Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

AgentGuard

by MerchantGuardversion 0.3.1i★ –iRuns on your computer
Registry nameio.github.MerchantGuard/agentguard

Install

Overview

Description from the maker (original English)

Local spend caps, kill-switch blocking and Ed25519-signed receipts for AI agent tool calls.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Other
  • You need to fill in: AGENTGUARD_LICENSE_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: AGENTGUARD_MCP_DAILY_CAP_CENTS, AGENTGUARD_MCP_PER_CALL_CAP_CENTS, AGENTGUARD_MCP_TENANT, AGENTGUARD_HOME, AGENTGUARD_MCP_LEDGER, AGENTGUARD_MCP_DISABLE_COST_OVERRIDE, AGENTGUARD_LOCK_COST_OVERRIDES, AGENTGUARD_ACTOR_DIGEST, AGENTGUARD_LICENSE_KEY, AGENTGUARD_LICENSE_ENDPOINT, AGENTGUARD_NO_BEACON, AGENTGUARD_TELEMETRY, AGENTGUARD_INSTALL_ID, AGENTGUARD_ANONYMOUS_INSTALL_ID, CI, GITHUB_ACTIONS, GITLAB_CI, CIRCLECI, BUILDKITE, VERCEL, NETLIFY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "agentguard": {
      "command": "npx",
      "args": [
        "-y",
        "@agentguard-run/mcp"
      ],
      "env": {
        "AGENTGUARD_MCP_DAILY_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_PER_CALL_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_TENANT": "your-value",
        "AGENTGUARD_HOME": "your-value",
        "AGENTGUARD_MCP_LEDGER": "your-value",
        "AGENTGUARD_MCP_DISABLE_COST_OVERRIDE": "your-value",
        "AGENTGUARD_LOCK_COST_OVERRIDES": "your-value",
        "AGENTGUARD_ACTOR_DIGEST": "your-value",
        "AGENTGUARD_LICENSE_KEY": "your-value",
        "AGENTGUARD_LICENSE_ENDPOINT": "your-value",
        "AGENTGUARD_NO_BEACON": "your-value",
        "AGENTGUARD_TELEMETRY": "your-value",
        "AGENTGUARD_INSTALL_ID": "your-value",
        "AGENTGUARD_ANONYMOUS_INSTALL_ID": "your-value",
        "CI": "your-value",
        "GITHUB_ACTIONS": "your-value",
        "GITLAB_CI": "your-value",
        "CIRCLECI": "your-value",
        "BUILDKITE": "your-value",
        "VERCEL": "your-value",
        "NETLIFY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add agentguard --env AGENTGUARD_MCP_DAILY_CAP_CENTS=your-value --env AGENTGUARD_MCP_PER_CALL_CAP_CENTS=your-value --env AGENTGUARD_MCP_TENANT=your-value --env AGENTGUARD_HOME=your-value --env AGENTGUARD_MCP_LEDGER=your-value --env AGENTGUARD_MCP_DISABLE_COST_OVERRIDE=your-value --env AGENTGUARD_LOCK_COST_OVERRIDES=your-value --env AGENTGUARD_ACTOR_DIGEST=your-value --env AGENTGUARD_LICENSE_KEY=your-value --env AGENTGUARD_LICENSE_ENDPOINT=your-value --env AGENTGUARD_NO_BEACON=your-value --env AGENTGUARD_TELEMETRY=your-value --env AGENTGUARD_INSTALL_ID=your-value --env AGENTGUARD_ANONYMOUS_INSTALL_ID=your-value --env CI=your-value --env GITHUB_ACTIONS=your-value --env GITLAB_CI=your-value --env CIRCLECI=your-value --env BUILDKITE=your-value --env VERCEL=your-value --env NETLIFY=your-value -- npx -y @agentguard-run/mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "agentguard": {
      "command": "npx",
      "args": [
        "-y",
        "@agentguard-run/mcp"
      ],
      "env": {
        "AGENTGUARD_MCP_DAILY_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_PER_CALL_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_TENANT": "your-value",
        "AGENTGUARD_HOME": "your-value",
        "AGENTGUARD_MCP_LEDGER": "your-value",
        "AGENTGUARD_MCP_DISABLE_COST_OVERRIDE": "your-value",
        "AGENTGUARD_LOCK_COST_OVERRIDES": "your-value",
        "AGENTGUARD_ACTOR_DIGEST": "your-value",
        "AGENTGUARD_LICENSE_KEY": "your-value",
        "AGENTGUARD_LICENSE_ENDPOINT": "your-value",
        "AGENTGUARD_NO_BEACON": "your-value",
        "AGENTGUARD_TELEMETRY": "your-value",
        "AGENTGUARD_INSTALL_ID": "your-value",
        "AGENTGUARD_ANONYMOUS_INSTALL_ID": "your-value",
        "CI": "your-value",
        "GITHUB_ACTIONS": "your-value",
        "GITLAB_CI": "your-value",
        "CIRCLECI": "your-value",
        "BUILDKITE": "your-value",
        "VERCEL": "your-value",
        "NETLIFY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "agentguard": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@agentguard-run/mcp"
      ],
      "env": {
        "AGENTGUARD_MCP_DAILY_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_PER_CALL_CAP_CENTS": "your-value",
        "AGENTGUARD_MCP_TENANT": "your-value",
        "AGENTGUARD_HOME": "your-value",
        "AGENTGUARD_MCP_LEDGER": "your-value",
        "AGENTGUARD_MCP_DISABLE_COST_OVERRIDE": "your-value",
        "AGENTGUARD_LOCK_COST_OVERRIDES": "your-value",
        "AGENTGUARD_ACTOR_DIGEST": "your-value",
        "AGENTGUARD_LICENSE_KEY": "your-value",
        "AGENTGUARD_LICENSE_ENDPOINT": "your-value",
        "AGENTGUARD_NO_BEACON": "your-value",
        "AGENTGUARD_TELEMETRY": "your-value",
        "AGENTGUARD_INSTALL_ID": "your-value",
        "AGENTGUARD_ANONYMOUS_INSTALL_ID": "your-value",
        "CI": "your-value",
        "GITHUB_ACTIONS": "your-value",
        "GITLAB_CI": "your-value",
        "CIRCLECI": "your-value",
        "BUILDKITE": "your-value",
        "VERCEL": "your-value",
        "NETLIFY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • AGENTGUARD_MCP_DAILY_CAP_CENTS env
    Local daily spend cap in cents. A nonnegative integer.
  • AGENTGUARD_MCP_PER_CALL_CAP_CENTS env
    Local per-call spend cap in cents. A nonnegative integer.
  • AGENTGUARD_MCP_TENANT env
    Tenant identifier stamped into local receipts.
  • AGENTGUARD_HOME env
    Local signing-key, configuration and ledger directory. Defaults to .agentguard in the operating system home directory.
  • AGENTGUARD_MCP_LEDGER env
    Local decision storage. ndjson persists receipts across restarts; memory retains this process only.
  • AGENTGUARD_MCP_DISABLE_COST_OVERRIDE env
    Set to 1 to discard and prevent model pricing overrides for this server.
  • AGENTGUARD_LOCK_COST_OVERRIDES env
    Spend SDK startup lock. Set to 1 to prevent model pricing overrides.
  • AGENTGUARD_ACTOR_DIGEST env
    Set to 1 to hash actor identifiers before they enter local receipts.
  • AGENTGUARD_LICENSE_KEY secret env
    Optional AgentGuard license key for license validation and seat registration. Otherwise read from local configuration.
  • AGENTGUARD_LICENSE_ENDPOINT env
    License and seat service base URL. No prompts, tool content or receipts are sent.
  • AGENTGUARD_NO_BEACON env
    Set to 1 to disable optional activation telemetry regardless of saved consent.
  • AGENTGUARD_TELEMETRY env
    Set to 1 to opt in to content-free activation telemetry. Otherwise saved consent applies, default off.
  • AGENTGUARD_INSTALL_ID env
    Optional identifier used only by opted-in activation telemetry when no saved install identifier exists.
  • AGENTGUARD_ANONYMOUS_INSTALL_ID env
    Legacy fallback for AGENTGUARD_INSTALL_ID in opted-in activation telemetry.
  • CI env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • GITHUB_ACTIONS env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • GITLAB_CI env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • CIRCLECI env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • BUILDKITE env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • VERCEL env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.
  • NETLIFY env
    Existing runtime marker. A nonempty value marks opted-in activation telemetry as CI; it does not enable telemetry.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account MerchantGuard, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

  • More stars than 0% of the other 32599 servers in this category
  • Published to the registry more recently than 46% of the other 32599 servers in this category
  • Basic checks equal to or better than 100% of the other 32599 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is AgentGuard safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: AGENTGUARD_LICENSE_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.1) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Zendesk

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago
Install

Zendesk

by pipeworx-io

Zendesk MCP Pack — tickets, users, organizations via OAuth.

Computer or cloudUpdated today
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@agentguard-run/mcp

AgentGuard® as an MCP server: local spend caps and Ed25519-signed provenance receipts for AI agent actions, usable from any Model Context Protocol host (Claude Desktop, Claude Code, Cursor, Cline, or your own agent runtime).

Zero data plane. Tools accept metadata only: model names, token counts, endpoint URLs. Prompts and completions never pass through this server, and their content stays on your machine. Receipts are content-free.

A configured license uses the license and seat service. Optional activation telemetry requires consent and can be disabled with AGENTGUARD_NO_BEACON=1. Neither path sends prompts, tool content or receipts.

Install

{

"mcpServers": { "agentguard": { "command": "npx", "args": ["-y", "@agentguard-run/mcp"] } } }

Optional environment variables:

VariableDefaultMeaning
AGENTGUARD_MCP_DAILY_CAP_CENTS500Hard per-day spend cap (block on exceed)
AGENTGUARD_MCP_PER_CALL_CAP_CENTS100Hard per-call spend cap (block on exceed)
AGENTGUARD_MCP_TENANTmcp-localTenant scope stamped into receipts
AGENTGUARD_HOME~/.agentguardSigning key and decision-ledger directory
AGENTGUARD_MCP_LEDGERndjsonPersist signed decisions; memory restores process-only storage
AGENTGUARD_MCP_DISABLE_COST_OVERRIDEunset1 discards and prevents pricing overrides
AGENTGUARD_ACTOR_DIGESTunset1 stores SHA-256 digests of actor IDs; provider stays readable

A signing keypair is generated on first run and persisted to /mcp-signing.json (0600). Signed decisions are appended to / /decisions.ndjson, including the public verification key. Exports include prior process runs and new decisions extend the existing chain. Tenant directory names use the spend store's filename normalization. Spend counters remain process-local, as in earlier versions.

All tools accept optional agent_id, task_id, and workflow_id identifier parameters. spend_decide passes these to the call context, signing them as actor.agentId, actor.taskId, and actor.workflowId; the configured tenant becomes actor.tenantId. Other tools accept these metadata fields without recording a spend decision. Prompts, arbitrary content, credentials, and filesystem paths are rejected as IDs. Existing calls without these parameters keep working.

Tools

  • `spend_decide`: gate a model call before it runs. Returns allow/block plus a signed, hash-chained receipt recording model identity, weights origin country (China-origin families such as GLM, DeepSeek, Qwen, and Kimi are flagged automatically), hosting jurisdiction, and retention posture. Unrecognized endpoints (vLLM, Ollama, TGI, your own cluster) route as self-hosted: zero retention, your jurisdiction.
  • `verify_receipt`: independently verify any receipt. Change one signed byte and verification fails.
  • `export_receipts`: export the tenant decision ledger as a verified hash chain, including earlier process runs. Memory mode exports only the current process.
  • `set_model_cost`: register pricing for self-hosted models (AgentGuard fails closed on unknown costs).
  • `provenance_preview`: see what would be attested for a model/endpoint without spending.
  • `spend_status`: active caps, tenant, decision count, signer fingerprint.

Why

When agents move from hosted APIs to self-hosted models, the provider's spend dashboard, rate limits, and audit logs disappear with the provider. AgentGuard puts them back, locally, and adds something hosted providers never gave you: a cryptographic receipt an outsider can verify without trusting you or us.

More: https://agentguard.run/sovereign/ and https://agentguard.run/sovereign/guide/

Verify independently

Any receipt can be checked off-platform at https://agentguard.run/verify or with verify_receipt and the signer public key from spend_status.

Local release verification

Requires Node.js 20.19 or later. Run npm ci, npm test, and npm run scan:release from this package or its public mirror. The lockfile uses the published spend 0.19.0 package; no private sibling checkout is required.

Release checklist: keep package.json, the server version in src/index.ts, and both versions in server.json aligned; run the tests and release scan; publish npm first, publish with mcp-publisher, then verify the registry's active entry. See the registry release guide for exact commands and the public mirror allowlist.

The official registry name is io.github.MerchantGuard/agentguard. Its package entry runs @agentguard-run/mcp locally through npx and stdio.

AgentGuard® is a registered trademark of Dunecrest Ventures Inc. US patent filings pending. This package is governance software, not legal or compliance advice.

Ask PopNx