[stevelacey]

Motivation

Onward Flights makes onward tickets (proof of onward travel) from real flight itineraries. Airlines often won't board, and immigration often won't admit, travellers on a one-way ticket unless they can show a flight out. Agents can search real flights and buy a ticket with the traveller's name on it, delivered as a web page and a PDF, paid per ticket in USDC on Base.

• Service name: Onward Flights
• Live service URL: https://onward.flights
• Provider URL: https://onward.flights
• OpenAPI or API reference URL: https://onward.flights/openapi.json (agent guide: https://onward.flights/llms.txt)

Summary

• The service is live and accepts MPP payments.
• This PR adds or updates its entry in schemas/services.ts.
• Listed endpoints, prices, and payment methods match the live service.
• Public documentation and icon URLs are stable and accessible.
• pnpm generate:discovery succeeds.
• pnpm check:types passes.
• pnpm build succeeds.

Key design considerations

• Integration: first-party
• Payment methods and intents: evm / charge in native USDC (Base primarily; Ethereum, Optimism and Polygon challenges are also offered), with credentialTypes: ["hash"]. POST /api/purchase without a credential returns 402 with one WWW-Authenticate: Payment challenge per chain. The server verifies the transfer on-chain before issuing the ticket and consumes each transaction hash once. The price is $5, or $10 for departures from some countries, so the entry is marked dynamic. The same flow is available over MCP at https://onward.flights/mcp using the JSON-RPC transport (-32042, org.paymentauth/credential). It's also registered on MPPScan.
• Provider relationship: We own and operate onward.flights.
• Directory fit: Travel isn't covered by the directory yet. The closest listing, GoFlightLabs, is a flight data API, while this sells a finished document for one traveller. Onward Flights has been selling tickets to travellers since 2017. The agent API is new and uses the same backend.

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🔀 Changed Services

✅ Added

• onward-flights

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