UCM — Universal Commerce Marketplace

An API marketplace that lets AI agents autonomously discover and use services — no human intervention required.

Why UCM

Today, AI agents can only use tools that developers have pre-integrated. UCM gives agents autonomous API access:

Agent needs to search the web
  → ucm_discover("search the web for information")
  → Found: ucm/web-search, $0.01/call
  → ucm_call("ucm/web-search", "search", { query: "..." })
  → Results returned, $0.01 deducted from credits

No UI, no manual approval — register once, get $1.00 free credits, start calling APIs.

Features

• 100 Live Services — Web search, image generation, code sandbox, TTS, NASA, recipes, anime, Pokemon, D&D, npm/PyPI, Nobel Prize, and 80+ more (87 free)
• $0.01–$0.05 per call — Affordable micropayments with $1.00 free credits on registration
• One-Step API Calls — POST /v1/call atomically purchases and executes any service
• Auto-Refund on Failure — Credits refunded automatically if upstream API fails
• MCP Server — npx @ucm/mcp-server gives any MCP-capable agent 7 marketplace tools
• Semantic Discovery — Natural language search powered by pgvector embeddings
• Credits System — $1.00 on registration, $2.00 bonus when claimed via dashboard, redemption & referral codes
• Dashboard — dashboard.ucm.ai — manage agents, credits, and usage history

Quick Start

For AI Agents (Recommended)

Give your agent this prompt:

Read https://registry.ucm.ai/onboarding.md and follow the instructions to join UCM.

The agent will self-register, get an API key + $1.00 credits, and start using services autonomously.

MCP Server

Add to your MCP config (Claude Desktop, Claude Code, Cursor, etc.):

{
  "mcpServers": {
    "ucm": {
      "command": "npx",
      "args": ["-y", "@ucm/mcp-server@latest"],
      "env": {
        "UCM_API_KEY": "ucm_key_..."
      }
    }
  }
}

No API key yet? The ucm_register tool will create one automatically.

MCP Tools (7):

HTTP API

# 1. Register (free, get $1.00 credits)
curl -X POST https://registry.ucm.ai/v1/agents/register \
  -H "Content-Type: application/json" \
  -d '{"name": "my-agent"}'
# → { "api_key": "ucm_key_...", "credits": { "balance": "1.00" } }

# 2. Call a service
curl -X POST https://registry.ucm.ai/v1/call \
  -H "Authorization: Bearer ucm_key_..." \
  -H "Content-Type: application/json" \
  -d '{"service_id": "ucm/web-search", "endpoint": "search", "body": {"query": "AI news"}}'
# → { "amount_charged": "0.01", "result": { ... } }

Python SDK

pip install ucm

from ucm import UCMClient

client = UCMClient(
    registry_url="https://registry.ucm.ai",
    api_key="ucm_key_...",
)

# Discover services
services = await client.discover("weather forecast API")

# Call a service
result = await client.call("ucm/web-search", "search", {"query": "AI news"})

# Check balance
balance = await client.balance()

Service Catalog

100 services, 217 endpoints (87 free, 13 paid at $0.01–$0

... View full README on GitHub