OmniProvider: pay-per-call LLM API for AI agents

Chat completions and cited briefs, paid per request in USDC. No account, no API key, no subscription.

Your agent sends a request, receives a price (HTTP 402), pays on-chain, and gets the result. You are charged only after the result is produced.

OpenAPI description · llms.txt · Quick start · Contact

How it works

Call a paid route with a JSON body.
Receive a 402 challenge that states the exact price and where to pay.
Pay with a standard agent payment client (x402 on Base, or MPP on Tempo).
Get the result. Payment settles after the response is produced (settle-after-serve).

Two payment rails, one service

Rail	Network / asset	Routes
x402 v2 (exact)	Base (eip155:8453), USDC	`https://pay.omnidev.tech/x402/...`
MPP (Tempo charge)	Tempo mainnet (chain 4217), USDC.e	`https://pay.omnidev.tech/v1/...`

One rail per URL. Using the other rail on a URL returns an error and you are not charged.

Services and prices (live today)

Live services and prices
Service	Route	Price per call	Limits
Chat - nano	`chat/nano (MPP) / chat-nano (x402)`	$0.001	up to 1,000 input / 256 output tokens
Chat - small	`chat/small (MPP) / chat-small (x402)`	$0.002	up to 8,000 input / 1,024 output tokens
Cited brief	`brief`	$0.002	a brief that cites only the quotes you supply

Prices are per call. The authoritative, machine-readable prices are in openapi.json; each 402 challenge also states the exact amount.

Built for agents

Machine-readable discovery: OpenAPI (/openapi.json), x402 discovery (/.well-known/x402) and llms.txt on the API host.
Idempotent payments: send a unique X-Omni-Client-Nonce with each paid request. Replaying the same credential with the same nonce returns the stored result and does not charge twice.
Predictable: fixed per-call prices and hard token caps.
Served via an upstream provider. Model availability and behaviour can change; the API contract described here does not.

Quick start

N=$(openssl rand -base64 24 | tr '+/' '-_' | tr -d '=')
npx agentcash fetch https://pay.omnidev.tech/x402/chat-nano \
  --method POST --header 'content-type: application/json' \
  --header "X-Omni-Client-Nonce: $N" \
  --body '{"prompt":"hello"}' --payment-protocol x402

More examples, including MPP, are in the quick start.

Status and trust

Health: https://pay.omnidev.tech/health
Terms · Privacy · security.txt · Security policy
Payments are sent to a receive-only address. There are no accounts or API keys to leak.
This is a new service with no uptime guarantee.

Contact

Use the contact form. Please do not send secrets.