Lithium Vault

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_comparables	$0.20	Cost-curve percentile + nearest peers, resource-size rank, and balance-sheet survival rank vs the whole tracked universe — every figure cited
lithium_vault_verdict	$0.05	A cited, plain-language read: cost-curve position, balance-sheet survival, permitting/dev stage, risks, strengths, and data gaps — facts only, not investment advice
lithium_spodumene_history	$0.05	Historical SC6 spodumene concentrate benchmark price series (daily/weekly/monthly), market-wide — no entity needed

lithium_vault_summary, lithium_vault_raw, lithium_vault_comparables, and lithium_vault_verdict each take 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.

lithium_spodumene_history takes no entity — it's a single market-wide price series. Optional inputs: interval (daily | weekly | monthly, default daily), from and to (YYYY-MM-DD). Omit all three for the full daily history.

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 — see the tool table above for which tool costs what). The default X402_MAX_PRICE of 0.25 already covers every tool, including the $0.20 lithium_vault_comparables tier.

License

MIT