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
AsDecided
Overview
Description from the maker (original English)
Read-only access to deterministic engineering decisions stored in a local repository.
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.
You need
- DockerDocker installed
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": {
"core": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/asdecided/core:mcp-v0.31.2"
]
}
}
}Run this in your terminal
claude mcp add core -- docker run -i --rm ghcr.io/asdecided/core:mcp-v0.31.2Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"core": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/asdecided/core:mcp-v0.31.2"
]
}
}
}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": {
"core": {
"type": "stdio",
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/asdecided/core:mcp-v0.31.2"
]
}
}
}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 asdecided, 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 32410 servers in this category
- Published to the registry more recently than 56% of the other 32410 servers in this category
- Basic checks equal to or better than 100% of the other 32410 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 AsDecided 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 (0.31.2) reached the registry 32 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Docker on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, debuff
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
debuff
by debuffjp
Let coding agents play, test and tune your 2D web game: live state, explained errors, replays, fuzz.
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.
AsDecided
Engineering decisions your agents can follow. Build, as decided.
AsDecided keeps requirements, decisions, designs, roadmaps, and prompts as typed Markdown in your repository. Its native Rust engine validates that knowledge, retrieves relevant decisions deterministically, and serves it read-only to agents over MCP.
No embeddings, model call, hosted index, or Python runtime is required. The same repository state produces the same answer.
Product site · Documentation · Canonical sources · Changelog
Install
Install the native engine and MCP server through Homebrew:
brew install asdecided/tap/asdecided-coreRust users can install the decided CLI directly from crates.io:
cargo install decidedcargo install decided-mcp
cargo install compiles from source. To install the prebuilt release binaries instead, use cargo binstall. Crates published after v0.31.0 point it at the GitHub release archives:
cargo binstall decided decided-mcpWindows users can install both native executables through Scoop:
scoop bucket add asdecided https://github.com/asdecided/scoop-bucketscoop install asdecided
Native decided and decided-mcp archives are also published on GitHub Releases. The Linux archives (x86_64 and aarch64) need glibc 2.17 or newer, so they run on RHEL/CentOS 7 and later, Amazon Linux 2 and 2023, and current Debian and Ubuntu releases.
Python API consumers should use the asdecided/sdk client SDK. It talks to the native engine; this repository does not ship a second Python engine or a PyPI package.
Start a repository
decided quickstartdecided validate decisions/ decided gate decisions/ decided gate decisions/ --code --base origin/main
New repositories use:
.decided/config.yamldecisions/
Existing artifact IDs such as RAC-ABC123DEF456 are durable identities and do not change with the product name.
Federate corpora
Manifest version 2 composes several pinned, materialised parent corpora into one source-aware DAG while preserving every source, diamond route, override, and read-only boundary:
decided corpus status decisions/decided corpus explain organization/standards::ADR-01K000000001 decisions/
Federation is fully offline and forge-neutral: the engine consumes verified working-tree bytes, not GitHub APIs or a hosted index. See the federation guide and runnable multi-parent example.
Migrate an existing repository
Migration is explicit and never runs during an ordinary command:
decided migrate layout . --dry-rundecided migrate layout .
The migration moves .rac/ to .decided/ and rac/ to decisions/. It refuses to overwrite either destination.
MCP
The official MCP Registry identity is io.github.asdecided/core. Its Registry package is the versioned local MCP image under ghcr.io/asdecided/core; Homebrew and Cargo remain direct native installation paths for the same Rust server.
The OCI server still needs an explicit repository grant:
docker run --rm -i -v "$PWD:/work:ro" \ghcr.io/asdecided/core:mcp-latest --root /work
{"mcpServers": { "asdecided": { "command": "decided-mcp", "args": ["--root", "."] } } }
Architecture
Rust is the product engine and the only CLI/MCP runtime in this repository. The authoritative language-neutral compatibility fixtures live in asdecided-spec. Live-corpus validation is based on validity, determinism, freshness, and cache/no-cache equality.
Document ingestion remains an ancillary Python connector rather than part of the core engine. The retired Python engine is preserved for historical review at the immutable python-engine-final tag; it is not maintained or run in normal CI.
License
Apache-2.0. See LICENSE and NOTICE.
Governance and continuity
AsDecided core is solo-maintained and supported on a best-effort basis. The project does not depend on a hosted service: adopters keep their Markdown corpus in their own git repository, while the Apache-2.0 implementation and language-neutral specification remain public. See GOVERNANCE.md for the maintainer, release, support, and continuity posture.