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
Agent Action Gate
Overview
Description from the maker (original English)
Gate/Prove: deny unattended destructive agent tools. Instant Audit $499 on a2zsoc.com.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
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
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).
- The registry lists no key to fill in.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
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.
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.
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 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account AAH20, 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 32497 servers in this category
- Published to the registry more recently than 24% of the other 32497 servers in this category
- Basic checks equal to or better than 100% of the other 32497 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 Agent Action Gate 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?
The registry does not list a required key, though some servers ask you to sign in on first use.
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 (0.2.0) reached the registry 3 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Zoo MCP
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
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 yesterday
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Zoo MCP
by KittyCAD
An MCP server that provides access to the Zoo API for various CAD operations and tools.
Runs on your computerUpdated 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.
Agent Action Gate
Gate/Prove runtime for agent and MCP tool calls.
Normalize tool intent → deny unknown → never treat model confidence as approval → HITL prove on destructive / provision / decommission → Action Ledger (hash chain).
Extracted from GRC_Claw @grc-claw/agent-policy-firewall. This repo is the sharp foundry slice: one command, no cathedral.
Commercial (how this is sold): $499 Instant Audit and consultation on a2zsoc.com.
Why this exists (revenue + cost)
AI-agent companies do not pay for “another MCP.” They pay to stop unattended destructive tools and to prove Gate/Prove gaps before SOC 2 Type I, PE diligence, or insurance renewal.
| Cost driver | What this gate does | Buyer outcome |
|---|---|---|
Ungated shell.exec / disable-control / decommission | DENY unless HITL prove token + approved | Avoid production blast |
| Agent “95% sure” | never_equate_intent_to_approval: true | Intent ≠ ledger proof |
| Write tools fire on first thought | Default SIMULATE (no side effects) | FDE minutes, not incident cost |
| No audit trail | Append-only Action Ledger with hash chain | Diligence packet |
Hard rule: never equate agent intent or model score to human approval.
Illustrative cost sketch (not a quote): make bench.
Quick start
make demoPYTHONPATH=. python3 -m aag demoPYTHONPATH=. python3 -m aag check fixtures/t1059_unattended_shell.json PYTHONPATH=. python3 -m aag bench
Unattended high-tier calls DENY even at 0.99 confidence. ALLOW needs AAG_PROVE_TOKEN (or --prove-token) and approved: true.
export AAG_PROVE_TOKEN='replace-me'PYTHONPATH=. python3 -m aag check fixtures/proved_decommission.json --prove-token "$AAG_PROVE_TOKEN"
Kill-switch: AAG_KILL_SWITCH=1 or touch artifacts/KILL.
MCP stdio server
This process never executes tools. Clients call gate_check before they would invoke a destructive tool.
PYTHONPATH=. python3 -m aag serveCursor / Claude example (mcpServers):
{"agent-action-gate": { "command": "python3", "args": ["-m", "aag", "serve"], "cwd": "/path/to/agent-action-gate", "env": { "PYTHONPATH": ".", "AAG_PROVE_TOKEN": "replace-me" } } }
Docker / registry image:
docker run --rm -i ghcr.io/aah20/agent-action-gate:0.2.0Official MCP Registry name: io.github.AAH20/agent-action-gate
Envelope
Every decision includes:
never_equate_intent_to_approval: trueallow_auto_execute(false on unattended high tiers)mode:deny|simulate|allowledger_id/receipt_hash- CTAs: Instant Audit + consultation
Library mapper
Same Gate/Prove policy from Python without the stdio loop:
from aag.gate import AgentActionGatefrom aag.mcp import evaluate_mcp_call
gate = AgentActionGate(prove_token="replace-me") evaluate_mcp_call(gate, {"params": {"name": "shell.exec", "arguments": {"note": "no payload"}}})
Fixtures (labeled, not payloads)
| File | Technique | Expected |
|---|---|---|
t1059_unattended_shell.json | T1059 | DENY unattended destructive |
t1078_read_identity.json | T1078 | ALLOW read |
t1562_impair_defenses.json | T1562 | DENY unattended destructive |
write_ticket_simulate.json | — | SIMULATE write |
proved_decommission.json | T1578 | ALLOW only with HITL token |
Layout
aag/gate.py HITL + kill-switch + unknown deny ledger.py hash-chained JSONL server.py MCP stdio (gate_check, ledger_verify) mcp.py MCP tools/call mapper (no execution) cost.py illustrative avoidance sketch demo.py fixture runner fixtures/ ATT&CK-tagged cases server.json MCP Registry metadata tests/ Gate/Prove + MCP contract
Paid evaluation (not free prove)
If you deploy agents or MCP servers and need a Gate/Prove read before SOC 2, PE diligence, or insurance:
→ [$499 Instant Audit](https://a2zsoc.com/productized-services#instant-audit-tripwire) → [consultation](https://a2zsoc.com/consultation) (sprint / vCISO)
Unpaid take-homes: refuse — run make demo and buy Instant Audit.
License
MIT