mcpbeat Sign in

Agent Core MCP Server

by kinbinghua-lgtm Your server? Claim it
local only

Agent Core runs on your own machine — the client starts it, so there is no endpoint to ping. 43 installs a week from npm. Last commit 11 Sep 2026.

Deterministic computation tools for AI agents. Zero dependencies, no network, read-only.

Installs per day peak 281 · avg 15 · +9% w/w
a month agotoday
43
Installs / week
npm · agent-core-mcp
0
Stars
0 open issues
11 Sep 2026
Last commit
2 releases in 90 days
MIT
License
JavaScript

What the code does

We read the source, 4 d ago · rules 995398eba69f

Evidence

Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.

Claims read-only, but the code runs commands redos-measure.cjs:44
    const child = spawn(process.execPath, ['-e', CHILD_SRC, String(n), PATTERN], {
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.

Runs an external command redos-measure.cjs:44
    const child = spawn(process.execPath, ['-e', CHILD_SRC, String(n), PATTERN], {
Builds a file path from a variable validate-server-json.cjs:154
  must(fs.existsSync(path.join(__dirname, bin)), `bin target ${bin} not found`);

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

We found things in this code

Code changes quietly between releases, and nobody reads the diff of a dependency. We do, on every release — watch Agent Core and you get told the day something new turns up.

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 agent-core-mcp -- npx -y agent-core-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "agent-core-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agent-core-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.agent-core-mcp]
command = "npx"
args = ["-y", "agent-core-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "agent-core-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agent-core-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "agent-core-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "agent-core-mcp"
      ]
    }
  }
}

Alternatives to Agent Core

same job, measured the same way
adrkit decision memory
by adrkit

Deterministic, offline, read-only ADR decision memory for coding agents. No model or network calls.

905 installs/wk local only
A
Agent Revenue Network
by workers-nadirventurelabs-agent-revenue-network

Paid deterministic data-quality and execution-verification tools for AI agents.

17 tools answering
Agent Readiness
by alipajand

Deterministic, read-only audits of repo readiness for AI coding agents and of agent context files.

72 installs/wk local only
Recon Kit MCP
by nan786521

Read-only network & security recon tools (DNS, TLS, headers, CORS) for AI agents, each graded.

106 installs/wk local only
Lens MCP
by segentic-lab

Deterministic navigation maps over code + markdown + Prisma for AI agents: 13 MCP tools

local only
Hexadata Tools
by 4robot

15 deterministic validation tools for AI agents: tax IDs (15 countries), VAT, IBAN, LEI, HS codes.

answering
Agentstack MCP
by inity13

Deterministic reasoning stack for AI agents: simulate, decide & compute, plus cross-domain tools.

36 installs/wk 24 tools answering
MCP Dependency Doctor
by petrovicistefan

Read-only npm dependency diagnostics for AI coding agents.

92 installs/wk local only

Agent Core — questions

Answers built from our own checks of this server.

Why is there no uptime for Agent Core?
Agent Core 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 agent-core-mcp was installed 43 times last week.
How do I connect Agent Core?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls agent-core-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Agent Core?
The npm package agent-core-mcp was installed 43 times in the last week. Week over week that is +9%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Agent Core open source?
Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.