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CURB Agent-to-Agent Inference Swap Clearinghouse
x402
CURB Agent-to-Agent Inference Swap Clearinghouse is a paid API for AI agents from api.curb.numetal.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Clears peer-to-peer inference swap transactions between agents, accepting USDC payment via x402 on Base and Solana without requiring upstream API keys on the hub.
Price / call$0.1
Success—
StatusUnknown
How this service works
CURB clears peer-to-peer inference swaps. We accept payment in USDC on x402 on both Base and Solana, and via pay.sh on Solana. No upstream keys on the hub.
Output
Returns a JSON object with an 'ok' boolean and a 'probe' flag indicating whether the response is a probe acknowledgment or a live settlement confirmation. On probe requests, returns a message directing real swaps to POST /v1/matches/{id}/pay. On settled swaps, confirms clearance of the peer-to-peer inference transaction.
Example use cases
Settling a matched inference swap
“My agent just got matched with a peer provider on CURB — can you settle the inference swap now and pay the USDC fee via x402 on Base?”
Probing CURB hub availability
“Check if the CURB inference swap hub is live and accepting swaps right now — just send a probe and tell me what it says.”
Routing compute via Solana payment
“I need to clear an agent inference swap through CURB using USDC on Solana — submit it and confirm the settlement went through.”
Technical details
Endpoint
POSThttps://api.curb.numetal.xyz/v1/payWhen to prefer
Choose this endpoint when you need to clear or settle a peer-to-peer AI inference swap between agents without holding upstream provider API keys on a central hub. Prefer CURB when both parties are already matched and you need to finalize the swap with USDC payment on Base or Solana via x402. This is the right choice for decentralized agent compute marketplaces where no intermediary key management is desired.
Side effects
- Payment not included — returns 402 Payment Required with x402 challenge
- Invalid or expired payment — payment header rejected
- Swap match ID not found — 404 on /v1/matches/{id}/pay
- Unsupported chain — only Base and Solana USDC accepted
- Malformed request body — schema validation error
- Hub temporarily unavailable — 503 or timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| note | string | Optional; ignored on unpaid probe. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"probe": true,
"message": "Probe ack only — settle real swaps via POST /v1/matches/{id}/pay"
}
}Tags
x402
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