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Execution Contract Draft v0.1

A task on A-to-Mind is a durable state machine, not a chat history. This is the public specification every run must satisfy.

States

queued -> planning -> awaiting_approval <-> running -> succeeded
                          |                  |
                          v                  v
                       planning        paused / retrying -> running | failed

any non-terminal state -> cancelled

Guarantees

Default-deny tool permissions with per-run allowlists
Hard server-side limits on dollars, tokens, tool calls, elapsed time, retries, concurrency
Human approval gates for every external write
Idempotency keys on all external side effects
Append-only run ledger with model/tool/cost detail
Structured completion contract checked by a separate evaluator
Error taxonomy: model_error | tool_error | authorization_error | policy_violation | budget_exhausted | timeout | operator_cancelled

Machine-readable schemas (Zod) live in @aether/contracts; this page summarizes the normative behavior.