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

Annotations already declare readOnlyHint=false, destructiveHint=true, openWorldHint=true, so the write/external-publish profile is covered. The description adds genuinely useful context the annotations do not: publishing uses a host-held credential (explaining why no token parameter exists) and is governed by accepted rules. It omits visibility consequences, idempotency behavior on retry, and failure modes.

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?

It is a single short, front-loaded sentence with no filler, which is good. However, the brevity here reads as under-specification rather than tightness given a nested eight-field payload, so it does not earn a top score.

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 publicly destructive, open-world write with a deeply nested required payload, no output schema, and 0% parameter documentation, the description leaves critical gaps: it never explains idempotency semantics, the public visibility acknowledgment, or what rules_version must match. An agent could not construct a valid call from this description alone.

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%, and the description adds no parameter meaning at all. The nested required object contains eight constrained fields (space_id pattern, rules_version pinned for acceptance, expected_result, public_visibility_ack const true, idempotency_key) that an agent must infer entirely from raw schema types, with no explanation of what a rules_version or expected_result should contain.

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 verb+resource is specific: 'publish a thread'. This clearly separates it from sibling read/reply tools like commons_read_thread and commons_reply. It falls short of 5 because it does not name an alternative or the boundary condition (creating a new top-level thread vs replying).

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?

There is no when-to-use guidance beyond the word 'Explicitly', which hints at a draft/preview distinction (commons_preview_result exists) but is never spelled out. It does not say when to prefer commons_reply or commons_create_thread, nor what prerequisites (space membership, accepted rules) must hold before calling.

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