# open-metadata/OpenMetadata

The Open Context Layer for Data and AI ,  OpenMetadata is the open platform for building trusted data context and business semantics for humans, AI assistants, and agents.

Repository: https://github.com/open-metadata/OpenMetadata
Canonical: https://ross.abutalabs.com/products/openmetadata
Homepage: https://open-metadata.org
Language: TypeScript
License: Apache-2.0
License Family: permissive
Topics: metadata, datadiscovery, dataquality, data-profiling, metadata-management, data-catalog, data-observability, data-discovery, data-contracts, data-governance, data-lineage, data-quality, data-collaboration, mcp, mcp-server, context, context-layer, semantics, ontologies, ontologies-api
Last push: 2026-08-27T00:03:20+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 1858, "days_push": 7, "days_rel": 9, "gap_med": 5, "n_releases_24m": 100}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 14986, forks 2335 (observed 2026-08-28T04:11:09.009677+00:00)

## What it is
OpenMetadata is an open-source metadata management platform that unifies data cataloging, lineage, data quality, governance, and business semantics into a single metadata knowledge graph. It provides 130+ connectors, APIs, SDKs, and an MCP server so both humans and AI agents can discover, understand, and trust enterprise data.

## Use cases
- build a centralized data catalog for all our warehouses and dashboards
- track column-level lineage across pipelines and BI tools
- run data quality tests and profile tables automatically
- give AI agents governed context about our data via MCP
- manage business glossary terms and data ownership
- set up data contracts and governance policies
- discover and document datasets across Snowflake, BigQuery, and Databricks
- monitor data freshness and pipeline health

## When to choose
- you need a unified metadata platform spanning many data sources with 130+ connectors
- you want open-source data cataloging with lineage, quality, and governance in one tool
- you need to expose trusted data context to AI assistants and agents through an MCP server
- your organization requires glossaries, classifications, policies, and data contracts

## When to avoid
- you only need a lightweight schema registry or single-database documentation tool
- you cannot spare the Docker/Kubernetes resources (6+ GiB memory) for a full deployment
- you need only a simple data dictionary without governance or lineage features

## Facets
- artifact type: application
- maturity: active
- function: search-engine, api-framework, mcp, monitoring, data-science, etl, analytics, documentation
- domain: databases, analytics, data-science, self-hosted, artificial-intelligence, apis
- platform: self-hosted, python, cloud
- tags: data-catalog, metadata-management, data-lineage, data-quality, data-governance, data-observability, knowledge-graph, data-discovery, mcp-server, data-contracts, glossary, semantic-search, data-engineering, governance, docker, kubernetes, web-server, typescript

## Member repositories
- open-metadata/OpenMetadata (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:09.009677+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:06:47.168788+00:00, confidence not recorded.
  - readme: https://github.com/open-metadata/OpenMetadata (fetched 2026-08-28T04:11:09.009677+00:00, sha 27534348cfee)
  - homepage: https://open-metadata.org (fetched 2026-08-29T08:05:06.759684+00:00, sha 60bf5cb4de15)
  - site_page: https://docs.open-metadata.org (fetched 2026-08-29T08:05:06.829388+00:00, sha 4d5068ed9ab2)
  - site_page: https://docs.open-metadata.org/latest/quick-start/local-docker-deployment (fetched 2026-08-29T08:05:06.911505+00:00, sha ebd82a4e9ea7)
- Data as of 2026-08-30T08:39:29.467469+00:00.