AI-powered crypto trading signal with conviction score and LLM explanation per coin symbol.
What it does
CryptoBuddy is an x402-payable endpoint that returns AI-generated trading signals for cryptocurrency tokens. You send a coin symbol (e.g. BTC, ETH, SOL) via a POST request with a query parameter, and the service responds with a structured JSON object containing the signal direction, a conviction score, separate buy and sell scores, and a natural-language explanation generated by an LLM.
The endpoint is hosted on Render and accepts payment on the Base network in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 500,000 units (0.50 USDC given 6-decimal USDC). The x402 challenge is live and well-formed, returning a version-1 challenge with a full output schema.
Documentation is minimal — there is no OpenAPI spec, no /docs page, and no README available. All schema information is derived from the x402 challenge's outputSchema. The service self-describes as providing "AI-powered trading signals, market insight, and predictive analysis," but only the /signal endpoint is documented in the challenge. Users should be aware this is a Render-hosted free-tier-style deployment, which may experience cold-start latency.
Capabilities
Use cases
- —AI agent autonomously checking whether to buy or sell a specific cryptocurrency
- —Building a dashboard that aggregates trading signals across multiple coins
- —Automated trading bot that consumes conviction-scored signals before executing trades
- —Research tool that collects LLM-generated market explanations for portfolio review
Fit
Best for
- —AI agents needing a single-call crypto signal with structured output
- —Developers prototyping crypto trading bots with LLM-backed reasoning
- —Quick per-coin buy/sell conviction checks without managing API keys
Not for
- —High-frequency trading requiring sub-second latency (Render cold starts possible)
- —Historical backtesting — endpoint returns a single point-in-time signal
- —Users needing signals for non-crypto assets like equities or forex
Quick start
curl -X POST "https://cryptobuddy-96zq.onrender.com/signal?symbol=BTC" \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Example
Request
{
"url": "https://cryptobuddy-96zq.onrender.com/signal?symbol=ETH",
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-header>",
"Content-Type": "application/json"
}
}Response
{
"signal": "BUY",
"symbol": "ETH",
"buyScore": 0.85,
"sellScore": 0.15,
"timestamp": "2025-01-15T12:34:56Z",
"conviction": 0.82,
"explanation": "ETH is showing strong momentum with increasing on-chain activity and positive sentiment across major social channels. RSI is recovering from oversold territory, and the 50-day moving average is trending upward, suggesting a favorable entry point."
}Endpoint
Quality
The x402 challenge is live and includes a well-structured outputSchema with input/output definitions, which is the primary source of all technical detail. However, there is no OpenAPI spec, no documentation pages, no usage examples from the provider, and no additional endpoints are discoverable. Pricing is inferrable from the challenge but not explicitly documented. The response schema fields are inferred from the challenge, and the example response is fabricated to match the schema.
Warnings
- —No documentation available — /docs, /api, /README, /pricing all return 404
- —Output schema and pricing are inferred entirely from the x402 challenge; no independent docs confirm behavior
- —Hosted on Render free-tier-style URL; may experience cold-start delays
- —Example response is synthetic — no actual paid response was captured
- —This provides financial trading signals — not investment advice; use at your own risk
Citations
- —Service self-describes as 'AI-powered trading signals, market insight, and predictive analysis'https://cryptobuddy-96zq.onrender.com
- —x402 challenge is live with version 1, accepting USDC on Base network with maxAmountRequired of 500000https://cryptobuddy-96zq.onrender.com/signal
- —Payment address is 0x58Be3eB5c86dAcfC6ac71FaD3aAd8A7D07EEB391 and asset is USDC at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://cryptobuddy-96zq.onrender.com/signal
- —Input requires a 'symbol' query parameter of type stringhttps://cryptobuddy-96zq.onrender.com/signal
- —Output schema includes symbol, timestamp, signal, conviction, buyScore, sellScore, and explanation fieldshttps://cryptobuddy-96zq.onrender.com/signal