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

Annotations provide readOnlyHint, idempotentHint, and destructiveHint, which are consistent with the description. The description adds valuable behavioral details such as the structure of returned events (source, citation_uri, raw payload), the effect of mark_read, and that polling works fine. No contradictions found.

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 four sentences, which is reasonable but could be slightly tighter. The main action is front-loaded with clear verb and noun, and each sentence adds useful information. Minor verbosity in explaining mark_read and the alternative endpoint.

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 no output schema, the description sufficiently explains return structure (source, citation_uri, raw payload) and key behaviors. It covers all 5 parameters indirectly through examples and usage notes. Lacks explicit mention of pagination or error handling, but the tool's nature as a read-only fetch is well-covered.

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 coverage is 100% with each parameter already described. The description reinforces some parameters (e.g., type example 'sec_8k') but does not add significant new meaning beyond the schema. Baseline 3 is appropriate as the description adds minimal extra 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 clearly states it pulls fired events from the subscription feed, specifying the resource and action. It provides specific fields returned (source, citation_uri, raw payload) and distinguishes from sibling tools like list_subscriptions by focusing on event retrieval rather than subscription 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 offers practical usage guidance, including how to filter by type and since timestamp, and how mark_read works to control subsequent calls. It also mentions an alternative HTTP endpoint for scripts. However, it does not explicitly contrast with other retrieval tools like search_within or recall, leaving some ambiguity about when to prefer this tool.

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