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Euler Finance Protocol API

Protocol-wide summary endpoints and aggregate metrics. In v3, these endpoints are explicitly summary-oriented and should be treated as lightweight rollups rather than replacements for full vault list payloads.

Euler Finance Protocol API is one of 24 APIs that Euler Finance publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Protocol. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and rate-limit docs.

This API exposes 4 operations across 4 paths, and defines 3 schemas. It is described by OpenAPI 3.1.0, at version 3.0.0.

Requests are made against a single base URL, /.

4 operations 4 paths 3 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
3.0.0
Base URL
https://v3.euler.finance/v3
Authentication
API Key, HTTP Bearer, API Key, API Key, API Key
Resource Areas
1

Authentication & Security 5

Euler Finance Protocol API declares 5 security schemes for authenticating requests. An API key is passed in the header as X-API-Key (ApiKeyAuth). It accepts HTTP bearer tokens (API key) (BearerAuth). An API key is passed in the header as X-Admin-Secret (AdminSecret). An API key is passed in the cookie as euler_platform_session (PlatformSession). An API key is passed in the header as X-CSRF-Token (PlatformCsrf).

  • ApiKeyAuth — API key authentication (optional; higher rate limits).
  • BearerAuth — Alternative to X-API-Key using Authorization: Bearer
  • AdminSecret — Admin secret (server-to-server) for API key management.
  • PlatformSession — Signed, httpOnly platform-operator browser session cookie.
  • PlatformCsrf — Double-submit CSRF token required for unsafe cookie-authenticated methods.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Protocol 4

Protocol-wide summary endpoints and aggregate metrics. In v3, these endpoints are explicitly summary-oriented and should be treated as lightweight rollups rather than replacements…

GET
/v3
Service metadata
getRoot → 200
GET
/v3/openapi.json
OpenAPI document
getOpenapiJson → 200
GET
/v3/docs
Developer documentation UI
getDocs → 200
GET
/v3/protocol/stats
Protocol-wide EVK lending stats across chains
getProtocolStats 1 param → 200400429500

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are ProtocolStats (6 properties), PaginationMeta (6 properties), ErrorResponse (1 property). Each schema is shown below with its type and property counts.

PaginationMeta
object
6 properties 1 required
ProtocolStats
object
EVK lending aggregates across the selected chains, with Earn TVL reported separately.
6 properties
ErrorResponse
object
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

euler-protocol-api-openapi.yml Raw ↑

Other APIs Euler Finance publishes across the network.

Euler Off-Chain Prices API
Euler Subgraphs (GraphQL)
Euler V2 TypeScript SDK
Euler Finance Accounts API
Euler Finance APYs API
Euler Finance Auth API
Euler Finance Chains API
Euler Finance Curator API
Euler Finance Earn API
Euler Finance Entities API
Euler Finance EVC API
Euler Finance FeeFlow API