Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read-only regulatory source retrieval, citation tracing, authority metadata, and recent filings.
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.
RIVAL_API_KEY, RIVAL_API_BASE_URL, RIVAL_FIXTURE_MODEValues 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 …”.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"rival-regulatory-toolkit": {
"command": "npx",
"args": [
"-y",
"@tryrival/regulatory-toolkit"
],
"env": {
"RIVAL_API_KEY": "your-value",
"RIVAL_API_BASE_URL": "your-value",
"RIVAL_FIXTURE_MODE": "your-value"
}
}
}
}Run this in your terminal
claude mcp add rival-regulatory-toolkit --env RIVAL_API_KEY=your-value --env RIVAL_API_BASE_URL=your-value --env RIVAL_FIXTURE_MODE=your-value -- npx -y @tryrival/regulatory-toolkitFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"rival-regulatory-toolkit": {
"command": "npx",
"args": [
"-y",
"@tryrival/regulatory-toolkit"
],
"env": {
"RIVAL_API_KEY": "your-value",
"RIVAL_API_BASE_URL": "your-value",
"RIVAL_FIXTURE_MODE": "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": {
"rival-regulatory-toolkit": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@tryrival/regulatory-toolkit"
],
"env": {
"RIVAL_API_KEY": "your-value",
"RIVAL_API_BASE_URL": "your-value",
"RIVAL_FIXTURE_MODE": "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 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.
RIVAL_API_BASE_URL envRIVAL_FIXTURE_MODE envThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Runs on your computer; the tool list appears in your AI app after you install it.
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 rival-intelligence, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
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: RIVAL_API_KEY
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).
The GitHub repo last changed –, and the latest version (0.1.5) reached the registry 6 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, Rystic
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.
Start, seed, clock, inspect and diff Rystic API simulators from your agent.
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.
Open-source SDK, CLI, MCP server, and schemas for connecting AI agents to Rival's source-grounded regulatory retrieval API.
https://api.tryrival.aiThis repository is the developer and agent connectivity layer for Rival. It is intentionally read-only in its first release: agents can search, retrieve source text, trace citations, list authorities, and inspect recent filings. Workspace actions, document review, evidence requests, filings, and task creation remain behind managed Rival access and human review gates.
npm install @rival-intelligence/regulatory-toolkit
For local development from source:
npm install
npm run build
export RIVAL_API_KEY="rv_live_..."
export RIVAL_API_BASE_URL="https://api.tryrival.ai"
For local evaluation without API access:
export RIVAL_FIXTURE_MODE=true
import { RivalRegulatoryClient } from '@rival-intelligence/regulatory-toolkit';
const rival = new RivalRegulatoryClient({ apiKey: process.env.RIVAL_API_KEY, });
const results = await rival.searchRegulatoryCorpus({ query: '49 CFR 195.573', limit: 5, });
console.log(results.results[0]?.source.citation);
rival-regulatory search "49 CFR 195.573"
rival-regulatory source "cfr-49-195-573" rival-regulatory trace "49 CFR 195.573" rival-regulatory authorities
Fixture mode:
rival-regulatory search "pipeline corrosion" --fixture
Run directly:
npx @rival-intelligence/regulatory-toolkit mcp
MCP client example:
{
"mcpServers": { "rival-regulatory": { "command": "npx", "args": ["-y", "@rival-intelligence/regulatory-toolkit", "mcp"], "env": { "RIVAL_API_KEY": "rv_live_...", "RIVAL_API_BASE_URL": "https://api.tryrival.ai" } } } }
Available MCP tools:
search_regulatory_corpusretrieve_source_texttrace_citationlist_authoritiesget_recent_filingsDocker belongs in this repository because many compliance, legal, consulting, energy, and infrastructure teams will run agent tools inside controlled environments. The image runs the MCP server and reads credentials from environment variables.
docker build -t rival-regulatory-toolkit .
docker run --rm -i \ -e RIVAL_API_KEY="$RIVAL_API_KEY" \ -e RIVAL_API_BASE_URL="https://api.tryrival.ai" \ rival-regulatory-toolkit
Fixture mode:
docker run --rm -i -e RIVAL_FIXTURE_MODE=true rival-regulatory-toolkit
See docs/self-hosting.md for deployment notes.
The API contract starts with five read-only endpoints:
GET /api/v1/searchGET /api/v1/sources/{source_id}GET /api/v1/citations/traceGET /api/v1/authoritiesGET /api/v1/filings/recentThe contract lives in openapi/rival-regulatory-api.yaml.
This toolkit does not submit filings, alter compliance records, close corrective actions, delete evidence, or take workspace actions. It is a source retrieval and citation layer for agents and developer systems. Regulated work still requires qualified human review.
This toolkit is not legal, engineering, environmental, safety, or compliance advice. Teams are responsible for validating applicability, obligations, filings, and operational decisions with qualified professionals.
npm install
npm run build npm test
Apache-2.0