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Verified Burst — Pay-Per-Correct Inference for Agents
x402
Verified Burst — Pay-Per-Correct Inference for Agents is a paid API for AI agents from burst.solcleus.com, paid per call via x402, $0.004/call, status down (last checked 2026-09-15).
Runs best-of-N LLM inference bursts on Cerebras silicon, verifies the answer via self-consistency or a judge, and charges USDC only when the answer passes verification.
Price / call$0.004
Success—
StatusDown
How this service works
Verified Burst: pay-per-correct-answer inference bursts for agents. Escalate to fast Cerebras silicon, sample best-of-N, verify, and settle over x402 — charged only if the answer passes a verifier. pip install verified-burst.
Output
Returns a verified answer string, a status code (ok, not_verified, payment_required, budget_exceeded), a boolean indicating whether the charge was applied, the on-chain settlement tx hash if charged, the USD fee deducted, and the remaining wallet budget after the call.
Example use cases
Example prompt
“Use Verified Burst to answer this question: 'Which of these three SQL queries is most likely to cause a full table scan?' — sample 5 times using best-of-N strategy with self-consistency verification, and only charge me if the answer is verified.”
Technical details
Endpoint
GEThttps://burst.solcleus.com/v1/burstWhen to prefer
Choose this endpoint when an AI agent needs high-confidence answers to critical decisions and must avoid paying for wrong or hallucinated outputs. Ideal for agentic pipelines where correctness is gated — pay only on verified success, leveraging Cerebras speed for low-latency best-of-N sampling. Prefer over standard LLM APIs when on-chain auditability of inference charges matters, or when you want self-consistency or judge-based verification baked into the payment flow.
Side effects
- not_verified: answer did not pass the verifier — no charge applied, agent should retry or escalate
- payment_required: wallet has no x402 budget set up — agent must fund the wallet before calling
- budget_exceeded: the remaining wallet balance is insufficient to cover the service fee
- model mismatch: if a custom model is specified without a matching BYOK key, inference fails
- invalid verifier enum: passing an unsupported verifier value returns a validation error
- answer_key misconfigured: malformed regex or JSON path causes verifier to always fail
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| answer | string | The verified answer (present when status=ok). |
| status | string | ok | not_verified | payment_required | budget_exceeded |
| charged | boolean | True only if verified; you pay nothing otherwise. |
| verified | boolean | Whether the verifier passed (gates the charge). |
| settle_tx | string | On-chain settlement tx hash when charged. |
| amount_usd | number | Service fee charged on a verified burst. |
| remaining_budget_usd | number | Wallet budget left after this call. |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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