jdwp-mcp

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

No annotations provided, so description carries full burden. It identifies JDWP protocol but omits critical behavioral details: whether connection blocks during timeout, persistence of the session, if the target JVM pauses on attach, or failure modes. 'JDWP' implies network debugging but disclosure is minimal.

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?

Extremely brief (4 words) with no redundant text. Front-loaded with the specific protocol. However, extreme brevity contributes to under-documentation given the complexity.

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?

With 4 parameters, zero schema descriptions, no annotations, and no output schema, the description is insufficient. It fails to mention connection lifecycle, return values (session handle?), or that this must precede other debug operations.

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 0% (no parameter descriptions). Description mentions 'JDWP' which provides implicit context for host/port, but does not explain allow_remote (security implications) or timeout_ms (blocking duration), failing to compensate for the schema gap.

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?

Clear verb (Connect) and specific resource (JVM) with protocol (JDWP) specified. However, it does not explicitly clarify this as the prerequisite entry point distinct from siblings like debug.disconnect or debug.set_breakpoint, though the name implies this.

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?

No guidance provided on when to use versus alternatives, prerequisite conditions (e.g., JVM must be started with JDWP flags), or ordering relative to other debug operations in the sibling list.

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