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streamable-httpMITupdated 3mo ago

The open infrastructure for agent-native commerce.

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Was kannst du mit discovery machen?

Protocol Commerce

The open infrastructure for agent-native commerce.

Protocol Commerce is an open initiative to create standardized, auditable, and interoperable protocols for AI agent-driven commerce. This repository contains the specification, SDKs, and technical manifesto.

Contents

Directory Description
manifesto/ Why open protocols matter for commerce — principles, landscape analysis, and rationale
adcp-spec/ AdCP v0.1.0 — Agentic Discovery Commerce Protocol specification, JSON schemas, and examples
adcp-sdk-typescript/ TypeScript SDK: types, validators, client, and scoring reference implementation
webmcp-reference/ WebMCP browser integration: expose commerce tools to in-browser AI agents via navigator.modelContext
amdp-spec/ AMDP v0.1.0 — Agent Mandate Discovery Protocol: cross-vertical authorization spec, JSON schemas, and example mandates
agentic-kit/ Agentic Kit — the trust layer: building blocks for verifiable + auditable AI agents
lean-verification/ Lean 4 formal verification — 47 theorems proving auction/budget/wallet/policy correctness, lake build-checkable

Quick Start

npm install @protocol-commerce/adcp-sdk

import { AdcpClient } from '@protocol-commerce/adcp-sdk';

const client = new AdcpClient({
  serverUrl: 'https://mcp.nexbid.dev',
  apiKey: 'your-api-key',
});

const results = await client.search({
  query: 'organic olive oil',
  intent: 'purchase',
  geo: 'CH',
});

The Problem

AI agents are becoming the primary interface for product discovery and purchase. The protocols powering this shift — OpenAI's ACP, Google's UCP — are proprietary and platform-controlled. Publishers have no representation. There is no open standard.

Protocol Commerce fills this gap.

Read the full Technical Manifesto →

Key Principles

  1. Open by Default — MIT-licensed, auditable, forkable
  2. Publisher Parity — Publishers are first-class protocol participants
  3. Privacy Native — Context signals, not user profiles
  4. Transparent Scoring — Public formula: score = 0.4×bid + 0.4×relevance + 0.2×quality

All 7 principles →

Reference Implementation: Nexbid

Nexbid is the production-grade reference implementation of Protocol Commerce, built by digital opua GmbH (CHE-435.289.702, Switzerland).

Metric Status
MCP Integration Native — full commerce lifecycle
Formal Verification Lean 4 — core security properties proven
Privacy Cookie-free, Swiss-hosted, nDSG + GDPR compliant
AI Scoring Multi-provider, model-agnostic
Phase Production-grade closed beta

Connect Any LLM

{
  "mcpServers": {
    "nexbid": {
      "url": "https://mcp.nexbid.dev/mcp",
      "transport": "streamable-http"
    }
  }
}

Any MCP-compatible LLM (Claude, GPT-4, Gemini) can directly search, browse, and purchase products through the Nexbid marketplace.

Why Formal Verification?

Nexbid is the only commerce platform whose core security properties are mathematically proven in Lean 4 — not just tested, but proven correct for all possible inputs.

→ Technology details · How Nexbid compares

Sponsors

Sponsor Role
Nexbid Initiator, reference implementation, initial maintainer

License

MIT — Use it, fork it, build on it. No strings attached.

Links