claim_next_agent_run
Atomically claim the next queued local agent run.
This record as markdown: /tools/todos/claim-next-agent-run.md
What claim_next_agent_run does on Todos
AI agents invoke claim_next_agent_run to trigger actions in Todos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why claim_next_agent_run is rated High
This tool initiates/triggers execution of an agent run—an operation whose effects depend on what the queued run contains. It is not merely reading (no data retrieval stated), not creating benign data reversibly (it claims exclusive execution control), and not destroying data. It is Execute-category because it transitions a task from queued to running state and hands control to an external agent.
From the tool's definition Tool claims (acquires/initiates) the next queued agent run. 'Claim' indicates state transition and operational control. Description uses 'atomically claim' suggesting transactional acquisition of execution rights.
Attacks that exploit this kind of access
The rule that runs claim_next_agent_run safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Todos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For claim_next_agent_run, this is the rule to start with:
claim_next_agent_run stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Todos, apply this rule, and every claim_next_agent_run call is checked against it from then on.
Questions about claim_next_agent_run
Atomically claim the next queued local agent run. It is categorised as a Execute tool in the Todos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Todos MCP server in PolicyLayer and add a rule for claim_next_agent_run: 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 Todos. Nothing to install.
claim_next_agent_run is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the claim_next_agent_run 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 claim_next_agent_run. 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.
claim_next_agent_run is provided by the Todos MCP server (@hasna/todos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Todos, and thousands of servers like it.
Across the catalogue