Kong/insomnia · error · Error

auth transforming(fromPreRequestAuth): unknown signatureMeth

Error message

auth transforming(fromPreRequestAuth): unknown signatureMethod type for oauth1: ${method}

What it means

Error "auth transforming(fromPreRequestAuth): unknown signatureMethod type for oauth1: ${method}" thrown in Kong/insomnia.

Source

Thrown at packages/insomnia-scripting-environment/src/objects/auth.ts:456

            return 'HMAC-SHA256';
          }
          case 'HMAC-SHA512': {
            throw unsupportedError;
          }
          case 'RSA-SHA1': {
            return 'RSA-SHA1';
          }
          case 'RSA-SHA256': {
            throw unsupportedError;
          }
          case 'RSA-SHA512': {
            throw unsupportedError;
          }
          case 'PLAINTEXT': {
            return 'PLAINTEXT';
          }
          default: {
            throw new Error(
              `auth transforming(fromPreRequestAuth): unknown signatureMethod type for oauth1: ${method}`,
            );
          }
        }
      })();

      return {
        type: 'oauth1',
        disabled: findValueInKvArray('disabled', authObj.oauth1) === 'true',
        signatureMethod: signMethod,
        consumerKey: findValueInKvArray('consumerKey', authObj.oauth1),
        consumerSecret: findValueInKvArray('consumerSecret', authObj.oauth1),
        tokenKey: findValueInKvArray('token', authObj.oauth1),
        tokenSecret: findValueInKvArray('tokenSecret', authObj.oauth1),
        privateKey: findValueInKvArray('privateKey', authObj.oauth1), // it is not supported in the script side
        version: findValueInKvArray('version', authObj.oauth1),
        nonce: findValueInKvArray('nonce', authObj.oauth1),
        timestamp: findValueInKvArray('timestamp', authObj.oauth1),

View on GitHub (pinned to d9bb2b0142)

When it happens

Trigger: Thrown at packages/insomnia-scripting-environment/src/objects/auth.ts:456 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Kong/insomnia@d9bb2b0142 (2026-08-26). Data as JSON: /api/errors/33c70523ec8119d0. Report an issue: GitHub.