Evolv

Evolv AI (formerly Sentient Ascend) is an experience optimization and autonomous experimentation platform that continuously tests and personalizes digital experiences using machine learning. Its Participant API and official client SDKs for JavaScript, iOS, Android, PHP and React allocate visitors to experiment variants, deliver optimized configurations, and ingest behavioral events so AI-driven optimization can evolve web and app experiences without manual A/B-test management. Enterprises use Evolv AI to automate conversion-rate optimization and personalization across their digital properties.

Evolv is listed with 1 API on the APIs.io network: Participant API. Tagged areas include Experimentation, Optimization, Personalization, A/B Testing, and Machine Learning.

Evolv’s developer surface includes documentation, CLI, authentication, sandbox, changelog, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.4/100 thin ▬ flat Agent 10/100 agent aware Heartbeat 18/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessApproval

1 API 3 Agent Skills

Experimentation Optimization Personalization A/B Testing Machine Learning Conversion Rate Optimization Experience Optimization Analytics Company

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 26.4/100 · thin

Contract Quality 1.4 / 21

Developer Ergonomics 11.2 / 17

Access Clarity 1.1 / 17

Operational Transparency 2.0 / 11

Contract Governance 0.5 / 10

Discoverability 6.2 / 9

Regulatory Posture 2.3 / 15

Agent readiness — 10/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 6.5 — up to +23.4 composite points
Access Clarity scores 6.6 — up to +18.7 composite points
Contract Governance scores 4.5 — up to +11.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/evolv/apis.yml: open an issue on github.com/api-evangelist/evolv to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Postman Collections

measured — observed by APIs.io (published)

APIs 1

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

Evolv Participant API

The Evolv Participant API is the runtime edge API the client SDKs call to fetch a participant's experiment configuration and allocations for an environment, and to ingest contex...

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

Evolv

POSTMAN

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

evolv-allocate-participant

AGENT SKILL

evolv-offline-preallocations

AGENT SKILL

evolv-record-events

AGENT SKILL

Evolv API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Evolv Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Evolv Rate Limits

0 limits

RATE LIMITS

Examples 1

Example request and response payloads for these APIs.

Evolv Configuration Basic Response Example

1 fields

EXAMPLE

Security Posture 2

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

Evolv Authentication

apiKey/http · 3 schemes

SECURITY

Evolv Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Sandbox

Sandbox

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

AgentSkills

AgentSkill

AgentSkill

AgentSkill

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Lifecycle

Lifecycle

Conformance

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SDKs

Packages

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Commercial 1

Pricing, plans, and the legal terms of use

Plans

Plans

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: evolv
name: Evolv
description: Evolv AI (formerly Sentient Ascend) is an experience optimization and autonomous experimentation platform that
  continuously tests and personalizes digital experiences using machine learning. Its Participant API and official client
  SDKs for JavaScript, iOS, Android, PHP and React allocate visitors to experiment variants, deliver optimized configurations,
  and ingest behavioral events so AI-driven optimization can evolve web and app experiences without manual A/B-test management.
  Enterprises use Evolv AI to automate conversion-rate optimization and personalization across their digital properties.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://evolv.ai/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/evolv/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
- lightspeed-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Experimentation
- Optimization
- Personalization
- A/B Testing
- Machine Learning
- Conversion Rate Optimization
- Experience Optimization
- Analytics
- Company
tags_raw:
- Experimentation
- Optimization
- Personalization
- A/B Testing
- Machine Learning
- Conversion Rate Optimization
- Experience Optimization
- Analytics
- Company
apis:
- name: Evolv Participant API
  description: The Evolv Participant API is the runtime edge API the client SDKs call to fetch a participant's experiment
    configuration and allocations for an environment, and to ingest context and behavioral events (the "beacon"/data endpoint).
    Requests are keyed by a public environment id and a participant uid; the API is versioned in the URL path (v1). Documented
    as a public Postman collection at developers.evolv.ai.
  humanURL: https://developers.evolv.ai/
  baseURL: https://participants.evolv.ai
  tags:
  - Experimentation
  - Optimization
  - Personalization
  properties:
  - type: APIReference
    url: https://developers.evolv.ai/
  - type: Postman
    url: postman/evolv-participant-api.postman_collection.json
  - type: SDK
    url: https://media.evolv.ai/javascript-sdk/releases/latest/docs/EvolvClient.html
  - type: ErrorCatalog
    url: errors/evolv-problem-types.yml
  - type: DataModel
    url: data-model/evolv-data-model.yml
  - type: RateLimits
    url: rate-limits/evolv-rate-limits.yml
  - type: Examples
    url: examples/evolv-configuration-basic-response-example.json
  - type: Examples
    url: examples/evolv-allocations-get-participants-allocations-example.json
  - type: Examples
    url: examples/evolv-preallocations-basic-response-example.json
common:
- type: RateLimits
  url: rate-limits/evolv-rate-limits.yml
- type: Website
  url: https://www.evolv.ai
- type: DeveloperPortal
  url: https://developers.evolv.ai/
- type: Documentation
  url: https://developers.evolv.ai/
- type: GitHubOrganization
  url: https://github.com/evolv-ai
- type: SDKs
  url: packages/evolv-packages.yml
- type: Packages
  url: packages/evolv-packages.yml
- type: CLI
  url: cli/evolv-cli.yml
- type: Authentication
  url: authentication/evolv-authentication.yml
- type: Sandbox
  url: sandbox/evolv-sandbox.yml
- type: Conventions
  url: conventions/evolv-conventions.yml
- type: Lifecycle
  url: lifecycle/evolv-lifecycle.yml
- type: ChangeLog
  url: changelog/evolv-changelog.yml
- type: X-MCPServerCandidate
  url: mcp/evolv-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Conformance
  url: conformance/evolv-conformance.yml
- type: LLMsTxt
  url: llms/evolv-llms.txt
- type: DomainSecurity
  url: security/evolv-domain-security.yml
- type: Login
  url: https://app.evolv.ai
- type: Plans
  url: plans/evolv-plans-pricing.yml
- type: AgentSkills
  url: skills/_index.yml
- type: AgentSkill
  url: skills/evolv-allocate-participant.md
- type: AgentSkill
  url: skills/evolv-record-events.md
- type: AgentSkill
  url: skills/evolv-offline-preallocations.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 13
  pass: local-v1
  note: Found and saved Evolv's own published Postman Collection v2 (7 operations, saved response examples) at developers.evolv.ai
    — the machine-readable contract earlier rounds had missed. Probed the live Participant API for its real error envelope
    and header behaviour. Recorded that the evolv.ai marketing site now answers HTTP 401 (Squarespace "Private Site") on every
    path while the API, docs and console stay live.
x-lifecycle:
  state: shuttered
  reason: domain-does-not-resolve
  observed: '2026-09-27'
  detail: The company's own domain returned no A or AAAA record when probed. This is an observation about the domain, not
    a request from the company.
  indexed: false

Evolv API — frequently asked questions

Does Evolv have an API?

Yes. APIs.io lists 1 API from Evolv, including Evolv Participant API.

How do I authenticate with the Evolv API?

Evolv uses bearer-token authentication (apiKey/http · 3 schemes). The details are profiled on APIs.io as Evolv Authentication.

Is the Evolv API ready for AI agents?

Evolv has a Kin Score of 26.4 out of 100 (thin) and an Agent Readiness score of 10.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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