Nuclia website screenshot

Nuclia

Nuclia is a RAG-as-a-Service / AI search platform (now part of Progress as Progress Agentic RAG). It ingests unstructured data - documents, files, audio, video, web pages and conversations - into Knowledge Boxes, automatically extracting, embedding and indexing it so applications can run hybrid (semantic, keyword, graph) search and get grounded generative answers through a regional REST API.

Nuclia publishes 5 APIs on the APIs.io network, including Ask API, Knowledge Boxes API, Predict API, and 2 more. Tagged areas include AI, RAG, Search, Knowledge Base, and Unstructured Data.

The Nuclia catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Nuclia’s developer surface includes authentication, documentation, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
47.7/100 developing ▬ flat Agent 36/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serveFree trial⚡ Free to try
5 APIs
AIRAGSearchKnowledge BaseUnstructured Data

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 47.7/100 · developing
Contract Quality 17.1 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 9.5 / 20
Operational Transparency 4.8 / 13
Governance 5.0 / 12
Discoverability 7.4 / 10
Agent readiness — 36/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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 7 / 7
Typed Event Surface 6 / 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/nuclia: 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 5

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

Nuclia Ask API

Generative RAG answers, chat and summarization grounded in a Knowledge Box.

Nuclia Knowledge Boxes API

Create, configure and inspect Knowledge Boxes and their label sets.

Nuclia Predict API

Nuclia Understanding API (NUA) - generation, summarize, rephrase, rerank, embeddings and tokenization.

Nuclia Resources API

Ingest and manage resources - files, text, links and conversations.

Nuclia Search API

Hybrid search, find (RAG retrieval) and suggest over a Knowledge Box.

Open Collections 1

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

Nuclia RAG-as-a-Service API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Nuclia Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nuclia Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Nuclia Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Nuclia Ask / Chat Generative Answer Stream (HTTP + ndjson/SSE)

AsyncAPI 2.6 description of Nuclia's **ask / chat generative answer streaming** surface. Nuclia does not publish a WebSocket API. The only asynchronous / event-style transport d...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Nuclia API Rules

8 rules · 1 errors 7 warnings

SPECTRAL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Nuclia Authentication

apiKey/http · 3 schemes

SECURITY

Nuclia Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nuclia Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Agentic Access 1

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

Nuclia Agentic Access

23 operations · 14 acting

23 operations · 14 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: nuclia
url: https://raw.githubusercontent.com/api-evangelist/nuclia/refs/heads/main/apis.yml
name: Nuclia
kind: company
description: Nuclia is a RAG-as-a-Service / AI search platform (now part of Progress as Progress Agentic RAG). It ingests
  unstructured data - documents, files, audio, video, web pages and conversations - into Knowledge Boxes, automatically extracting,
  embedding and indexing it so applications can run hybrid (semantic, keyword, graph) search and get grounded generative answers
  through a regional REST API.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Paid (free trial) · 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/nuclia.png
tags:
- AI
- RAG
- Search
- Knowledge Base
- Unstructured Data
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: nuclia:nuclia-ask-api
  name: Nuclia Ask API
  description: Generative RAG answers, chat and summarization grounded in a Knowledge Box.
  humanURL: https://docs.nuclia.dev/docs/api
  baseURL: https://{zone}.nuclia.cloud/api/v1
  tags:
  - Ask
  properties:
  - type: OpenAPI
    url: openapi/nuclia-ask-api-openapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/management/knowledgebox/
  - type: APIReference
    url: https://docs.nuclia.dev/docs/api
  - type: PostmanCollection
    url: collections/nuclia.postman_collection.json
  - type: OpenCollection
    url: collections/nuclia.opencollection.json
  - type: Documentation
    url: https://docs.nuclia.dev/docs/ingestion/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/search-strategy/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/
  - type: AsyncAPI
    url: asyncapi/nuclia-asyncapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/understanding/intro
  - type: APIReference
    url: https://docs.nuclia.dev/docs/nua-api/
- aid: nuclia:nuclia-knowledge-boxes-api
  name: Nuclia Knowledge Boxes API
  description: Create, configure and inspect Knowledge Boxes and their label sets.
  humanURL: https://docs.nuclia.dev/docs/api
  baseURL: https://{zone}.nuclia.cloud/api/v1
  tags:
  - Knowledge Boxes
  properties:
  - type: OpenAPI
    url: openapi/nuclia-knowledge-boxes-api-openapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/management/knowledgebox/
  - type: APIReference
    url: https://docs.nuclia.dev/docs/api
  - type: PostmanCollection
    url: collections/nuclia.postman_collection.json
  - type: OpenCollection
    url: collections/nuclia.opencollection.json
  - type: Documentation
    url: https://docs.nuclia.dev/docs/ingestion/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/search-strategy/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/
  - type: AsyncAPI
    url: asyncapi/nuclia-asyncapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/understanding/intro
  - type: APIReference
    url: https://docs.nuclia.dev/docs/nua-api/
- aid: nuclia:nuclia-predict-api
  name: Nuclia Predict API
  description: Nuclia Understanding API (NUA) - generation, summarize, rephrase, rerank, embeddings and tokenization.
  humanURL: https://docs.nuclia.dev/docs/api
  baseURL: https://{zone}.nuclia.cloud/api/v1
  tags:
  - Predict
  properties:
  - type: OpenAPI
    url: openapi/nuclia-predict-api-openapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/management/knowledgebox/
  - type: APIReference
    url: https://docs.nuclia.dev/docs/api
  - type: PostmanCollection
    url: collections/nuclia.postman_collection.json
  - type: OpenCollection
    url: collections/nuclia.opencollection.json
  - type: Documentation
    url: https://docs.nuclia.dev/docs/ingestion/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/search-strategy/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/
  - type: AsyncAPI
    url: asyncapi/nuclia-asyncapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/understanding/intro
  - type: APIReference
    url: https://docs.nuclia.dev/docs/nua-api/
- aid: nuclia:nuclia-resources-api
  name: Nuclia Resources API
  description: Ingest and manage resources - files, text, links and conversations.
  humanURL: https://docs.nuclia.dev/docs/api
  baseURL: https://{zone}.nuclia.cloud/api/v1
  tags:
  - Resources
  properties:
  - type: OpenAPI
    url: openapi/nuclia-resources-api-openapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/management/knowledgebox/
  - type: APIReference
    url: https://docs.nuclia.dev/docs/api
  - type: PostmanCollection
    url: collections/nuclia.postman_collection.json
  - type: OpenCollection
    url: collections/nuclia.opencollection.json
  - type: Documentation
    url: https://docs.nuclia.dev/docs/ingestion/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/search-strategy/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/
  - type: AsyncAPI
    url: asyncapi/nuclia-asyncapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/understanding/intro
  - type: APIReference
    url: https://docs.nuclia.dev/docs/nua-api/
- aid: nuclia:nuclia-search-api
  name: Nuclia Search API
  description: Hybrid search, find (RAG retrieval) and suggest over a Knowledge Box.
  humanURL: https://docs.nuclia.dev/docs/api
  baseURL: https://{zone}.nuclia.cloud/api/v1
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/nuclia-search-api-openapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/management/knowledgebox/
  - type: APIReference
    url: https://docs.nuclia.dev/docs/api
  - type: PostmanCollection
    url: collections/nuclia.postman_collection.json
  - type: OpenCollection
    url: collections/nuclia.opencollection.json
  - type: Documentation
    url: https://docs.nuclia.dev/docs/ingestion/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/search-strategy/
  - type: Documentation
    url: https://docs.nuclia.dev/docs/rag/
  - type: AsyncAPI
    url: asyncapi/nuclia-asyncapi.yml
  - type: Documentation
    url: https://docs.nuclia.dev/docs/understanding/intro
  - type: APIReference
    url: https://docs.nuclia.dev/docs/nua-api/
common:
- type: AgenticAccess
  url: agentic-access/nuclia-agentic-access.yml
- type: TrustCenter
  url: security/nuclia-trust-center.yml
- type: DomainSecurity
  url: security/nuclia-domain-security.yml
- type: Authentication
  url: authentication/nuclia-authentication.yml
- type: GitHubOrganization
  url: https://github.com/nuclia
- type: LinkedIn
  url: https://www.linkedin.com/company/nuclia
- type: Website
  url: https://nuclia.com/
- type: Documentation
  url: https://docs.nuclia.dev/docs
- type: Plans
  url: plans/nuclia-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nuclia-rate-limits.yml
- type: FinOps
  url: finops/nuclia-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com