Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Agent-native MCP server over the public saagarpatel.dev corpus. Read-only, stateless.
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We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://mcp.saagarpatel.dev/mcpOpen Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"portfolio": {
"command": "npx",
"args": [
"-y",
"saagar-portfolio-mcp"
]
}
}
}Run this in your terminal
claude mcp add --transport http portfolio https://mcp.saagarpatel.dev/mcpclaude mcp add portfolio -- npx -y saagar-portfolio-mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"portfolio": {
"url": "https://mcp.saagarpatel.dev/mcp"
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"portfolio": {
"command": "npx",
"args": [
"-y",
"saagar-portfolio-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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"portfolio": {
"type": "http",
"url": "https://mcp.saagarpatel.dev/mcp"
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"portfolio": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"saagar-portfolio-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:
https://mcp.saagarpatel.dev/mcpMenu names can differ slightly by plan and over time.
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These 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 saagpatel, 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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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, Draugr
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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.
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Security scanning for AI agents: SAST, SCA, secrets, IaC, DAST, ranked by real risk.
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.
The agent-native layer of saagarpatel.dev: a Model Context Protocol server that lets any AI agent query Saagar's writing, projects, public-safe repo profiles, and benchmark results directly, instead of scraping HTML.
Read-only. Stateless. Public. No auth, no tracking, no database, no runtime egress.
The website stays a pure static site. This server is a sibling, not a backend bolted onto it:
portfolio-index repo): the build emits a static machine corpus — corpus-index.json, per-document corpus/ .json, and .well-known/mcp.json — plus public-safe repo profile artifacts when present, served alongside the HTML. Already public.src/index.ts): a stateless Cloudflare Worker that bakes the Layer 0 corpus into its bundle and serves it over MCP (streamable HTTP, the WebStandardStreamableHTTPServerTransport). Zero runtime fetches.src/stdio.ts): the same server over stdio, for running locally via npx saagar-portfolio-mcp. Identical tool/resource/prompt surface.The shared core (src/server.ts) is transport-agnostic; both layers wrap it.
All read-only (readOnlyHint: true). No tool takes a URL or filesystem path (no SSRF / exfil surface).
| Tool | Purpose |
|---|---|
search | BM25 over the whole corpus; optional section filter, limit |
get_document | Full Markdown of one document by id |
list_corpus | The table of contents; optional type filter |
get_profile | The "who is this" card (about / now / uses) |
list_projects | Curated public-safe projects + anonymized aggregates |
list_repo_profiles | Public-safe repo profile index with freshness and proof counts |
get_repo_profile | One repo answering profile by the repoId argument |
get_operant_results | Public, sanitized OPERANT calibration results (per-model OCS) |
Documents are also exposed as Resources (portfolio://essays/{slug}, portfolio://book/{slug}, portfolio://notes/{slug}, portfolio://profile), and there are two Prompts: introduce_saagar and summarize_writing_on (grounded in a live search).
BM25 over a baked index (no embeddings in v1 — the committed corpus contains 166 docs and the calling LLM supplies the semantics). Titles are boosted. Embeddings are a measured Phase 3 upgrade, added only if retrieval quality proves insufficient.
src/
types.ts corpus + projects + operant shapes bm25.ts dependency-free BM25 + snippet (pure) tools.ts createTools(corpus) -> the 8 tools (pure, injectable) corpus.ts loads the baked corpus + accessors corpus.generated.ts AUTO-GENERATED by build:corpus server.ts buildServer(): shared MCP core (tools + resources + prompts) index.ts Cloudflare Worker transport (streamable HTTP) stdio.ts Layer 2 stdio transport (the npx CLI) scripts/ build-corpus.mjs bakes Layer 0 and local OPERANT inputs into corpus.generated.ts probe-mcp.mjs probes an MCP HTTP endpoint (saagar-mcp-kit driver + domain calls) audit-mcp.sh connected MCPAudit scan of this server (dogfood) test/ vitest: bm25, tools, full-protocol server tests
From the repository root, use the pinned Node and npm versions from .node-version and package.json. The checked-in public-safe corpus is enough for routine checks; no sibling checkout, local portfolio import, signing key, or Cloudflare credentials are needed.
npm ci
make check
make check runs lint, format validation, typecheck, tests, the stdio build and protocol test, smoke, parity, and a package-content check. See CI for the same aggregate gate. npm run dev starts the local Worker.
npm run build:corpus regenerates source from a sibling checkout or an explicit network URL; URL-mode builds omit OPERANT because its build inputs are not published. Corpus generation is not required for ordinary fixture verification. npm run probe:mcp targets the live Worker by default, and the connected audit starts a local Worker and invokes the separately installed mcp-audit CLI. Keep those separate from local gates; deployment and signing remain operator-gated as described below.
Inspect either transport with the MCP inspector:
npx @modelcontextprotocol/inspector http://localhost:8787/mcp # Layer 1 (HTTP)
npx @modelcontextprotocol/inspector node dist/stdio.js # Layer 2 (stdio, after build:cli)
npm run build:corpus && npm run deploy # wrangler deploy
npm run probe:mcp # post-deploy live MCP readback
Operator-gated (needs Cloudflare auth). v1 still deploys to the default portfolio-mcp. .workers.dev URL, and npm run probe:mcp uses that stable Worker URL by default. Public discovery now advertises the verified custom endpoint https://mcp.saagarpatel.dev/mcp; after any deploy, verify both the Worker and the website manifest/readback path before changing .well-known/mcp.json.
wrangler.jsonc pins workers_dev: true so the public Worker URL stays live during any future custom-domain experiments; do not remove it unless the website manifest has already moved to a verified replacement endpoint.
npm run build:corpus && npm run build:cli # -> dist/stdio.js
npm login && npm publish # public package: saagar-portfolio-mcp
Once published, anyone can run it locally with npx saagar-portfolio-mcp (no install).
Ed25519-sign .well-known/mcp.json so an agent or registry can verify it authentically comes from Saagar (via saagar-mcp-kit's signing CLI, Node built-in crypto):
npx mcp-kit-sign gen-key --manifest=../portfolio-index/.well-known/mcp.json # one-time; private key -> .signing/ (gitignored, NEVER commit)
npm run sign # writes .sig + publishes mcp-ed25519.pub npm run sign:verify # checks manifest bytes against .sig + public key
Override paths with --manifest=/--key=/--pub=/--sig=. Commit the .sig + mcp-ed25519.pub (never the private key) into portfolio-index next to the manifest, then redeploy the site. Re-run sign whenever the manifest changes (it signs the exact served bytes).
Designed to pass MCPAudit / mcp-trust (Saagar's own tools): only the inbound MCP transport, no shell_execution / file_access / destructive / exfiltration, and no caller-controlled egress (the corpus is baked). All tools are annotated read-only with plain, non-injectable descriptions. bash scripts/audit-mcp.sh runs a connected scan.
Dogfooding this server surfaced a substring-matching false-positive bug in MCPAudit (it matched port inside portfolio://); that fix lives in the MCPAudit repo and cut this server's findings 62 → 14. The genuine tool surface scans clean (high_risk_servers: 0).
Node.js 24.21.0, npm 12.2.0, TypeScript, Cloudflare Workers, and the MCP SDK.
URL-mode corpus builds omit OPERANT, whose inputs are only available to local corpus builds. Worker deployment and package publication are not part of local verification.
Keep the published MCP endpoint and signed discovery manifest in sync when an operator authorizes a deployment. Registry publication remains a separate, explicitly authorized release action.