# Agent Tools beta — custom workflow-action deploys cleanly but doesn't appear in Developer Tool Testi **URL:** \ **Category:** APIs & Integrations\ **Tags:** developer-tools\ **Created:** [May 26, 2026, 12:51pm UTC](https://community.hubspot.com/t/agent-tools-beta-custom-workflow-action-deploys-cleanly-but-doesnt-appear-in-developer-tool-testi/149698 "2026-05-26T12:51:17Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![CGlassmire9](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@CGlassmire9](https://community.hubspot.com/u/CGlassmire9)\ **Post date:** [May 26, 2026, 12:51pm UTC](https://community.hubspot.com/t/agent-tools-beta-custom-workflow-action-deploys-cleanly-but-doesnt-appear-in-developer-tool-testi/149698/1 "2026-05-26T12:51:17Z")
I’m in the Breeze Agent Tools beta. My developer account got the “approved for new app features” banner. I’ve built a custom agent tool following the [reference docs](https://developers.hubspot.com/docs/apps/developer-platform/add-features/agent-tools/reference), but it never shows up in the **Developer Tool Testing Agent → Add tool** picker. Looking for what I’m missing. **Environment:** new HubSpot Developer Platform, project on platformVersion: 2026.03, static-auth private app, deployed to a developer test account via hs project upload. **What works** - Project builds and validates clean. - App is installed on the test portal. - The action appears under **Integrated apps** in the Workflows action picker and runs successfully end-to-end against my actionUrl. **What doesn’t work** - The same component does **not** appear in the Developer Tool Testing Agent’s Add tool picker — empty search results, even unfiltered. Only HubSpot-built sample tools appear. - The project’s App Features page labels it as Workflow Action, never as an agent tool, regardless of supportedClients shape. **Configurations I’ve tried (all deploy cleanly, none surface in the picker):** 1. [{client: WORKFLOWS}, {client: AGENTS, toolType: GET\_DATA, llmConfig: {actionDescription}}] — full per-docs. 2. [{client: AGENTS, toolType: GET\_DATA, llmConfig: {actionDescription}}] — AGENTS only. 3. [{client: WORKFLOWS}, {client: AGENTS}] — exactly the form hs project add --features=workflow-action-tool scaffolds. I also confirmed labels.en.appDisplayName, labels.en.actionName, populated outputFields, isPublished: true, and proper inputFields[].typeDefinition per the reference table. **Questions** 1. Is there a portal-level toggle or backend allowlist that controls whether developer-deployed tools appear in the testing agent’s picker, beyond the developer-account beta opt-in? 2. Does the “approved for new app features” banner mean the feature is active, or is there a separate enablement step? 3. Is there a component-level deploy log I can read to see why agent-tool registration is silently skipped while workflow-action registration succeeds? Happy to share full hsmeta config if useful. Thanks. ---
**Author:** ![Jess\_Nader](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/jess_nader/32/220794_2.png) [@Jess\_Nader](https://community.hubspot.com/u/Jess_Nader)\ **Post date:** [May 26, 2026, 8:14pm UTC](https://community.hubspot.com/t/agent-tools-beta-custom-workflow-action-deploys-cleanly-but-doesnt-appear-in-developer-tool-testi/149698/2 "2026-05-26T20:14:54Z")
Heya @CGlassmire9 Thanks for posting! 🙂 From what I could verify, it seems like you’re probably not missing a schema detail in supportedClients; your config variants line up with the public agent-tool docs, and seeing the feature labeled as a Workflow Action looks to be normal because agent tools are still implemented as workflow actions under the hood. I’d love to hear from our Community contributors on this! @WesQ @Bortami [@HubSpot\_Corey](https://community.hubspot.com/t5/user/viewprofilepage/user-id/580930) - Are you able to help @CGlassmire9 with the questions above? 🙂 Thank you! Jess Community Manager ---
**Author:** ![CGlassmire9](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@CGlassmire9](https://community.hubspot.com/u/CGlassmire9)\ **Post date:** [May 27, 2026, 12:57pm UTC](https://community.hubspot.com/t/agent-tools-beta-custom-workflow-action-deploys-cleanly-but-doesnt-appear-in-developer-tool-testi/149698/3 "2026-05-27T12:57:29Z")
I have actually fixed it! I don’t know why, but deploying it the exact same just in a different portal caused it to work immediately. ---
**Author:** ![Jess\_Nader](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/jess_nader/32/220794_2.png) [@Jess\_Nader](https://community.hubspot.com/u/Jess_Nader)\ **Post date:** [May 27, 2026, 1:13pm UTC](https://community.hubspot.com/t/agent-tools-beta-custom-workflow-action-deploys-cleanly-but-doesnt-appear-in-developer-tool-testi/149698/4 "2026-05-27T13:13:57Z")
Hi @CGlassmire9 Thanks for the update! I’m glad that worked! If you come across the issue again, let us know 🙂 Jess Community Manager