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Reese Norris 2df0ee6eb8 protocol: match VATSIM pilot rating IDs and names

Use the official pilot scale (0 P0, 1 PPL, 3 IR, 7 CMEL, 15 ATPL,
31 FI, 63 FE) for storage, UI labels, validation, and docs.

2026-07-23 20:05:54 -04:00

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Authentication Tokens

FSD authentication tokens adhere to the JSON Web Token (JWT) standard. They are retrieved via HTTPS and subsequently transmitted in plaintext to the FSD server as part of the login process (#AP / #AA Token field).

Historically, Add Pilot (#AP) and Add ATC (#AA) packets used plaintext passwords in the Token field. On modern VATSIM, clients using protocol revision 100 or 101 present a JWT instead. openfsd accepts either a local JWT (private network) or a configured auth path depending on deployment — see the openfsd README / config.

Endpoint (public VATSIM)

POST https://auth.vatsim.net/api/fsd-jwt

Request body

{
  "cid":      "123456",
  "password": "s3cr3t"
}

Response body (success)

{
  "success": true,
  "token":   "<jwt token>"
}

Response body (error)

{
  "success":   false,
  "error_msg": "<error message>"
}

Token fields

See JWT Standard Fields.

Public VATSIM FSD JWTs have been observed in the following shape (example payload; values illustrative):

Header

{
  "typ": "JWT",
  "alg": "HS256"
}

Payload example

{
  "iat": 1735772371,
  "nbf": 1735772251,
  "exp": 1735772671,
  "iss": "https://auth.vatsim.net/api/fsd-jwt",
  "sub": "123456",
  "aud": "fsd-live",
  "jti": "rK7v1yEs1TExNDI1S",
  "controller_rating": 0,
  "pilot_rating":      0
}

Claim	Meaning (empirical)	Notes
`sub`	VATSIM CID	Subject
`aud`	Audience	Observed `fsd-live` on the public network; other audiences unconfirmed
`controller_rating`	ATC rating claim	Numeric; full mapping to wire Network Ratings is not fully documented here
`pilot_rating`	Pilot rating claim	Numeric VATSIM pilot rating ID (`0`, `1`, `3`, `7`, `15`, `31`, `63`) — see enumerations.md

openfsd’s private JWT path uses its own claims (including a single network rating), which is not identical to the public VATSIM payload above.

Encoded example

eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE3MzU3NzIzNzEsIm5iZiI6MTczNTc3MjI1MSwiZXhwIjoxNzM1NzcyNjcxLCJpc3MiOiJodHRwczovL2F1dGgudmF0c2ltLm5ldC9hcGkvZnNkLWp3dCIsInN1YiI6IjEyMzQ1NiIsImF1ZCI6ImZzZC1saXZlIiwianRpIjoicks3djF5RXMxVEV4TkRJMVMiLCJjb250cm9sbGVyX3JhdGluZyI6MCwicGlsb3RfcmF0aW5nIjowfQ.3aqOBIqhAP9RndXN1lao9OPsqMixX2Yndn89NpsvVjA

(Signature verification requires the issuer’s secret; example signature is illustrative.)

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