Apache Solr website screenshot

Apache Solr

Apache Solr is a popular, open source enterprise search platform built on Apache Lucene that provides full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document handling. Solr powers the search and navigation features of many of the world's largest internet sites and is highly scalable and reliable. Solr exposes a comprehensive HTTP/REST API (v1 and v2) for indexing, querying, and managing cores, collections, and configurations.

Apache Solr publishes 7 APIs on the APIs.io network, including Collections API, CollectionsAdminHandler API, Config API, and 4 more. Tagged areas include Search, Enterprise Search, Full-Text Search, Open-Source, and Lucene.

Apache Solr’s developer surface includes authentication, documentation, GitHub presence, engineering blog, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
22.9/100 emerging ▬ flat Agent 19/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
SearchEnterprise SearchFull-Text SearchOpen-SourceLuceneIndexing

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 22.9/100 · emerging
Contract Quality 10.1 / 23
Developer Ergonomics 5.1 / 18
Access Clarity 0.0 / 18
Operational Transparency 0.6 / 12
Contract Governance 0.0 / 11
Discoverability 5.3 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 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 0 / 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 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
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.
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/solr: 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 8

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

Apache Solr REST API

HTTP/REST API for Apache Solr providing endpoints for querying, indexing, schema management, collections administration, and core administration. The v2 API uses RESTful resourc...

Apache Solr Collections API

Cluster-level collection management

Apache Solr CollectionsAdminHandler API

Legacy Collections admin handler endpoints

Apache Solr Config API

Per-collection configuration operations

Apache Solr Cores API

Node-level core administration

Apache Solr Schema API

Per-collection schema operations

Apache Solr Shards API

Shard management for collections

Apache Solr Update API

Per-collection document update operations

Scroll for all 8

Open Collections 9

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

API Collection

OPEN COLLECTION

Apache Solr REST Collections API

OPEN COLLECTION

Apache Solr REST Collections CollectionsAdminHandler API

OPEN COLLECTION

Apache Solr REST Collections Config API

OPEN COLLECTION

Apache Solr REST Collections Cores API

OPEN COLLECTION

Apache Solr REST Collections Schema API

OPEN COLLECTION

Apache Solr REST Collections Shards API

OPEN COLLECTION

Apache Solr REST Collections Update API

OPEN COLLECTION

Apache Solr REST API

OPEN COLLECTION

Scroll for all 9

Security Posture 3

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

Solr Authentication

http · 1 scheme

SECURITY

Solr Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Solr Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Solr Agentic Access

14 operations · 10 acting

14 operations · 10 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Community
Community

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Downloads
Downloads

Source (apis.yml)

apis.yml Raw ↑ 
aid: solr
name: Apache Solr
description: Apache Solr is a popular, open source enterprise search platform built on Apache Lucene that provides full-text
  search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document handling. Solr powers
  the search and navigation features of many of the world's largest internet sites and is highly scalable and reliable. Solr
  exposes a comprehensive HTTP/REST API (v1 and v2) for indexing, querying, and managing cores, collections, and configurations.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  try_now_blocked_by: loopback
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/solr.png
tags:
- Search
- Enterprise Search
- Full-Text Search
- Open-Source
- Lucene
- Indexing
tags_raw:
- Search
- Enterprise Search
- Full-Text Search
- Open Source
- Lucene
- Indexing
url: https://raw.githubusercontent.com/api-evangelist/solr/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: solr:rest-api
  name: Apache Solr REST API
  description: HTTP/REST API for Apache Solr providing endpoints for querying, indexing, schema management, collections administration,
    and core administration. The v2 API uses RESTful resource paths under /api while the legacy v1 API uses /solr endpoints.
    Authentication is pluggable and supports Basic, JWT, and Certificate authentication.
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Search
  - Indexing
  - Collection
  - Cores
  - Schema
  - Query
  tags_raw:
  - Search
  - Indexing
  - Collections
  - Cores
  - Schema
  - Query
  properties:
  - type: Documentation
    url: https://solr.apache.org/guide/
  - type: V2 API Reference
    url: https://solr.apache.org/guide/solr/latest/configuration-guide/v2-api.html
  - type: Collections API
    url: https://solr.apache.org/guide/solr/latest/configuration-guide/collections-api.html
  - type: Client APIs
    url: https://solr.apache.org/guide/solr/latest/deployment-guide/client-apis.html
- aid: solr:solr-collections-api
  name: Apache Solr Collections API
  description: Cluster-level collection management
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Collection
  tags_raw:
  - Collections
  properties:
  - type: OpenAPI
    url: openapi/solr-collections-api-openapi.yml
- aid: solr:solr-collectionsadminhandler-api
  name: Apache Solr CollectionsAdminHandler API
  description: Legacy Collections admin handler endpoints
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - CollectionsAdminHandler
  properties:
  - type: OpenAPI
    url: openapi/solr-collectionsadminhandler-api-openapi.yml
- aid: solr:solr-config-api
  name: Apache Solr Config API
  description: Per-collection configuration operations
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Config
  properties:
  - type: OpenAPI
    url: openapi/solr-config-api-openapi.yml
- aid: solr:solr-cores-api
  name: Apache Solr Cores API
  description: Node-level core administration
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Cores
  properties:
  - type: OpenAPI
    url: openapi/solr-cores-api-openapi.yml
- aid: solr:solr-schema-api
  name: Apache Solr Schema API
  description: Per-collection schema operations
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Schema
  properties:
  - type: OpenAPI
    url: openapi/solr-schema-api-openapi.yml
- aid: solr:solr-shards-api
  name: Apache Solr Shards API
  description: Shard management for collections
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags:
  - Shards
  properties:
  - type: OpenAPI
    url: openapi/solr-shards-api-openapi.yml
- aid: solr:solr-update-api
  name: Apache Solr Update API
  description: Per-collection document update operations
  humanURL: https://solr.apache.org/guide/
  baseURL: http://localhost:8983/api
  tags: []
  tags_raw:
  - Update
  properties:
  - type: OpenAPI
    url: openapi/solr-update-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/solr-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/solr-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/solr-domain-security.yml
- type: Authentication
  url: authentication/solr-authentication.yml
- type: Website
  url: https://solr.apache.org/
- type: Documentation
  url: https://solr.apache.org/guide/
- type: GitHub
  url: https://github.com/apache/solr
- type: Downloads
  url: https://solr.apache.org/downloads.html
- type: Community
  url: https://solr.apache.org/community.html
- url: https://solr.apache.org/feeds/solr/news.atom.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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