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Synap Billing Top-Up via x402
x402
Synap Billing Top-Up via x402 is a paid API for AI agents from synap.linkrra.com, paid per call via x402, $1/call, status unknown (last checked 2026-10-23).
Tops up a Synap account balance by processing a $1 USDC micropayment via the x402 payment protocol, returning the updated credit balance.
Price / call$1
Success—
StatusUnknown
How this service works
AI powered by the people, for the people. OpenAI-compatible inference API with zero data retention — qwen3-coder-30b at $0.0675/1M in, $0.27/1M out. Contribute your GPU, earn credits.
Output
Returns a JSON object with 'ok' (boolean success flag), 'balance' (integer representing the updated account balance in micro-credits), and 'credits' (integer equal to balance, confirming the new credit total after the top-up).
Example use cases
Replenish depleted inference credits
“My Synap AI credits are running low — go ahead and top up my account with $1 USDC so I can keep making API calls without interruption.”
Automated billing top-up for agent pipeline
“Whenever my Synap balance drops below a threshold, automatically add $1 USDC to keep my AI agent pipeline running without hitting a zero-balance error.”
First-time funding of a new Synap account
“I just signed up for Synap's AI inference API — can you add $1 USDC to my new account so I can start testing the qwen3-coder model right away?”
Technical details
Endpoint
POSThttps://synap.linkrra.com/api/billing/x402/topup?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or automated pipeline needs to programmatically fund a Synap inference account using the x402 micropayment protocol (USDC on-chain). Prefer this over manual top-up flows when operating in an agentic context where credits must be replenished automatically without human intervention. This is specifically suited for x402-compatible payment flows and not for traditional credit card or fiat billing.
Side effects
- Payment failure: insufficient USDC funds in the paying wallet returns an error
- Invalid x402 payment header: malformed or missing payment proof causes rejection
- Network error: timeout or connectivity issue during payment processing
- Duplicate payment: submitting the same payment nonce twice may be rejected
- Account not found: mismatched credentials result in top-up not being applied
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"balance": 4399472,
"credits": 4399472
}
}Tags
x402
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