# TD Ameritrade Holding

**Canonical:** https://apis.io/providers/td-ameritrade-holding/  
**Website:** https://www.tdameritrade.com  
**APIs profiled:** 9

TD Ameritrade Holding Corporation was a brokerage firm that provided online brokerage and related services for individual investors. The company was acquired by Charles Schwab in 2020 and the TD Ameritrade platform was fully migrated to Charles Schwab in May 2024. TD Ameritrade offered a developer API for programmatic access to trading, account management, market data, and order management capabilities. The successor API is now the Charles Schwab Trader API at developer.schwab.com.

## Kin Score — 37.2 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.4 from 36.8).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 63.4 |
| Governance | 28.8 |
| Contract Governance | 28.8 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

Regulatory layer — **Securities & Market Data**: 55.0 (matched via tags).

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (9)

- **TD Ameritrade Holding Accounts API** — Account information, balances, and positions
- **TD Ameritrade Holding Instruments API** — Security and instrument search
- **TD Ameritrade Holding Market Data API** — Quotes, price history, and market hours
- **TD Ameritrade Holding Options API** — Options chains and derivatives
- **TD Ameritrade Holding Orders API** — Order placement, management, and retrieval
- **TD Ameritrade Holding Saved Orders API** — Saved order management
- **TD Ameritrade Holding Transactions API** — Account transaction history
- **TD Ameritrade Holding User Management API** — User preferences and principal data
- **TD Ameritrade Holding Watchlists API** — Watchlist creation and management

## Agentic access (1)

- **Td Ameritrade Holding Agentic Access** — 34 operations · 11 acting

## Security (2)

- **Td Ameritrade Holding Authentication** — oauth2 · 1 scheme
- **Td Ameritrade Holding Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Td Ameritrade Holding Plans Pricing**

## Tags

Finance, Brokerage, Trading, Market Data, Investment, Charles Schwab, Deprecated, Fortune 1000

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/td-ameritrade-holding/). Scores are computed from the provider's own public artifacts under a published rubric.