Market data API
Quotes, trades, bars, order books, reference data, corporate actions, and historical datasets.
TRADER API
Trader API Directory
A structured directory for evaluating market-data, brokerage, exchange, charting, prediction-market, and AI trading interfaces.
Developer overview
What this API category covers
A Trader API connects software to financial or event-market data and, in some cases, account and order workflows. The phrase covers very different systems: public market-data feeds, authenticated brokerage interfaces, exchange order books, charting components, portfolio services, and supervised AI tools. Start with the application responsibility before comparing providers.
Do not choose an interface from a marketing checklist alone. Verify schemas, units, timestamps, permissions, failure behavior, testing conditions, and data-use terms for the exact product and account. A production integration should be able to recover authoritative state after a disconnect without guessing.
Capability map
Core integration responsibilities
Use these responsibilities to define architecture, acceptance tests, and provider evidence.
Brokerage API
Account state, positions, balances, orders, fills, and administrative workflows.
Exchange API
Market discovery, streaming data, order submission, and venue-specific state.
Charting API
Visualization-ready series, technical indicators, annotations, and real-time updates.
Prediction markets API
Events, questions, outcomes, contract rules, order books, and settlement states.
AI Trader LLM API
Bounded tools that connect models to research, portfolio context, policy checks, and approval workflows.
Implementation
Production checklist
- Define the exact workflow and asset class.
- Separate market-data needs from execution needs.
- Verify authentication scopes and credential controls.
- Test streaming recovery and authoritative state rebuilding.
- Confirm symbols, numeric units, timestamps, and sessions.
- Model all order states, including uncertain submissions.
- Review sandbox differences, data rights, and total cost.
- Document evidence and unknowns in a weighted scorecard.
Conceptual adapter
const adapter = {
instruments: "provider identifiers",
timestamps: "UTC + source context",
numbers: "exact decimals",
streaming: "snapshot + recovery",
orders: "idempotent state machine",
credentials: "server-side only",
evidence: "docs + tests + logs"
};
Related research
Continue evaluating
How to Compare Trader APIs
A weighted evaluation framework for workflow fit, data, execution, security, recovery, and cost.
Read guide →Secure Trading API Keys
Server-side credential patterns, least privilege, rotation, monitoring, and incident response.
Read guide →FAQ
Trader API Directory questions
What is a Trader API?
A Trader API is a software interface for market data, account information, trading workflows, charting, analytics, or related automation. Capabilities and permissions vary by provider.
Does every Trader API support order execution?
No. Some APIs provide data or charting only. Execution access may require a specific account, agreement, permission, region, or product.
Should one provider supply data and execution?
Not necessarily. A modular system can use separate providers when symbol mapping, timestamps, licensing, and reconciliation are handled explicitly.
How should a team compare APIs?
Define the workflow, build a weighted scorecard, test failure cases in an appropriate environment, and require evidence for every material capability.