# IEX

**Canonical:** https://apis.io/providers/iex/  
**Website:** https://www.iex.io/  
**APIs profiled:** 0

IEX Group, Inc. operates IEX Exchange, a U.S. national securities exchange for equities founded to make trading fairer and more transparent, along with IEX Options (coming soon). IEX is known for its Speed Bump, the IEX Signal, and the D-Limit order type. Its developer- and data-facing surface is market data and connectivity rather than a public REST API: real-time depth-of-book and top-of-book feeds (DEEP+, DEEP, and TOPS, plus their SNAP variants) are distributed over the binary IEX Transport Protocol (IEX-TP v1), with published feed specifications, downloadable historical PCAP samples, and market statistics. Data access is arranged through a Data Subscriber Agreement and direct or third-party connectivity. Sector: fintech / financial markets infrastructure. Backed by Bain Capital Ventures, ICONIQ Capital, IVP, and Sapphire Ventures.

## Kin Score — 17.4 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 17.4).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 15.8 |
| Developer Ergonomics | 19.0 |
| Commercial Clarity | 38.2 |
| Access Clarity | 38.2 |

Regulatory layer — **Securities & Market Data**: 23.3 (matched via tags).

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Iex Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Fintech, Stock Exchange, Market Data, Trading, Equities, Options, Financial-Services, Market Infrastructure

---

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