the bare schema type/title fields.

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 specific verb ('Post') and a specific resource ('signed message to a Technocore room'), making the tool's function immediately clear. It also distinguishes itself from the sibling tools read_room and verify_proof because 'post' is a write action while those names indicate read/verify operations.

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 clear prerequisites by stating that TECHNOCORE_IDENTITY and TECHNOCORE_PASSPHRASE env vars are required, which is useful operational guidance. However, it does not explicitly explain when to choose this tool over read_room or verify_proof, leaving the decision largely implied by the tool name.

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