# D3

**Canonical:** https://apis.io/providers/d3/  
**Website:** https://d3.com  
**APIs profiled:** 2

D3 is a crypto-infrastructure company building the internet's domain layer, tokenized. Through its Doma Protocol, D3 brings ICANN domain names on-chain as tokenized name assets and unlocks "DomainFi" — programmable DNS, fractionalized domain tokens, an on-chain marketplace, and agentic commerce. Developers use the Doma API (a GraphQL subgraph plus REST Poll and Orderbook APIs), the doma CLI, and portable Agent Skills to register, tokenize, trade, and manage domains across the Doma mainnet (chain 97477) and testnet (97476). D3 is backed by Paradigm.

## Kin Score — 43.2 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 43.2).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 56.6 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 76.2 |
| Commercial Clarity | 13.2 |
| Access Clarity | 13.2 |

## Agent readiness — 40.5 (agent-ready)

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

## Access

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

## APIs (2)

- **D3 Events Poll API API** — The Events Poll API API from D3 — 3 operation(s) for events poll api.
- **D3 Orderbook API API** — The Orderbook API API from D3 — 11 operation(s) for orderbook api.

## MCP servers (1)

- **D3 MCP Server**

## Security (2)

- **D3 Authentication** — apiKey · 1 scheme
- **D3 Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Crypto Infrastructure, Domains, DNS, Blockchain, Tokenization, Web3, DomainFi, Marketplace, Agentic Commerce

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/d3/). Scores are computed from the provider's own public artifacts under a published rubric.