AI crypto trading assistant answering market, trading, and blockchain questions via x402 micropayments
What it does
GigaBrain Brain-Chat is a pay-per-request AI endpoint that answers questions about crypto trading, market analysis, and blockchain topics. It accepts a natural-language message and optionally a wallet address for personalized responses. The endpoint supports streaming output.
The service is accessed via the x402 payment protocol on the Base network, charging up to 0.50 USDC per request (maxAmountRequired of 500000 in 6-decimal USDC units). Payments are made to address 0xC82711a2Eef450704447D5596ff27F4DB971e165 using the USDC contract on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
No external documentation, OpenAPI spec, or usage guides are available beyond the x402 challenge itself. The endpoint is live and returns a well-formed 402 challenge with a clear input schema. The input schema specifies a required `message` field (string), an optional `wallet_address` field (string), and an optional `stream` field (boolean). Response format is not documented.
Capabilities
Use cases
- —Ask real-time questions about crypto market conditions and trading strategies
- —Get personalized trading insights by providing your wallet address
- —Stream AI-generated market analysis for integration into trading dashboards
- —Query blockchain concepts and token fundamentals on demand
- —Build agent workflows that pay per crypto-intelligence query
Fit
Best for
- —Developers building crypto trading bots or dashboards that need on-demand market intelligence
- —AI agents that need pay-per-use crypto analysis without subscriptions
- —Users wanting quick, conversational answers about blockchain and trading topics
Not for
- —Non-crypto general-purpose LLM chat — this is specialized for crypto/trading
- —Users who need guaranteed financial advice (this is an AI assistant, not a licensed advisor)
- —High-volume batch analytics where per-request USDC costs would accumulate quickly
Quick start
curl -X POST https://api.gigabrain.gg/brain-chat \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"message": "What is the current sentiment on ETH?", "stream": false}'Example
Request
{
"stream": false,
"message": "What is the current sentiment on ETH?",
"wallet_address": "0xYourWalletAddress"
}Endpoint
Quality
The endpoint is live with a well-structured x402 challenge and clear input schema, but there is no documentation, no OpenAPI spec, no example responses, and no crawlable content beyond 'Hello World!' at the root. Response format is entirely unknown and had to be omitted.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README all return 404
- —Response schema is undocumented; the output format is unknown
- —Financial/trading domain — responses should not be treated as licensed financial advice
- —Pricing inferred solely from x402 challenge maxAmountRequired field (up to 0.50 USDC per request)
Citations
- —Endpoint is live and returns a 402 challenge with x402Version 1 on POSThttps://api.gigabrain.gg/brain-chat
- —Payment is in USDC on Base network, maxAmountRequired 500000 (0.50 USDC)https://api.gigabrain.gg/brain-chat
- —Input schema requires 'message' field, optionally accepts 'wallet_address' and 'stream'https://api.gigabrain.gg/brain-chat
- —Pay-to address is 0xC82711a2Eef450704447D5596ff27F4DB971e165https://api.gigabrain.gg/brain-chat
- —Root page returns 200 with 'Hello World!' — no substantive documentationhttps://api.gigabrain.gg