# tZERO

**Canonical:** https://apis.io/providers/tzero/  
**Website:** https://www.tzero.com/  
**APIs profiled:** 3

tZERO Technologies is a US financial-technology company building regulated infrastructure for tokenized real-world assets and digital securities. Through its SEC- and FINRA-regulated broker-dealer, Alternative Trading System (tZERO ATS, continuously operating since 2019), special purpose broker-dealer for digital custody, and SEC-registered transfer agent, tZERO covers the full lifecycle: capital formation and token issuance, secondary trading and market data, clearance and settlement, cap-table recordkeeping, corporate actions, dividends and proxy voting. Its developer surface — marketed as tZERO Connect — publishes two public OpenAPI 3.0.3 contracts (an Issuance & Secondary Markets REST API on gateway-web-api.tzero.com and an Institutional transfer-agent / tokenization / custody API on api.t0direct.com) alongside FIX 4.2 / 4.4 specifications for order entry, drop copy and market data.

## Kin Score — 50.3 / 100 (developing)

Scored 2026-09-02 under rubric 0.18.0. Trend: flat (+0.1 from 50.2).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 55.9 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 58.9 |
| Commercial Clarity | 42.1 |
| Access Clarity | 42.1 |

Regulatory layer — **Securities & Market Data**: 60.0 (matched via tags).

## Agent readiness — 42.6 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | verified |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (3)

- **tZERO Issuance & Secondary Markets API** — REST/JSON API for creating individual broker-dealer accounts, triggering and reviewing KYC on investors, browsing primary offerings and managing investments, linking bank accoun...
- **tZERO Institutional API** — REST/JSON API giving institutional issuers and partners programmatic access to tZERO transfer-agent, tokenization and custody operations: investors and holdings, securities and ...
- **tZERO FIX API** — FIX 4.2 / 4.4 protocol surface for low-latency order entry, drop-copy execution reports, market data (snapshot and incremental refresh, trading session status, security status) ...

## Agentic access (1)

- **Tzero Agentic Access** — 135 operations · 64 acting · 1 human-in-the-loop

## Security (2)

- **Tzero Authentication** — apiKey/http/refreshToken · 4 schemes
- **Tzero Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Tzero Plans Pricing**

## Tags

Company, Digital Securities, Tokenization, Capital Markets, Trading, Alternative Trading System, Transfer Agent, Custody, Blockchain, Financial Services, Securities, Market Data, FIX Protocol

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