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Onchain & Trading Intelligence — Idempotency Key Management
x402
Onchain & Trading Intelligence — Idempotency Key Management is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Registers or validates an idempotency key with a TTL to ensure pay-per-call trading intelligence requests are not double-billed or duplicated.
Price / call$0.003
Success—
StatusUnknown
How this service works
Idempotency key: returns firstTime:true only once per key within ttl (dedupe retries/double-sends). Send { key, token, ttlSec? }.
Output
Returns a confirmation that the idempotency key has been registered along with its expiry time. If the key already exists, indicates a duplicate request so the caller can suppress the re-submission and avoid paying again.
Example use cases
Prevent duplicate USDC charges on retry
“My trading bot just timed out before getting a response — register an idempotency key 'solana-snipe-req-8842' with my token and a 7200-second TTL so I can safely retry without paying twice.”
Short-lived key for ephemeral price check
“Create an idempotency key 'price-check-eth-usdc-001' with a 300-second TTL using my secret token — I want to make sure my on-chain price query only gets billed once even if the network hiccups.”
Daily deduplication token for agent fleet
“Register idempotency key 'agent-fleet-daily-run-2024-06-15' with my token and a 86400-second TTL so none of my 10 parallel trading agents double-submit the same on-chain intelligence request today.”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/idempotencyWhen to prefer
Use this endpoint before any pay-per-call trading intelligence tool call when you need to guarantee exactly-once billing semantics — particularly when network retries, agent restarts, or parallelism could cause the same logical request to be submitted more than once. Essential for high-frequency trading agents, fleet deployments, or any workflow where a duplicate $0.003 charge per call would compound at scale.
Side effects
- Missing required 'key' or 'token' field returns a 400 validation error
- Invalid or unauthorized token returns a 401/403 response
- Key already exists returns a conflict or duplicate-detected response
- TTL value out of acceptable range may return a validation error
- Service unavailability on Railway returns a 502/503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keyrequired | string | Idempotency key |
| tokenrequired | string | Your secret token |
| ttlSec | number | TTL seconds, default 86400 |
Tags
x402
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