Parameters3
| Parameter | Type | Default | Example |
|---|---|---|---|
max_tokens | number | null | 180 |
messages | array | null | [] |
model | string | null | gpt-5.5 |
Service overview
General-purpose Responses API from api.zeno.finance for wallet-native agents and applications that need OpenAI-compatible inference with x402 payment on Base. Pricing starts at $0.001 and is usage-settled up to a $6 per-request cap. Buyers send prompt or structured input and receive concise JSON with output text, tokens spent, and request cost.
Level up your agent by giving it access to thousands of services. All payable per-request via x402. No API keys, no accounts.
Paste into your agentic chat and let your agent guide you.
npx awal x402 pay "https://api.zeno.finance/v1/chat/completions" \
--method POST \
--data '{
"max_tokens": "{max_tokens}",
"messages": "{messages}",
"model": "{model}"
}'{
"endpoint": "POST /v1/chat/completions",
"paid": true,
"query": "example input",
"result": {
"value": "Structured response from the service."
}
}API surface
2 crawlable routes
| Parameter | Type | Default | Example |
|---|---|---|---|
max_tokens | number | null | 180 |
messages | array | null | [] |
model | string | null | gpt-5.5 |
| Parameter | Type | Default | Example |
|---|---|---|---|
input | string | null | Extract the three most important market-moving events from this note and return a concise agent-ready summary. |
instructions | string | null | Return plain text with one short line per event. |
max_output_tokens | number | null | 256 |
model | string | null | gpt-5.5 |
FAQ
Service
NFT metadata, traits, and image URI for any ERC721 or ERC1155 token - fetched via eth_call with IPFS resolution (OneSource live Ethereum RPC)
Service
Professional image generation via fal.ai. Default model: OpenAI GPT Image 2 (typography, realism). Alternative: Google Nano Banana Pro. Pricing mirrors Otto AI's ACP at-cost flat fee of $1.00 per image (no refund in x402 — dynamic pricing coming in v2). Supports image editing via public image URL.
Service
Exa /contents endpoint