Connect

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Request access

1. Sign up or sign in at index.istari.ai.
2. Submit the GOI MCP access request.
3. After we enable your account, you receive an email titled Your GOI MCP credentials with everything you need to connect:

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Add as a custom connector

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Claude

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Claude on the web (claude.ai)

1. Go to Settings → Connectors on claude.ai. Team and Enterprise admins can add org-wide connectors under Admin settings → Connectors.
2. Click Add custom connector.
3. Enter the MCP URL from your email: https://mcp.goi.istari.ai/mcp.
4. Under Advanced settings, enter your Client ID and Secret from the email.
5. Click Add, then sign in with your index.istari.ai account when prompted.

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Claude Code

claude mcp add --transport http \
  --client-id YOUR_CLIENT_ID \
  --client-secret \
  istari-goi https://mcp.goi.istari.ai/mcp

claude mcp add-json istari-goi \
  '{"type":"http","url":"https://mcp.goi.istari.ai/mcp","oauth":{"clientId":"YOUR_CLIENT_ID","callbackPort":8080}}' \
  --client-secret

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ChatGPT

1. Click your avatar → Settings → Connectors.
2. Under Advanced, turn on Developer mode and accept the warning.
3. Click Add custom connector.
4. Enter a name (use istari-goi or ISTARI GOI from your email), an optional description, and the MCP URL: https://mcp.goi.istari.ai/mcp.
5. Set Authentication to OAuth.
6. If the form exposes OAuth client fields, enter your Client ID and Secret from the email.
7. Check I trust this application, then click Create.
8. Sign in with your index.istari.ai account when ChatGPT redirects you through OAuth.

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Cursor

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Cursor (IDE)

1. Open Cursor Settings (Cmd + Shift + J on Mac, Ctrl + Shift + J on Windows/Linux) → Tools & MCP.
2. Click Add new MCP server, or add an entry to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project):

{
  "mcpServers": {
    "istari-goi": {
      "url": "https://mcp.goi.istari.ai/mcp",
      "auth": {
        "CLIENT_ID": "YOUR_CLIENT_ID",
        "CLIENT_SECRET": "YOUR_CLIENT_SECRET"
      }
    }
  }
}

{
  "mcpServers": {
    "istari-goi": {
      "url": "https://mcp.goi.istari.ai/mcp",
      "auth": {
        "CLIENT_ID": "${env:GOI_MCP_CLIENT_ID}",
        "CLIENT_SECRET": "${env:GOI_MCP_CLIENT_SECRET}"
      }
    }
  }
}

3. Restart Cursor if prompted, then complete OAuth when asked to sign in.

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Cursor Cloud Agents

1. Open cursor.com/agents.
2. Open the MCP dropdown and add a custom HTTP server.
3. Enter the MCP URL: https://mcp.goi.istari.ai/mcp.
4. Enter your Client ID and Secret from the email if the form provides OAuth fields.
5. Enable the server for your session and complete OAuth when prompted.

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Other MCP clients

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Verify the connection

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Plan access

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Troubleshooting

• Monthly request quota exceeded: quotas reset on the first of the month (UTC). To raise limits, see GOI access plans.
• Authentication errors: confirm you are signed in at index.istari.ai with the same account used to request access, and that your Client ID and Secret match the values in your credentials email.
• No credentials email: confirm you submitted the access request with the same email you use at index.istari.ai. Contact support@istari.ai if it has been more than a few business days.
• ChatGPT cannot connect: confirm Developer mode is on, the URL ends with /mcp, and OAuth is selected as the authentication method.
• Cloud Agent cannot see GOI MCP: confirm the server is added and enabled in cursor.com/agents, not only in local IDE settings.
• Still stuck? Contact support@istari.ai.

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See also

• Overview: what GOI MCP provides and quota tables.
• Tools: tool reference and when to use each one.
• Privacy: logging and data retention.