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Delx Commerce — Agent Delivery Fallback Gate
x402
Delx Commerce — Agent Delivery Fallback Gate is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Evaluates whether a delivery failure code is permitted and whether a fallback delivery path is allowed for an agent workflow.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object indicating whether the failure code is allowed (failure_allowed boolean), whether fallback delivery is permitted (fallback_permitted boolean), an overall pass/fail status, and a verifiable evidence block including a SHA-256 hash of the input, a flag confirming no data was retained, and a count of external calls made (always 0).
Example use cases
Agent pipeline fallback gating
“My agent delivery just failed with failure code 'CONN_REFUSED' and primary status 'error'. Fallback is available and the allowed codes are ['CONN_REFUSED', 'TIMEOUT']. Check if this failure is allowed and whether fallback delivery should proceed.”
Delivery contract compliance check
“Before my agent retries a delivery, validate that failure code 'RATE_LIMIT_429' with primary status 'degraded' is within our allowed failure codes list ['RATE_LIMIT_429'] and that fallback is permitted given fallback is available.”
Blocking unauthorized failure escalation
“My agent got a failure code 'AUTH_FAIL' with status 'rejected' and fallback is not available. Allowed failure codes are ['TIMEOUT', 'CONN_REFUSED']. Check whether this failure is allowed and whether fallback can proceed.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/agent-delivery-fallback-gate?utm_source=zero.xyzWhen to prefer
Use this endpoint when your agent workflow needs a verifiable, pay-per-use gate to decide whether a delivery failure is within policy and whether a fallback path is safe to take. It is ideal for agentic pipelines that need cryptographic proof of the decision (via input hash and zero-retention evidence) without standing up their own gating infrastructure. Prefer it over custom logic when you need an auditable, tamper-evident record of the fallback decision.
Side effects
- Missing or malformed failure_code or primary_status fields may produce unexpected gate results
- If allowed_failure_codes list is empty, most failure codes will likely be rejected
- Payment failure via x402 protocol will prevent the call from completing
- Exceeding maxItems (256) on allowed_failure_codes will cause a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| failure_code | string | Failure Code supplied to Agent Delivery Fallback Gate; used only for this bounded calculation and processed in memory without retention. |
| primary_status | string | Primary Status supplied to Agent Delivery Fallback Gate; used only for this bounded calculation and processed in memory without retention. |
| fallback_available | boolean | Fallback Available supplied to Agent Delivery Fallback Gate; used only for this bounded calculation and processed in memory without retention. |
| allowed_failure_codes | array | Allowed Failure Codes supplied to Agent Delivery Fallback Gate; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"failure_allowed": true,
"fallback_permitted": true
},
"schema": "delx/util-agent-delivery-fallback-gate/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "90bc182d30b20aad9cdbf98c44d1452bf8205f8ad59c3d598c333e1fd05badaf",
"external_calls": 0
},
"operation": "delivery_contract:agent_delivery_fallback_gate"
}
}Tags
x402
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