tereno-mcp

🛡️ Check before you act — an MCP server for Base, over x402

Ask what it costs before you pay for it. Free catalog, pricing and receipt tools work with no wallet and no signup; paid answers settle per call in USDC, and reusing an answer another agent already paid for costs less.

npx -y tereno-mcp

⚡ Why this exists

An agent that reads a contract, signs a transaction or scrapes a page is acting on information it cannot verify. Most tools answer what something is. None of them tell you how long that answer stays true.

tereno-mcp puts Tereno inside any MCP client. Every paid answer comes back with the evidence behind it, the limits of that evidence, and the block it stops being valid at.

• No API key, no signup. The agent's wallet is the identity.
• Price before payment. tereno_price tells you the cost and whether the answer already exists, without a wallet and without committing to anything.
• Cheaper when shared. Deterministic answers are reused across agents: the first caller pays to compute, everyone after pays the reuse price.

🚀 Install

Add it to any MCP client — Claude Desktop, Claude Code, Cursor, Cline, Windsurf:

{
  "mcpServers": {
    "tereno": {
      "command": "npx",
      "args": ["-y", "tereno-mcp"]
    }
  }
}

Restart the client. Nothing else to configure — the free tools work immediately.

🆓 Free, no wallet needed

tereno_price is the one worth knowing about. It names the reuse tier out loud:

hit      another agent already paid to compute this and it is still fresh
partial  the durable half survived; only the expired part is recomputed
miss     nothing to reuse — this call computes it, and the next asker pays less

💳 Paid per call

... View full README on GitHub