cipher-mcp-registry — x402-gated Official MCP Registry search

MCP Registry search, $0.005 per call.

One HTTP call, one JSON response: the top 10 MCP servers matching your keyword. Priced at $0.005 USDC on Base via the x402 protocol. No login, no subscription — your AI agent auto-pays and gets a typed list of servers, versions, repos, and remote MCP endpoints.

Endpoint

GET https://cipher-mcp-registry.vercel.app/api/mcp/search?q=github

# Unpaid: HTTP 402 + accept-list JSON ($0.005 USDC on Base)
# Paid  : HTTP 200 + { query, count, results: Server[] }
#   each Server = { name, title, description, version, repository, remotes[] }

Why

Agents that orchestrate MCP servers need to discover the right server for a user intent on the fly. Instead of bundling a stale copy of the MCP directory, have the agent query this endpoint per-intent, pay $0.005, and get a live top-10 straight from registry.modelcontextprotocol.io.

Free resources

Playbook: cryptomotifs/cipher-starter
More x402 endpoints: cipher-x402.vercel.app

Payout

x402 payout wallet (Base / USDC): 0xa0630fAD18C732e94D56d2D5F630963eb8fB9640