Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Local spend caps, kill-switch blocking and Ed25519-signed receipts for AI agent tool calls.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
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, NETLIFYValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
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/mcpFill in the empty values before running it.
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.
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.
AGENTGUARD_MCP_DAILY_CAP_CENTS envAGENTGUARD_MCP_PER_CALL_CAP_CENTS envAGENTGUARD_MCP_TENANT envAGENTGUARD_HOME envAGENTGUARD_MCP_LEDGER envAGENTGUARD_MCP_DISABLE_COST_OVERRIDE envAGENTGUARD_LOCK_COST_OVERRIDES envAGENTGUARD_ACTOR_DIGEST envAGENTGUARD_LICENSE_ENDPOINT envAGENTGUARD_NO_BEACON envAGENTGUARD_TELEMETRY envAGENTGUARD_INSTALL_ID envAGENTGUARD_ANONYMOUS_INSTALL_ID envCI envGITHUB_ACTIONS envGITLAB_CI envCIRCLECI envBUILDKITE envVERCEL envNETLIFY envThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Runs on your computer; the tool list appears in your AI app after you install it.
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
The registry name was verified with the GitHub account MerchantGuard, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
You need to fill in: AGENTGUARD_LICENSE_KEY
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).
The GitHub repo last changed –, and the latest version (0.3.1) reached the registry 2 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, Zendesk
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Zendesk MCP Pack — tickets, users, organizations via OAuth.
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® 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.
{
"mcpServers": { "agentguard": { "command": "npx", "args": ["-y", "@agentguard-run/mcp"] } } }
Optional environment variables:
| Variable | Default | Meaning |
|---|---|---|
AGENTGUARD_MCP_DAILY_CAP_CENTS | 500 | Hard per-day spend cap (block on exceed) |
AGENTGUARD_MCP_PER_CALL_CAP_CENTS | 100 | Hard per-call spend cap (block on exceed) |
AGENTGUARD_MCP_TENANT | mcp-local | Tenant scope stamped into receipts |
AGENTGUARD_HOME | ~/.agentguard | Signing key and decision-ledger directory |
AGENTGUARD_MCP_LEDGER | ndjson | Persist signed decisions; memory restores process-only storage |
AGENTGUARD_MCP_DISABLE_COST_OVERRIDE | unset | 1 discards and prevents pricing overrides |
AGENTGUARD_ACTOR_DIGEST | unset | 1 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.
self-hosted: zero retention, your jurisdiction.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/
Any receipt can be checked off-platform at https://agentguard.run/verify or with verify_receipt and the signer public key from spend_status.
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.