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 API contracts indexed 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 and 1 Spectral governance ruleset.

Lucent’s developer surface includes authentication, CLI, documentation, API reference, getting-started guide, engineering blog, pricing, and 31 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.3/100 strong ▬ flat Agent 60/100 agent ready Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 3 Agent Skills

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

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Product Engineering Management

BC-4200

Issues

PATCH /api/v1/issues/{issueId}

Product Telemetry & Experimentation Management

BC-4280

SDK

POST /api/sdk/replay

Kin Score

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

Composite quality — 60.3/100 · strong

Contract Quality 10.8 / 19

Developer Ergonomics 11.0 / 15

Access Clarity 12.6 / 15

Operational Transparency 1.0 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 60/100 · 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

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 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/.

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

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Well-Known Catalog +4 pts — common[].type includes WellKnown, APICatalog, or api-catalog
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures

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

Operational Transparency scores 10.5 — up to +11.6 composite points
Contract Quality scores 57.4 — up to +10.7 composite points
Contract Governance scores 31.8 — up to +8.2 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/lucent/apis.yml: open an issue on github.com/api-evangelist/lucent 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 5

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

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 4

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

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

Remote MCP server at app.lucenthq.com over HTTP; 5 tools listed.

MCP SERVER

Agent Skills 3

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

Ingest a Lucent session replay

AGENT SKILL

Monitor Lucent signals and insights

AGENT SKILL

Triage Lucent issues

AGENT SKILL

Lucent API pricing

Prices published by Lucent, read 2026-10-07 from lucenthq.com/pricing.

Plan	Price
Starter	$499/mo Includes: Up to 10,000 monthly session usage; up to 3 Active Signals; up to 3 custom session filtering rules;
Pro	$799/mo Includes: Up to 30,000 monthly session usage; unlimited Active Signals and filtering rules; 30 Fix PRs / month
Enterprise	Custom Includes: Unlimited sessions, retention, Fix PRs; all + custom integrations; SOC 2; SSO/SAML; SLA; on-prem / V

Plan details, limits and sources →

Billed by: subscription · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Lucent Plans Pricing

3 plans

PLANS

Lucent Price Estimates

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Lucent

SLA

FinOps 1

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

Lucent Finops

FINOPS

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

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Lucent API Rules

58 rules · 54 errors 1 warnings 3 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Lucent Openapi Overlay

4 actions · update · lucent-openapi-original.json

DERIVED

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 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - security
  generated: '2026-11-06'
  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'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
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: Plans
  url: plans/lucent-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/lucent-capability-edges.yml
  name: Lucent Business Capability Map
- 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

Lucent API — frequently asked questions

Does Lucent have an API?

Yes. APIs.io lists 4 APIs from Lucent, including Lucent Insights API, Lucent Issues API and Lucent Sdk API, and 1 more.

Is there an OpenAPI specification for the Lucent API?

Yes. APIs.io indexes 4 OpenAPI specifications for Lucent, each linked for download from this page.

How do I authenticate with the Lucent API?

Lucent documents its authentication (apiKey/http/oauth2 · 2 schemes). The details are profiled on APIs.io as Lucent Authentication.

How much does the Lucent API cost?

Lucent publishes its prices; its Starter plan is $499/mo as of 2026-10-07. APIs.io lists 3 pricing plans for Lucent, with each plan's price, limits and inclusions under Pricing on this page.

Does Lucent have an MCP server?

Yes. APIs.io lists 1 MCP server for Lucent: Remote MCP server at app.lucenthq.com over HTTP; 5 tools listed.

Is the Lucent API ready for AI agents?

Lucent has a Kin Score of 60.3 out of 100 (strong) and an Agent Readiness score of 59.7 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

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How their score was established

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