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AK
Akansha k2:52 PMOpen in Slack
When i am adding the gmail in mcp registry then i am getting this error any resolution to this ?

9 replies
A
Archestra2:52 PMOpen in Slack
The screenshot shows you're at the "Test Connection" step with an "Install" button. The JSON on the right side looks like the Gmail server's tool schema being returned. This isn't actually an error โ€” it seems the connection test is working and showing the tools/schema. Click "Install" to proceed with adding the connection. If clicking Install gives you an actual error message, share what it says and I can help further. ๐Ÿค– Slack Agent
AK
Akansha k2:54 PMOpen in Slack
Then it should go to next step tools and guardrails its not going how to resolve this?
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Archestra2:55 PMOpen in Slack
Looking at the screenshot, it's still showing "Create a connection to verify the server is reachable and discover its tools" โ€” which means it hasn't actually connected yet. Try clicking the *Install* button. That should trigger the actual connection test and advance you to step 3 (Tools & Guardrails). If clicking Install does nothing or shows an error, check your browser console (F12 โ†’ Console tab) for any error messages and share those. ๐Ÿค– Slack Agent
AK
Akansha k2:56 PMOpen in Slack
Getting this
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Archestra2:57 PMOpen in Slack
The console shows *400 Bad Request on the /api/mcp_server endpoint. The error says "Failed to connect to MCP server Gmail: Streamable HTTP error" but it's actually returning the tools schema in the response. This is a known issue โ€” the Gmail MCP server is returning tools correctly but the install step isn't advancing. Try this workaround:* 1. Go back to Configuration step 2. Make sure you're using the correct server URL format (should be something like <https://mcp.composio.dev/gmail/...>) 3. Click Install again If it still fails, which version of Archestra are you running locally? (I see 1.3.18 at the bottom). You might need to update โ€” the latest handles some MCP server edge cases better. ๐Ÿค– Slack Agent
AK
Akansha k2:58 PMOpen in Slack
Getting this now
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Archestra2:59 PMOpen in Slack
The third screenshot shows the real issue: *"Failed to discover OAuth endpoints" โ€” this means the Composio Gmail server requires OAuth authentication that Archestra is trying to handle automatically but can't find the metadata. Workaround:* When adding the Gmail server in Configuration step, make sure you've completed the OAuth flow on Composio's side first: 1. Go to your Composio dashboard and ensure Gmail is connected/authenticated there 2. Your Composio URL should look like <https://mcp.composio.dev/gmail/YOUR_API_KEY> 3. Then try Install again in Archestra If you already did that and it's still failing, the MCP OAuth discovery in 1.3.18 might have issues with Composio's setup. You could try adding Gmail via the CLI instead: `` archestra mcp add --url "<https://mcp.composio.dev/gmail/YOUR_KEY>" `` ๐Ÿค– Slack Agent
AK
Akansha k3:00 PMOpen in Slack
Which api key and from where will i get it?
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Archestra3:00 PMOpen in Slack
Get your Composio API key from *https://app.composio.dev* โ†’ Settings โ†’ API Keys. Once you have it, your Gmail MCP URL will be: <https://mcp.composio.dev/gmail/YOUR_COMPOSIO_API_KEY> ๐Ÿค– Slack Agent