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):
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:
curl https://btcfi.aiindigo.com/api/v1/mempool
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
npm run dev
Required environment variables:
UPSTASH_REDIS_REST_URL — Redis connection for cachingUPSTASH_REDIS_REST_TOKEN — Redis auth tokenX402_NETWORK — Payment network (base or solana)X402_FACILITATOR_URL — x402 facilitator endpoint
Documentation
Packages & Distribution
Contributing
We welcome contributions! See CONTRIBUTING.md for guidelines.
License
MIT — Copyright © 2026 AI Indigo
No token. No API keys. Just Bitcoin data. Ship > talk. 🚀