Experimental Tool Router Feedback

[CryogenicPlanet]

Please share feedback on the new experimental tool router here

docs here: https://docs.composio.dev/docs/tool-router/quick-start

examples (will be adding more examples here as we build more with tool router)

• https://github.com/ComposioHQ/auri-discord-bot/blob/master/src/agents/moderation.ts

[PhumudzoSly]

This is exactly what I've been looking for.
Going to build a vibe-marketing platform with this.

[hainsdominic]

I'm not sure how to authenticate tools beforehand. Should I use Auth Configs or MCP Configs? The COMPOSIO_SEARCH_TOOLS tool connection_statuses shows no active connection when there is one, using Auth Configs.

Found out its auth configs, but I'm still trying to figure out auth. I'm passing the userId of a user that has active connections (that I did set up beforehand), yet in the tool response it shows no active connections:

"connection_statuses": [
      {
        "toolkit": "SLACK",
        "active_connection": false,
        "connection_details": {},
        "required_parameters_for_connection": [],
        "message": "Connection not found, use COMPOSIO_MANAGE_CONNECTIONS to initiate a new connection."
      }
]

[CryogenicPlanet]

will get this fixed!

[rohanprabhu]

Hey @hainsdominic - thanks for getting in touch! Trying to reproduce this at my end, would you be able to share the arguments you are using for creating a new tool router session? Or whatever code you have which is running into this issue, that'll speed up the repro at my end.

[PhumudzoSly]

If i create a session like this

const session = await composio.experimental.toolRouter.createSession("hey@example.com", {
  toolkits: ["github", "slack"],
})

I expect only github and slack to be available, but a simple prompt like "what's new on my gmail" will give the AI the ability to use the gmail toolkit as well.

[hainsdominic]

Hey @hainsdominic - thanks for getting in touch! Trying to reproduce this at my end, would you be able to share the arguments you are using for creating a new tool router session? Or whatever code you have which is running into this issue, that'll speed up the repro at my end.

Authorizing a user with the web UI, then I pass this userId to the toolRouter, the tool router search tools call doesn't return any active connections.

[rohanprabhu]

@hainsdominic I have confirmed the bug, a fix will be live shortly!

[CryogenicPlanet]

#2011 (reply in thread)

hey @PhumudzoSly yeah this is a known issue, and should be live by end of day today

[obielwb]

Hi, love the tool router! I just want to know if there is any way that I can add my own MCP servers to the toolkit?

[CryogenicPlanet]

no unfortunately this is not supported, we might support in the future

[Ryner01]

Hello, tool router is amazing! Exactly what I am looking for.

But there seems to be a bug with connecting api key based tools like posthog. Standard oauth flow works.

This is what I get when agents tries to call COMPOSIO_MANAGE_CONNECTIONS

input:

{"toolkits":["posthog"]}

Output:

{
  "data": {
    "message": "All connection attempts failed",
    "results": {
      "posthog": {
        "toolkit": "posthog",
        "status": "failed",
        "error_message": "Default auth config not found for posthog",
        "was_reinitiated": false
      }
    },
    "summary": {
      "total_toolkits": 1,
      "active_connections": 0,
      "initiated_connections": 0,
      "requires_parameters": 0,
      "failed_connections": 1
    }
  },
  "successful": true,
  "error": null,
  "version": "latest",
  "logs": []
}

🕒 Timestamp:
Nov 12, 2025 — 21:03:41.127

💻 Language & SDK:
mcp — mcp-server

🧾 Log ID:
log_0avJr0dfKX_s

👤 User ID:
u_2f059ad7-705a-4ea7-8d22-1d870cfa2395_w_d9d6cdc2-8632-472b-83d0-769267bd65a0

🔗 Connection ID:
(none)

⏱️ Duration:
147 ms

💬 Session:
u_2f059a

---

Whats weird about this is that posthog config is defined:

and used like this in toolkit restrictions for session:

  {
    toolkit: 'posthog',
    authConfigId: 'ac_Wd0MaHIT0OvU',
  },

const session = await composio.experimental.toolRouter.createSession(`u_${userId}_w_${workspaceId}`, {
    manuallyManageConnections: false,
    toolkits: getToolkitAuthConfigs(),
})

When I try to connect to it using connect account button in dashboard it works for test user. So it seems like issue with COMPOSIO_MANAGE_CONNECTIONS.

But maybe I am misconfiguring something because I tried to connect posthog in https://rube.app/chat and it does indeed work:

Debug info:

@project_id: pr_d0sEIn9APVli
@org_id: ok_Nm8biztJLB3u
@org_member_email: predrag@9roads.io
@user_id: 5d317a8b-d4d7-4aab-9961-e03f0ea7012d
@playground_test_user_id: pg-test-5d317a8b-d4d7-4aab-9961-e03f0ea7012d

[yousifa]

This is great, but would be helpful if we can use it with custom tools