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 Tools MCP
Overview
Description from the maker (original English)
32 free MCP tools for data validation, text optimization, and synthetic test data.
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 in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://agent-tools-mcp.yvan11.workers.dev/mcpRun this in your terminal
claude mcp add --transport http agent-tools https://agent-tools-mcp.yvan11.workers.dev/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"agent-tools": {
"url": "https://agent-tools-mcp.yvan11.workers.dev/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.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"agent-tools": {
"type": "http",
"url": "https://agent-tools-mcp.yvan11.workers.dev/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:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://agent-tools-mcp.yvan11.workers.dev/mcpMenu names can differ slightly by plan and over time.
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
We have not read this server’s tool list yet; we check endpoints in rotation.
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 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account why-see, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 32686 servers in this category
- Published to the registry more recently than 66% of the other 32686 servers in this category
- Basic checks equal to or better than 100% of the other 32686 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 Tools MCP 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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 20 days ago.
Which apps can use it?
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.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Microsoft Exchange Online MCP
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 2 days ago
Install
Microsoft Exchange Online MCP
by servosity
Exchange Online admin for MSPs: forwarding audits, EWS posture and offboarding, no PowerShell
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 Tools MCP
32 free remote MCP tools for validation, optimization and synthetic test data.
Website · 32-tool directory · Health · Registry metadata · MIT License
Connect an agent
Streamable HTTP (all 32 tools): https://agent-tools-mcp.yvan11.workers.dev/mcp
Specialized connectors (same Cloudflare Worker; no extra deploys or credentials):
| Connector | Tools | URL |
|---|---|---|
| Validators MCP | 12 | https://agent-tools-mcp.yvan11.workers.dev/mcp/validators |
| Optimizers MCP | 7 | https://agent-tools-mcp.yvan11.workers.dev/mcp/optimizers |
| Generators MCP | 13 | https://agent-tools-mcp.yvan11.workers.dev/mcp/generators |
Choose the smallest relevant connector. All endpoints share the same rate limits, privacy cautions, source and deployments.
Claude Code:
claude mcp add --transport http agent-tools https://agent-tools-mcp.yvan11.workers.dev/mcpVS Code / Copilot: Command Palette → MCP: Add Server → HTTP → paste the endpoint URL.
Claude Code project `.mcp.json` configuration:
{ "mcpServers": { "agent-tools": { "type": "http", "url": "https://agent-tools-mcp.yvan11.workers.dev/mcp" } } }VS Code `.vscode/mcp.json` configuration:
{ "servers": { "agent-tools": { "type": "http", "url": "https://agent-tools-mcp.yvan11.workers.dev/mcp" } } }Use an MCP client rather than a browser GET request to /mcp, which can return Method not allowed by design.
Security and publishing
This is a public endpoint without authentication. Never submit real passwords, payment-card data, tax identifiers, bank information, private documents, or API secrets. Synthetic generated IDs and seeded passwords are development fixtures only. Read SECURITY.md.
The repo is public and MIT licensed, preserving the vendored source licenses. Cloudflare Workers Builds tests and deploys on commits to main; no GitHub Actions. The official registry descriptor uses io.github.why-see/agent-tools-mcp; Glama metadata identifies the maintainer. See PUBLISHING.md for a no-local-repository submission procedure. These files do not automatically publish a registry listing.
Tool inventory
Validators (12): is-card-safe, is-email-safe, is-iban-safe, is-iso-date-safe, is-ip-safe, is-json-safe, is-password-safe, is-phone-e164, is-uuid-safe, is-url-safe, is-us-tin-safe, is-vat-safe.
Optimizers (7 tools / 6 modules): optimize-dataset, optimize-google-tag, minify-html, minify-js, minify-css, minify-prompt, strip-ansi.
Generators (13): generate-avatar, generate-card-number, generate-color, generate-dataset, generate-fake-data, generate-hash, generate-lorem, generate-password, generate-phone-number, generate-prompt, generate-slug, generate-ssn, generate-token.
Optimizer MCP tool names are action-oriented, while vendored upstream file paths retain their original names. Implementations are derived from the upstream module files. Exact upstream versions and update policy are documented in UPSTREAM.md. The upstream catalogs are not complete or consistent enough to serve as the runtime source of truth; we use explicit audited function adapters.
Tests and deployment
On GitHub, push to main → Cloudflare Workers Builds performs npm test, then npx wrangler deploy only if tests pass. No GitHub Actions are present.
The test suite invokes all 32 MCP tools through the actual handler, including the initialize, tools/list, and tools/call protocol methods. It also verifies the three specialized MCP endpoints, their isolated inventories, and backward compatibility with /mcp.
The Worker has a Cloudflare native rate-limit binding (30 requests per minute per IP per data center), 8-KiB body guard and per-tool input/output bounds.
Optional MCP_API_TOKEN must be a Cloudflare secret, not a GitHub secret or a variable in wrangler.toml.
Restrictions
This public endpoint runs pure software utilities and cannot access your GitHub, Cloudflare, OpenAI or payment accounts. It is not a remotely editable filesystem. Do not send real passwords, payment details or private personal data to its validators. Generated financial identifiers and SSNs are *synthetic test fixtures only*. This service does not provide OAuth, client billing, SLA, global quotas or user identity.
Current catalog size is 32 MCP tool names backed by 31 original upstream modules. An update to an upstream source repo does not automatically rebuild this MCP Worker; see the explicit update policy.
The original four endpoint URLs are unchanged. The seven optimizer operation names were standardized to action-oriented forms in October 2026; clients that explicitly call a previous is-* optimizer name must refresh their tool catalog. The underlying code, inputs, outputs and tool counts are unchanged.