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

The annotations already declare the safe read-only, idempotent, non-destructive behavior, so the description does not need to repeat safety. It adds useful return-value context by naming sync status, last successful sync time, next sync time, provider details, and optional per-connection account details, though it does not mention pagination or error behavior.

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 three focused sentences: it states what is returned, what is optionally included, and when to use the tool. It is front-loaded and every sentence contributes without unnecessary repetition.

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 simple read-only listing tool with two fully described parameters, rich annotations, and no output schema, the description gives enough detail about return content and optional account inclusion for an agent to call it correctly. No critical calling context appears to be missing.

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%, so both parameters are already documented. The description adds some meaning for include_accounts by mentioning balances and transaction update times, but it does not add semantic detail for user_id and largely restates the optional account inclusion already present in the schema.

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 gives a specific verb and resource: it lists data feed connections for a user, with sync status, provider details, and optional account details. It is clear what the tool does, but it does not explicitly differentiate itself from the related sibling refresh_data_feeds_connection or clarify that it is read-only status retrieval rather than a refresh action.

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 final sentence explicitly states when to use the tool: to check whether feeds are healthy, degraded, or need attention. It does not name alternatives or describe when not to use it, but the usage context is clear.

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