# Vectara

**Canonical:** https://apis.io/providers/vectara/  
**Website:** https://www.vectara.com/  
**APIs profiled:** 9

Vectara is a Retrieval Augmented Generation (RAG) as a service platform that provides grounded generative AI for enterprises. The API-first platform exposes a unified REST API v2 for managing corpora, ingesting documents, performing semantic and hybrid search, generating answers with hallucination detection via the Hughes Hallucination Evaluation Model (HHEM), and building agents and pipelines on top of enterprise data. Headquartered in Mountain View, California and founded by former Google Search engineers, Vectara ships first-party Python and TypeScript SDKs, a public MCP server, React UI widgets, and an open ingestion framework.

## Kin Score — 56.0 / 100 (strong)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.5 from 55.5).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 66.0 |
| Governance | 28.8 |
| Contract Governance | 28.8 |
| Operational Transparency | 57.9 |
| Developer Ergonomics | 33.3 |
| Commercial Clarity | 68.4 |
| Access Clarity | 68.4 |

## Agent readiness — 32.1 (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 | partial |
| 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

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

## APIs (9)

- **Vectara Chat API** — Multi-turn conversational interface over a Vectara corpus that maintains chat history and produces grounded, cited answers with optional streaming.
- **Vectara OAuth 2.0 Token API** — OAuth 2.0 client credentials flow used to obtain a short-lived JWT for calling the Vectara REST API.
- **Vectara Agents API** — Build and operate agents over Vectara corpora.
- **Vectara Authentication API** — OAuth 2.0 client credentials flow for obtaining JWT tokens.
- **Vectara Corpora API** — Create, list, update, and delete corpora that hold indexed documents.
- **Vectara Documents API** — Upload, index, retrieve, update, and delete documents in a corpus.
- **Vectara Pipelines API** — Manage pipelines and inspect pipeline runs.
- **Vectara Query API** — Semantic, keyword, and hybrid queries with optional grounded generation.
- **Vectara Tools API** — Manage tools and tool servers used by agents.

## Agentic access (1)

- **Vectara Agentic Access** — 34 operations · 23 acting · 1 human-in-the-loop

## Security (3)

- **Vectara Authentication** — apiKey/oauth2 · 2 schemes
- **Vectara Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Vectara Trust Center** — SOC 2, ISO 27001

## Plans (1)

- **Vectara Plans Pricing**

## Tags

Artificial Intelligence, Agents, Corpora, Embeddings, Enterprise Search, Generative AI, Grounded Generation, Hallucination Detection, LLM, MCP, RAG, Retrieval, Search, Semantic Search, Vector Search

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