SchemaFetch MCP Server

Item: SchemaFetch MCP Server
Rating: 54
Author: M8ven

Enables AI agents to extract structured JSON data from web pages using presets or custom JSON schemas, with confidence scores and source snippets, paid per call via USDC on Base.

→ Fourier18/SchemaFetch · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 9 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: X402_CLIENT_PRIVATE_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies9 high22 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highhono@4.7.0GHSA-3vhc-576x-3qv4

Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)

highhono@4.7.0GHSA-88fw-hqm2-52qc

hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configSCHEMAFETCH_BASE_URL— "": "https://schemafetch.panmediatech.workers.dev",

🔐 secretX402_CLIENT_PRIVATE_KEY— "": "0xYOUR_BASE_PRIVATE_KEY_WITH_USDC"

configX402_EXTRACT_URL

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/fourier18-schemafetch-1y5p70)](https://m8ven.ai/mcp/fourier18-schemafetch-1y5p70)

commit: 2ac4d8db46b7245bedd1766fd72a2bbf3b62523a

code hash: 14d6359cc3a9753a91a3a4fa24aec849f1c8ac84393d97fd0e8a1cbc3bafa85d

verified: 7/12/2026, 8:35:33 AM

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