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Bounty Engineer Delta Policy Gate
x402
Bounty Engineer Delta Policy Gate is a paid API for AI agents from bounty-engineer-x402-prod.onrender.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).
Validates JSON state transitions against a configurable policy, detecting blocked-path changes, type changes, field count limits, and required-path changes between two JSON snapshots.
Price / call$0.03
Success—
StatusUnknown
How this service works
Machine-buyable infrastructure for autonomous agents: API cost routing, margin optimization, funding-rate data, webpage extraction, result verification, spend controls, retry planning, state, tender search and GitHub bounty intelligence.
Output
Returns a JSON object with a boolean ok flag, mode identifier, decision string (allow/hold/deny), a list of detected changes with their paths and kinds, an array of policy findings with violation IDs and detail messages, SHA-256 checksums for both before and after snapshots, a proof block indicating notarization status, observations, and a limitations disclaimer array.
Example use cases
Guard agent-managed pricing data
“I need to make sure my pricing engine agent didn't touch the /price or /discount fields when it updated this product record — compare the before and after snapshots and hold the transaction if either of those paths changed.”
Enforce field-count limits on state updates
“My automation just produced an updated config object and I need to verify it changed no more than 10 fields versus the original — flag it with a hold decision and list every modified path if it goes over.”
Verify required state transition occurred
“After my agent processed this order, I need to confirm that /status actually changed between the old and new snapshots, and that no blocked paths like /order_total were touched — give me a decision and the full list of findings.”
Technical details
Endpoint
POSThttps://bounty-engineer-x402-prod.onrender.com/v1/delta-policy-gate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, stateless JSON diff-and-policy-gate that runs in an agent pipeline without touching external systems — ideal for enforcing change control on agent-produced state objects, gating workflow steps on allowed transitions, or auditing before-and-after snapshots with checksum proof. Prefer it over full database triggers or complex approval workflows when the policy can be expressed as blocked paths, type-change rules, field count limits, and required-change assertions on JSON pointers.
Side effects
- Invalid or non-parseable JSON in before/after fields causing schema rejection
- Mismatched expected_before_sha256 or expected_after_sha256 resulting in checksum mismatch finding
- Missing required policy sub-fields causing incomplete evaluation
- Policy max_changed_fields set to 0 blocking any change
- blocked_paths array containing malformed JSON pointers causing evaluation errors
- Payment failure (402) if USDC funds are insufficient before the call is processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| after | — | Caller supplied JSON object/array snapshot |
| before | — | Caller supplied JSON object/array snapshot |
| policy | object | |
| change_ref | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"mode": "delta_policy_gate",
"proof": {
"type": "caller_supplied_json_sha256",
"sha256": "c97b574b56014fd12106c0f70e2a5338781978edd7a8aba11b26ef363ccb6fe2",
"notarized": false,
"digitally_signed": false,
"external_source_verified": false
},
"changes": [
{
"kind": "modified",
"path": "/price"
},
{
"kind": "modified",
"path": "/status"
}
],
"decision": "hold",
"findings": [
{
"id": "blocked_path_changed",
"detail": "Blocked JSON pointer changed: /price"
}
],
"change_ref": null,
"limitations": [
"The service cannot establish who supplied the JSON, its external source, or the truth of the measurements.",
"SHA-256 is a checksum, not a notarized third-party attestation.",
"No systems are modified, actions executed, wallets billed by this algorithm or outside accounts accessed."
],
"after_sha256": "97bcf68fe8fda0941ccb119acdd65f20c536b3154d3b5ffdccd70b6e04e23891",
"observations": [],
"before_sha256": "c6a3e41eb38bec743730cdceaa6715ec3f8ea45d2be717b1dcab7b7fbba011e1",
"total_changes": 2
}
}Tags
x402
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