Give a custom agent market data

Desk seat: Research, Price Map / Technicals

The problem

Chat assistants guess numbers when they lack data.

What the agent does

Connects a market-data API as a tool so agents use real numbers.

Copy-paste prompt

Write a small Python function tool that fetches [daily prices/fundamentals] from [Alpha Vantage/Tiingo/FMP] for a ticker, with error handling and rate limiting, for use in the [OpenAI Agents SDK/LangGraph]. Read-only, no trading. Do not give buy/sell/hold advice or price targets; label facts vs. inferences and cite sources.

Works with

ChatGPT, Claude, or any similar assistant.

Linked tools

Alpha Vantage: Free market-data API for DIY agents
Tiingo: Affordable end-of-day and news data API
Financial Modeling Prep: Fundamentals and statements API
OpenAI Agents SDK: Lightweight hand-offs between agents in Python

Linked roles

Data Checker

Limitations

Free tiers have rate limits; data quality varies. AI can be wrong, so verify before relying on any output.

Source

Alpha Vantage

Educational only. Not financial advice. The Agentic Trader teaches how to organize AI agents around your own research and review process. Nothing here is a recommendation to buy, sell, or hold any security or asset. We do not endorse any broker, platform, or asset. AI output can be wrong, so verify everything and make your own decisions. Trading and investing involve risk of loss.