supership-scan

Crossing

Cross-substrate procurement for agents. Built by Crest Deployment Systems.

Point Crossing at any x402-priced data feed or service -- on Base, Solana, or Polygon -- and it buys it for you. You hold no wallet on the seller's chain, sign nothing, and bridge nothing. Crossing fronts the payment from its own treasury, verifies delivery on-chain, and hands you the goods.

Published on npm as supership-scan for install continuity. The server it ships is Crossing.

Install

npm install -g supership-scan

Requires Node.js 18+.

MCP server

npx -y -p supership-scan crossing

Starts the Crossing MCP server (stdio) for any MCP client -- Claude Code, Cursor, Windsurf. Or wire it into your client config:

{
  "mcpServers": {
    "crossing": {
      "command": "npx",
      "args": ["-y", "-p", "supership-scan", "crossing"]
    }
  }
}

Tools

Tool	What it does
procure	Buy any x402 source across any substrate. Pass the URL; get the goods back. First procurements are free.
list_catalog	Browse sources Crossing can buy: crypto market data, news, on-chain analytics, prices.
scan_directory	Scan a local directory for security issues before you ship. Free tier returns score + grade; no source stored.

How procurement works

• You ask Crossing to procure a source URL, or pick one from list_catalog.
• Crossing reads the seller's x402 terms, on whatever chain they price in.
• Crossing pays from its own treasury and takes delivery.
• You get the data back with the on-chain settlement reference. No wallet, no bridge, no chain of your own required.

This is the caravan: one agent that reaches markets you can't, and brings the goods home.

HTTP API

Crossing runs as an x402-native service too.

Endpoint	Method	Price	Description
/catalog	GET	Free	Sources Crossing can procure
/sample?url=	GET	Free	Procure one source, on the house
/procure?url=	GET	per-call	Procure any source; Crossing fronts the seller cost and delivers
/scan/free	POST	Free	Code security score + grade

API base: https://supership.crestsystems.ai

Discovery: agent.json | llms.txt | OpenAPI

What Crossing does not do

• It does not hold your funds. The MCP server holds no keys and moves no money locally.
• It does not give investment advice. It procures the data you ask for; what you do with it is yours.
• It does not resell under its own name. You get the seller's goods plus a delivery receipt.

License

Apache 2.0. See LICENSE.