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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.

agent aware

More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.

Kin Score

API Evangelist profiles Apache Solr the way a machine reads it — 13 machine-readable artifacts across 8 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Apache Solr scores 26.8/100 (emerging), with a separate agent-readiness read of 41/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 26.8/100 · emerging
Contract Quality 12.2 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 8.8 / 10
Agent readiness — 41/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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

How we profile Apache Solr

Each block below is one kind of artifact we hold for Apache Solr. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 8

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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 within the panel for all 8 ·

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

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

Apache Solr REST API

OPEN COLLECTION

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

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

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

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

Solr Agentic Access

14 operations · 10 acting

14 operations · 10 acting

AGENTIC

Resources

Every other property we hold for Apache Solr — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Operate 1

Status, limits, changes, and where to get help

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/solr · machine-readable index on apis.io