[BUG] slackLists.items API errors

[mcsescott]

I realize they are new, but I am running into an issue with the new Lists APIs.

While they aren't supported in the SDKs yet (when, please? 😁) I am using just an await fetch to call them manually. I have tested 3 different APIs:

• ✅ slackLists.items.list - works just fine
• ❌ slackLists.items.update - result: { ok: false, error: "list_not_found" } (the List is shared in the same channel that the workflow is in, and I am using the token of the workflow)
• ❌ slackLists.items.create - Error: Error running 'Start' command: exit status 1 (sdk_hook_invocation_failed)

Slack doctor is good, and everything appears up to date:

SYSTEM

    ✔ Operating System (the kernel and drivers)
        Version: windows (amd64)

    ✔ Git (a version control system)
        Version: git version 2.45.2.windows.1


SLACK

    ✔ CLI (this tool for building Slack apps)
        Version: 3.6.0

    ✔ Configurations (any adjustments to settings)
        System ID: e291ea02-05f3-435c-redacted
        Last updated: 2025-08-14 16:01:21 -05:00
        Experiments: bolt, bolt-install

    ✔ Credentials (your Slack authentication)
        Redacted, all valid


PROJECT

    ✔ Configurations (your project's CLI settings)
        Manifest source: local
        Project ID: 55f41bdd-3584-44af-redacted

    ✔ Runtime (foundations for the application)
        deno: 2.3.5
        typescript: 5.8.3
        v8: 13.7.152.6-rusty

    ✔ Dependencies (requisites for development)
        deno_slack_hooks: 1.4.0
        deno_slack_sdk: 2.15.1
        deno_slack_api: 2.8.0

Errors: 0

Thanks in advance...

[mcsescott]

I believe this may be some sort of token issue.

Since this is a coded function, I am using the "xwfp" token of the workflow as the authorization. I have tried it with an await fetch ("https://slack.com/api/slackLists.items.create" ... as well as a client.apiCall("slackList.items.create" ... and get the same errors.

[zimeg]

Hey @mcsescott! 👋 Thanks for sharing these findings with us 🎁 ✨

We haven't had updates around SDK support of the various list methods since #329 and I wonder if these are the same errors that were encountered before?

For fast reference:

📚 https://docs.slack.dev/reference/methods/slacklists.items.create
📚 https://docs.slack.dev/reference/methods/slacklists.items.list
📚 https://docs.slack.dev/reference/methods/slacklists.items.update

The error from the slackLists.items.update method appears to be a server side issue which might be best shared with email to feedback@slack.com 🙏

I am curious about the sdk_hook_invocation_failed error found when calling the slackLists.items.create method though - if possible, can you post the related debug logs? 🔍

[mcsescott]

Hi @zimeg. #329 is similar, but that was before Slack released the methods publicly. So, it is still an issue.

I already have a case open with CE, and SGil has also gotten involved (He has my AppID and team). Apparently these methods weren't tested with xwfp tokens. 😉

I can certainly post logs, but they don't seem to provide much more info. I won't be able to post logs until tomorrow, though.

[mcsescott]

Can I get an update on this please?