hermes_cancelCancel any queued or running asynchronous Hermes job by providing its job ID. Stops scheduled or in-progress work with an idempotent operation, so repeated calls are harmless.
Idempotently cancel a queued or running asynchronous Hermes job.
| Name | Required | Description | Default |
|---|---|---|---|
| jobId | Yes |
Changes observed during successful MCP inspections.
v0.6.2Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description bears full burden. It mentions idempotency and the job states (queued/running) but omits side effects, permission requirements, or what happens if job is already completed.
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 extremely concise (8 words) but this under-specification harms clarity. One sentence is acceptable, but critical details are missing.
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 and no annotations, the description should provide more context about cancellation behavior, idempotency implications, and edge cases. It is insufficient for proper tool selection and invocation.
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 input schema has one parameter (jobId) with 0% schema description coverage. The description does not mention the parameter at all, leaving the agent to infer its meaning solely from 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 clearly states the action 'cancel' and the resource 'a queued or running asynchronous Hermes job', with the qualifier 'idempotently'. It effectively distinguishes from sibling tools like hermes_status or hermes_result.
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 explicit guidance on when to use this tool versus alternatives (e.g., hermes_reject). The description implies cancellation of queued/running jobs but does not specify prerequisites or when not to use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.