Eppo

Eppo is a next-generation feature flagging and experimentation platform built for warehouse-native analytics and rigorous experimentation.

Eppo publishes 5 APIs on the APIs.io network, including Allocations API, Assignments API, Experiments API, and 2 more. Tagged areas include Experimentation, Feature Flags, A/B Testing, Analytics, and Statistics.

Eppo’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.9/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Experimentation Feature Flags A/B Testing Analytics Statistics

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 26.9/100 · thin

Contract Quality 11.9 / 23

Developer Ergonomics 4.3 / 18

Access Clarity 2.4 / 18

Operational Transparency 0.9 / 12

Contract Governance 0.0 / 11

Discoverability 5.3 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/eppo: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

Eppo Cloud REST API

Eppo Cloud REST API provides programmatic access to feature flags, experiments, allocations, metrics, and assignments configuration.

Eppo Allocations API

The Allocations API from Eppo — 1 operation(s) for allocations.

Eppo Assignments API

The Assignments API from Eppo — 1 operation(s) for assignments.

Eppo Experiments API

The Experiments API from Eppo — 2 operation(s) for experiments.

Eppo Flags API

The Flags API from Eppo — 2 operation(s) for flags.

Eppo Metrics API

The Metrics API from Eppo — 1 operation(s) for metrics.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Eppo Cloud REST Allocations API

OPEN COLLECTION

Eppo Cloud REST Allocations Assignments API

OPEN COLLECTION

Eppo Cloud REST Allocations Experiments API

OPEN COLLECTION

Eppo Cloud REST Allocations Flags API

OPEN COLLECTION

Eppo Cloud REST Allocations Metrics API

OPEN COLLECTION

Eppo Cloud REST API

OPEN COLLECTION

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Eppo Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Eppo Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Eppo Finops

FINOPS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Eppo Authentication

apiKey · 1 scheme

SECURITY

Eppo Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Eppo Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Eppo Agentic Access

13 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: eppo
url: https://raw.githubusercontent.com/api-evangelist/eppo/refs/heads/main/apis.yml
name: Eppo
kind: company
description: Eppo is a next-generation feature flagging and experimentation platform built for warehouse-native analytics
  and rigorous experimentation.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/eppo.png
tags:
- Experimentation
- Feature Flags
- A/B Testing
- Analytics
- Statistics
tags_raw:
- Experimentation
- Feature Flags
- AB Testing
- Analytics
- Statistics
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: eppo:eppo-cloud-api
  name: Eppo Cloud REST API
  description: Eppo Cloud REST API provides programmatic access to feature flags, experiments, allocations, metrics, and assignments
    configuration.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Feature Flags
  - Experimentation
  - REST
  properties:
  - type: Documentation
    url: https://eppo.cloud/api/docs
  - type: Developers
    url: https://docs.geteppo.com/
- aid: eppo:eppo-allocations-api
  name: Eppo Allocations API
  description: The Allocations API from Eppo — 1 operation(s) for allocations.
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Allocations
  properties:
  - type: OpenAPI
    url: openapi/eppo-allocations-api-openapi.yml
- aid: eppo:eppo-assignments-api
  name: Eppo Assignments API
  description: The Assignments API from Eppo — 1 operation(s) for assignments.
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Assignments
  properties:
  - type: OpenAPI
    url: openapi/eppo-assignments-api-openapi.yml
- aid: eppo:eppo-experiments-api
  name: Eppo Experiments API
  description: The Experiments API from Eppo — 2 operation(s) for experiments.
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/eppo-experiments-api-openapi.yml
- aid: eppo:eppo-flags-api
  name: Eppo Flags API
  description: The Flags API from Eppo — 2 operation(s) for flags.
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Flags
  properties:
  - type: OpenAPI
    url: openapi/eppo-flags-api-openapi.yml
- aid: eppo:eppo-metrics-api
  name: Eppo Metrics API
  description: The Metrics API from Eppo — 1 operation(s) for metrics.
  humanURL: https://eppo.cloud/api/docs
  baseURL: https://eppo.cloud/api
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/eppo-metrics-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/eppo-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/eppo-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/eppo-domain-security.yml
- type: Authentication
  url: authentication/eppo-authentication.yml
- type: GitHubOrganization
  url: https://github.com/eppo-exp
- type: LinkedIn
  url: https://www.linkedin.com/company/geteppo
- type: Website
  url: https://www.geteppo.com/
- type: Documentation
  url: https://eppo.cloud/api/docs
- type: Plans
  url: plans/eppo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/eppo-rate-limits.yml
- type: FinOps
  url: finops/eppo-finops.yml
- url: https://www.geteppo.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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