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Last EHR — Medplum MCP Server

local only

Last EHR — Medplum runs on your own machine — the client starts it, so there is no endpoint to ping. 36 installs a week from npm. Last commit 6 Sep 2026.

FHIR chart tools for MCP: read-only by default, with elicitation-gated, human-approved writes.

Installs per day peak 20 · avg 6 · +129% w/w
a month agotoday
36
Installs / week
npm · @lastehr/mcp
4
Stars
13 open issues
6 Sep 2026
Last commit
0 releases in 90 days
Apache-2.0
License
TypeScript

What the code does

We read the source, 21 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Dumps the whole environment packages/conformance/src/harness.ts:127
        Object.entries(process.env).filter(

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add last-ehr -- npx -y @lastehr/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "last-ehr": {
      "args": [
        "-y",
        "@lastehr/mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.last-ehr]
command = "npx"
args = ["-y", "@lastehr/mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "last-ehr": {
      "args": [
        "-y",
        "@lastehr/mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "last-ehr": {
      "args": [
        "-y",
        "@lastehr/mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: MEDPLUM_ACCESS_TOKEN (FHIR chart tools over Medplum or a local HAPI stack: read-only by default, with an opt-in elicitation-gated write profile (human-approved per action).), MEDPLUM_CLIENT_ID (FHIR chart tools over Medplum or a local HAPI stack: read-only by default, with an opt-in elicitation-gated write profile (human-approved per action).), MEDPLUM_CLIENT_SECRET (FHIR chart tools over Medplum or a local HAPI stack: read-only by default, with an opt-in elicitation-gated write profile (human-approved per action).), MEDPLUM_BASE_URL (FHIR chart tools over Medplum or a local HAPI stack: read-only by default, with an opt-in elicitation-gated write profile (human-approved per action).). The author declared them in the registry entry; get the values from the project itself.

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Last EHR — Medplum — questions

Answers built from our own checks of this server.

Why is there no uptime for Last EHR — Medplum?
Last EHR — Medplum runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @lastehr/mcp was installed 36 times last week.
How do I connect Last EHR — Medplum?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @lastehr/mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Last EHR — Medplum?
The npm package @lastehr/mcp was installed 36 times in the last week. Week over week that is +129%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Last EHR — Medplum open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 4 stars on GitHub and 13 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.