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 Interop Runtime
Overview
Description from the maker (original English)
Coordinate coding agents through a local MCP server while keeping accounts and workspaces separate.
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
- npmNode.js installed (for the npx command)
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": {
"agent-interop-runtime": {
"command": "npx",
"args": [
"-y",
"agent-interop-runtime"
]
}
}
}Run this in your terminal
claude mcp add agent-interop-runtime -- npx -y agent-interop-runtimeOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"agent-interop-runtime": {
"command": "npx",
"args": [
"-y",
"agent-interop-runtime"
]
}
}
}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": {
"agent-interop-runtime": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"agent-interop-runtime"
]
}
}
}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 Praket7, 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 32476 servers in this category
- Published to the registry more recently than 94% of the other 32476 servers in this category
- Basic checks equal to or better than 100% of the other 32476 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 Interop Runtime 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 (1.1.0) reached the registry 2 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, zanadir
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
zanadir
by MustacheCase
Find what a repository's CI is missing, and which security checks cannot fail the build.
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 Interop Runtime
Your coding agents already know how to work, and Agent Interop Runtime helps them share a task while each one keeps its own identity, account, and working environment.
Connect a local MCP client to the runtime, and it will find the coding agents installed on your computer so you can choose a session, send it work, follow its progress, and pass a result to another session. Each provider still uses its own account, permissions, history, and project access, so the runtime coordinates the work without merging separate environments.
Think of it as a traffic desk for coding agents, because it shows which session received a task, records the updates that provider sends back, and keeps the result of each check in one place without turning separate conversations into a shared chat.
Watch the short illustrated tour
These pictures are illustrations, so they explain the workflow and available measurements but do not show a live provider session.
What happens when you send work
The runtime sends your message to the provider session you selected, and the receipt may confirm that the provider accepted it; however, acceptance only confirms delivery to the provider and does not mean the agent finished the task. The runtime reports completion only after it observes a result from that session.
The same rule applies when delivery is uncertain, because a network failure may happen after the provider accepted your message but before the runtime received confirmation. In that case the runtime marks delivery as unknown and does not silently send the prompt again, which avoids repeating work that may already be underway.
What it can do
Find supported provider sessions on your computer, so you can see which local tools are available before choosing where to send work.
Create or resume sessions when the selected provider supports those actions, and use the provider report to check which controls are available in your setup.
Send work, request cancellation, read progress, and collect a provider diff when the selected provider supports those features.
Keep shared work notes, handoffs, evidence, reviews, and cooperative resource claims so participating sessions can coordinate around the same task.
Run local checks inside a named workspace when you explicitly enable verification, and review the configured programs before trusting them with a project.
Read small text files inside an approved project folder, while common credential files are blocked, credential shaped text is redacted, and binary files are refused.
Provider features differ, so the doctor report shows what each installed provider can do; finding a provider alone does not confirm its sign in status or whether it is ready to accept work.
What it does not do
It does not merge provider accounts or histories, and each session remains subject to its provider's own settings.
It does not bypass a login, consent prompt, or permission request, so you must complete those steps through the provider itself.
It does not give an agent access to a provider that is not installed on the computer running the runtime, nor does it replace that provider's own application.
It does not sandbox commands, because verification runs the programs you configure with the access available to your account, so use it only with work and commands you trust.
Resource claims coordinate agents that use this runtime, but they cannot stop another program from editing the same files outside the runtime.
Providers
Freebuff Desktop uses its local app connection, and writes require a current launch check before work is sent; Freebuff CLI instead uses a managed terminal session.
OpenCode uses its local server, which the runtime may start on loopback when needed, and requests that may change work are never replayed after an uncertain network result. Each session remains tied to the server that exposed it, so switching servers does not silently redirect existing work.
Codex uses the Codex app server, while Claude Code and Cursor use their supported Agent Client Protocol commands.
The available features depend on the provider version, local setup, and account state, and most protocol checks use simulated providers rather than live sessions. Check the provider on the computer that will run the MCP server before relying on it for live work.
MCP protocol support
The server supports the 2026-07-28 MCP protocol and the earlier 2025-11-25 protocol, so newer clients can negotiate the per-request protocol while existing clients keep their session-based connection. This works over stdio and Streamable HTTP, and both versions receive the same selected tools and provider behavior.
Choose the tools your client sees
The runtime starts with a focused set of nine tools, so a new MCP connection can find providers, inspect and control sessions, read events, and cancel or resume work without loading the larger coordination catalog. You can choose a larger set when your work needs shared conversations, evidence, handoffs, or Freebuff specific controls, and you can keep the original 0.3.x names while migrating an existing client.
| Profile | Tools | Use it when |
|---|---|---|
minimal | 9 | You want the recommended starting set for provider sessions. |
core | 30 | You also need shared conversations, work records, handoffs, reviews, evidence, and claims. |
freebuff | 16 | You mainly work with Freebuff projects and threads. |
full | 49 | You need the modern names for every supported feature. |
legacy | 52 | An existing MCP client still calls the original 0.3.x tool names. |
The modern profiles use predictable verb first names, and related progress operations have been combined so one tool can read a snapshot or wait for updates. The legacy profile preserves the previous names during migration, while the migration guide maps each older tool to its new name or replacement.
Choose a profile on the server command, or set INTEROP_TOOLS_PROFILE when your client configuration cannot pass an argument.
npx -y agent-interop-runtime@1.1.0 serve --profile minimalnpx -y agent-interop-runtime@1.1.0 serve --profile core npx -y agent-interop-runtime@1.1.0 serve --profile freebuff npx -y agent-interop-runtime@1.1.0 serve --profile full npx -y agent-interop-runtime@1.1.0 serve --profile legacy
Read only mode removes tools that change provider or coordination state, and it can be enabled by setting INTEROP_READ_ONLY=1 in the server environment.
Install
Use Node 20 through Node 26, and install the current major release with npm or pnpm before checking which providers are available.
npm install --global agent-interop-runtime@1agent-interop-runtime doctor
You can also use the source checkout when you are changing the project, and its build runs the same TypeScript compiler used by the release workflow.
git clone https://github.com/Praket7/agent-interop-runtime.gitcd agent-interop-runtime pnpm install pnpm build node dist/src/cli.js doctor
Connect a local MCP client
The runtime talks to provider apps and tools installed on the same computer, so the recommended connection is a local MCP server over standard input and output. Start with the setup command for your client, and restart or reload that client after changing its configuration.
Codex
The installer adds or repairs the local Codex entry, backs up the existing configuration before changing it, and preserves unrelated settings.
npx -y agent-interop-runtime@1.1.0 install --writeCursor
The Cursor installer writes a project independent entry in your user configuration, and --project can be added when you want the connection only in the current project.
npx -y agent-interop-runtime@1.1.0 cursor-setup --writeClaude Code
Claude Code can launch the local server directly, and the command below starts with the recommended nine tools.
claude mcp add --transport stdio agent-interop-runtime -- npx -y agent-interop-runtime@1 serve --profile minimalOpenCode
Add the following entry to your OpenCode configuration, and the local process will expose the same focused tool set.
{"$schema": "https://opencode.ai/config.json", "mcp": { "agent-interop-runtime": { "type": "local", "command": ["npx", "-y", "agent-interop-runtime@1", "serve", "--profile", "minimal"], "enabled": true } } }
Other MCP clients can launch the same serve command through their local server configuration, and the provider applications must be available on the computer running the runtime. HTTP mode can support a deliberate remote setup, but it needs authentication and network protection because session identifiers do not replace access control.
Current evidence
Automated tests and offline benchmarks check the tool behavior with simulated providers, and those results do not contact live agents, measure speed, or estimate provider cost. GitHub CI checks three operating systems against four supported Node versions, for twelve combinations.
Earlier local checks observed a response from Freebuff GLM 5.3 Flash, and OpenCode Big Pickle accepted a prompt, although completion was not observed in that session. Those observations apply only to the specific sessions tested, so they do not establish general provider support.
Run checks
pnpm typecheckpnpm test pnpm lint pnpm mcp:validate pnpm schema:check pnpm bench:check pnpm audit --prod --audit-level=high npm audit --prefix media/remotion --audit-level=high pnpm pack:check
Read the provider guide, the plain language architecture guide, the compatibility notes, the 1.0 migration guide, and troubleshooting for setup and behavior details.
Safety and privacy
The local standard input and output server is the simplest setup, while HTTP mode binds to loopback by default and requires a bearer token. Remote access requires an explicit setting and network protection, because session identifiers do not replace authentication.
Project file reads stay inside the selected project folder, and common credential files are denied while text is checked against common credential patterns. These checks cannot detect every secret, so keep sensitive values out of files an agent can read.
Verification is off by default, but when enabled it runs configured programs without a shell and checks that the working folder stays inside the named workspace. Child programs are not sandboxed, so they retain the access granted by your account.
Help improve it
Use doctor before sending work, and when reporting a problem include the provider name, version, operating system, the action you tried, and whether the provider accepted the task or returned a completed result. Leave private prompts and credentials out of reports.
The project welcomes reproducible compatibility reports and code contributions, especially when they explain what happened on a specific provider version and computer.