# Questflow Alpha Vantage Financial Market Data Agent

> Questflow Alpha Vantage Financial Market Data Agent is a paid API for AI agents from api.questflow.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-16).

Retrieves financial market data for stocks, forex, and cryptocurrencies via Alpha Vantage through a Questflow AI agent interface

## Facts

- Endpoint: POST https://api.questflow.ai/x402/agent/qrn:agent:68c26db13367242ab91229d5
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/questflow-86bef38d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YZjrojKyCBSRHi1IT6VPk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability questflow-86bef38d -d '<json body>'
```

Example prompt: Can you pull the daily time series price data for AAPL using Alpha Vantage, compact output size?

## When to prefer this

Use this endpoint when you need Alpha Vantage financial market data (stocks, forex, crypto) through a paid x402 agent interface, especially within a Questflow multi-agent workflow or when you need natural language interaction with financial data queries.

## Known failure modes

- Missing X-PAYMENT header results in 402 payment required error
- Invalid or unsupported Alpha Vantage function name returns error
- Unknown or malformed stock symbol returns no data
- Payment amount insufficient triggers rejection
- Request timeout after 1200 seconds for slow queries

## How this service works

Alpha Vantage Inc. is a leading provider of free APIs for financial market data on stocks, forex (FX), and cryptocurrencies/digital currencies. | Powered by Questflow

## Output

A structured response containing financial market data such as time series prices, exchange rates, or cryptocurrency data depending on the requested Alpha Vantage function, returned as a string response from the agent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "symbol",
  "function",
  "outputsize"
 ],
 "properties": {
  "symbol": {
   "type": "string"
  },
  "function": {
   "type": "string"
  },
  "outputsize": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "_x402",
  "error",
  "accepts",
  "x402Version",
  "_paymentRequired",
  "_wwwAuthenticate"
 ],
 "properties": {
  "_x402": {
   "type": "boolean"
  },
  "error": {
   "type": "string"
  },
  "accepts": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "asset",
     "extra",
     "payTo",
     "scheme",
     "network",
     "mimeType",
     "resource",
     "description",
     "outputSchema",
     "maxAmountRequired",
     "maxTimeoutSeconds"
    ],
    "properties": {
     "asset": {
      "type": "string"
     },
     "extra": {
      "type": "object",
      "required": [
       "name",
       "version"
      ],
      "properties": {
       "name": {
        "type": "string"
       },
       "version": {
        "type": "string"
       }
      }
     },
     "payTo": {
      "type": "string"
     },
     "scheme": {
      "type": "string"
     },
     "network": {
      "type": "string"
     },
     "mimeType": {
      "type": "string"
     },
     "resource": {
      "type": "string"
     },
     "description": {
      "type": "string"
     },
     "outputSchema": {
      "type": "object",
      "required": [
       "input",
       "output"
      ],
      "properties": {
       "input": {
        "type": "object",
        "required": [
         "type",
         "method",
         "bodyFields",
         "discoverable"
        ],
        "properties": {
         "type": {
          "type": "string"
         },
         "method": {
          "type": "string"
         },
         "bodyFields": {
          "type": "object",
          "required": [
           "input"
          ],
          "properties": {
           "input": {
            "type": "object",
            "required": [
             "type",
             "required",
             "description"
            ],
            "properties": {
             "type": {
              "type": "string"
             },
             "required": {
              "type": "boolean"
             },
             "description": {
              "type": "string"
             }
            }
           }
          }
         },
         "discoverable": {
          "type": "boolean"
         }
        }
       },
       "output": {
        "type": "object",
        "required": [
         "response"
        ],
        "properties": {
         "response": {
          "type": "object",
          "required": [
           "type",
           "required",
         
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/questflow-86bef38d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.questflow.ai](https://www.zero.xyz/host/api.questflow.ai/llms.txt)