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Ontario Protocol x402 Service Listing API
x402
Ontario Protocol x402 Service Listing API is a paid API for AI agents from ontarioprotocol.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-30).
Registers and lists a paid x402 HTTP endpoint on the Ontario Protocol directory so AI agents and buyers can discover, audit, and pay for it
Price / call$0.5
Success—
StatusUnknown
How this service works
List your paid x402 API for agent discovery: a 0.50 USDC Bazaar Launch Passport with readiness evidence, a five-query Coinbase Bazaar retrieval audit and a signed HTML/JSON profile. Also includes a badge, MCP/catalog copy and 30 days of freshness maintenance for a Base USDC endpoint; validation is free. The fee covers evidence processing and publication, not placement, ranking, buyers, or safety.
Output
Returns a JSON object containing the newly created listing's unique ID (e.g. {listing: {id: 'service_example'}}), confirming the endpoint has been registered in the Ontario Protocol directory and is publicly discoverable by AI agents and buyers.
Example use cases
Publishing a paid data API
“Register my new x402 service called 'Stock Price Feed' on Ontario Protocol — the endpoint is https://api.myfinance.io/stock-price, it costs 0.10 USDC per call, uses GET on base network, category is 'finance', and it returns real-time stock prices for any ticker symbol.”
Listing an AI image generation service
“I want to add my image generation endpoint to the Ontario Protocol directory — it's called 'PixelForge AI', lives at https://pixelforge.io/api/generate, charges 1.00 USDC per call via POST on the base network, and the description is 'Generates a high-resolution image from a text prompt in under 5 seconds.'”
Registering an agent tool for sale
“Can you submit my x402 endpoint 'Legal Doc Summarizer' to Ontario Protocol? The URL is https://tools.legalai.io/summarize, it costs 0.50 USDC, uses POST on eip155:8453, category is 'legal', and it summarizes contracts into plain English bullet points.”
Technical details
Endpoint
POSThttps://ontarioprotocol.com/api/x402/list-service?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you are an API provider who has built an x402-compatible paid HTTP endpoint and wants to register it in a public directory so AI agents and buyers can discover, audit, and transact with it. Prefer this over manual promotion or other directories specifically when targeting the x402/HTTP-402 payment ecosystem and Coinbase-adjacent agent infrastructure.
Side effects
- Invalid endpoint URL format causes 400 validation error
- Price string not matching numeric pattern (e.g. non-numeric characters) causes rejection
- Missing required fields like endpoint or name causes validation failure
- Duplicate endpoint submissions may create redundant listings
- Network string not recognized may cause indexing issues
- endpoint not reachable or not returning HTTP 402 may affect discovery audit scores
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"example": {
"listing": {
"id": "lst_example",
"name": "Forecastly Hourly Weather API",
"publication": {
"status": "paid_submission_processed",
"paid_submission": true,
"indexable_profile": true
},
"verification_status": "ready"
},
"provider_next_steps": {
"schema": "ontario.provider_distribution_follow_up.v1",
"bazaar_launch_passport": {
"schema": "ontario.bazaar_launch_passport.v1",
"status": "complete"
},
"strict_discovery_ready": true,
"agent_tool_procurement_passport": {
"schema": "ontario.agent_tool_procurement_passport.v1",
"status": "complete"
}
}
}
}Tags
x402
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