# Long-Term Stock Exchange

**Canonical:** https://apis.io/providers/long-term-stock-exchange/  
**Website:** https://ltse.com  
**APIs profiled:** 0

The Long-Term Stock Exchange (LTSE) is a U.S. Securities and Exchange Commission-registered national securities exchange headquartered in New York, built to support companies and investors committed to long-term value creation. LTSE operates a principles-based equities trading platform that accepts order entry over the MEMO FIX and MEMO SBE (Simple Binary Encoding) protocols and distributes real-time market data - depth of book, top of book, and last sale - via the MEMOIR multicast feed. Beyond the exchange it offers private-markets and cap-table software plus long-term listing standards. LTSE does not publish a public REST/OpenAPI developer API; participant connectivity (Direct, Extranet, Telco via NY4) and technical specifications are provided through its Market Operations team.

## Kin Score — 12.9 / 100 (emerging)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 12.9).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

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)

- **Long Term Stock Exchange Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Stock Exchange, Capital Markets, Financial-Services, Market Data, Trading, Securities, FIX Protocol

---

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