v1

latestOpenAPI 3.0.0ISC2026-07-26318688.6 KB
Exchanges

Submit signed EVM UserOperation(s)

Submit signed EVM UserOperation(s) to the bundler. Pass one signature per batch in the same order as returned by POST multi/{multiId}/tx/build. Most multi-swaps produce a single batch, so typically only one signature is needed.

post/exchanges/multi/{multiId}/tx

Path parameters

multiIdstring required

Request body

signaturesstring[] required

One signature per batch, in the same order as the build response transactions array

Response

UserOperation(s) submitted

userOpHashesstring[] required

ERC-4337 UserOperation hash(es) returned by the bundler — one per batch