Approval Ledger
Hash-bound human approval and idempotent dispatch for automated actions.
Approval Ledger is deliberately channel-neutral. It does not know about social networks, email providers, recipients or credentials. It stores an action's canonical JSON digest, required gate results, the approval attached to that exact digest and one durable dispatch result.
Install
pip install approval-ledger
Example
from approval_ledger import SQLiteLedger
ledger = SQLiteLedger("ledger.sqlite3")
action = ledger.create_action(
{"target": "draft", "body": "Human-approved message"},
required_gates=("artifact-qa",),
)
ledger.record_gate(action.id, action.digest, "artifact-qa", passed=True)
ledger.approve(action.id, action.digest, approver="editor@example.test")
receipt = ledger.dispatch(
action.id,
lambda payload, key: "provider-delivery-id",
)
assert receipt.status == "completed"
Safety model
- A changed payload has a different SHA-256 digest and needs a new approval.
- Required gates must pass before approval.
- A dispatch reservation is durable before the callback runs.
- A transport exception produces indeterminate state; the library does not retry and risk duplicate delivery.
- The package makes no claim of legal approval, content compliance or cryptographic signer identity.
Use a real authenticated audit identity and an application-specific transport outside this package.
Development
PYTHONPATH=src python -m unittest discover -s tests -v
uv build
License
MIT. See LICENSE.
1 maintainer
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