verify_extension_mcp_sync

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

With no annotations, the description carries the full burden. It does signal that this is a passive verification returning the most recent receipt, which usefully tells the agent it is a read, but it omits what happens when nothing has been received (empty result? error?), and whether calling it triggers or waits on the extension.

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 sentence, front-loaded with a bracketed category label, followed immediately by the verification target and the returned fields. Nothing is redundant or padded.

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?

There is no output schema, so the description must describe the return payload, and it does: latest MCP tool name, timestamp, and ACK status. For a zero-parameter read tool this is nearly complete; only the no-data / failure case and the ACK vocabulary are left unexplained.

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 tool takes zero parameters, so there is no parameter meaning to convey; the baseline for a 0-param tool is 4.

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?

States a specific verb (verify) and a specific resource (whether the Chrome extension actually received MCP communication data), and even previews what is returned (latest tool name, timestamp, ACK status). It is distinguishable from setup-oriented siblings like check_extension_and_setup_status, but the description never names or contrasts them explicitly.

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 framing implies the use case — after an MCP tool call, confirm the extension actually received it — but the description never states when to call this versus check_extension_and_setup_status or ensure_chrome_eeclass_session, nor any preconditions. Usage must be inferred from the wording.

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