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fly.ai Cost Lookup by Reference
x402
fly.ai Cost Lookup by Reference is a paid API for AI agents from flyai-x402.fly.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Returns the USD cost associated with a given reference identifier via a pay-per-request x402 API
Price / call$0.02
Success—
StatusUnknown
How this service works
Single answers, each paid on its own over x402. Guide: https://www.flyaiworld.com/x402-api.md
Output
Returns cost information in USD for the specified reference identifier, allowing the caller to know the price of a specific request or job on the fly.ai pay-per-request platform.
Example use cases
Verify cost before paying
“Before I authorize this payment, can you check what the cost is for reference 'req-9982' on fly.ai so I know the USD amount I'm approving?”
Audit past request charges
“Pull up the cost for reference ID 'txn-44210' from the fly.ai API — I'm reviewing our billing and need to confirm what we were charged.”
Automated pricing check in workflow
“As part of my agent workflow, check the cost of reference 'job-7731' on fly.ai and tell me the USD price so I can decide whether to proceed.”
Technical details
Endpoint
GEThttps://flyai-x402.fly.dev/cost/%7Bref%7D?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to look up the USD cost associated with a specific reference ID on the fly.ai pay-per-request platform, particularly when auditing charges, verifying pricing before payment, or integrating cost checks into an automated workflow that uses x402 micro-payments.
Side effects
- Invalid or unknown reference ID returns an error or empty response
- Missing ref path parameter results in a 400 or 404 error
- Payment not made via x402 before calling results in a 402 Payment Required response
- Malformed USD input in query may cause a validation error
- Service unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| usd | number |
Output
Schema · Response
{}Tags
x402
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