Use Atlantic's public MCP server

The public MCP server gives AI assistants read-only access to the published sources on Atlantic Agentic Labs and LightHouse™: this documentation and the items on Atlantic’s knowledge pages. Results are exact quotations with a link to the source.

The server is separate from LightHouse’s MCP server, which reads a tenant and requires sign-in or a machine key. The public server requires no account or credential and has no access to any tenant.

Tools

The server is read-only and provides four tools:

Tool	What it does
search_docs	Searches this documentation, the OpenAPI document of the LightHouse API and the MCP reference
search_published_knowledge	Searches the items Atlantic has published on its knowledge pages
read_page	Returns one page of this documentation as Markdown, by its address or path
list_pages	Returns this documentation’s table of contents

The two search tools return between 1 and 8 passages that best match the query, quoted exactly. Each passage includes:

• a deep link to the page and section it comes from;
• the version or date of the source;
• evidence fields that identify the source passage.

read_page returns the page’s Markdown with its title, address and last-updated date. It reads public pages of this site only. Requests for the client documentation, draft pages and unknown paths are refused. A very long page is truncated, with a note stating the truncation and the page’s address.

list_pages returns each page’s section, title, path and one-line description.

The server does not call a language model or generate answers. The connected assistant composes its reply from the tool results. The server has no access to tenant data, holds no accounts and provides no tool that modifies data. Every tool is annotated readOnlyHint: true and openWorldHint: false.

Address

https://ask.atlanticagenticlabs.com/mcp

The server uses the streamable HTTP transport of the current MCP specification. It is unauthenticated. Configure it without sign-in, an OAuth client or request headers.

Limits and retention

• Rate limits. Requests are limited for each caller and for the service as a whole. The limits are tighter than those of the search in the Ask Octy panel. A request over a limit receives HTTP 429 Too Many Requests with a Retry-After header stating the wait before the next attempt.
• Query retention. Queries are retained for 12 months for documentation improvement, on the same terms as Ask Octy™ on the docs. Email addresses, telephone numbers, keys and tokens are redacted before a query is stored. IP addresses and other identifiers are not stored with the query.

Do not include personal or confidential information in a query.

For AI agents

• Atlantic is Atlantic Agentic Labs. It builds LightHouse™, which manages an organisation’s AI agents, models, approvals, access and billing on the Atlantic Agentic Engine, in the organisation’s own cloud account or on its own servers.
• The server is https://ask.atlanticagenticlabs.com/mcp, over streamable HTTP, with no authentication.
• The tools. search_docs and search_published_knowledge return passages quoted exactly, with deep links, the version or date, and evidence fields. read_page returns one public page as Markdown, with its title, address and last-updated date. list_pages returns the table of contents.
• First call. Call list_pages for the documentation’s contents, or search_docs with the question. Call read_page for a whole page.
• Citations. Cite the deep links returned by the tools.
• Rate limits. On HTTP 429, wait for the time given in Retry-After before the next attempt.
• Out of scope. The server provides no prices, makes no commitments on Atlantic’s behalf, does not contact or hand over to a person, does not generate answers, reads no tenant data and makes no changes. Refer these requests to Atlantic Agentic Labs.

The same summary leads llms.txt and llms-full.txt.

Claude

Claude on the web and in the desktop app

Custom connectors apply to Claude on the web and Claude Desktop for the same account. Add the server once.

On a Free, Pro or Max plan:

1. Go to Customize → Connectors.
2. Select + Add, then Add custom connector.
3. Enter the name Atlantic and the address above, then select Continue.
4. Review the detected settings and select Continue.
5. Under Authentication, choose No sign in.
6. Select Add.

Result: Atlantic is listed under Customize → Connectors. The Free plan allows one custom connector.

On a Team or Enterprise plan, an Owner or Primary Owner adds the server for the organisation. On an Enterprise plan, a member whose custom role includes managing access to Libraries can add it too.

1. Go to Organization settings → Connectors.
2. Select Add, then Custom, then Web.
3. Enter the name Atlantic and the address above, then select Continue.
4. Review the detected settings and select Continue.
5. Under Authentication, choose No sign in. Leave Request headers empty.
6. Select Add.

Result: members see Atlantic under Customize → Connectors, labelled Custom.

To use it in a conversation, select +, then Connectors, and turn Atlantic on.

Claude Code

claude mcp add --transport http atlantic https://ask.atlanticagenticlabs.com/mcp

--scope user adds the server to every project. --scope project records it in the project’s .mcp.json for all contributors. The entry contains no credential, and .mcp.json can be committed. claude mcp list shows whether the server is connected, and /mcp inside Claude Code shows its status and tools.

ChatGPT

ChatGPT on the web adds the server as a custom MCP server. Workspace permissions and security settings apply. If the option to add a custom MCP server is not available, contact the ChatGPT workspace administrator.

1. Go to Plugins in ChatGPT, select +, then Add custom MCP server.
2. Enter the name Atlantic and a description, for example “Atlantic Agentic Labs and LightHouse public documentation”.
3. Under Connection, enter the address above as the Server URL.
4. Under authentication, choose No authentication.
5. Review the risk warning and accept it.
6. Select Create as a plugin, then install the plugin.

In a conversation, type @ and select Atlantic. ChatGPT requests confirmation before write actions. All four tools carry the read-only annotation, and ChatGPT does not treat them as write actions.

GitHub Copilot in Visual Studio Code

Run MCP: Add Server from the Command Palette, choose HTTP (HTTP or Server-Sent Events), enter the address above and the name atlantic, and choose Copilot Global for all workspaces.

For file-based configuration, add the server to .copilot/mcp-config.json in your home directory (every workspace) or to .mcp.json at the workspace root (shared with the workspace):

{
  "mcpServers": {
    "atlantic": {
      "type": "http",
      "url": "https://ask.atlanticagenticlabs.com/mcp",
      "tools": ["*"]
    }
  }
}

The earlier .vscode/mcp.json format, with a top-level servers object, belongs to the Local harness, which Visual Studio Code has deprecated. Use the files above for new configurations.

Cursor

Add the server to .cursor/mcp.json in a project’s root (that project) or in the home directory (all projects).

{
  "mcpServers": {
    "atlantic": {
      "url": "https://ask.atlanticagenticlabs.com/mcp"
    }
  }
}

Open Customize in Cursor’s sidebar, find atlantic, and confirm that its toggle is on. A disabled server does not load.

OpenAI Codex

codex mcp add atlantic --url https://ask.atlanticagenticlabs.com/mcp

Alternatively, add it to .codex/config.toml in the home directory or in a trusted project:

[mcp_servers.atlantic]
url = "https://ask.atlanticagenticlabs.com/mcp"

codex mcp list shows the configured servers, and /mcp in Codex shows the active ones.

Any other MCP client

Any client that supports remote MCP servers over streamable HTTP can connect with the address above and no authentication. Connect a client covers LightHouse’s own MCP server, which reads a tenant.