# Chroma

**Canonical:** https://apis.io/providers/chroma-db/  
**Website:** https://www.trychroma.com  
**APIs profiled:** 6

Chroma (Chroma DB) is an open-source, AI-native vector database (embedding database) for building LLM, RAG, and semantic-search applications. It provides storage, indexing, and retrieval for vector embeddings with metadata filtering, full-text and regex search, and multi-modal retrieval across text, images, and audio. Chroma is Apache-2.0 licensed and self-hostable via a single server, and is also available as Chroma Cloud, a serverless, usage-based managed offering. Its HTTP/REST v2 API is organized around tenants, databases, collections, and the records (embeddings) inside each collection - add, upsert, update, get, query (similarity search), and delete - and is the same interface used by the Python, JavaScript/TypeScript, Rust, and other client libraries.

## Kin Score — 37.9 / 100 (thin)

Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.4 from 38.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 53.6 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## APIs (6)

- **Chroma Collections API** — Named vector stores holding embeddings and metadata.
- **Chroma Databases API** — Logical grouping of collections within a tenant.
- **Chroma Query API** — Nearest-neighbor vector similarity search over a collection.
- **Chroma Records API** — Embeddings (with documents, metadata, URIs) inside a collection.
- **Chroma System API** — Server health, version, and pre-flight operational endpoints.
- **Chroma Tenants API** — Top-level isolation boundary that owns databases.

## Agentic access (1)

- **Chroma Db Agentic Access** — 24 operations · 13 acting · 1 human-in-the-loop

## Security (2)

- **Chroma Db Authentication** — apiKey · 1 scheme
- **Chroma Db Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Chroma Db Plans Pricing**

## Tags

Vector Database, Vector Index, Vector Search, Vector Store, Embeddings, Similarity Search, RAG, Semantic Search, Artificial Intelligence, AI Inference, Machine-Learning, Open-Source

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