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 API contracts indexed 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 engineering blog, authentication, documentation, and 10 more developer resources.

🌐 Visit website📡 Profile data on GitHub
32.4/100 thin ▬ flat Agent 20/100 agent aware Front door AI 6/6 dominant Heartbeat 88/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
AccessPaidSelf serveFree trial⚡ Free to try
1 published contract
Artificial IntelligenceRAGSearchKnowledge BaseUnstructured DataReal-Time

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Information & Data Management
BC-610
AskPredict
POST /v1/predict/chat GET /v1/predict/sentence GET /v1/predict/models POST /v1/kb/{kbid}/ask

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
Composite quality — 32.4/100 · thin
Contract Quality 10.6 / 19
Developer Ergonomics 4.8 / 15
Access Clarity 2.4 / 15
Operational Transparency 1.0 / 10
Contract Governance 1.0 / 9
Discoverability 5.0 / 8
Regulatory Posture 2.3 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 20/100 · 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
Pagination 0 / 5
Distinct Operations 3 / 3
MCP Tool Quality 6 / 6
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/.
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Agent readiness — checks not met, largest first (exact, from this profile):
  • MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
  • Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
  • Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
  • Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
9 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.
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 the provider profile at artifacts.apis.io/nuclia/apis.yml: open an issue on github.com/api-evangelist/nuclia to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

MarketPositionDepthRegistered MCP serverDeclares compatibility
Hugging Face Hub Organisations builds-on 19.7 (thin) - -

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI
measured — observed by APIs.io (published)

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 6

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

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

Nuclia API pricing

Not yet checked against Nuclia's own pricing page. Compiled by API Evangelist on 2026-06-20 from nuclia.com/pricing/; confirm before you rely on a figure.

PlanPrice
Starter subscription —
Pro subscription —
Enterprise enterprise —

Plan details, limits and sources →

Rate limits

Compiled by API Evangelist, not yet checked against Nuclia's documentation. All 5 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Nuclia

SLA

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 — asyncapi 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 3

The organization behind the API

Blog
Blog
 LinkedIn
LinkedIn
 Website
Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap

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
  gated: none
  gated_source:
  - onboarding
  label: Paid (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - 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: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nuclia.png
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
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: '2026-10-06'
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:
- url: https://www.progress.com/blogs
  type: Blog
- type: CapabilityMap
  url: capabilities/nuclia-capability-edges.yml
  name: Nuclia Business Capability Map
- 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

Nuclia API — frequently asked questions

Does Nuclia have an API?

Yes. APIs.io lists 5 APIs from Nuclia, including Nuclia Ask API, Nuclia Knowledge Boxes API and Nuclia Predict API, and 2 more.

Is there an OpenAPI specification for the Nuclia API?

Yes. APIs.io indexes 5 OpenAPI specifications for Nuclia, each linked for download from this page.

How do I authenticate with the Nuclia API?

Nuclia uses bearer-token authentication (apiKey/http · 3 schemes). The details are profiled on APIs.io as Nuclia Authentication.

How much does the Nuclia API cost?

APIs.io lists 3 pricing plans for Nuclia, with each plan's price, limits and inclusions under Pricing on this page.

Is the Nuclia API ready for AI agents?

Nuclia has a Kin Score of 32.4 out of 100 (thin) and an Agent Readiness score of 20.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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