Docs
Documentation
Everything you need to build on Contrabxnd — the Bitcoin intelligence platform running on a sovereign node.
Contrabxnd exposes its intelligence and on-chain data through a machine-readable MCP server, a public API, and a set of node-powered tools. Everything below is served from FML's own Bitcoin node — block, transaction, and address data are sovereign, with automatic fallback for resilience.
What's here
- Quickstart — get an API key and make your first call.
- MCP Server — connect any AI client to live data and node tools.
- Tool Reference — every MCP tool, grouped by capability.
- Indexer & Explorer — query the chain through the Contrabxnd node.
- Lightning & L402 — invoices, node info, and micropayment paywalls.
- Agent Registry — discovery, credit, and verifiable predictions.
Principles
Sovereign by default. On-chain reads come from our node, not a third-party aggregator. Composable. Every signal is available as an MCP tool and an API endpoint. Pay-per-use where it counts. Premium data can be gated behind Lightning micropayments via L402.