rynmesh_digest_add_source

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

No annotations are provided, so the description must carry the behavioral disclosure burden. 'Add' implies a mutating operation, but there is no mention of validation, duplicate handling, whether the source is fetched immediately, required permissions, or failure behavior. This is a significant gap for a tool with zero annotation support.

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?

A single, well-structured sentence states the verb, object, and concrete examples. Every word adds value, and the key 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?

For a two-parameter tool this is reasonably usable: the main parameter's accepted values are clear. But with no annotations and no output schema, the description lacks guidance on `tags`, likely effects, and error scenarios, so an agent cannot fully anticipate the outcome of the call.

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%, so the description must compensate. It does add meaningful semantics for the required `url` parameter by listing acceptable formats. However, the optional `tags` parameter is entirely undocumented, leaving one of the two parameters without any explanatory value.

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 names a specific action and resource: 'Add a content source to the owner's digest.' It goes further by enumerating exactly what kinds of sources are accepted (RSS/Atom URLs, YouTube channels/handles, subreddits), which clearly differentiates it from sibling tools like rynmesh_watcher_add.

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 phrase 'to the owner's digest' establishes a clear context for when this tool is appropriate, and the accepted source formats give practical usage guidance. However, it does not explicitly mention alternative tools or state when not to use this tool, so it stops short of a 5.

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