Vectara

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.

Vectara publishes 7 APIs on the APIs.io network, including Agents API, Authentication API, Corpora API, and 4 more. Tagged areas include Artificial Intelligence, Agents, Corpora, Embeddings, and Enterprise Search.

The Vectara catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Vectara’s developer surface includes authentication, documentation, tooling, GitHub presence, engineering blog, pricing, support, and 36 more developer resources.

🌐 Visit website 📡 Source on GitHub

56.0/100 strong ▬ flat Agent 32/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreeSelf serve⚡ Free to try

9 APIs

Artificial Intelligence Agents Corpora Embeddings Enterprise Search Generative AIGrounded GenerationHallucination Detection LLM MCP RAG Retrieval Search Semantic Search Vector Search

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 56.0/100 · strong

Contract Quality 16.5 / 25

Developer Ergonomics 6.7 / 20

Access Clarity 13.7 / 20

Operational Transparency 7.5 / 13

Contract Governance 3.5 / 12

Discoverability 8.2 / 10

Agent readiness — 32/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/vectara: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

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

Rate Limits 1

Documented rate limits and quota policies.

Vectara Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 4

Standalone JSON Schema definitions for this provider's data models.

Examples 4

Example request and response payloads for these APIs.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Vectara Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Vectara Agentic Access

34 operations · 23 acting · 1 human-in-the-loop

34 operations · 23 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

OpenAPI

OpenAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Rules

Rules

Vocabulary

Vocabulary

Build 20

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

SDKs

SDKs

SDKs

SDKs

Tools

Tools

Tools

Tools

Tools

Tools

Tools

Tools

Tools

Tools

Tools

Samples

Samples

Samples

GitHub

Scroll for all 20

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

DomainSecurity

Authentication

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

StatusPage

Support

ChangeLog

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

PrivacyPolicy

TermsOfService

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 1

Properties that don't map to a standard resource type

Developer

Developer

Source (apis.yml)

aid: vectara
name: Vectara
description: 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.
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/vectara.png
url: https://raw.githubusercontent.com/api-evangelist/vectara/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-25'
specificationVersion: '0.23'
type: Index
kind: contract
access: 3rd-Party
tags:
- Artificial Intelligence
- Agents
- Corpora
- Embeddings
- Enterprise Search
- Generative AI
- Grounded Generation
- Hallucination Detection
- LLM
- MCP
- RAG
- Retrieval
- Search
- Semantic Search
- Vector Search
tags_raw:
- AI
- Agents
- Corpora
- Embeddings
- Enterprise Search
- Generative AI
- Grounded Generation
- Hallucination Detection
- LLM
- MCP
- RAG
- Retrieval
- Search
- Semantic Search
- Vector Search
apis:
- aid: vectara:vectara-chat-api
  name: Vectara Chat API
  description: Multi-turn conversational interface over a Vectara corpus that maintains chat history and produces grounded,
    cited answers with optional streaming.
  humanURL: https://docs.vectara.com/docs/api-reference/chat-apis/chat-apis
  baseURL: https://api.vectara.io/v2
  tags:
  - Chat
  - Conversation
  - Generation
  - RAG
  properties:
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/chat-apis/chat-apis
- aid: vectara:vectara-oauth2-api
  name: Vectara OAuth 2.0 Token API
  description: OAuth 2.0 client credentials flow used to obtain a short-lived JWT for calling the Vectara REST API.
  humanURL: https://docs.vectara.com/docs/learn/authentication/oauth-2
  baseURL: https://auth.vectara.io
  tags:
  - Authentication
  - Tokens
  tags_raw:
  - Authentication
  - OAuth2
  - Tokens
  properties:
  - type: Documentation
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
- aid: vectara:vectara-agents-api
  name: Vectara Agents API
  description: Build and operate agents over Vectara corpora.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/vectara-agents-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-authentication-api
  name: Vectara Authentication API
  description: OAuth 2.0 client credentials flow for obtaining JWT tokens.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/vectara-authentication-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-corpora-api
  name: Vectara Corpora API
  description: Create, list, update, and delete corpora that hold indexed documents.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Corpora
  properties:
  - type: OpenAPI
    url: openapi/vectara-corpora-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-documents-api
  name: Vectara Documents API
  description: Upload, index, retrieve, update, and delete documents in a corpus.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/vectara-documents-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-pipelines-api
  name: Vectara Pipelines API
  description: Manage pipelines and inspect pipeline runs.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Pipelines
  properties:
  - type: OpenAPI
    url: openapi/vectara-pipelines-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-query-api
  name: Vectara Query API
  description: Semantic, keyword, and hybrid queries with optional grounded generation.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/vectara-query-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
- aid: vectara:vectara-tools-api
  name: Vectara Tools API
  description: Manage tools and tool servers used by agents.
  humanURL: https://docs.vectara.com/docs/rest-api/
  baseURL: https://api.vectara.io/v2
  tags:
  - Tools
  properties:
  - type: OpenAPI
    url: openapi/vectara-tools-api-openapi.yml
  - type: Documentation
    url: https://docs.vectara.com/docs/rest-api/
  - type: Authentication
    url: https://docs.vectara.com/docs/learn/authentication/oauth-2
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/admin-apis/corpora
  - type: JSONSchema
    url: json-schema/vectara-corpus-schema.json
  - type: JSONStructure
    url: json-structure/vectara-corpus-structure.json
  - type: JSONLD
    url: json-ld/vectara-context.jsonld
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/indexing-apis/indexing
  - type: JSONSchema
    url: json-schema/vectara-document-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/search-apis/search
  - type: JSONSchema
    url: json-schema/vectara-query-schema.json
  - type: Documentation
    url: https://docs.vectara.com/docs/api-reference/agents-api/agents
  - type: JSONSchema
    url: json-schema/vectara-agent-schema.json
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/vectara/overview
- type: AgenticAccess
  url: agentic-access/vectara-agentic-access.yml
- type: TrustCenter
  url: security/vectara-trust-center.yml
- type: DomainSecurity
  url: security/vectara-domain-security.yml
- type: Authentication
  url: authentication/vectara-authentication.yml
- type: OAuthScopes
  url: scopes/vectara-scopes.yml
- type: Website
  url: https://www.vectara.com/
- type: Developer
  url: https://docs.vectara.com/docs
- type: Documentation
  url: https://docs.vectara.com/docs/rest-api/
- type: OpenAPI
  url: https://docs.vectara.com/vectara-oas-v2.yaml
- type: SDKs
  name: Vectara Python SDK
  url: https://github.com/vectara/python-sdk
- type: SDKs
  name: Vectara TypeScript SDK
  url: https://github.com/vectara/typescript-sdk
- type: SDKs
  name: Vectara Agentic (Python)
  url: https://github.com/vectara/py-vectara-agentic
- type: SDKs
  name: LangChain Vectara
  url: https://github.com/vectara/langchain-vectara
- type: Tools
  name: Vectara MCP Server
  url: https://github.com/vectara/vectara-mcp
- type: Tools
  name: Vectara Ingest
  url: https://github.com/vectara/vectara-ingest
- type: Tools
  name: Vectara UI
  url: https://github.com/vectara/vectara-ui
- type: Tools
  name: React Search Widget
  url: https://github.com/vectara/react-search
- type: Tools
  name: React Chatbot Widget
  url: https://github.com/vectara/react-chatbot
- type: Tools
  name: Stream Query Client
  url: https://github.com/vectara/stream-query-client
- type: Tools
  name: Create UI Generator
  url: https://github.com/vectara/create-ui
- type: Tools
  name: Vectara Answer Reference App
  url: https://github.com/vectara/vectara-answer
- type: Tools
  name: Open RAG Evaluation
  url: https://github.com/vectara/open-rag-eval
- type: Tools
  name: Hallucination Leaderboard (HHEM)
  url: https://github.com/vectara/hallucination-leaderboard
- type: Tools
  name: Vectara Agent Skills
  url: https://github.com/vectara/agent-skills
- type: Samples
  name: Getting Started Examples
  url: https://github.com/vectara/getting-started
- type: Samples
  name: Example Notebooks
  url: https://github.com/vectara/example-notebooks
- type: Samples
  name: Design Patterns
  url: https://github.com/vectara/design-patterns
- type: GitHub
  url: https://github.com/vectara
- type: Blog
  url: https://www.vectara.com/blog
- type: Pricing
  url: https://www.vectara.com/pricing
- type: StatusPage
  url: https://status.vectara.com/
- type: Support
  url: https://docs.vectara.com/docs/support
- type: PrivacyPolicy
  url: https://vectara.com/legal/privacy-policy/
- type: TermsOfService
  url: https://vectara.com/legal/terms-of-service/
- type: LinkedIn
  url: https://www.linkedin.com/company/vectara/
- type: ChangeLog
  url: https://docs.vectara.com/docs/release-notes
- type: Integrations
  url: https://docs.vectara.com/docs/integrations
- type: LlmsText
  url: https://docs.vectara.com/llms.txt
- type: RateLimits
  url: rate-limits/vectara-rate-limits.yml
- type: Plans
  url: plans/vectara-plans-pricing.yml
- type: FinOps
  url: finops/vectara-finops.yml
- type: Rules
  url: rules/vectara-rules.yml
- type: Vocabulary
  url: vocabulary/vectara-vocabulary.yml
integrations:
- name: LangChain
- name: LlamaIndex
- name: Airbyte
- name: Unstructured
- name: Slack
- name: Snowflake
- name: AWS
- name: Google Cloud
- name: Microsoft Azure
- name: Model Context Protocol
solutions:
- name: Enterprise Search over Private Data
- name: Customer Support Assistants
- name: Internal Knowledge Bases
- name: Conversational Product Documentation
- name: Compliance and Policy Question Answering
- name: Sales and Marketing Content Discovery
- name: Hallucination-Scored RAG Pipelines
- name: Agentic Workflows over Corporate Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Vectara

APIs 9

Postman Collections 7

Open Collections 9

Pricing Plans 1

Rate Limits 1

FinOps 1

Semantic Vocabularies 1

Spectral Rules 2

JSON Schema 4

JSON Structure 1

Examples 4

Security Posture 3

Scopes 1

Agentic Access 1

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Access & Security 4

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