lithium-vault-mcp

An MCP server that gives your AI agent primary-source lithium / battery-metals mining data — production, AISC, reserves, ownership, royalties, offtakes, and corporate financials for 40 producers and 49 mines, every figure extracted from SEC / ASX / TSX / SEDAR / cninfo filings and FX-normalized to USD.

Data comes from the Lithium Research Vault (listed on agentic.market). Each tool call is paid per request in USDC over x402 from your own wallet — no subscription, no API key on our side.

Tools

| Tool | Price | Returns | |------|-------|---------| | lithium_vault_summary | $0.02 | One-row headline: latest production, volume-weighted AISC, realized price, cash/debt/EBITDA/FCF, reserves, top holder, source filing | | lithium_vault_raw | $0.05 | Full structured rows: every period of production, AISC, reserves, ownership, royalties, offtakes, financials | | lithium_vault_story | $0.20 | LLM narrative, every sentence cited to a primary filing URL |

Each takes entity (a ticker like ALB, SQM, PILBF, ATUSF, or a mine name like Greenbushes, Pilgangoora, Grota do Cirilo) and level (company or mine). If the entity isn't in the vault you get a 400 and no charge.

Prerequisites

A funded Coinbase CDP wallet with USDC on Base. You bring your own wallet; the server pays the per-call fee from it (CDP covers gas). Get CDP API credentials at portal.cdp.coinbase.com.

Install & configure

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "lithium-vault": {
      "command": "npx",
      "args": ["-y", "lithium-vault-mcp"],
      "env": {
        "CDP_API_KEY_ID": "your-cdp-api-key-id",
        "CDP_API_KEY_SECRET": "your-cdp-api-key-secret",
        "CDP_WALLET_SECRET": "your-cdp-wallet-secret",
        "X402_MAX_PRICE": "0.25"
      }
    }
  }
}

Claude Code

claude mcp add lithium-vault \
  --env CDP_API_KEY_ID=... \
  --env CDP_API_KEY_SECRET=... \
  --env CDP_WALLET_SECRET=... \
  --env X402_MAX_PRICE=0.25 \
  -- npx -y lithium-vault-mcp

Configuration

| Env var | Default | Purpose | |---------|---------|---------| | CDP_API_KEY_ID / CDP_API_KEY_SECRET / CDP_WALLET_SECRET | — | Required. Your CDP wallet — the wallet that pays. | | CDP_ACCOUNT_NAME | lithium-vault-mcp | Named CDP account to pay from (auto-created). | | X402_MAX_PRICE | 0.25 | Safety ceiling. The server checks the advertised price before paying and refuses any call above this, so a misconfiguration can never overpay. | | VAULT_BASE_URL | https://clink-lithium-vault.fly.dev | Override only for testing. |

How it works

your agent → MCP tool call → this server → [x402 402 → pay USDC from your wallet → retry] → vault → data

The server reads the endpoint's advertised price first and enforces X402_MAX_PRICE before authorizing any payment. You only ever pay the fixed per-tier price ($0.02 / $0.05 / $0.20).

License

MIT