Open Primitive Mcp

Created By
writesdavid2 months ago
17 US federal data domains as MCP tools. FDA drugs, EPA water, CMS hospitals, NHTSA cars, BLS jobs, Census demographics, SEC filings, NOAA weather, and more. Signed responses with provenance
Overview

Open Primitive Protocol (OPP)

The data layer of the agent internet.

OPP defines how data providers make their data agent-consumable, verifiable, and discoverable. Three components: provider manifest, response envelope, query interface.

The Problem

Agents get data naked. No provenance. No freshness guarantee. No confidence score. No way to verify the source. The agent internet is missing its data envelope.

The Protocol

ComponentWhat it does
Manifest (/.well-known/opp.json)Declares what data a provider serves, how fresh it is, how to verify it
Response EnvelopeEvery response carries domain, source, freshness, confidence, citation, Ed25519 signature
Query InterfaceStandardized HTTP GET endpoints with predictable parameters

Conformance Levels

  • Level 1 (Basic): Manifest + envelope with domain/source/freshness
  • Level 2 (Cited): Level 1 + confidence scores + citations
  • Level 3 (Verified): Level 2 + Ed25519 cryptographic proof

Reference Implementation

Live at api.openprimitive.com. 16 US federal data domains across 11 agencies. Level 3 compliant — every response is signed.

curl https://api.openprimitive.com/v1/drugs?name=aspirin
# Returns OPP envelope with proof.type: "DataIntegrityProof"

Quick Start

Use data from an OPP provider:

const res = await fetch('https://api.openprimitive.com/v1/drugs?name=aspirin');
const data = await res.json();
console.log(data.citations.statement);
// "According to FDA FAERS, aspirin has 601,477 reported adverse events"

Implement OPP for your own data:

// 1. Create /.well-known/opp.json (see spec)
// 2. Wrap responses in the OPP envelope
// 3. Optionally sign with Ed25519

Specification

Full spec: openprimitive.com/protocol.html

Detailed spec: api.openprimitive.com/spec.html

SDK

  • sdk/opp-client.js — Client library for consuming OPP providers
  • sdk/opp-provider.js — Helper for implementing OPP
  • sdk/opp-validator.js — Validate OPP conformance

MCP Server

13 tools for Claude, Cursor, and MCP-compatible agents:

npx open-primitive-mcp

License

MIT

Server Config

{
  "mcpServers": {
    "open-primitive": {
      "command": "npx",
      "args": [
        "-y",
        "open-primitive-mcp"
      ]
    }
  }
}
Project Info
Created At
2 months ago
Updated At
2 months ago
Author Name
writesdavid
Star
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Language
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License
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Category

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