Validates long-running task state transitions per the new MCP spec state machine. Each transition is checked against legal edges. Returns VALID or INVALID with any illegal transitions flagged. Terminal node of the agent-authorization-lifecycle chain.
New MCP SpecTask LifecycleState MachineZero PIIW3C VC §13.11
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Scope
Terminal node of the agent-authorization-lifecycle chain (art-150→151→152). Validates long-running task state transitions per the new MCP spec state machine. Each {from, to} transition is checked for legality.
Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.
Run the AINumbers MCP tool `validate_mcp_task_lifecycle`. Task: Validate long-running task state transitions per the new MCP spec state machine (working/input_required/completed/failed/cancelled).
Call it with arguments: {"policy_parameters":{"transitions":[{"from":"working","to":"working"},{"from":"working","to":"input_required"},{"from":"input_required","to":"working"},{"from":"working","to":"completed"}]}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string, or re-run the in-page WebMCP tool `validate_mcp_task_lifecycle`.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-152-mcp-task-lifecycle-validator.html#p=v1.H4sIAAAAAAAA_wGpAFb_eyJ0cmFuc2l0aW9ucyI6W3siZnJvbSI6IndvcmtpbmciLCJ0byI6IndvcmtpbmcifSx7ImZyb20iOiJ3b3JraW5nIiwidG8iOiJpbnB1dF9yZXF1aXJlZCJ9LHsiZnJvbSI6ImlucHV0X3JlcXVpcmVkIiwidG8iOiJ3b3JraW5nIn0seyJmcm9tIjoid29ya2luZyIsInRvIjoiY29tcGxldGVkIn1dfe5A6LapAAAA