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Claude Code supports MCP servers over HTTP natively. Registering Octogen takes a single command, and the first tool call handles authentication automatically through a browser sign-in. No API keys, client IDs, or manual credential management are required.
1

Register the Octogen MCP server

Run the following command in your terminal:
claude mcp add --transport http octogen https://mcp.octogen.ai/mcp
This adds an entry named octogen pointing at the Octogen MCP server. Claude Code stores the configuration locally and loads it at startup.
2

Sign in on first use

The first time your agent calls an Octogen tool, Claude Code opens a browser tab with the Octogen sign-in page. Complete the sign-in flow:
  1. Enter the email that belongs to your Catalog Partner organization.
  2. Authenticate using your organization’s configured method (password, SSO, or magic link).
  3. If your account belongs to multiple organizations, select the Catalog Partner organization you want to act as.
  4. Consent to the requested scopes.
After you complete sign-in, the browser redirects back to Claude Code. The resulting access token and refresh token are cached locally. Subsequent tool calls reuse the cached token without any browser interaction.
Access tokens are valid for approximately five minutes. Claude Code refreshes them transparently in the background — you will not be prompted again unless your Octogen sign-in session expires.
3

Verify the server is registered

Confirm the entry appears in your MCP server list:
claude mcp list
You should see octogen listed with the URL https://mcp.octogen.ai/mcp.
4

Share the config with your team (optional)

To commit the MCP configuration to your repository so teammates pick it up automatically, re-run the registration command with the --scope project flag:
claude mcp add --transport http --scope project octogen https://mcp.octogen.ai/mcp
This writes the entry to .mcp.json at your repository root instead of your personal config. Each team member still signs in with their own Octogen account on first use — credentials are never stored in the project file.
Commit .mcp.json to version control. Anyone who clones the repository and runs Claude Code will have the Octogen server registered automatically.

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What your agent can do

Once connected, your agent can use the catalog read tools and, when BigQuery access is enabled, the BigQuery subscription tools:
  • list_catalogs() — discover which catalogs your organization has access to.
  • lookup_product(canonical_url, catalogs?) — resolve a product page URL to a full product record.
  • search_products(catalog, query?, limit?, cursor?) — search products by keyword inside one granted catalog.
For a full description of each tool, including BigQuery listing and subscriber helpers, see the MCP overview.