Neutron

• Name: Neutron
• URL: https://neutron.me/
• Category: Bitcoin and Lightning infrastructure / multi-rail payments API / AI-agent payments control plane
• Tags: bitcoin-ecosystem
• Summary: Neutron is a multi-rail money-movement API that happens to lead with Bitcoin, Lightning, and agent branding. The real surface is payins, payouts, swaps, webhooks, and dashboard policy across BTC, USDT, and fiat. Useful operator stack, not a rail.
• What it does:
  • Provides API and SDK access for Lightning invoice creation, Lightning Address payments, LNURL-style flows, and general send/receive Bitcoin over Lightning
  • Supports onchain Bitcoin flows alongside internal conversions and transfers across BTC, USDT, and fiat balances
  • Supports stablecoin operations, with the SDK specifically documenting USDT on TRON and Ethereum
  • Supports fiat payouts through bank-transfer and local payout methods, with the docs explicitly mentioning local bank accounts and mobile-money systems in selected countries
  • Exposes operational surfaces such as dashboard-managed API keys, webhook management, exchange-rate access, transaction confirmation flows, and wallet/deposit-address retrieval
  • Markets MCP access and AI-agent-specific product positioning alongside a separate self-custodial consumer wallet surface
• Key claims:
  • The main site brands Neutron as “Bitcoin & Lightning Infrastructure for AI Agents” and lists API and SDK access, a developer dashboard, and MCP access as core product features
  • The site’s pricing/features content also describes multi-currency support across 30-plus fiat currencies, suggesting a broader payments-control-plane posture than a single-rail Lightning API
  • The for-humans wallet page says Neutron never holds the user’s funds, describes the wallet as self-custodial, and claims support for borderless usage plus BTC, USDT, and 30-plus fiat currencies
  • The official SDK README describes Neutron as a single API for Bitcoin Lightning, stablecoins, and fiat payments, and organizes the platform into resources for accounts, transactions, Lightning, webhooks, exchange rates, and fiat payouts
  • The SDK examples explicitly cover Lightning invoices, Lightning Address payments, onchain BTC sends, BTC-to-USDT conversion, deposit-address retrieval, webhook verification, and fiat payout flows
  • The SDK key-concepts section says KYC is required only for fiat payouts, while Bitcoin, stablecoin, and swap flows do not require KYC in the documented flow
  • The API docs’ fiat-out page says Neutron supports sending fiat payouts to local bank accounts or mobile-money systems in selected countries
• Whitepaper: No canonical standalone Neutron whitepaper or litepaper surfaced in this pass. The clearest current source of truth was the Neutron site, the wallet/product pages, the SDK README, and the public API docs snippets; see ../whitepapers/neutron-primary-sources-2026-05-02.md.
• Sources:
  • https://neutron.me/
  • https://neutron.me/for-humans
  • https://docs.neutron.me/
  • https://docs.neutron.me/reference/overview
  • https://docs.neutron.me/reference/fiat-out
  • https://github.com/Neutronpay/neutron-sdk
  • https://raw.githubusercontent.com/Neutronpay/neutron-sdk/main/README.md

Internal linkages

• Best upward reads: blink for the Bitcoin-and-Lightning wallet stack and bridge-xyz for the hosted stablecoin-and-bank payout operator shell.

Control surface

• Power sits in API-key issuance, webhook truth, route choice between BTC, USDT, and fiat payouts, conversion defaults, and where Neutron draws the compliance boundary around fiat-out.

• The interesting part is multi-rail operator packaging. The AI-agent pitch is distribution on top of that.

• Last reviewed: 2026-06-05 UTC