threads_publish_thread

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

With no annotations, the description carries the full burden. It does explain the sequential publishing behavior and that the return is a JSON string with post IDs and permalinks. However, it lacks information on failure behavior, rate limits, authentication, or other side effects, which is a notable gap for a write 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 concise, front-loaded with the main purpose, and structured with Args/Returns sections. Every sentence provides useful information with no redundancy or fluff.

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 has a low-complexity interface with one parameter and an output schema. The description explains the return format and the basic behavior, making it mostly complete. However, it lacks explicit guidance on when to use this tool versus similar siblings, which prevents 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?

The schema only defines 'posts' as an array of strings with no description. The description adds meaningful semantics by explaining these are text strings to be published as a thread, and gives a typical length of 7-12 posts. This compensates well for the 0% schema description coverage.

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 clearly states the tool publishes a full thread with posts chained as replies. The verb 'publish' and resource 'full thread' are specific, and the mention of chaining distinguishes it from sibling tools like threads_publish_text, which likely publishes a single post.

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 context on what the tool does (publish a list of text strings as a threaded sequence), which implies when to use it. However, it does not explicitly name alternatives or state when NOT to use this tool, such as when publishing a single post or to another platform.

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