SchemaSure — structured extraction MCP Server

by noamjoseio.github.noamjose/schemasurev0.3.0

Extract schema-valid JSON from text/HTML or document images. Pay per call via x402 V2.

Node.jsstdioofficial registry

context tax

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security

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cold start

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freshness

Maintained2mo ago

Install SchemaSure — structured extraction MCP server

claude mcp add schemasure -e SCHEMASURE_PRIVATE_KEY='<schemasure-private-key>' -- npx -y @noamjose/schemasure

{
  "mcpServers": {
    "schemasure": {
      "command": "npx",
      "args": [
        "-y",
        "@noamjose/schemasure"
      ],
      "env": {
        "SCHEMASURE_PRIVATE_KEY": "<schemasure-private-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "schemasure": {
      "command": "npx",
      "args": [
        "-y",
        "@noamjose/schemasure"
      ],
      "env": {
        "SCHEMASURE_PRIVATE_KEY": "<schemasure-private-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "schemasure": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@noamjose/schemasure"
      ],
      "env": {
        "SCHEMASURE_PRIVATE_KEY": "<schemasure-private-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "schemasure": {
      "command": "npx",
      "args": [
        "-y",
        "@noamjose/schemasure"
      ],
      "env": {
        "SCHEMASURE_PRIVATE_KEY": "<schemasure-private-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SCHEMASURE_API_URL	—	—	Base URL of SchemaSure. Text has free V1 evaluation without a wallet; image extraction is V2-only and always requires a wallet.
SCHEMASURE_TIMEOUT_MS	—	—	Per-call request timeout in milliseconds.
SCHEMASURE_PRIVATE_KEY	—	yes	Optional 0x-prefixed EVM key. Enables paid x402 V2 text and image calls; signs Base USDC payments locally. Never sent to SchemaSure.
SCHEMASURE_MAX_PRICE_USD	—	—	Client-side spend cap in USD per call (paid mode). The client refuses to pay more than this, even if the server advertises a higher price.

Freshness

Maintained — last maintenance signal 2mo ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-31 · 2mo ago · official registry · v0.3.0

FAQ

›How do I install the SchemaSure — structured extraction MCP server in Claude Code?

Run: claude mcp add schemasure -e SCHEMASURE_PRIVATE_KEY='<schemasure-private-key>' -- npx -y @noamjose/schemasure. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does SchemaSure — structured extraction require an API key?

Yes. It expects SCHEMASURE_PRIVATE_KEY, of which 1 is a secret.

›Can I use SchemaSure — structured extraction as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is SchemaSure — structured extraction in the official MCP registry?

Yes, as io.github.noamjose/schemasure.