Huly website screenshot

Huly

Huly is an open-source, all-in-one project management and team collaboration platform (an alternative to Linear, Jira, Slack, and Notion) built around modules like Tracker and Documents. Programmatic access is delivered primarily as a Node.js SDK (@hcengineering/api-client) that connects to the platform transactor over WebSocket or REST, rather than a broad public HTTP API. Huly is available as free, self-hostable open source (github.com/hcengineering) and as managed Huly Cloud.

Huly publishes 4 API contracts indexed on the APIs.io network, including Platform SDK, Cloud, Tracker, and 1 more. Tagged areas include Project Management, Collaboration, Open Source, Productivity, and SDK.

Huly’s developer surface includes engineering blog, documentation, and 7 more developer resources.

19.1/100 emerging ▬ flat Agent 14/100 agent aware Front door AI 2/6 trace Heartbeat 44/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
AccessFreemium
1 published contract
Project ManagementCollaborationOpen SourceProductivitySDK

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site. Kin Score badge preview for Huly It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/huly/"><img src="https://apis.io/badge/huly/card.svg" alt="Huly on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
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
  • Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
  • Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
  • 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
11 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/huly/apis.yml: open an issue on github.com/api-evangelist/huly 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 →

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.

measured — observed by APIs.io (published)

APIs 4

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

Huly Platform SDK

The @hcengineering/api-client Node.js package provides typed programmatic access to the Huly Platform. It exposes a WebSocket client (connect) holding a persistent transactor co...

Huly Cloud

Managed, hosted Huly offered as Huly Cloud with usage-tiered workspaces (Common, Rare, Epic, Legendary, and custom Enterprise plans). Cloud workspaces run the same platform and ...

Huly Tracker

Tracker is Huly's project and issue management module (subtasks, milestones, templates, custom workflows) with optional two-way GitHub Issues/Projects sync. Issues, projects, an...

Huly Documents

Documents is Huly's collaborative knowledge-management module for rich-text documents with code blocks and real-time editing. Document content is modeled as platform markup and ...

Open Collections 1

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

Huly Platform API

OPEN COLLECTION

Huly API pricing

Not yet checked against Huly's own pricing page. Compiled by API Evangelist on 2026-06-21 from huly.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

PlanPrice
Open Source (Self-Hosted) free —
Common usage —
Rare usage —
Epic usage —
Legendary usage —
Enterprise (Custom) enterprise —

Plan details, limits and sources →

Rate limits

Compiled by API Evangelist, not yet checked against Huly's documentation. All 4 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Huly Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Huly Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Huly Finops

FINOPS

Security Posture 1

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

Huly Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: huly
url: https://raw.githubusercontent.com/api-evangelist/huly/refs/heads/main/apis.yml
name: Huly
kind: company
description: Huly is an open-source, all-in-one project management and team collaboration platform (an alternative to Linear,
  Jira, Slack, and Notion) built around modules like Tracker and Documents. Programmatic access is delivered primarily as
  a Node.js SDK (@hcengineering/api-client) that connects to the platform transactor over WebSocket or REST, rather than a
  broad public HTTP API. Huly is available as free, self-hostable open source (github.com/hcengineering) and as managed Huly
  Cloud.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/huly.png
tags:
- Project Management
- Collaboration
- Open Source
- Productivity
- SDK
tags_raw:
- Project Management
- Collaboration
- Open Source
- Productivity
- SDK
- Open-Source
created: '2026-06-21'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: huly:huly-platform-sdk
  name: Huly Platform SDK
  tags:
  - SDK
  - Platform
  - WebSocket
  - REST
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://github.com/hcengineering/huly.core/blob/main/packages/api-client/README.md
  baseURL: https://github.com/hcengineering/huly.core
  properties:
  - url: https://github.com/hcengineering/huly.core/blob/main/packages/api-client/README.md
    type: Documentation
  - url: https://github.com/hcengineering/huly-examples/tree/main/platform-api
    type: APIReference
  - url: openapi/_original/huly-openapi.yml
    type: OpenAPI
  description: The @hcengineering/api-client Node.js package provides typed programmatic access to the Huly Platform. It exposes
    a WebSocket client (connect) holding a persistent transactor connection and a REST client (connectRest), both authenticated
    by email/password or token, with document operations such as findOne, findAll, createDoc, updateDoc, and removeDoc. There
    is no broadly documented public HTTP REST API with stable URL paths; access is intended through this SDK.
- aid: huly:huly-cloud
  name: Huly Cloud
  tags:
  - Cloud
  - Software-as-a-Service
  - Hosting
  tags_raw:
  - Cloud
  - SaaS
  - Hosting
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://huly.io/
  properties:
  - url: https://docs.huly.io/
    type: Documentation
  - url: https://docs.huly.io/getting-started/api-tools/
    type: APIReference
  - url: openapi/_original/huly-openapi.yml
    type: OpenAPI
  description: Managed, hosted Huly offered as Huly Cloud with usage-tiered workspaces (Common, Rare, Epic, Legendary, and
    custom Enterprise plans). Cloud workspaces run the same platform and are reachable programmatically through the Huly Platform
    SDK against the hosted account and transactor services.
- aid: huly:huly-tracker
  name: Huly Tracker
  tags:
  - Issue Tracking
  - Project Management
  - Agile
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://huly.io/
  baseURL: https://github.com/hcengineering/huly.core
  properties:
  - url: https://docs.huly.io/
    type: Documentation
  - url: https://github.com/hcengineering/huly-examples/tree/main/platform-api
    type: APIReference
  - url: openapi/_original/huly-openapi.yml
    type: OpenAPI
  description: Tracker is Huly's project and issue management module (subtasks, milestones, templates, custom workflows) with
    optional two-way GitHub Issues/Projects sync. Issues, projects, and related objects are accessed programmatically as platform
    documents through the Huly Platform SDK rather than via a dedicated public REST API.
- aid: huly:huly-documents
  name: Huly Documents
  tags:
  - Documents
  - Knowledge Management
  - Collaboration
  tags_raw:
  - Documents
  - Knowledge Management
  - Collaboration
  - Knowledge-Management
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://huly.io/
  baseURL: https://github.com/hcengineering/huly.core
  properties:
  - url: https://docs.huly.io/
    type: Documentation
  - url: https://github.com/hcengineering/huly-examples/tree/main/platform-api
    type: APIReference
  - url: openapi/_original/huly-openapi.yml
    type: OpenAPI
  description: Documents is Huly's collaborative knowledge-management module for rich-text documents with code blocks and
    real-time editing. Document content is modeled as platform markup and accessed through the Huly Platform SDK's document
    and collaborative markup operations rather than a standalone public REST API.
common:
- url: https://huly.io/blog
  type: Blog
- type: DomainSecurity
  url: security/huly-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/hcengineering
- type: LinkedIn
  url: https://www.linkedin.com/company/hardcoreeng
- type: Website
  url: https://huly.io/
- type: Documentation
  url: https://docs.huly.io/
- type: Plans
  url: plans/huly-plans-pricing.yml
- type: RateLimits
  url: rate-limits/huly-rate-limits.yml
- type: FinOps
  url: finops/huly-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Huly API — frequently asked questions

Does Huly have an API?

Yes. APIs.io lists 4 APIs from Huly, including Huly Platform SDK, Huly Cloud and Huly Tracker, and 1 more.

Is there an OpenAPI specification for the Huly API?

Yes. APIs.io indexes 4 OpenAPI specifications for Huly, each linked for download from this page.

How much does the Huly API cost?

APIs.io lists 6 pricing plans for Huly, with each plan's price, limits and inclusions under Pricing on this page.

Is the Huly API ready for AI agents?

Huly has a Kin Score of 19.1 out of 100 (emerging) and an Agent Readiness score of 13.6 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
  • get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
  • get_provider_ratingPRO — composite, band, trend and facet scores.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This provider
curl "https://apis.io/api/v1/providers/huly"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/huly/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/huly/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.