Lucent

Lucent is an AI product manager for session replay: it watches user session recordings continuously and automatically detects bugs and UX issues, surfacing them as prioritized, AI-verified issues with reproduction steps, console logs, network activity, and affected-user counts. It ingests rrweb session batches from a lightweight browser SDK (plus React Native and Flutter), imports replays from providers such as PostHog and Sentry, and exposes a REST Data API to read issues, signals, and insights and to update issue status, webhooks for issue events, and a hosted Model Context Protocol (MCP) server so agents like Claude and Cursor can query Lucent data directly. Founded 2025, Y Combinator Winter 2026 batch.

Lucent publishes 4 APIs on the APIs.io network, including Insights API, Issues API, Sdk API, and 1 more. Tagged areas include Company, Session Replay, Product Analytics, Bug Detection, and Observability.

The Lucent catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Lucent’s developer surface includes authentication, CLI, documentation, API reference, getting-started guide, engineering blog, pricing, and 29 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.7/100 developing ▬ flat Agent 59/100 agent ready Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Session Replay Product Analytics Bug Detection Observability Artificial Intelligence Developer Tools MCP Webhook

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 50.7/100 · developing

Contract Quality 10.8 / 19

Developer Ergonomics 11.0 / 15

Access Clarity 6.7 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.6 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 59/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/lucent: 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 4

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

Lucent Insights API

The Insights API from Lucent — 1 operation(s) for insights.

Lucent Issues API

The Issues API from Lucent — 2 operation(s) for issues.

Lucent Sdk API

The Sdk API from Lucent — 1 operation(s) for sdk.

Lucent Signals API

The Signals API from Lucent — 1 operation(s) for signals.

Open Collections 5

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

API Collection

OPEN COLLECTION

Lucent Insights API

OPEN COLLECTION

Lucent Insights Issues API

OPEN COLLECTION

Lucent Insights Sdk API

OPEN COLLECTION

Lucent Insights Signals API

OPEN COLLECTION

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

Lucent — triage and resolve an issue

List unresolved issues, fetch the top one, and mark it resolved.

ARAZZO

MCP Servers 1

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

Lucent MCP Server

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Lucent Webhooks

Lucent pushes signed HTTP callbacks to a receiver URL you register (Organization → Webhooks) when events happen in your organization. Deliveries are signed with HMAC-SHA256 (Luc...

ASYNCAPI

Security Posture 2

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

Lucent Authentication

apiKey/http/oauth2 · 2 schemes

SECURITY

Lucent Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Lucent Scopes

2 scopes

SCOPES

Agentic Access 1

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

Lucent Agentic Access

6 operations · 2 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 3

Reference material describing how the API behaves

AsyncAPI

AsyncAPI

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 7

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

WellKnown

LLMsTxt

AgentSkill

AgentSkill

AgentSkill

Scroll for all 7

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Arazzo

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

CLI

CLI

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Support

Support

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

Overlay

Overlay

Source (apis.yml)

aid: lucent
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: 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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/lucent.png
name: Lucent
description: 'Lucent is an AI product manager for session replay: it watches user session recordings continuously and automatically
  detects bugs and UX issues, surfacing them as prioritized, AI-verified issues with reproduction steps, console logs, network
  activity, and affected-user counts. It ingests rrweb session batches from a lightweight browser SDK (plus React Native and
  Flutter), imports replays from providers such as PostHog and Sentry, and exposes a REST Data API to read issues, signals,
  and insights and to update issue status, webhooks for issue events, and a hosted Model Context Protocol (MCP) server so
  agents like Claude and Cursor can query Lucent data directly. Founded 2025, Y Combinator Winter 2026 batch.'
url: https://raw.githubusercontent.com/api-evangelist/lucent/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Session Replay
- Product Analytics
- Bug Detection
- Observability
- Artificial Intelligence
- Developer Tools
- MCP
- Webhook
tags_raw:
- Company
- Session Replay
- Product Analytics
- Bug Detection
- Observability
- Artificial Intelligence
- Developer Tools
- MCP
- Webhooks
apis:
- aid: lucent:lucent-insights-api
  name: Lucent Insights API
  description: The Insights API from Lucent — 1 operation(s) for insights.
  humanURL: https://docs.lucenthq.com/api-reference/introduction
  baseURL: https://app.lucenthq.com
  tags:
  - Insights
  properties:
  - type: OpenAPI
    url: openapi/lucent-insights-api-openapi.yml
- aid: lucent:lucent-issues-api
  name: Lucent Issues API
  description: The Issues API from Lucent — 2 operation(s) for issues.
  humanURL: https://docs.lucenthq.com/api-reference/introduction
  baseURL: https://app.lucenthq.com
  tags:
  - Issues
  properties:
  - type: OpenAPI
    url: openapi/lucent-issues-api-openapi.yml
- aid: lucent:lucent-sdk-api
  name: Lucent Sdk API
  description: The Sdk API from Lucent — 1 operation(s) for sdk.
  humanURL: https://docs.lucenthq.com/api-reference/introduction
  baseURL: https://app.lucenthq.com
  tags:
  - SDK
  tags_raw:
  - Sdk
  properties:
  - type: OpenAPI
    url: openapi/lucent-sdk-api-openapi.yml
- aid: lucent:lucent-signals-api
  name: Lucent Signals API
  description: The Signals API from Lucent — 1 operation(s) for signals.
  humanURL: https://docs.lucenthq.com/api-reference/introduction
  baseURL: https://app.lucenthq.com
  tags:
  - Signals
  properties:
  - type: OpenAPI
    url: openapi/lucent-signals-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/lucent-agentic-access.yml
- type: DomainSecurity
  url: security/lucent-domain-security.yml
- type: Authentication
  url: authentication/lucent-authentication.yml
- type: OAuthScopes
  url: scopes/lucent-scopes.yml
- type: MCPServer
  url: mcp/lucent-mcp.yml
- type: Packages
  url: packages/lucent-packages.yml
- type: SDKs
  url: packages/lucent-packages.yml
- type: CLI
  url: cli/lucent-cli.yml
- type: WellKnown
  url: well-known/lucent-well-known.yml
- type: LLMsTxt
  url: llms/lucent-llms.txt
- type: Conventions
  url: conventions/lucent-conventions.yml
- type: Idempotency
  url: conventions/lucent-conventions.yml
- type: ErrorCatalog
  url: errors/lucent-problem-types.yml
- type: Lifecycle
  url: lifecycle/lucent-lifecycle.yml
- type: Conformance
  url: conformance/lucent-conformance.yml
- type: DataModel
  url: data-model/lucent-data-model.yml
- type: AsyncAPI
  url: asyncapi/lucent-webhooks-asyncapi.yml
- type: Webhooks
  url: asyncapi/lucent-webhooks-asyncapi.yml
- type: Overlay
  url: overlays/lucent-openapi-overlay.yaml
- type: Arazzo
  name: Triage and resolve an issue
  url: arazzo/lucent-triage-and-resolve.yml
- type: AgentSkill
  name: Triage Lucent issues
  url: skills/lucent-triage-issues.md
- type: AgentSkill
  name: Monitor Lucent signals and insights
  url: skills/lucent-monitor-signals-insights.md
- type: AgentSkill
  name: Ingest a Lucent session replay
  url: skills/lucent-ingest-replay.md
- type: Website
  url: https://lucenthq.com
- type: DeveloperPortal
  url: https://docs.lucenthq.com
- type: Documentation
  url: https://docs.lucenthq.com
- type: APIReference
  url: https://docs.lucenthq.com/api-reference/introduction
- type: GettingStarted
  url: https://docs.lucenthq.com/quickstart
- type: Blog
  url: https://lucenthq.com/blog
- type: Pricing
  url: https://lucenthq.com/pricing
- type: SignUp
  url: https://app.lucenthq.com/sign-up
- type: Login
  url: https://app.lucenthq.com
- type: TermsOfService
  url: https://lucenthq.com/terms
- type: PrivacyPolicy
  url: https://lucenthq.com/privacy
- type: Support
  url: https://lucenthq.com/contact
- type: GitHubOrganization
  url: https://github.com/lucent-ai
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 25
  pass: local-v1

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