Hive Barter

hive-mcp-barter

[srotzin/hive-mcp-barter MCP server]

Outbound 402 arbitrage agent — Hive Civilization

Probes 402-enabled MCP endpoints, counter-offers below asking, and settles when the spread clears our resale floor. Pure protocol — no DMs, no spam. Attribution headers on every request.

Council provenance: Ad-hoc, user-promoted 2026-04-27 (Tier A position 1).

What this is

hive-mcp-barter is a Model Context Protocol server that runs an outbound arbitrage loop on top of the 402 payment surface. It scans public MCP registries for 402-enabled endpoints, probes them with standard quote requests, and — when target_asking × counter_pct still lands below our resale floor — issues a single-shot, pre-signed counter-offer. The target accepts by broadcasting our pre-signed transaction; there is no haggle, no second round, and no human-readable outreach.

• Protocol: MCP 2024-11-05 over Streamable-HTTP / JSON-RPC 2.0
• Transport: POST /mcp
• Discovery: GET /.well-known/mcp.json
• Health: GET /health
• Settlement: USDC on Base L2 — real rails, no mock, no simulated
• Brand gold: Pantone 1245 C / #C08D23

Tools

REST endpoints

Counter-offer envelope

{  "x402_version": 1,  "intent": "counter_offer",  "originator_did": "did:hive:morph",  "asking_seen_usd": "0.05",  "offer_usd": "0.0325",  "offer_atomic_usdc_base": "32500",  "tx_pre_signed": "0x...",  "expires": "2026-04-27T20:30:00Z",  "attribution": {    "agent": "hive-mcp-barter",    "attribution_id": "barter-{uuid}",    "policy": "single-shot-no-haggle"  }}

The pre-signed transaction is the entire commitment. The target accepts by broadcasting; we never have to re-sign on accept.

Resale floor

If target_asking × counter_pct ≤ our_resell × 0.95, we counter. Otherwise we skip — there is no margin.

Risk controls

All caps fail-closed. Configurable via env vars; missing or invalid env always falls back to the stricter default.

Configuration

Signing is opt-in. The repo does not include a key. To enable real counter-offers, set PRIVATE_KEY in the Render dashboard (or your deployment env). To enable the 5-min cron loop, set ENABLE_OUTBOUND=true.

Run locally

git clone https://github.com/srotzin/hive-mcp-barter.gitcd hive-mcp-barternpm installnpm start# server up on http://localhost:3000/mcpcurl http://localhost:3000/healthcurl http://localhost:3000/.well-known/mcp.jsoncurl http://localhost:3000/v1/barter/today

Connect from an MCP client

Claude Desktop / Cursor / Manus — add to your mcp.json:

{  "mcpServers": {    "hive_mcp_barter": {      "command": "npx",      "args": ["-y", "mcp-remote@latest", "https://hive-mcp-barter.onrender.com/mcp"]    }  }}

Hive Civilization

Part of the Hive Civilization — sovereign DID, USDC settlement, agent-to-agent rails. Companion shims include hive-mcp-evaluator, hive-mcp-compute-grid, hive-mcp-depin, hive-mcp-agent-storage, hive-mcp-agent-kyc, and hive-mcp-trade.

License

MIT (c) 2026 Steve Rotzin / Hive Civilization

Hive Civilization Directory

Part of the Hive Civilization — agent-native financial infrastructure.

• Endpoint Directory: https://thehiveryiq.com
• Live Leaderboard: https://hive-a2amev.onrender.com/leaderboard
• Revenue Dashboard: https://hivemine-dashboard.onrender.com
• Other MCP Servers: https://github.com/srotzin?tab=repositories&q=hive-mcp

Brand: #C08D23