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HTTP status: 400 · Title: “Chain not supported”

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When it fires

A route that performs an on-chain read (POST /v1/redemptions, GET /v1/markets/{id}/quote) resolved a market on a chain the API does not support for on-chain reads.

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Why it happens

  • The market is on a chain this environment does not support.
Your request is well-formed — this is a chain-support condition, not a client input error, so it is a permanent 400 (retrying will not help). (A supported chain missing a contract address is a server-config fault and returns 500 INTERNAL_ERROR, not this code.)

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How to fix

  • Confirm the market’s chain is one of the supported chains (the detail lists them).
  • If you believe the chain should be supported, contact support — it is a server configuration gap, not something the caller can correct.