Onward Flights

flights.onward/onward-flightsVersion 1.0.1

Search real flights and buy an onward ticket (proof of onward travel), paid in USDC over MPP

Status

Responds433 msNov 14, 2026, 14:30 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://onward.flights/mcpResponds433 msNov 14, 2026, 14:30 UTC

No sign-in

claude mcp add --transport http onward-flights https://onward.flights/mcp

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Settings > Connectors > Add custom connector
Name: onward-flights
Remote MCP server URL: https://onward.flights/mcp

{
  "mcpServers": {
    "onward-flights": {
      "url": "https://onward.flights/mcp"
    }
  }
}

code --add-mcp '{"name":"onward-flights","type":"http","url":"https://onward.flights/mcp"}'

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3 tools

Tools of Onward Flights
	Description		Read-only	Idempotent	Open world
`buy_ticket`Buy the ticket for a flight from search_flights, paid in USDC. Call it first without payment to get the price, wallet address and MPP challenges. After sending the USDC, call it again with tx_hash and chain (or an MPP credential in _meta "org.paymentauth/credential"). x402 clients can instead sign one of the offers in error.data.x402 and retry with the PaymentPayload in _meta "x402/payment", with no gas needed. Returns the ticket link and PDF.	Buy the ticket for a flight from search_flights, paid in USDC. Call it first without payment to get the price, wallet address and MPP challenges. After sending the USDC, call it again with tx_hash and chain (or an MPP credential in _meta "org.paymentauth/credential"). x402 clients can instead sign one of the offers in error.data.x402 and retry with the PaymentPayload in _meta "x402/payment", with no gas needed. Returns the ticket link and PDF.	No	No	Yes	Yes
`find_airports`Look up 3 letter IATA airport codes by city, airport or country name.	Look up 3 letter IATA airport codes by city, airport or country name.	Not declared	Yes	Not declared	No
`search_flights`Find one-way flights to use as an onward ticket. Returns up to 10 flights, each with an id to buy and its price in USD.	Find one-way flights to use as an onward ticket. Returns up to 10 flights, each with an id to buy and its price in USD.	Not declared	Yes	Not declared	Yes

Registry status: Active
Published: Nov 12, 2026
Updated: Nov 12, 2026
Website: https://onward.flights/agents⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Project management Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared