The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Ontario Protocol listing page.
Find out why an agent cannot discover or call your x402 API, then publish the evidence a buyer needs to evaluate it.
Run the free buyer-discovery audit | Provider quickstart | Inspect current tools
For API providers preparing a launch:
For agent builders checking an endpoint before spending:
Or install both from the Ontario x402 Toolkit pack:
The pack is a public, unlisted snapshot of these two skills, published September 6, 2026. It is not a leaderboard placement, endorsement, or security certification.
Skills contain inspectable instructions. Installation does not create a wallet, authorize a purchase, or change spending limits.
The remote uses Streamable HTTP. No Ontario API key is required for free tools.
For clients using mcpServers, including Claude Code's .mcp.json:
For VS Code, see examples/vscode-mcp.json. The official Registry record and Smithery listing point to the same remote. A connected MCP host still needs a compatible local x402 wallet and explicit spend policy to use paid tools.
Check whether my public x402 API appears in Bazaar for "return a sourced company filing". Report observable blockers. Do not spend or publish anything.
Or call the free HTTP diagnostic directly:
Replace the example URL with your own public API. The result separates indexing preflight from sampled buyer-query retrieval, with evidence and timestamps. It does not initiate a settlement or submit your service to another registry.
| Job | Tool or endpoint | Cost |
|---|---|---|
| Diagnose retrieval across five buyer queries | bazaar_buyer_intent_gap | Free |
| Inspect x402 endpoint readiness | x402_readiness_verify | Free |
| Decide whether a proposed spend passes policy | agent_can_pay | Free |
| Find task-relevant paid API candidates | find_x402_tool | Free |
| Validate provider publication inputs | ontario_validate-service | Free |
| Publish a signed provider launch profile | ontario_list-service | 0.50 USDC on Base |
The optional publication includes a canonical HTML/JSON profile, readiness evidence, a point-in-time Bazaar retrieval snapshot, a badge, and 30 days of included automatic freshness maintenance. Providers with an MCP server can add MCP Registry and read-only remote-contract evidence to the same purchase.
Publication does not buy Coinbase or MCP Registry placement, ranking, traffic, customers, a better grade, or a safety guarantee. Use the free diagnostic first. The paid route returns HTTP 402 before payment. A challenge is not a receipt; sign locally only under the owner's policy.
ontario_validate-service with your public service name, description,
endpoint and its per-call price. Fix the returned field errors for free.ontario_list-service without payment and inspect the live requirements.params._meta["x402/payment"]. Store the profile and
result._meta["x402/payment-response"] receipt after success.Ontario supports the standard x402 MCP payment format.
The unpaid MCP result uses HTTP 200 with isError: true and PaymentRequired
in both structured content and JSON text. It is not a failed server or a sale.
The older _x402_payment argument still works. HTTP-wrapper clients can send
X-Ontario-X402-Transport: http for HTTP 402 signaling and retry with
PAYMENT-SIGNATURE. No installation or free check authorizes a payment.
Source labels, when available, are coarse client-reported hints. They do not identify a person or prove a marketplace referred a paying customer.
All nine tools in the default catalog declare output schemas, documented input parameters, and side-effect annotations. Clients can validate successful structured results instead of inferring their shape from prose. The free launch kit returns drafts only; optional live verification can create a public report; paid publication and evidence refresh remain state-changing operations.
The September 5, 2026 Smithery refresh reports 98/100, with complete schema, description, parameter, annotation, metadata, and configuration coverage. Its remaining deduction is for flat tool names. Existing names and payment contracts are retained for compatibility. This is a listing-quality measure, not a security audit, certification, or evidence of customer demand.
On September 5, 2026, an explicitly approved, owner-funded 0.50 USDC activation
settled and the exact /api/x402/list-service resource appeared in CDP Bazaar and
Agentic Market. Smithery's original listing was refreshed to the current nine
tools. The operator disclosure and transaction receipt
make the test independently inspectable. This was distribution setup, not a new
customer, independent revenue, a security certification, or guaranteed traffic.
routable: true for crawl readiness but routerDispatchEligible: false with
routerDispatchReason: settlement_required. Its paid router's settlement-history
threshold is a separate gate; a successful registration does not satisfy it.Catalog presence is not an endorsement, a paid call, or evidence of customer traffic. Check each hub's current eligibility before relying on it. The direct MCP connection and GitHub skill installation above do not depend on these hubs' routing eligibility. Free checks never authorize a purchase; paid calls still require a compatible wallet and the owner's spending policy.
Ontario Private Agent Handoff is a free self-service kit for teams operating lead-to-reviewer workflows. The local Python kit signs and encrypts selected brief fields, checks a pinned recipient, expiry, replay and local revocation, and returns a payload-free signed acceptance receipt. It makes no network calls and does not execute tools or pay. Keep your own authenticated transport.
The public page includes a rule-based setup assistant, a complete guide, expected
results, troubleshooting and a synthetic policy simulator. The assistant adapts
to the customer's environment without uploading choices, keys or task data.
Unsupported deployments are not marked ready. Run demo.py locally for real encryption,
receipt verification and a replay-denial check. No account, wallet, application,
invoice or setup call is needed. Guided implementation is no longer offered.
No hosted messaging, independent security audit or certification is claimed.
The local kit is not an MCP tool in the public Ontario server: confidential briefs and private keys must never be sent to that server. Read the kit's threat model before using real data. Existing paid provider publication remains unchanged.
Ontario provides readiness and trust signals based on observable endpoint behavior, manifest metadata, payment challenge behavior, report history, and public evidence. It does not guarantee endpoint safety, service quality, financial outcome, or future behavior.
This repository contains public integration artifacts and skills, not the production backend or its credentials. Contact: hello@ontarioprotocol.com. Security reports: security@ontarioprotocol.com.