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

42.9/100 developing ▬ flat Agent 21/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaidSelf serveFree trial⚡ Free to try

1 APIs

Artificial Intelligence RAG Search Knowledge Base Unstructured Data

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 42.9/100 · developing

Contract Quality 13.9 / 23

Developer Ergonomics 5.4 / 18

Access Clarity 8.5 / 18

Operational Transparency 4.0 / 12

Contract Governance 1.2 / 11

Discoverability 6.2 / 9

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

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.

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 · 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

Website

Website

Source (apis.yml)

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
tags_raw:
- AI
- RAG
- Search
- Knowledge Base
- Unstructured Data
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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