Agents Authorization Failing on Save: "error: Trouble updating the Agent Action Invalid key length"

[maxbraeutigam]

What happened?

I cannot save Authorization headers for Agent Actions. The server logs reveal that there is an "Invalid key length". Tried different lengths from 4 to 128 chars and different format. See below.

Version Information

0.7.7-rc1 on Railway

Steps to Reproduce

Steps

• I am creating an agent, adding all necessary information, saving fine.
• I am adding an action, copying the schema, saving fine.
• Then I need to add Authentication Headers, tried different inputs, I click on Update to save the headers: „Request failed with status code 500“

Input

Tried all possible header information, long and short, different formats, e.g.

• Bearer: test
• Basis: user:test
• Basic: Basic <base64>
• Basic: <base64>

What browsers are you seeing the problem on?

Firefox

Relevant log output

see screenshot

Screenshots

Code of Conduct

• I agree to follow this project's Code of Conduct

[danny-avila]

Hi @maxbraeutigam, this can't be reproduced. A 500 Status error could be the client losing connection to the server, the server logs would actually be helpful in this case to help you troubleshoot in any case.

Log locations:

• Docker: Project root directory ./logs
• npm: ./api/logs

There are two types of logs that can help diagnose the issue:

• debug logs (debug-YYYY-MM-DD.log)
• error logs (error-YYYY-MM-DD.log)

Error logs contain exact stack traces and are especially helpful, but both can provide valuable information.

Please only include the relevant portions of logs that correspond to when you reproduced the error.

[maxbraeutigam]

Hi @danny-avila – sorry for the late reply. Since I am deploying on railway, I didn’t know how to see the logs until they recently released the ssh feature to their cli. Now, here are the log entries.

/app/api/logs/debug-2025-04-02.log

2025-04-02T06:57:26.721Z error: Trouble updating the Agent Action Invalid key length

/app/api/logs/error-2025-04-02.log

{
  "level": "error",
  "message": "Trouble updating the Agent Action Invalid key length",
  "stack": "DataError: Invalid key length\n    at validateKeyLength (node:internal/crypto/aes:77:11)\n    at Object.aesImportKey (node:internal/crypto/aes:271:7)\n    at SubtleCrypto.importKey (node:internal/crypto/webcrypto:645:10)\n    at encryptV2 (/app/api/server/utils/crypto.js:44:44)\n    at encryptSensitiveValue (/app/api/server/services/ActionService.js:328:16)\n    at encryptMetadata (/app/api/server/services/ActionService.js:353:41)\n    at /app/api/server/routes/agents/actions.js:54:26\n    at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)\n    at next (/app/node_modules/express/lib/router/route.js:149:13)\n    at Route.dispatch (/app/node_modules/express/lib/router/route.js:119:3)"
}

[maxbraeutigam]

Now, I found my error. I was creating CREDS_KEY and CREDS_IV on my own, but the encryption needs a Buffer of a specific length and thus, not every string of the given length can be converted into a Buffer of the correct size. Just used the generator and everything is fine. Sorry for wasting your time.
https://www.librechat.ai/toolkit/creds_generator