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 Artificial Intelligence, 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
40.2/100 developing ▬ flat Agent 21/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
AccessPaidSelf serveFree trial⚡ Free to try
1 APIs
Artificial IntelligenceRAGSearchKnowledge BaseUnstructured DataReal-Time

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 40.2/100 · developing
Contract Quality 10.6 / 19
Developer Ergonomics 4.5 / 15
Access Clarity 6.6 / 15
Operational Transparency 3.0 / 10
Contract Governance 1.0 / 9
Discoverability 5.0 / 8
Regulatory Posture 2.3 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 21/100 · 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 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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 7

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

API Collection

OPEN COLLECTION

Nuclia RAG-as-a-Service Ask API

OPEN COLLECTION

Nuclia RAG-as-a-Service Ask Knowledge Boxes API

OPEN COLLECTION

Nuclia RAG-as-a-Service Ask Predict API

OPEN COLLECTION

Nuclia RAG-as-a-Service Ask Resources API

OPEN COLLECTION

Nuclia RAG-as-a-Service Ask Search API

OPEN COLLECTION

Nuclia RAG-as-a-Service API

OPEN COLLECTION

Scroll for all 7

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 · 12 acting

23 operations · 12 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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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
  - url: https://nuclia.com/
    status: 301
    note: declared website redirects to https://www.progress.com/agentic-rag — a different registrable domain (nuclia.com
      -> progress.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nuclia.png
tags:
- Artificial Intelligence
- RAG
- Search
- Knowledge Base
- Unstructured Data
- Real-Time
tags_raw:
- AI
- RAG
- Search
- Knowledge Base
- Unstructured Data
- Real-Time
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
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

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