# ETHGas

**Canonical:** https://apis.io/providers/ethgas/  
**Website:** https://ethgas.com  
**APIs profiled:** 1

ETHGas is an Ethereum blockspace exchange that turns Ethereum blockspace into a tradable commodity, enabling instant transactions through preconfirmations (execution and inclusion preconfs), whole-block commitments, and base-fee futures. Its public developer platform exposes a v1 REST API and a WebSocket streaming API for market data, order placement and management, funding (collateral deposits and withdrawals), and validator/builder registration. Authentication uses an EIP-712 wallet-signature login that issues a short-lived JWT bearer token; public market-data endpoints under /api/v1/p require none. ETHGas runs on Ethereum mainnet with a Hoodi testnet environment, and backs the exchange with a Commit-Boost validator module and a modified rbuilder block builder. ETHGas is backed by Polychain.

## Kin Score — 42.5 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 42.5).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 45.1 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 64.3 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

Regulatory layer — **Securities & Market Data**: 41.7 (matched via weak_tags).

## Agent readiness — 32.5 (agent-aware)

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

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

## APIs (1)

- **ETHGas API** — ETHGas v1 REST + WebSocket API for market data, order placement/management, funding (collateral deposits/withdrawals), and validator/builder operations across whole-block commit...

## MCP servers (1)

- **ETHGas MCP Server**

## Security (2)

- **Ethgas Authentication** — wallet-signature/http-bearer · 2 schemes
- **Ethgas Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Infrastructure, Blockchain, Ethereum, Trading, Preconfirmations, Blockspace, MEV, DeFi, Web3

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