# Apache Solr

**Canonical:** https://apis.io/providers/apache-solr/  
**Website:** https://solr.apache.org/  
**APIs profiled:** 10

Apache Solr is an open-source enterprise search platform built on Apache Lucene. It provides distributed indexing, replication, load-balanced querying, automated failover and recovery, and centralized configuration through SolrCloud. Solr exposes comprehensive REST/HTTP APIs for document indexing, full-text search with faceting and highlighting, schema management, collections management, and cluster operations. It is an Apache Software Foundation project used by major organizations for enterprise-scale search solutions.

## Kin Score — 39.2 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.2).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 46.2 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 57.1 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (10)

- **Apache Solr Search API** — The Solr Search API provides HTTP endpoints for full-text document search, including query parsers (Standard, DisMax, Extended DisMax), JSON Query DSL, faceting and JSON Facet A...
- **Apache Solr Indexing API** — The Solr Indexing API provides HTTP endpoints for adding, updating, and deleting documents from the search index. It supports JSON, XML, CSV, and binary Solr formats via the /up...
- **Apache Solr Schema API** — The Solr Schema API provides REST endpoints for managing the schema of a Solr collection, including field types, fields, dynamic fields, and copy fields. The Managed Schema appr...
- **Apache Solr Collections API** — The Solr Collections API provides REST endpoints for managing SolrCloud collections, shards, replicas, and aliases. It supports collection creation, deletion, modification, shar...
- **Apache Solr Config API** — The Solr Config API and Request Parameters API provide REST endpoints for managing Solr's solrconfig.xml settings at runtime without server restart, including request handler co...
- **Apache Solr Cluster API** — Cluster status and properties
- **Apache Solr Collections API** — Manage SolrCloud collections, replicas, and nodes
- **Apache Solr Query API** — Search a collection
- **Apache Solr Schema API** — Read and modify the schema of a collection
- **Apache Solr Update API** — Index, update, and delete documents

## Agentic access (1)

- **Apache Solr Agentic Access** — 21 operations · 10 acting

## Security (3)

- **Apache Solr Authentication** — http · 1 scheme
- **Apache Solr Domain Security** — TLSv1.3 · HSTS · DMARC
- **Apache Solr Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Apache Solr Plans Pricing**

## Use cases (5)

- **Enterprise Search** — Unified enterprise search across documents, databases, web content, and file systems.
- **E-Commerce Product Search** — Product catalog search with faceting, filtering, and recommendation engines.
- **Log Analytics** — Log ingestion and search for operational intelligence and security analysis.
- **AI/ML Vector Search** — Semantic and similarity search using dense vector embeddings from AI models.
- **Content Management Search** — Full-text search backend for CMS platforms and digital asset management systems.

## Tags

Enterprise Search, Full-Text Search, Lucene, Search, SolrCloud, Open-Source, Java

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/apache-solr/). Scores are computed from the provider's own public artifacts under a published rubric.