Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Reliable async execution for agent tool calls: schema gating, retries, idempotency, audit trail.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
KLANEX_API_KEY, X-API-KeyValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"klanex": {
"command": "npx",
"args": [
"-y",
"klanex-mcp"
],
"env": {
"KLANEX_API_KEY": "your-value"
}
}
}
}Run this in your terminal
claude mcp add --transport http klanex https://api.klanexai.com/mcp --header 'X-API-Key: your-value'claude mcp add klanex --env KLANEX_API_KEY=your-value -- npx -y klanex-mcpFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"klanex": {
"url": "https://api.klanexai.com/mcp",
"headers": {
"X-API-Key": "your-value"
}
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"klanex": {
"command": "npx",
"args": [
"-y",
"klanex-mcp"
],
"env": {
"KLANEX_API_KEY": "your-value"
}
}
}
}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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"klanex": {
"type": "http",
"url": "https://api.klanexai.com/mcp",
"headers": {
"X-API-Key": "your-value"
}
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"klanex": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"klanex-mcp"
],
"env": {
"KLANEX_API_KEY": "your-value"
}
}
}
}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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
X-API-Key secret required HTTP headerThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
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
The registry name was verified with the GitHub account chrassy, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
You need to fill in: KLANEX_API_KEY, X-API-Key
Either way works: install it on your computer or connect to the cloud version.
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 4 months ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, FlyDocs
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Spec-driven development workflow: your agent works issues, sessions and the status lifecycle.
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.
Reliable execution for agent tool calls, as an MCP server.
klanex is an async execution layer between an agent's tool-use intents and real third-party APIs: it schema-gates hallucinated payloads before anything runs, absorbs rate limits and outages with retries/backoff/circuit breakers, encrypts credentials, keeps an audit trail, and reports back via signed webhooks. With this MCP server, an agent submits a call once — klanex makes sure it lands.
Failures come back written *for the model*: every error carries an llm_hint telling the agent exactly what to fix (or that klanex is already handling it), so agents self-correct instead of guessing.
klanex's MCP server is hosted — no install needed if your client supports HTTP transports:
| Endpoint | Environment | Keys |
|---|---|---|
https://api.klanexai.com/mcp | production | klx_live_… |
https://api.sandbox.klanexai.com/mcp | sandbox (free to try) | klx_test_… |
Get an API key at klanexai.com — sandbox keys are free.
Claude Code
claude mcp add --transport http klanex https://api.klanexai.com/mcp \
--header "X-API-Key: klx_live_..."
Cursor / Windsurf / VS Code (mcp.json)
{
"mcpServers": { "klanex": { "url": "https://api.klanexai.com/mcp", "headers": { "X-API-Key": "klx_live_..." } } } }
Authorization: Bearer klx_... works too, for clients that can only set that header.
For clients that only speak stdio (e.g. Claude Desktop), this package proxies stdio to the hosted endpoint:
{
"mcpServers": { "klanex": { "command": "npx", "args": ["-y", "klanex-mcp"], "env": { "KLANEX_API_KEY": "klx_live_..." } } } }
The shim routes by key prefix — klx_test_… keys go to the sandbox automatically. Set KLANEX_MCP_URL to override.
| Tool | What it does |
|---|---|
execute | Submit an HTTP call for reliable async execution: optional JSON Schema gate, retries/backoff/circuit breakers, idempotency keys, human approval gates, encrypted credentials. wait_seconds blocks up to 55s for the terminal result. |
get_execution | Current status, attempts, target response, or classified error for an execution. |
list_executions | The account's executions, filterable by status/time, paginated. |
replay_execution | Re-run a terminal execution byte-exact — outage recovery without re-prompting the LLM. |
get_usage | Plan and current-month usage/quota. |
list_connections | Stored credential connections (token vault) to reference via connection_id — so secrets never pass through model context. |
payload_schema and mismatches return synchronously with a correction hint.idempotency_key makes submits safe to retry.requires_approval pauses execution for an approve/reject decision (API, dashboard, or Slack buttons).Full API docs: api.klanexai.com/docs
MIT