BTCFi API

Bitcoin data for AI agents. 27 tools with x402 micropayments. No API keys needed.

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @aiindigo/btcfi-mcp

Claude Code

claude mcp add btcfi-api -e 'SVM_PRIVATE_KEY=<your svm_private_key>' -- npx -y @aiindigo/btcfi-mcp@3.0.1

JSON configuration (Claude Desktop, Cursor, VS Code)

{
    "mcpServers": {
        "btcfi-api": {
            "command": "npx",
            "args": [
                "-y",
                "@aiindigo/btcfi-mcp@3.0.1"
            ],
            "env": {
                "SVM_PRIVATE_KEY": "<your svm_private_key>"
            }
        }
    }
}

Environment variables

SVM_PRIVATE_KEY secret Solana private key for x402 payments (optional, Base payments work without)

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents

BTCFi API
Free Tier
Quick Start
API Reference
Pricing
Authentication
Free for Humans
Security
Self-Hosted
Documentation
Packages & Distribution
Contributing
License

BTCFi API

Bitcoin Intelligence API for AI Agents

Live at btcfi.aiindigo.com · Built by AI Indigo · GitHub

BTCFi API is an agent-native Bitcoin intelligence platform providing 80+ endpoints across Bitcoin, Ethereum, Solana, Lightning Network, Runes, and Taproot Assets. Powered by x402 micropayments — pay $0.01–$0.05 per query in USDC, no API keys or subscriptions required. CoinGecko integration provides multi-currency pricing (38 fiat currencies). AI agents discover endpoints at /llms.txt and integrate via MCP, SDK, or raw HTTP.

Free Tier

100 calls/day per IP — no signup, no API keys, just make a request:

curl https://btcfi.aiindigo.com/api/v1/fees

{
  "fastest": 12,
  "30min": 8,
  "1hr": 5,
  "economy": 3,
  "fastestUSD": "$2.40",
  "recommended": "8 sat/vB"
}

Quick Start

AI Agents (MCP):

npx @aiindigo/btcfi-mcp

SDK:

npm install @aiindigo/btcfi

import { BTCFi } from "@aiindigo/btcfi";

const btcfi = new BTCFi({ network: "base" });
const fees = await btcfi.fees();
const risk = await btcfi.intelligence.risk("bc1q...");

Raw HTTP:

# Free endpoint — no auth needed
curl https://btcfi.aiindigo.com/api/v1/mempool

# Paid endpoint — requires x402 micropayment
curl -X GET https://btcfi.aiindigo.com/api/v1/intelligence/whales \
  -H "X-Payment: <x402-payment-proof>"

OpenAPI Spec:

https://btcfi.aiindigo.com/openapi.json

API Reference

Core Bitcoin Endpoints

Endpoint	Description	Price
`GET /api/v1/fees`	Fee estimates (fastest, 30min, 1hr, economy) with USD values	$0.01
`GET /api/v1/mempool`	Mempool summary, tx count, size, fee histogram	$0.01
`GET /api/v1/address/{addr}`	Address balance, tx count, funded/spent stats	$0.01
`GET /api/v1/address/{addr}/utxos`	Unspent transaction outputs	$0.01
`GET /api/v1/address/{addr}/txs`	Transaction history	$0.01
`GET /api/v1/tx/{txid}`	Full transaction details	$0.01
`GET /api/v1/tx/{txid}/status`	Confirmation status	$0.01
`POST /api/v1/tx/broadcast`	Broadcast signed transaction	$0.05
`GET /api/v1/block/latest`	Latest blocks with details	$0.01
`GET /api/v1/block/{id}`	Block by height or hash	$0.01

Intelligence Endpoints

Endpoint	Description	Price
`GET /api/v1/intelligence/fees`	AI fee prediction (1h, 6h, 24h windows)	$0.02
`GET /api/v1/intelligence/whales`	Large transaction detection	$0.02
`GET /api/v1/intelligence/risk/{addr}`	Address risk scoring	$0.02
`GET /api/v1/intelligence/network`	Hashrate, difficulty, congestion	$0.02
`GET /api/v1/intelligence/consolidate/{addr}`	UTXO consolidation advice	$0.02
`GET /api/v1/intelligence/mvrv`	MVRV ratio	$0.02
`GET /api/v1/intelligence/sopr`	SOPR (Spent Output Profit Ratio)	$0.02
`GET /api/v1/intelligence/nupl`	NUPL (Net Unrealized Profit/Loss)	$0.02
`GET /api/v1/intelligence/hodl-waves`	HODL wave distribution	$0.02

Security Endpoints

Endpoint	Description	Price
`GET /api/v1/security/threat/{addr}`	YARA-pattern threat analysis (8 patterns)	$0.02

ZK Proof Endpoints

Endpoint	Description	Price
`POST /api/v1/zk/balance-proof`	Prove balance ≥ threshold	$0.03
`POST /api/v1/zk/age-proof`	Prove UTXO age ≥ N blocks	$0.03
`POST /api/v1/zk/membership`	Prove set membership	$0.03
`POST /api/v1/zk/verify`	Verify any ZK proof	$0.01

Solv Protocol Endpoints

Endpoint	Description	Price
`GET /api/v1/solv/reserves`	SolvBTC supply, backing ratio, TVL	$0.02
`GET /api/v1/solv/yield`	xSolvBTC APY, yield strategies	$0.02
`GET /api/v1/solv/liquidity`	Cross-chain SolvBTC distribution	$0.02
`GET /api/v1/solv/risk`	Multi-factor risk assessment	$0.02

Cross-Chain Endpoints

Ethereum ($0.01):

Endpoint	Description
`GET /api/v1/eth/gas`	ETH gas prices
`GET /api/v1/eth/address/{addr}`	ETH address balance
`GET /api/v1/eth/tx/{hash}`	ETH transaction details

Solana ($0.01):

Endpoint	Description
`GET /api/v1/sol/fees`	SOL priority fees
`GET /api/v1/sol/address/{addr}`	SOL address balance

Runes Endpoints

Endpoint	Description	Price
`GET /api/v1/runes`	List all Bitcoin Runes tokens	$0.02
`GET /api/v1/runes/trending`	Trending Runes by 24h activity	$0.02
`GET /api/v1/runes/{ticker}`	Runes token details	$0.02
`GET /api/v1/runes/{ticker}/holders`	Holder distribution	$0.02
`GET /api/v1/runes/{ticker}/transfers`	Recent transfers	$0.02

Taproot Assets Endpoints

Endpoint	Description	Price
`GET /api/v1/taproot/assets/{addr}`	Taproot Assets held by address	$0.02
`GET /api/v1/taproot/assets/{addr}/{assetId}`	Taproot Asset details	$0.02

Lightning Network Endpoints

Endpoint	Description	Price
`GET /api/v1/lightning/node/{pubkey}`	Lightning node info	$0.02
`GET /api/v1/lightning/channels/{chanId}`	Channel details	$0.02
`GET /api/v1/lightning/routing-fee`	Routing fee estimate	$0.02
`GET /api/v1/intelligence/lightning`	Lightning network intelligence	$0.02

Portfolio Endpoints

Endpoint	Description	Price
`GET /api/v1/portfolio`	List portfolios	$0.01
`GET /api/v1/portfolio/{userId}`	Get user portfolio	$0.01
`GET /api/v1/portfolio/{userId}/analytics`	Portfolio analytics	$0.02
`GET /api/v1/intelligence/portfolio/{addr}`	Address portfolio analysis	$0.02

Alerts Endpoints

Endpoint	Description	Price
`GET /api/v1/alerts`	List alert rules	Free
`GET /api/v1/alerts/rules`	Manage alert rules	Free
`DELETE /api/v1/alerts/rules/{id}`	Delete alert rule	Free
`GET /api/v1/alerts/history`	Alert trigger history	Free
`POST /api/v1/alerts/evaluate`	Evaluate alert conditions	Free

Price Endpoints

Endpoint	Description	Price
`GET /api/v1/price`	BTC price (CoinGecko: 38 fiat currencies)	Free

Real-Time Streams

Endpoint	Description	Price
`GET /api/v1/stream`	SSE: new blocks, fee changes, mempool surges	$0.01
`GET /api/v1/stream/whales`	SSE: whale transaction alerts (`?min=100` BTC)	$0.01

Agent Integration

Endpoint	Description	Price
`GET /api/mcp`	MCP server info and tools	Free
`GET /llms.txt`	AI agent discovery file	Free
`GET /api/v1/agent-skills`	Agent skill registry	Free

System Endpoints

Endpoint	Description	Price
`GET /api/health`	System health check	Free
`GET /api/v1/staking/status`	Staking tier and rate limit status	Free

Pricing

Category	Price (USDC)
Core Bitcoin (fees, mempool, address, tx, block)	$0.01
Intelligence (whales, risk, MVRV, SOPR, NUPL, HODL waves, cluster, graph)	$0.02
Security (threat analysis)	$0.02
Solv Protocol (reserves, yield, liquidity, risk)	$0.02
Runes (tokens, holders, transfers, trending)	$0.02
Taproot Assets (asset list, asset details)	$0.02
Lightning Network (nodes, channels, routing fees)	$0.02
Portfolio (addresses, analytics)	$0.01–$0.02
ZK Proofs (balance, age, membership)	$0.03
Transaction broadcast	$0.05
Ethereum / Solana	$0.01
Streams (SSE)	$0.01
Price (CoinGecko multi-currency)	Free
Alerts (rules, history, evaluate)	Free
System (health, status)	Free
Agent Discovery (/llms.txt, /api/mcp)	Free

Free Tier: 100 calls/day per IP, no signup required.

Authentication

BTCFi API uses x402 micropayments — no API keys, no OAuth, no subscriptions.

Free endpoints — No authentication. Just make a request.
Paid endpoints — Include an X-Payment header with a USDC micropayment proof.
Payment networks:
- Base (EVM L2) — Coinbase facilitator, zero fees, ERC-3009
- Solana — NLx402 by PCEF (nonprofit), zero fees

Request signing (optional, for higher rate limits):

Wallet-based signing with Ed25519 (Solana) or secp256k1 (EVM)
Headers: X-Signature, X-Nonce, X-Signer, X-Timestamp

Free for Humans

Completely free — no signup, no API keys, no secrets. This is a PUBLIC repository. Just open Telegram:

@BTC_Fi_Bot — 38 commands + inline mode: /start /help /price /whale /fear /hash /mempool /halving /etf /funding /dominance /mining /lightning /signal /l2 /block /mvrv /sopr /nupl /entity /portfolio /staking /threat /eth_addr /sol_addr /digest /alerts /watch /unwatch /watchlist /runes /ordinals /taproot /cluster /graph /batch /webhooks /premium
@BTCFi_Whales — Real-time whale transaction alerts, auto-posted every 15 min
Web Dashboard — Live BTC price, fees, mempool, address lookup, whale watch

Security

Wallet-based request signing (Ed25519 + secp256k1)
Encrypted responses (Curve25519 + XSalsa20-Poly1305)
Zero-knowledge proofs (Groth16)
8 YARA-style threat detection patterns
Nonce replay protection
PEAC Protocol cryptographic receipts
Tiered rate limiting (free: 100/min, signed: 500/min, paid: unlimited)
NPM supply chain policy: 7-day cooling period, npq guard, lockfile validation

Report vulnerabilities: security@aiindigo.com

Self-Hosted

Run the API locally for development or private deployment:

git clone https://github.com/aiindigo925/btcfi-api.git
cd btcfi-api
npm install
cp .env.example .env    # Configure environment variables
npm run dev              # Start on port 3001

Required environment variables:

UPSTASH_REDIS_REST_URL — Redis connection for caching
UPSTASH_REDIS_REST_TOKEN — Redis auth token
X402_NETWORK — Payment network (base or solana)
X402_FACILITATOR_URL — x402 facilitator endpoint

Documentation

Doc	Description
docs/ROADMAP.md	Project history and future plans
docs/ARCHITECTURE.md	System design and endpoint reference
docs/SECURITY.md	Security model and features
docs/CHANGELOG.md	Version history
NPM-SUPPLY-CHAIN-POLICY.md	Supply chain security policy

Packages & Distribution

Package	Description
`@aiindigo/btcfi`	TypeScript SDK — 28 methods
`@aiindigo/btcfi-mcp`	MCP Server — 45 tools for Claude, ChatGPT, Gemini
MCP Registry	`io.github.aiindigo925/btcfi`
Glama	Indexed — searchable MCP directory
@BTC_Fi_Bot	Telegram bot — 28 commands + inline mode

Contributing

We welcome contributions! See CONTRIBUTING.md for guidelines.

License

No token. No API keys. Just Bitcoin data. Ship > talk. 🚀

Frequently asked questions

What is BTCFi API?

Bitcoin data for AI agents. 27 tools with x402 micropayments. No API keys needed.

How do I install BTCFi API?

It runs on your machine. In Claude Code: claude mcp add btcfi-api -e 'SVM_PRIVATE_KEY=<your svm_private_key>' -- npx -y @aiindigo/btcfi-mcp@3.0.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does BTCFi API need an API key?

Yes. It expects SVM_PRIVATE_KEY, which you set in its configuration.

Is BTCFi API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains BTCFi API?

It is published by aiindigo925. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.

Server details

Listed in: Official MCP Registry
Publisher: aiindigo925
Category: AI and agents
Runs: Local
GitHub stars: ★ 0
License: MIT
Language: TypeScript
Last commit: Sep 25, 2026
Open issues: 1
Version: 3.0.1
Published: Feb 11, 2026

io.github.aiindigo925/btcfi

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