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Batch Idempotency Keys
x402
Batch Idempotency Keys is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).
Derives stable, deterministic, non-secret idempotency keys for a batch of items from caller-supplied values and a namespace, without any external provider.
Price / call$0.001
Success—
StatusUnknown
How this service works
Batch Idempotency Keys: Batch Idempotency Keys derives stable non-secret idempotency keys for batch items from bounded caller-supplied values without an external provider. Call Batch Idempotency Keys before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for Batch Idempotency Keys as versioned deterministic JSON. Price: $0.001 USD…
Output
Returns a versioned deterministic JSON object containing idempotency keys for each input item, normalized values, item counts, and a versioned result contract — all computed in-memory without data retention.
Example use cases
Safe batch payment submission
“Before I send these 30 trade orders to the execution API, generate idempotency keys for each one under the namespace 'trade-batch-007' so I can retry safely if the network drops.”
Deduplicating agent task queue
“I have a list of 100 agent task records I need to enqueue — can you derive stable idempotency keys for all of them under namespace 'agent-tasks-v2' so the queue won't double-process any item on retry?”
Versioned ETL pipeline deduplication
“Run these 200 incoming webhook events through batch idempotency key generation with namespace 'webhook-ingest-prod' so our ETL pipeline can detect and drop duplicates before inserting into the database.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/batch-idempotency-keys?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to derive stable, reproducible idempotency keys for a batch of structured items before handing them to a downstream tool with a strict contract (e.g. payment processor, task queue, ETL pipeline). It is ideal when you want deterministic, namespace-scoped keys computed without any external key-management service, secret storage, or stateful provider, and when you need a versioned result contract for auditability.
Side effects
- Batch exceeds 256 items — request rejected
- Individual item exceeds 128 properties — item rejected or truncated
- Namespace string exceeds 8192 characters — validation error
- Malformed input array — schema validation failure
- Network or payment processing error — HTTP 402 or 5xx returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | Items supplied to Batch Idempotency Keys; used only for this bounded calculation and processed in memory without retention. |
| namespace | string | Namespace supplied to Batch Idempotency Keys; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"keys": [
{
"key": "a7b59420f6ae73743bb81f97fe5222c4b3db261381bd9d0d85c9bd08996d04b7",
"index": 0
},
{
"key": "884e051ec6969bb1bc6dfd28dc6b13d09cab07dc71f656acd2a398e9c5473587",
"index": 1
}
],
"cryptographic_secret": false
},
"schema": "delx/util-batch-idempotency-keys/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "375be9a5b0dc421b8588d162f162af2105b72820be462c39a74f3ceab5fd0343",
"external_calls": 0
},
"operation": "data_batch:batch_idempotency_keys"
}
}Tags
x402
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