Replay

Replay is an AI-native QA and time-travel debugging platform for web applications. Replay QA autonomously explores a web app, records every session in a deterministic Replay Browser, finds real bugs, and hands a coding agent the root cause and a suggested fix. The recording is a time-travel database of everything that happened in the browser — sources, console, network, DOM, React renders — inspectable after the fact without reproducing the bug locally. Replay exposes this programmatically through a GraphQL API, a WebSocket Replay Protocol, a published Model Context Protocol (MCP) server for agent debugging, a CLI (replayio), and Playwright/Cypress recording integrations. Backed by a16z and Version One Ventures.

Replay publishes 1 API on the APIs.io network. Tagged areas include Company, Debugging, Testing, Quality Assurance, and Developer Tools.

Replay’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, support, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.4/100 developing ▬ flat Agent 30/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Debugging Testing Quality Assurance Developer ToolsTime Travel DebuggingMCP GraphQL Browser Automation Artificial Intelligence

Kin Score

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

Composite quality — 42.4/100 · developing

Contract Quality 0.0 / 25

Developer Ergonomics 15.7 / 20

Access Clarity 12.1 / 20

Operational Transparency 4.8 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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/replay: 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 1

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

Replay GraphQL API

GraphQL API for retrieving workspace and user metadata — replays/recordings, team members, and comments on a replay. POST queries to the endpoint with a Replay API key as a bear...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Replay MCP

MCP SERVER

Security Posture 4

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

Replay Authentication

apiKey/oauth2/openIdConnect · 2 schemes

SECURITY

Replay Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Replay Vulnerability Disclosure

contact published

SECURITY

Replay Trust Center

SOC 2 Type 2

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

WellKnown

LLMsTxt

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

Packages

SDKs

CLI

Access & Security 6

Authentication, authorization, and security posture

Authentication

Authentication

Compliance

Compliance

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

APICatalog

APICatalog

Source (apis.yml)

aid: replay
name: Replay
description: Replay is an AI-native QA and time-travel debugging platform for web applications. Replay QA autonomously explores
  a web app, records every session in a deterministic Replay Browser, finds real bugs, and hands a coding agent the root cause
  and a suggested fix. The recording is a time-travel database of everything that happened in the browser — sources, console,
  network, DOM, React renders — inspectable after the fact without reproducing the bug locally. Replay exposes this programmatically
  through a GraphQL API, a WebSocket Replay Protocol, a published Model Context Protocol (MCP) server for agent debugging,
  a CLI (replayio), and Playwright/Cypress recording integrations. Backed by a16z and Version One Ventures.
url: https://raw.githubusercontent.com/api-evangelist/replay/refs/heads/main/apis.yml
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: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.replay.io/replayQA_og-image.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- version-one-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Debugging
- Testing
- Quality Assurance
- Developer Tools
- Time Travel Debugging
- MCP
- GraphQL
- Browser Automation
- Artificial Intelligence
tags_raw:
- Company
- Debugging
- Testing
- Quality Assurance
- Developer Tools
- Time Travel Debugging
- MCP
- GraphQL
- Browser Automation
- AI
apis:
- name: Replay GraphQL API
  description: GraphQL API for retrieving workspace and user metadata — replays/recordings, team members, and comments on
    a replay. POST queries to the endpoint with a Replay API key as a bearer token.
  humanURL: https://docs.replay.io/reference/integrations/replay-apis/graphql-api
  baseURL: https://api.replay.io/v1/graphql
  properties:
  - type: Authentication
    url: authentication/replay-authentication.yml
  - type: Conventions
    url: conventions/replay-conventions.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.replay.io
- type: DeveloperPortal
  url: https://docs.replay.io
- type: Documentation
  url: https://docs.replay.io
- type: APIReference
  url: https://docs.replay.io/reference/integrations/replay-apis/replay-protocol
- type: GettingStarted
  url: https://docs.replay.io/basics/getting-started/record-your-app
- type: Blog
  url: https://www.replay.io/blog
- type: GitHubOrganization
  url: https://github.com/replayio
- type: Pricing
  url: https://www.replay.io/pricing
- type: SignUp
  url: https://app.replay.io/login
- type: Support
  url: mailto:support@replay.io
- type: TermsOfService
  url: https://www.replay.io/terms-of-service
- type: PrivacyPolicy
  url: https://www.replay.io/privacy-policy
- type: StatusPage
  url: https://status.replay.io
- type: MCPServer
  url: mcp/replay-mcp.yml
- type: Packages
  url: packages/replay-packages.yml
- type: SDKs
  url: packages/replay-packages.yml
- type: CLI
  url: cli/replay-cli.yml
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/replay-well-known.yml
- type: APICatalog
  url: well-known/replay-www-api-catalog.json
- type: Authentication
  url: authentication/replay-authentication.yml
- type: Conventions
  url: conventions/replay-conventions.yml
- type: ChangeLog
  url: changelog/replay-changelog.yml
- type: Lifecycle
  url: lifecycle/replay-lifecycle.yml
- type: Conformance
  url: conformance/replay-conformance.yml
- type: Compliance
  url: https://www.replay.io/blog/replay-achieves-soc2
- type: TrustCenter
  url: security/replay-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/replay-vulnerability-disclosure.yml
- type: Security
  url: https://www.replay.io/privacy-policy
- type: DomainSecurity
  url: security/replay-domain-security.yml
- type: LLMsTxt
  url: llms/replay-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 24
  pass: local-v1

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