# Introducing the RTLCA MCP Server for conversational LCA **URL:** \ **Category:** News and Updates\ **Tags:** ai\ **Created:** [April 20, 2026, 6:38am UTC](https://community.realtimelca.com/t/introducing-the-rtlca-mcp-server-for-conversational-lca/454 "2026-04-20T06:38:17Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![kilianspeiser](https://dub1.discourse-cdn.com/flex005/user_avatar/community.realtimelca.com/kilianspeiser/32/938_2.png) [@kilianspeiser](https://community.realtimelca.com/u/kilianspeiser)\ **Post date:** [April 20, 2026, 6:38am UTC](https://community.realtimelca.com/t/introducing-the-rtlca-mcp-server-for-conversational-lca/454/1 "2026-04-20T06:38:18Z")
# Introducing the Real-Time LCA MCP Server We’re thrilled to announce the public launch of the **Real-Time LCA MCP Server**. With this hosted [Model Context Protocol](https://modelcontextprotocol.io/) server you connect your AI directly to Real-Time LCA. No local installation, no manual API calls, no scripting. Just natural language and your existing Real-Time LCA account. ## What you can do Connect once, and your AI gains access to your Real-Time LCA workspace: - **Projects** : List and manage building projects; view GWP metrics, status, and metadata at a glance - **Material Mapping** : Map BIM materials to EPDs from the global library, preview AI-suggested matches, or trigger full automapping in one step - **BIM Inspection** : Traverse construction hierarchies, identify unmapped types, and drill into material properties - **LCA Reports** : Generate BR18-compliant XML and Excel reports and download them directly - **EPD & Materials Library** : Search by name, category, datasource, or manufacturer; create, patch, and map EPDs and constructions to your inventory. - **Dashboards & Timelines** : Pull GWP summaries, emissions-over-time charts, stage breakdowns, and project event histories **53 tools** are available across 7 functional areas. ## How to connect The server is hosted at `https://mcp.realtimelca.com/mcp` and ready to use. Authentication is handled via OAuth using your existing Real-Time LCA login — no API keys required. ### Claude AI Configure MCP servers in Claude.ai 1. Add servers at [claude.ai/customize/connectors](https://claude.ai/customize/connectors). On Team and Enterprise plans, only admins can add servers. 2. Plus sign → Add custom connector → Add this URL [https://mcp.realtimelca.com/mcp](https://mcp.realtimelca.com/mcp) 3. Authenticate the MCP server 4. Complete any required authentication steps in Claude.ai. The next time you mention RTLCA in a chat, Claude will detect the access and ask you for permission to execute tools. ### Claude Code Run this single command in your terminal: ```bash claude mcp add realtimelca --transport http https://mcp.realtimelca.com/mcp ``` Claude Code will prompt you to authenticate on first use. ### Local AI We are also preparing a guide on how to connect to this MCP via a local LLM. Then you don’t need Claude or other subscriptions. No token limit, no sharing of data. Stay tuned… ### Codex 1. Open Codex 2. Go to Settings → Configurations → Open config.toml 3. Go to Configurations 4. Open config.toml 5. Paste the following at the very top of the file mcp\_oauth\_callback\_port = 5555 [mcp\_servers.rtlca] url = “[https://mcp.realtimelca.com/mcp](https://mcp.realtimelca.com/mcp)” 6. Close Codex (Make sure the process is not running anymore) 7. Restart Codex 8. Go to Settings → MCP Servers 9. You should now be able to see the rtlca connection → Click Authenticate 10. A browser will pop up and you need to enter your RTLCA credentials 11. Return to Codex and test the RTLCA connection in a Chat, e.g. “What projects do I have in RTLCA?” ## Example prompts to try - _“List all my projects and show me the GWP for each”_ - _“Which materials in project X are still unmapped?”_ - _“Map missing materials with most adequate EPDs and show me the suggested matches”_ - _“Generate a BR18 XML report for project X”_ - _“Search the EPD library for mineral wool insulation from Danish manufacturers”_ - _“What’s the GWP breakdown by life cycle stage for project X?”_ - _“Show me emissions over time for project X”_ - _"What are five promising mitigation actions to reduce environmental impacts in the structure of this project?_ ---
**Author:** ![kilianspeiser](https://dub1.discourse-cdn.com/flex005/user_avatar/community.realtimelca.com/kilianspeiser/32/938_2.png) [@kilianspeiser](https://community.realtimelca.com/u/kilianspeiser)\ **Post date:** [May 5, 2026, 9:18am UTC](https://community.realtimelca.com/t/introducing-the-rtlca-mcp-server-for-conversational-lca/454/2 "2026-05-05T09:18:47Z")
We updated the Post with instructions on how to connect to Codex. 1. Open Codex 2. Go to Settings → Configurations → Open config.toml 3. Go to Configurations 4. Open config.toml 5. Paste the following at the very top of the file mcp\_oauth\_callback\_port = 5555 [mcp\_servers.rtlca] url = “[https://mcp.realtimelca.com/mcp”](https://mcp.realtimelca.com/mcp%E2%80%9D) 6. Close Codex (Make sure the process is not running anymore) 7. Restart Codex 8. Go to Settings → MCP Servers 9. You should now be able to see the rtlca connection → Click Authenticate 10. A browser will pop up and you need to enter your RTLCA credentials 11. Return to Codex and test the RTLCA connection in a Chat, e.g. “What projects do I have in RTLCA?”