pio_debug_stop

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

No annotations are provided, so the description carries the full burden of disclosing behavioral traits – and it does so concretely: the target resumes execution and the probe is freed. This tells the agent the operation is state-mutating and has consequences beyond just closing a client. It does not cover error behavior (e.g., no active session) or idempotency, but the main side effects are honestly and specifically disclosed.

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 20-word sentence that front-loads the core action and lists consequences in logical order. Every clause carries information – quit, resume, free, and the upload payoff – with zero redundancy or filler.

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?

The tool is simple, an output schema exists so return values need not be explained, and the description covers purpose and side effects. However, the one required parameter, session_id, is completely undocumented and the description gives no hint that it comes from pio_debug_start or pio_debug_list. An agent can infer the source from sibling names, but inference is not documentation, so a clear gap remains.

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% and the description never mentions session_id, the single required parameter. The schema only provides 'type: string' and the tautological title 'Session Id,' so the agent gets no guidance on what value to pass or where to obtain it (presumably from pio_debug_start or pio_debug_list). The description fails to compensate for the low schema coverage.

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 opens with a clear action chain – 'Quit gdb and the debug server, resume the target, and free the probe' – naming the specific resources acted upon. This plainly identifies the tool as a debug-session teardown and distinguishes it from siblings like pio_debug_start (opens a session), pio_debug_cmd (sends commands in-session), and pio_monitor_stop (stops the serial monitor, not the debugger). There is no ambiguity about what this tool does.

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 closing phrase 'so pio_upload works again' implies the prime scenario: call this after debugging and before uploading, to release the occupied probe. However, the description never explicitly frames when to use it, states exclusions, or names alternatives such as pio_debug_list for inspecting sessions or pio_debug_cmd for mid-session control. The usage context is implied rather than stated.

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