Query Alpha Vantage financial market data (stocks, forex, crypto) via an x402-paid AI agent on Questflow.
What it does
This endpoint exposes an AI agent hosted on Questflow that wraps Alpha Vantage's financial market data APIs. Alpha Vantage provides data on stocks, foreign exchange (FX), and cryptocurrencies. The agent accepts a natural-language text prompt via a POST request and returns a string response, presumably containing the requested financial data or analysis.
Payment is handled through the x402 protocol on the Base network using USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per request is 100,000 units (likely 0.10 USDC given 6-decimal USDC), with a maximum timeout of 1,200 seconds. The agent is discoverable and accepts a single required field — `input` (a string message to the agent) — and returns a `response` string.
Documentation is minimal. There is no OpenAPI spec, no dedicated docs page, and no examples of actual responses. The Questflow platform itself is focused on autonomous AI trading clones that aggregate multiple onchain markets, but this specific endpoint appears to be a standalone Alpha Vantage data agent rather than a trading bot. Because there is no sample output or detailed capability list, callers should experiment with prompts to determine what data the agent can retrieve (e.g., stock quotes, time series, forex rates, crypto prices).
Capabilities
Use cases
- —Retrieve real-time or historical stock price data by asking in natural language
- —Query foreign exchange rates between currency pairs
- —Look up cryptocurrency/digital currency market data
- —Integrate financial market data into an autonomous agent pipeline via x402 micropayments
Fit
Best for
- —Agents that need on-demand financial market data without managing API keys directly
- —x402-native workflows requiring pay-per-query stock, forex, or crypto data
- —Prototyping natural-language financial data retrieval
Not for
- —High-frequency trading requiring sub-second latency (1200s max timeout)
- —Use cases needing structured, schema-guaranteed JSON responses (output is a free-form string)
- —Users who need detailed documentation or SLA guarantees before integration
Quick start
curl -X POST https://api.questflow.ai/x402/agent/qrn:agent:68c26db13367242ab91229d5 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>" \
-d '{"input": "What is the current price of AAPL?"}'Example
Request
{
"input": "Get the daily time series for MSFT for the last 5 days"
}Response
{
"response": "Here are the last 5 daily closing prices for MSFT: 2025-07-14: $460.12, 2025-07-11: $458.30, 2025-07-10: $455.67, 2025-07-09: $452.10, 2025-07-08: $449.88."
}Endpoint
Quality
The x402 challenge provides basic input/output schema and payment details, but there is no OpenAPI spec, no documentation, no real response examples, and no information about which Alpha Vantage endpoints or data types are actually supported. The example response above is entirely inferred.
Warnings
- —No OpenAPI spec or dedicated documentation available
- —Output schema is a free-form string with no structured guarantees
- —Example response is fabricated/inferred — no real sample was available
- —No information on rate limits, supported Alpha Vantage functions, or data freshness
- —Maximum timeout of 1200 seconds suggests potentially slow responses
- —Pricing details (maxAmountRequired 100000 in USDC 6-decimal = 0.10 USDC) is inferred from token decimals
Citations
- —Alpha Vantage Inc. is described as a leading provider of free APIs for financial market data on stocks, forex (FX), and cryptocurrencies/digital currencies.https://api.questflow.ai/x402/agent/qrn:agent:68c26db13367242ab91229d5
- —Payment is via x402 on Base network using USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with maxAmountRequired of 100000 and maxTimeoutSeconds of 1200.https://api.questflow.ai/x402/agent/qrn:agent:68c26db13367242ab91229d5
- —The input schema requires a single string field 'input' and returns a string 'response'.https://api.questflow.ai/x402/agent/qrn:agent:68c26db13367242ab91229d5
- —Questflow is a platform for AI clones that aggregate onchain markets including Polymarket, Pump.fun, OKX, and Opinion Labs.https://api.questflow.ai