# Espresso

**Canonical:** https://apis.io/providers/espresso/  
**Website:** https://www.espressosys.com/  
**APIs profiled:** 1

Espresso Systems builds the Espresso Network, a high-performance consensus and sequencing layer that gives rollups and institution-grade financial applications real-time settlement (~3 second finality) without sacrificing control, privacy, or connectivity to global onchain liquidity. The network is a permissionless delegated-proof-of-stake system (Mainnet 1.0, live) built on the HotShot BFT consensus protocol and the Tiramisu data-availability layer, confirming transactions for integrated Arbitrum Nitro/Orbit and OP Stack chains. Espresso nodes and query services expose a public, no-auth REST + WebSocket API (built on the Tide Disco framework) across modules for availability, node state, consensus status, catchup, explorer, events streaming, and transaction submission. The API is served on both the Ethereum-mainnet-anchored Mainnet and the Sepolia-anchored Decaf testnet, with content negotiation between JSON and binary and URL-path major versioning (v0 → v1).

## Kin Score — 36.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 36.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 45.1 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 57.1 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| 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 |

## Access

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

## APIs (1)

- **Espresso Network Query Service API** — The public REST and WebSocket API served by Espresso query services and nodes (Tide Disco framework). Comprises independent modules — availability (Tiramisu DA blocks/headers/pa...

## Security (2)

- **Espresso Authentication** — none · 0 schemes
- **Espresso Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Blockchain, Web3, Infrastructure, Consensus, Sequencer, Rollup, Data Availability, Ethereum, DeFi, REST API, Cryptography

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