Rank 14inactiveL402

Fewsats

Hosted L402 payment platform with an MCP server for agents

inactive: Last releases: fewsats-mcp 0.1.7 on PyPI (June 2025), @fewsats/fewsats-mcp 0.6.13 on npm (March 2025).

Rank: 14 of 14
Composite score: 7.1 / 10
Schemes: L402
Role: Pays 402 challenges
Kind: platform
Maturity: inactive
Protocol / rail: Bitcoin / Lightning (L402)
Assets: BTC
Networks: lightning
Custody model: Custodial (hosted platform, API key)
Node management: Not required
MCP native: Yes
License: MIT
Last verified: 2026-10-15

Overview

Fewsats is a hosted payment platform built around L402. Its MCP server, run with `uvx fewsats-mcp` and an API key, gives agents tools to check a balance, list payment methods, pay L402 offers and look up payment details, with no node or channel management. That convenience is custodial: the platform holds the funds behind the API key. Release activity has stopped — the last PyPI release was June 2025 and the last npm release March 2025 — and an independent analysis by AgentSeal rated the MCP server 19/100 with critical and high-severity findings, so any wallet connected to it should carry only a small balance.

Key advantages

MCP server with balance, payment-method, pay-offer and payment-info tools
No node to run — a hosted platform reached with an API key
Purpose-built around L402 offers

Trade-offs

Custodial: funds sit with the platform, reached through FEWSATS_API_KEY
No release in over 12 months on either PyPI or npm
An independent analysis (AgentSeal) rated the MCP server 19/100, citing critical and high-severity findings — connect only a small balance

Evaluation matrix

Custody & Sovereignty4.0
Self-custodial with exit guarantees vs. centralized/custodial risk. A 10 means the holder keeps their own keys and can unilaterally exit to the base chain; a custodial platform scores around 4.
Operational Friction9.0
Infrastructure burden. Zero nodes, channels or liquidity to manage scores a 10; running and maintaining your own Lightning node scores around 4–5.
Agent Native Support7.0
Out-of-the-box MCP server integration, typed tool calls and LLM-friendly setup. A first-party MCP server scores 9–10; a library or CLI an agent can drive scores 6–8.
Payment Rails & Assets7.0
Breadth of settlement rails and assets: Lightning for true micropayments, stablecoins for a stable unit of account, cards for mainstream reach. A single asset on a single network scores around 7.
Settlement Speed & Fees9.0
Instant sub-second settlement with near-zero overhead scores a 10. Block-bound settlement scores around 8; card-network settlement and fees score lower.
Developer DX6.5
SDK quality, documentation, maintenance and copy-paste integration speed. Alpha-stage API churn, stale releases or inconsistent docs lower the score.

Why these scores. Custody 4: custodial platform behind an API key. Friction 9: hosted, nothing to run. Agent 7: an MCP server exists but is inactive and has published security findings. Rails 7: Lightning bitcoin. Settlement 9: Lightning. DX 6.5: no recent releases.

Integration

Run the MCP server

uvx fewsats-mcp

Claude Desktop configuration

{
  "mcpServers": {
    "Fewsats": {
      "command": "uvx",
      "args": ["fewsats-mcp"],
      "env": { "FEWSATS_API_KEY": "YOUR_FEWSATS_API_KEY" }
    }
  }
}

Best for

Quick experiments paying L402 offers from an MCP client, with small balances.

Sources

Every claim on this page was checked against these sources on 2026-10-15. Maturity “inactive” means: no published release in the last 12 months.

Machine-readable

fetch this entry as JSON

curl "https://402mcp.org/api/v1/solutions?id=fewsats-l402&view=full"

or as Markdown

curl -H 'Accept: text/markdown' https://402mcp.org/solutions/fewsats-l402