delimit_social_history

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

With no annotations, the description must disclose behavior fully. It indicates a read operation and mentions thread context for Reddit, but does not specify authentication needs, rate limits, the definition of 'recent', or the Pro requirement signaled by '(Pro)'. This leaves gaps.

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 extremely concise—two sentences that front-load the purpose and then add relevant detail. Every sentence earns its place with no unnecessary words.

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 the presence of an output schema, the description adequately covers purpose, filters, and a special feature (thread context). However, it omits mention of pagination (limit parameter) and any error or authentication context, which are minor gaps.

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 input schema covers all parameters with 100% description coverage. The description adds value by explaining that user and subreddit are for Reddit filtering, and that Reddit comments include thread context, which is not evident from the schema alone.

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 views recent social media post history, with specific filtering options (platform, Reddit user, subreddit). The verb 'View' and resource 'social history' are precise, and it distinguishes from sibling social tools focused on posting or account management.

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 implies usage for recalling prior conversations and drafting follow-ups or DM replies, but it does not explicitly state when not to use this tool or mention alternatives like delimit_memory_recent. Given many siblings, more explicit guidance would help.

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