OpenChainGraph Suite · ART-152 · wave 27

MCP Task Lifecycle State Machine Validator

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.
MCP Task State Machine Reference
From stateLegal transitions (to)
workingworking, input_required, completed, failed, cancelled
input_requiredworking, cancelled, failed
completednone (terminal)
failednone (terminal)
cancellednone (terminal)
Presets
Transition Sequence
Result
Execution Hash & §4 Artifact
SHA-256 execution hash (JCS canonical — RFC 8785):