Laminar

aid: laminar
name: Laminar
description: 'Laminar is an open-source, OpenTelemetry-native observability and debugging platform built for AI agents and
  LLM applications. It traces every LLM call, tool call, and sub-agent a run produces, renders each trace as a readable transcript
  rather than a raw span tree, and turns that data into answers: a record-and-replay Debugger that serves everything before
  your change from cache so each iteration takes seconds, and Signals that let you describe outcomes and failures in plain
  language and extract structured events across all traces for clustering and alerting. The platform adds evaluations, datasets
  and labeling queues, a playground, full-text search, custom dashboards, and read-only ClickHouse SQL over trace data from
  the UI, the lmnr-cli, or a hosted MCP server. Laminar ships TypeScript and Python SDKs with auto-instrumentation for the
  Vercel AI SDK, Claude Agent SDK, OpenAI Agents SDK, LangChain/LangGraph, Pydantic AI, Browser Use, Playwright and more,
  and can run as managed Laminar Cloud or fully self-hosted via Docker Compose or Kubernetes/Helm.'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://laminar.sh/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/laminar/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
- techstars
x-backed-by-note: Inherited from the originating VC-portfolio stub and NOT verified against this company during enrichment.
  Laminar (lmnr / laminar.sh) is the open-source AI-agent observability company; the name collides with other companies called
  Laminar. Treat x-backed-by as unverified.
x-tier: enriched
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Observability
- LLM
- AI Agents
- Tracing
- OpenTelemetry
- Evaluations
- Monitoring
- Developer Tools
- Open Source
apis:
- aid: laminar:laminar-sql-query-api
  name: Laminar SQL Query API
  humanURL: https://laminar.sh/docs/platform/sql-editor
  baseURL: https://api.lmnr.ai
  tags:
  - SQL
  - Traces
  - Spans
  - Analytics
  description: Run SELECT-only ClickHouse SQL over a project's observability data via POST /v1/sql/query. Authenticates with
    a project API key as a bearer token, accepts a query plus typed {name:Type} parameters, and returns rows as a JSON data
    array. Queryable tables are spans, traces, events, tags, dataset_datapoints, dataset_datapoint_versions and evaluation_datapoints;
    queries are automatically scoped to the calling project so no tenant filter is required.
  properties:
  - url: https://laminar.sh/docs/platform/sql-editor
    type: Documentation
  - url: https://github.com/lmnr-ai/lmnr-skills/blob/main/skills/laminar/references/sql-query-api.md
    type: APIReference
- aid: laminar:laminar-otlp-trace-ingest-api
  name: Laminar OpenTelemetry Trace Ingest API
  humanURL: https://laminar.sh/docs/tracing/otel
  baseURL: https://api.lmnr.ai
  tags:
  - OpenTelemetry
  - OTLP
  - Tracing
  - Ingest
  description: The standard OpenTelemetry trace ingest endpoint at /v1/traces. Laminar accepts OTLP over gRPC, HTTP+protobuf,
    and (since May 2026) HTTP+JSON, so any OpenTelemetry-capable runtime — including browser SDKs without a protobuf encoder
    — can send spans without the Laminar SDK. Authenticated with a project API key; gRPC ingest is served on port 8443 for
    Laminar Cloud.
  properties:
  - url: https://laminar.sh/docs/tracing/otel
    type: Documentation
  - url: https://laminar.sh/docs/tracing/introduction
    type: Tracing
- aid: laminar:laminar-evaluations-api
  name: Laminar Evaluations API
  humanURL: https://laminar.sh/docs/evaluations/manual-evaluation
  baseURL: https://api.lmnr.ai
  tags:
  - Evaluations
  - Datasets
  - Scoring
  description: 'The lower-level LaminarClient.evals surface for wiring evaluations into an existing pipeline: create an evaluation,
    pre-register each datapoint so a row is visible in the UI before the executor runs, then update that datapoint with a
    trace id, executor output, and scores. Because update can be called any time after create, the executor and the scorer
    can run in different processes, which supports async LLM-judge scoring and pure backfills of scored rows.'
  properties:
  - url: https://laminar.sh/docs/evaluations/manual-evaluation
    type: Documentation
  - url: https://laminar.sh/docs/sdk/client
    type: APIReference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/laminar-domain-security.yml
- type: Website
  url: https://laminar.sh/
- type: DeveloperPortal
  url: https://laminar.sh/docs
- type: Documentation
  url: https://laminar.sh/docs
- type: APIReference
  url: https://laminar.sh/docs/sdk/client
- type: GettingStarted
  url: https://laminar.sh/docs/getting-started
- type: Support
  url: https://discord.gg/nNFUUDAKub
- type: Blog
  url: https://laminar.sh/blog
- type: GitHubOrganization
  url: https://github.com/lmnr-ai
- type: SourceCode
  url: https://github.com/lmnr-ai/lmnr
- type: Pricing
  url: https://laminar.sh/pricing
- type: SignUp
  url: https://laminar.sh/sign-in
- type: TermsOfService
  url: https://laminar.sh/policies/terms
- type: PrivacyPolicy
  url: https://laminar.sh/policies/privacy
- type: StatusPage
  url: https://status.laminar.sh
- type: SelfHosted
  url: https://laminar.sh/docs/self-hosting/overview
- type: Packages
  url: packages/laminar-packages.yml
- type: SDKs
  url: packages/laminar-packages.yml
- type: CLI
  url: cli/laminar-cli.yml
- type: MCPServer
  url: mcp/laminar-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/laminar-llms.txt
- type: Authentication
  url: authentication/laminar-authentication.yml
- type: Conventions
  url: conventions/laminar-conventions.yml
- type: ChangeLog
  url: changelog/laminar-changelog.yml
- type: Lifecycle
  url: lifecycle/laminar-lifecycle.yml
- type: Conformance
  url: conformance/laminar-conformance.yml
- type: WellKnown
  url: well-known/laminar-well-known.yml
- type: Plans
  url: plans/laminar-plans.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence