heura docs
One OpenAI-compatible key. Each call goes to the healthy seller with the deepest discount. You sign in with an Ethereum-style wallet on Robinhood Chain.
Pre-launch
heura targets Robinhood Chain mainnet (chain id 4663) and takes payment in USDG. It is not launched and nothing has been audited. The API address is https://api.useheura.com/v1 and answers today, but only one seller (run by heura) is behind it so far, so do not send real funds until launch is announced.
Three ways in
Buy with a key
Prepaid balance, one API key, any OpenAI SDK.
Pay per request
No account. An agent pays one request in USDG.
Sell capacity
List an OpenAI-compatible endpoint at a discount.
What works today
| Area | Status | Evidence |
|---|---|---|
| Wallet sign-in, API keys, spend caps | Working in tests | EIP-191 signatures, single-use nonce, key shown once |
| Price routing and failover | Working in tests | Deepest discount wins; a dead seller is skipped and switched off |
| Seller discount passed to the buyer | Working in tests | 40% off bills 60% of list; 80% off bills 20% |
| Playground | Working in tests | Streaming reply, charged to the wallet balance |
| USDG top-up | Built, tested against recorded data | Receipt check, wrong payer and double claim are rejected in tests; not yet exercised on a live network |
| Staking | Removed | The earlier staking program is gone. Staking returns only after a Solidity version is written and audited |
| x402 pay per request | Built, not live | One scheme (transfer-receipt) on Robinhood Chain: you send a USDG transfer, the server reads the receipt. No facilitator. Replay and tampering are refused in tests |
| Real seller supply | Started | One seller so far, run by heura (a DeepSeek account, 20% below list). Open to others through Sell |
| API address | Reachable | https://api.useheura.com/v1 (OpenAI-compatible). Needs a key; one seller so far |
| Independent audit | Not yet | Nothing here has been audited |
Where to go next
- Quickstart — Your first call in five steps.
- How it works — Routing, pricing, billing and failover.
- API reference — Every endpoint, request and response.
- Security and trust — What is protected, and what is not yet.