Surf Onchain API
Query blockchain data directly. Look up transaction details by hash, check gas prices, and run structured or raw SQL queries against indexed blockchain datasets spanning Ethereum, Base, Solana, and more.
Surf Onchain API is one of 16 APIs that Surf publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Onchain. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.
This API exposes 8 operations across 8 paths, and defines 25 schemas. It is described by OpenAPI 3.2.0, at version sha-80d3407.
Requests are made against a single base URL, /.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 3
Surf Onchain API declares
3 security schemes
for authenticating requests.
It accepts HTTP bearer tokens (JWT) (AccessToken).
An API key is passed in the header as X-Admin-Token (AdminToken).
An API key is passed in the header as X-Internal-Key (InternalKey).
Paths & Operations 8
Across 8 paths, the API surfaces 8 operations — 6 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.
Query blockchain data directly. Look up transaction details by hash, check gas prices, and run structured or raw SQL queries against indexed blockchain datasets spanning Ethereum,…
Schemas 25
The contract defines 25 schemas that model the data the API accepts and returns. The most detailed are OnchainTxItem (24 properties), YieldRankingItem (9 properties), OffsetMeta (8 properties), StructuredQuery (7 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Surf 12
Other APIs Surf publishes across the network.
This is an independent, third-party profile of Surf Onchain API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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