dispatch-cancel
Cancel a dispatch task you previously sent or received. Notifies the other party that the task should be abandoned.
This record as markdown: /tools/dev-forgesworn-bray/dispatch-cancel.md
What dispatch-cancel does on Nostr Bray
AI agents use dispatch-cancel to create or update resources in Nostr Bray, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nostr Bray environment.
Why dispatch-cancel is rated Medium
Cancelling a task and notifying another party is a reversible modification of task state (status change + notification). It does not irreversibly delete data, execute code, or involve financial transactions. It is a Write-level action with medium severity since it affects coordination between parties and could disrupt ongoing work if misused.
From the tool's definition Cancel a dispatch task you previously sent or received. Notifies the other party that the task should be abandoned.
Attacks that exploit this kind of access
The rule that runs dispatch-cancel safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nostr Bray, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For dispatch-cancel, this is the rule to start with:
dispatch-cancel stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every dispatch-cancel call is checked against it from then on.
Questions about dispatch-cancel
Cancel a dispatch task you previously sent or received. Notifies the other party that the task should be abandoned. It is categorised as a Write tool in the Nostr Bray MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Nostr Bray MCP server in PolicyLayer and add a rule for dispatch-cancel: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Nostr Bray. Nothing to install.
dispatch-cancel is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the dispatch-cancel rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for dispatch-cancel. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
dispatch-cancel is provided by the Nostr Bray MCP server (nostr-bray). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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