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Agent Core MCP server

by kinbinghua-lgtm·io.github.kinbinghua-lgtm/agent-core-mcp·v0.1.1
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Deterministic computation tools for AI agents. Zero dependencies, no network, read-only.

A85/100grade A
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Safety scan
A85/100

full report

Adoption
New

0 stars38 downloads/wk

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Agent Core tools (15)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • base_convert

    Convert an integer string between bases 2 and 36 with arbitrary precision. Uses big-integer parsing, so values

  • convert

    Convert a value between units of length, mass, time or data size. Cross-family conversions are rejected rather

  • date_add

    Offset an ISO-8601 date by days, weeks, months, years, hours, minutes or seconds. Negative amounts subtract.

  • date_calc

    Interval between two ISO-8601 dates in days, weeks, months, years, hours, minutes, seconds or businessDays

  • diff_text

    Compute an exact line-by-line diff between two texts using a longest-common-subsequence algorithm.

  • fuzzy_match

    Score every candidate string against a query using the Sorensen-Dice coefficient over character bigrams and

  • hash

    Compute a cryptographic hash of a UTF-8 string. Returns hex and base64 digests plus the UTF-8 byte length.

  • json_pick

    Resolve several paths against one JSON document in a single call. Cheaper than issuing many json_query calls

  • json_query

    Extract a value from a JSON document by path, e.g. "a.b[0].c" or "$.items[3].name".

  • json_validate

    Check whether a string is valid JSON. On failure returns the parser message plus the computed line and column

  • parse_table

    Parse delimited text into a header plus rows, handling quoted fields, escaped quotes, embedded delimiters and

  • regex_analyze

    Statically analyse a regular expression for catastrophic backtracking (ReDoS): nested quantifiers, overlapping

  • regex_extract

    Apply a regular expression and return every match with its index, numbered capture groups and named groups.

  • similarity

    Sorensen-Dice similarity of two strings, from 0 (no shared character bigrams) to 1 (identical). One deterministic comparison.

  • text_stats

    Exact text statistics: Unicode code points, UTF-8 bytes, lines, non-empty lines, words, sentences, paragraphs,

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

no findings
  • Code scan3 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 33 days ago12/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 85/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Agent Core compares

Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
85/100
higher than 73% of 4,461 AI and agents servers
Tools
15
the typical AI and agents server has 6
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
38
more than 28% of 1,554 AI and agents servers with a package

What its tools let an agent do: 15 read

Install Agent Core in Claude Code, Cursor or VS Code

Runs npx -y agent-core-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add agent-core-mcp -- npx -y agent-core-mcp
Add to Cursor

What the publisher says

From the Agent Core repository's README, as published. We do not edit it. Read it on GitHub

agent-core-mcp

Deterministic computation tools for AI agents. Exact diffing, hashing, JSON querying, calendar arithmetic, regex extraction under a hard execution deadline, CSV parsing, similarity scoring and unit/base conversion — as an MCP server.

Zero dependencies. No network. Read-only.

Why this exists

Language models are excellent at generating language and unreliable at exact, reproducible mechanical computation. That is not a capability gap — it is an architectural property. Asking a probabilistic system to count, diff, hash or do calendar math guarantees a certain rate of confident wrong answers.

This server moves those operations out of the model and into a deterministic engine.

The result is not a better guess. It is a different category of answer: one that is exact and reproducible.

There is a second reason, specific to the MCP ecosystem. The most-reported problems with published servers are credential exfiltration, undisclosed shell execution, dependency trees carrying known CVEs, and servers that hang the client. A server with no network, no credentials, no execution surface, and a bounding deadline on every operation cannot exhibit any of them.

Guarantees

The server publishes these as a machine-readable contract resource (agent-core://contract), so a client can verify what it is installing rather than trusting this file.

Install

npx agent-core-mcp

No install step is required to run it. Requires Node.js 18 or newer.

Available from:

  • npm — agent-core-mcp
  • Official MCP registry — io.github.kinbinghua-lgtm/agent-core-mcp
  • Source — github.com/kinbinghua-lgtm/agent-core-mcp

Configure

Claude Code

This repository ships a .mcp.json, so cloning it is enough:

git clone https://github.com/kinbinghua-lgtm/agent-core-mcp
cd agent-core-mcp
claude   # the agent-core server is discovered automatically

Or add it to any project:

{
  "mcpServers": {
    "agent-core": {
      "command": "npx",
      "args": ["-y", "agent-core-mcp"]
    }
  }
}

Claude Desktop, Cursor, VS Code, Windsurf, Continue, Zed

Same block, in that client's MCP configuration file. No API keys. No environment variables. Nothing to sign up for.

Tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Agent Core: common questions

Is Agent Core MCP server safe?
Yes, by our scan: it is graded A (85/100). Read the Agent Core safety report
How do I install Agent Core?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Agent Core need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Agent Core maintained?
The last commit was 55 days ago (2026-09-11). The latest release is v0.1.1.
What can I use instead of Agent Core?
Servers from other publishers that do the same job: Ts Core MCP server, DCC-MCP Core MCP server and mcptoon MCP server.
How does Agent Core compare with other AI and agents MCP servers?
safety score 85/100 (higher than 73% of 4,461 AI and agents servers); tools 15 (the typical AI and agents server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Agent Core

Same job from other publishers: the closest match first, then the best rated.

  • Ts Core
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  • DCC-MCP Core
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  • mcptoon
    MCP tools + agent skills in one zero-dependency CLI: 71,929 -> 581 tokens (-99.2%, measured).
    A