Gas Estimation Errors - Cosmos Docs

These errors occur when gas pricing is misconfigured or when transaction simulation fails. They are most commonly encountered when using "auto" fee estimation.

Missing Gas Price

Thrown when using "auto" fee without setting a gas price:

"Gas price must be set in the client options when auto gas is used."

Fix: pass gasPrice when creating the signing client:

const client = await SigningStargateClient.connectWithSigner(endpoint, signer, {
  gasPrice: GasPrice.fromString("0.025uatom"),
});

Simulation Failure

simulate throws if the signer address is not found in the wallet:

"Failed to retrieve account from signer"

If the simulation itself fails (e.g. message validation errors), the underlying gRPC error propagates.