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Delx Commerce Fibonacci Calculator
x402
Delx Commerce Fibonacci Calculator 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).
Computes the nth Fibonacci number for a given integer input, paid per-result via USDC microtransaction on Base or Solana.
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 containing the input index n, the corresponding Fibonacci value, and a schema identifier string (e.g. 'delx/fibonacci/v1') confirming the result format and provenance.
Example use cases
Fibonacci value for algorithm testing
“What is the Fibonacci number at index 50? I need the exact value to verify my algorithm output.”
Educational math sequence demo
“Can you look up the Fibonacci number for position 10 so I can show a student what the sequence looks like at that point?”
Spot-check large Fibonacci index
“I need the Fibonacci value for n equals 75 — give me the exact number.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/fibonacci?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a verifiable, pay-per-result Fibonacci computation without requiring API keys or signup, especially when operating in a crypto-native or x402-compatible payment environment on Base or Solana. Prefer it over rolling a custom implementation when auditability and verifiable delivery of the result matter.
Side effects
- Integer n out of allowed range — API returns error indicating valid range bounds
- Missing or malformed n field — returns validation error
- Payment failure or insufficient USDC balance — x402 payment not completed, request rejected
- Network or service unavailability — standard HTTP 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | integer | Integer input (see tool summary for allowed range). |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 42,
"value": 267914296,
"schema": "delx/fibonacci/v1"
}
}Tags
x402
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