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
Tkach Security
Overview
Description from the maker (original English)
Fail-closed MCP adapter for untrusted model output over a local Tkach runtime.
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
- You need to fill in: TKACH_BEARER_TOKEN
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:
TKACH_HTTP_ADDR,TKACH_BEARER_TOKEN
Values marked secret are keys to your account. Never share them or paste them into a chat.
The maker has not listed install details in the registry. See the maker’s README below.
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 ECD5A, 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 32415 servers in this category
- Published to the registry more recently than 45% of the other 32415 servers in this category
- Basic checks equal to or better than 100% of the other 32415 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 Tkach Security 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: TKACH_BEARER_TOKEN
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 (0.1.2) 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 Rust on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Safe Fetch
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
Install
Safe Fetch
by Sanoy24
MCP server for fetching URLs, safe against SSRF, DNS rebinding, and redirect-to-internal attacks.
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.
Русская версия
A fail-closed security boundary for AI agents and compromised model output.
The model proposes. Tkach authorizes.
Put Tkach between model proposals and protected actions. Its Rust Core checks authority and information flow before allowing an action or releasing output. Model output remains untrusted data, even when the model is compromised.
Why Tkach
- Explicit authority: protected actions need an exact-scope, Core-issued
Propusk; model text cannot create one. - Controlled data flow: permission to read is not permission to export. Provenance and release checks remain inside the boundary.
- Fail-closed decisions: invalid, denied, replayed, cancelled, or uncertain states do not silently become permission.
- Isolated secrets and bounded evidence: broker-held secrets stay outside ordinary model context;
Sledreceipts do not include payloads.
These guarantees apply to paths routed through Tkach. It does not make the model trustworthy, detect every prompt injection, or protect a compromised host.
Start in minutes
Install from crates.io with Rust 1.85 or newer:
cargo install tkach-cli --version 0.1.2 --lockedtkach init my-agent tkach check my-agent/.tkach/request.json tkach run --demo
init creates a starter request without overwriting files; check validates its schema, not permission to execute; run --demo exercises the offline boundary without a model connection. Use tkach ui for the interactive panel.
Prefer no Rust toolchain? Download a binary below and start with tkach init.
Packages and downloads · v0.1.2
| Channel | What you get | Install / next step |
|---|---|---|
| GitHub Releases | tkach + tkach-mcp; Linux x86_64, macOS x86_64/arm64, Windows x86_64 | Verify downloads |
| crates.io | Seven Rust crates at 0.1.2: Core, Gateway, HTTP, client, MCP, CLI, provider adapter | Package list |
| npm | Thin JavaScript / TypeScript HTTP client | npm install tkach-security-client@0.1.2 |
| PyPI | Thin Python HTTP client | python -m pip install tkach-security-client==0.1.2 |
| Official MCP Registry | io.github.ECD5A/tkach-security@0.1.2, local stdio | Configure MCP |
| GHCR | OCI image for Linux amd64 / arm64 | Digest and deployment |
Binary archives include SHA-256 manifests, keyless Sigstore bundles, and GitHub build attestations. Pin the OCI digest for deployment; verification details live in the distribution guide.
Integrate without moving policy out of Rust
Use the HTTP contract from your application, the Rust client, a Python/JS/TS/Go client, or the stdio adapter from an MCP client. Clients and MCP require a separately started local tkach serve runtime and its bearer token; installing a package does not enable background protection.
tkach-core stays provider-, protocol-, and language-independent. Adapters transport requests; policy and authority stay in Rust. Follow the integration guide or copy a working examples/ scenario. The Go client is a source module, not a separate registry package.
The supported runtime is loopback-only by default. Public internet serving, TLS termination, Streamable HTTP, a cloud control plane, and a generic executor are not included; see the deployment contract.
Show the cross-platform CLI window
See the boundary in action
From a repository checkout, run the offline Golden Case. It needs no model service or credentials. It performs one create-only write inside a temporary sandbox, then proves that a sibling path and a compromised provider proposal are denied:
cargo run -p tkach-gateway --example golden_case --lockedExpected result:
GOLDEN_CASE|safe_output=released|allowed_write=committed|out_of_scope=denied|compromised_action=denied|compromised_executor_calls=0The positive path uses trusted host configuration for the exact policy, destination, and executor binding; the provider supplies only an untrusted proposal. Read the architecture for the enforcement path and the release notes for the release checks and remaining limitations.
Documentation
- Use: integration guide, examples, distribution.
- Review: product contract, architecture, security model, threat model.
- Follow: changelog, roadmap. Report vulnerabilities through SECURITY.md.
Contributing
Keep changes small and explicit about the security boundary. Core changes need a demonstrated security or product defect; adapters must remain thin and must not duplicate Core logic. See CONTRIBUTING.md for required checks, public-claim rules, and files that must remain local.
Support
If Tkach Security is useful to your work, support its continued maintenance:
- TON:
pointoncurve.ton - Bitcoin (BTC):
1ECDSA1b4d5TcZHtqNpcxmY8pBH1GgHntN - USDT (TRC20):
TUF4vPdB6QkjCvZq18rBL4Qj4dK5ihCN75
Contact
For inquiries about Tkach Security, integrations, security research, or collaboration: