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Pay-per-call agent APIs over x402: web scraping, token compression, and semantic cache.
About
Pay-per-call agent APIs over x402: web scraping, token compression, and semantic cache.
Security Report
7.8
Moderate7.8Low RiskThis MCP server is well-designed with proper authentication via API keys and a sensible free-tier model. The codebase is clean, dependency footprint is minimal, and dangerous operations are absent. Three local-only utility tools reduce network dependency. Minor quality improvements around error handling and input validation are recommended, but do not present security risks. Package verification found 1 issue.
3 files analyzed · 6 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Optional. A funded Gate402 account key to skip the free tier.Required
Environment variable: GATE402_API_KEY
Optional. Override the gateway base URL (default https://gate402.app).
Environment variable: GATE402_BASE_URL
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-pgalyen1987-gate402-mcp": {
"env": {
"GATE402_API_KEY": "your-gate402-api-key-here",
"GATE402_BASE_URL": "your-gate402-base-url-here"
},
"args": [
"-y",
"gate402-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
gate402-mcp
MCP server for Gate402 — pay-per-call agent APIs over HTTP 402 (x402 / USDC on Base). Gives any MCP client four tools with no signup and a free tier on first runs:
| Tool | What it does | Price |
|---|---|---|
gate402_scrape | Fetch any public URL, render JS, strip nav/ads → clean LLM-ready Markdown | $0.002 |
gate402_scrape_stealth | Hardened headless fetch for JS-heavy / bot-protected pages | $0.05 |
gate402_minify | Compress text to cut downstream LLM token spend (~40%) | $0.005 / 10k tok |
gate402_dedup | Semantic vector-cache lookup (exact + cosine) | $0.001 hit / $0.003 miss |
…plus three free tools that run locally in this process (pure compute — no payment, no key, no network):
| Tool | What it does |
|---|---|
gate402_token_count | Estimate the token count of a string (budget your context window) |
gate402_html_to_md | Convert an HTML string you already have into clean Markdown |
gate402_json_repair | Coerce malformed / LLM-mangled JSON into valid JSON |
How billing works
On first use the server self-claims a free-credit API key from Gate402 and caches it at ~/.gate402-mcp/key.json. Calls draw down that credit. When it runs out, tools return a top-up link instead of failing. To skip the free tier, set GATE402_API_KEY to a funded account (top up).
The payment is the auth — there are no accounts to create.
Install
npm install -g gate402-mcp
Or run without installing via npx gate402-mcp.
Configure your MCP client
Claude Desktop / Claude Code
Add to your MCP config (claude_desktop_config.json, or claude mcp add):
{
"mcpServers": {
"gate402": {
"command": "npx",
"args": ["-y", "gate402-mcp"]
}
}
}
Cursor / Cline / Windsurf
Same shape — point the MCP server command at npx -y gate402-mcp.
Environment variables
| Var | Default | Purpose |
|---|---|---|
GATE402_API_KEY | (unset) | Use a funded account instead of the free tier. |
GATE402_BASE_URL | https://gate402.app | Override the gateway (self-hosting / testing). |
GATE402_CONFIG_DIR | ~/.gate402-mcp | Where the cached free key is stored. |
Develop
npm install
npm run build
npm start # or: npm run dev
License
MIT
Reviews
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