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
CompatLab
Overview
Description from the maker (original English)
Read recorded npm loading evidence across pinned Node.js, Bun and Deno runtimes.
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 in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://compatlab.me/mcpRun this in your terminal
claude mcp add --transport http compatlab https://compatlab.me/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"compatlab": {
"url": "https://compatlab.me/mcp"
}
}
}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.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"compatlab": {
"type": "http",
"url": "https://compatlab.me/mcp"
}
}
}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.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://compatlab.me/mcpMenu names can differ slightly by plan and over time.
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
We have not read this server’s tool list yet; we check endpoints in rotation.
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 siddiksawani, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 32744 servers in this category
- Published to the registry more recently than 58% of the other 32744 servers in this category
- Basic checks equal to or better than 100% of the other 32744 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 CompatLab 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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 29 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Date Math
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 2 days ago
Install
Date Math
by JowenDelaPena
Exact date/time math for agents: business days, holidays, time zones, cron, RRULE, SLA. x402 paid.
Runs in the 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.
CompatLab
CompatLab tests published npm artifacts across pinned JavaScript runtimes. Reports distinguish observed loading behavior, coverage, and environment limits from broader claims of compatibility.
Production domain: compatlab.me. Read the methodology before interpreting a passing report.
Agents can read existing evidence through the anonymous API or connect a remote MCP client to https://compatlab.me/mcp using Streamable HTTP. The read-only check_package and get_report tools return exact versions, runtime pins, coverage and report links; they never submit scans. See MCP setup and validation. Missing evidence is not a compatibility verdict.
The local engine resolves and prepares public npm artifacts with scripts disabled, seals their dependency tree, and probes them across pinned Node, Bun, and Deno runtimes. The CLI supports bounded checks and explicit snapshot reuse or lock-based rebuilds. The worker includes host ownership, capacity reservations, recovery and hostile-code qualification. The PostgreSQL catalog and private control service provide transactional admission, durable leases, authenticated result ingestion and snapshot-local dispatch. The anonymous website supports discovery, explicit scan requests, durable progress, report matrices, evidence and reproduction downloads. SSH operator controls, deployment packaging, encrypted off-host backups, retention and release-qualification gates are included; public admission defaults to disabled. See the operations runbook and qualification record. See website setup, reports, orchestration, catalog and admission, worker lifecycle, local execution, preparation, and runtime profiles for limits and prerequisites.
Development
Named assertions and CI artifacts extend the maintainer workflow. Assertions use commit-pinned offline fixtures and separate behavioral evidence. The Linux/runsc CLI can check a pre-publication archive with a distinct source identity and caller-supplied provenance.
The public maintainer section is coming soon. Its optional account implementation uses GitHub App login, encrypted OAuth tokens, live repository authority checks, revocation and account quotas, but sign-in and release monitoring stay disabled in this deployment. Public reports remain anonymous.
Use Node.js 24.21.0 from .node-version and pnpm 12.8.1 from package.json. The infrastructure tests included in pnpm check also require Python 3.12 or newer, available as python3 on your PATH. On macOS, check python3 --version: Apple's bundled Python 3.9 lacks the hashing and archive-filter APIs used by those tests. Install a supported Python separately; keep the system Python unchanged.
python3 --versioncorepack enable pnpm install --frozen-lockfile pnpm check pnpm cli --help pnpm cli doctor --json
pnpm check runs formatting/lint checks, a strict workspace build, test type checking, and unit/CLI and Python infrastructure tests. Build before running the CLI or tests directly. Development checks work on macOS and Linux; a Docker daemon is needed for doctor, sandbox tests and the local PostgreSQL test server. See database qualification for the separate integration gate.
doctor reports whether a Linux amd64 Docker server has a registered runsc runtime. It returns exit code 1 when prerequisites are missing and never executes package code. Passing it does not qualify a host for untrusted execution. There is no fallback to running packages on the developer's machine.
On a prepared Linux amd64 host with runsc:
pnpm buildpnpm test:sandbox
The smoke test builds a digest-pinned fixture image and checks ESM/CommonJS completion, module failure, fake stdout success, missing results, and abnormal exit. It uses authored fixtures only. CI installs a checksum-pinned gVisor release on a disposable GitHub-hosted runner; that installer is not for development or production machines.
Repository structure
| Path | Implemented responsibility |
|---|---|
apps/cli | Prerequisites, checks, CI archives, reproduction, SSH administration and backup encryption |
apps/web | Anonymous discovery, scan requests, durable progress and report pages |
packages/engine | Registry resolution, analysis, planning and bounded probe orchestration |
packages/catalog | PostgreSQL identities, admission, leases, result validation, recovery and cache lookup |
packages/contracts | Canonical vocabulary and bounded completion validation |
services/worker | Preparation, sealed storage, runtime supervision and local evidence storage |
services/control | Private WireGuard-bound worker API and reconciliation |
harnesses | Automatic loading and separate named assertion completion protocols |
services/maintainer | Release reconciliation, comparison and independently retried email |
runtime-images | Digest-pinned minimal runtime image recipe |
fixtures | Authored module/protocol and preparation archive fixtures |
infra | Pinned service packaging, worker provisioning, backup and recovery configuration |
scripts | Containment, corpus, deployment and recovery qualification |
docs | Architecture, delivery sequence, research, and decision records |
Delivery and contribution
The fourteen-PR delivery plan covers the public MVP and gated maintainer workflows. The architecture plan, PRD v1.1, and research notes define the design. The original PRD is preserved as historical reference.
All project changes use feature branches and pull requests. See CONTRIBUTING.md for checks and review expectations, and SECURITY.md for reporting security issues. The repository is maintained by siddiksawani and licensed under MIT.
For operating the public site, see production operations and search discovery. The deferred maintainer release-monitoring workflow is described in monitoring and deployment.