Lightningfaucet MCP Server - install & status [2026]

01 · Install Lightningfaucet MCP Server

before you install - you'll need

Set LIGHTNING_WALLET_API_KEY before connecting.

Claude Code

claude mcp add lightningfaucet-mcp-server -- npx -y lightning-faucet-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "lightningfaucet-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "lightning-faucet-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package lightning-faucet-mcp - unscoped; check the name against the project README before installing

registry namespace io.github.lightningfaucet is GitHub-verified and matches the repo owner

03 · What Lightningfaucet MCP Server can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can delete the saved credentials file, request a paid API. Detects L402 (Lightning) or X402 (USDC on Base) on HTTP 402 and pays automatically, log in to a service with LNURL-auth, and create an account.

Capability map

Tools grouped from the project's README - what Lightningfaucet MCP Server lets an agent do.

read & search

4 tools - e.g. Service status, version and supported features (no key needed); Rate-limit status and requests remaining; Transaction history

get_info · get_rate_limits · get_transactions · list_agents

Invoice

4 tools - e.g. Decode a BOLT11 invoice: amount, destination, expiry (no key needed); Invoice to receive sats; Has an invoice been paid

decode_invoice · create_invoice · get_invoice_status · get_deposit_invoice

Pay

3 tools - e.g. Request a paid API. Detects L402 (Lightning) or X402 (USDC on Base) on HTTP 402 and pays automatically; Pay any BOLT11 invoice; returns the preimage; Pay user@domain

pay_l402_api · pay_invoice · pay_lightning_address

auth & access

2 tools - e.g. Delete the saved credentials file; Log in to a service with LNURL-auth

forget_credentials · lnurl_auth

Claim

2 tools - e.g. Pull funds from an LNURL-withdraw link; Claim the install promo manually (it is also granted automatically after verification)

claim_lnurl_withdraw · claim_promo

Withdraw

2 tools - e.g. Withdraw to an external invoice (minimum 10 sats); LNURL-withdraw link to sweep into any wallet by QR

withdraw · create_withdraw_link

Whoami

1 tool - e.g. Current identity (operator or agent), balance, where the key came from

whoami

Check

1 tool - e.g. Balance in sats

check_balance

Latest releases

v1.6.1 · 2026-09-11

pay_l402_api reports a first-party call that the backend refunded (for example an upstream fetch that failed after payment) as not paid, with refunded_sats, instead of a paid success. The signal comes only from the…

v1.6.0 · 2026-09-11

v1.2.9 · 2026-03-23

Lightning Wallet MCP v1.2.9 · Lightning wallet for AI agents. MCP server + CLI for Bitcoin Lightning payments. · 37 MCP tools for wallet management, Lightning payments, and L402 API access · L402 + X402 paid API…

04 · Who maintains Lightningfaucet MCP Server

mcp-server is maintained by lightningfaucet. We track 2 MCP servers from lightningfaucet - 2 actively maintained, 18 combined GitHub stars, oldest repo from Jan 2026. Full record: all servers from lightningfaucet.

Lightning Wallet Give AI agents a Bitcoin wallet with Lightning Network payments and L402 support. ★ 9

05 · Facts

repository: github.com/lightningfaucet/mcp-server
category: finance - ranked #115 of 318 actively-maintained finance servers as of 2026-09-18.
release cadence: 2 releases in the last 90 days (latest 2026-09-11)
registry: io.github.lightningfaucet/mcp-server (active, first published 2026-01-16)
packages: npm:lightning-faucet-mcp

06 · Lightningfaucet MCP Server FAQ

Is Lightningfaucet MCP Server still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-15 and it shipped 2 releases in the last 90 days. We re-verify nightly.

What can Lightningfaucet MCP Server do?

With this server connected, an agent can delete the saved credentials file, request a paid API. Detects L402 (Lightning) or X402 (USDC on Base) on HTTP 402 and pays automatically, log in to a service with LNURL-auth, and create an account.

How do I install Lightningfaucet MCP Server?

Run `npx -y lightning-faucet-mcp`. The README documents one environment variable (LIGHTNING_WALLET_API_KEY) to set first. Set LIGHTNING_WALLET_API_KEY before connecting. You can also paste the ready-made client config above.

Does Lightningfaucet MCP Server run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Lightningfaucet MCP Server

Alternatives to Lightningfaucet MCP Server

Maintained finance servers if Lightningfaucet MCP Server isn't the fit.

Pairs well with

Servers that cover what Lightningfaucet MCP Server doesn't - only shown when the pairing reason fits the companion.

More finance MCP servers · Drillr - The financial MCP for AI agents · ATEX AI Gateway · Twitr Sh · Longbridge MCP Server · Open Invest

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