# Capital Markets Gateway

**Canonical:** https://apis.io/providers/capital-markets-gateway/  
**Website:** https://cmgx.io/  
**APIs profiled:** 3

Capital Markets Gateway (CMG) is a New York headquartered financial technology company that connects the buy side and the sell side across the equity capital markets (ECM) offering process. Its two products are CMG XC, a workflow-management platform carrying the full ECM deal lifecycle — offering setup, termsheet publication, a consolidated and de-duplicated order book, bookbuilding, allocations, designations and trade release — and CMG DataLab, an ECM data and analytics service spanning 20+ years and 60,000+ equity transactions across 50+ regions, with 550+ deal, structure and performance metrics per deal. CMG names three programmatic surfaces in its own public FAQs — a DataLab Real-Time Feed (GraphQL API), a CMG XC REST API covering setup through allocation and post-trade, and EventHub real-time event notifications for straight-through processing into OMS and trade-processing systems — but publishes no public API reference, endpoint or machine-readable contract for any of them. The documentation host redirects to a customer identity login.

## Kin Score — 29.8 / 100 (thin)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-1.7 from 31.5).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 45.1 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 34.2 |
| Access Clarity | 34.2 |

Regulatory layer — **Securities & Market Data**: 31.7 (matched via tags).

## Agent readiness — 20.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| 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 | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (3)

- **CMG DataLab Real-Time Feed (GraphQL API)** — Schema-driven GraphQL access to CMG's live and historical ECM dataset. Per CMG's published FAQ the feed lets teams "query specific fields across deals, participants, terms and a...
- **CMG XC REST API** — REST API for the CMG XC workflow platform. Per CMG's published FAQ it provides "systemic support of the full ECM deal lifecycle from setup through allocation and post-trade" and...
- **CMG XC EventHub** — Real-time event notification surface for CMG XC. Per CMG's published FAQ, "real-time event notifications are delivered via EventHub, enabling STP integration with internal trade...

## Security (1)

- **Capital Markets Gateway Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Financial Services, Capital Markets, Equity Capital Markets, Market Data, Data Intelligence, Workflow Management, Investment Banking, Fintech

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