read_channel

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

The description explicitly discloses the auto-export side effect to the vault, which is critical for an agent to understand. However, with no annotations, the description carries full burden, and it does not mention rate limits, auth needs, or handling of missing channels.

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 short (three sentences) and front-loaded with purpose. It is concise, but some parameter details are missing, which reduces effectiveness. Nonetheless, it avoids verbosity.

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?

Given 5 parameters and no annotations, the description lacks detail on limit, time filters (latest/oldest), and workspace selection. Even with an output schema, the agent cannot fully understand how to use parameters like latest and oldest without additional context.

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%, meaning no parameter descriptions in the schema. The description only explains the 'channel' parameter (ID or name). Parameters like limit, latest, oldest, and workspace are not described, leaving their semantics ambiguous (e.g., whether latest/oldest are timestamps or message IDs).

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 'Read recent messages from a channel,' with a specific verb and resource. It differentiates from sibling tools like read_thread (thread-specific) and search_messages (search-oriented) by focusing on reading messages from a channel directly.

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 specifies input format (ID or name) and ordering ('Newest first'), but lacks guidance on when to use this tool vs. alternatives like search_messages for filtering or read_thread for threaded conversations. No exclusions or prerequisites are mentioned.

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