Onshape
Onshape is a cloud-native computer-aided design (CAD) and product data management (PDM) platform, part of PTC, that runs entirely in a web browser with real-time collaboration, versioning, and configurations. Its public REST API (OpenAPI 3.0.1, base https://cad.onshape.com/api/v16) exposes documents, workspaces, versions and microversions, Part Studios, parts, assemblies, drawings, metadata, translations (CAD import/export), release management, and webhooks. Authentication is via OAuth 2.0 or HMAC-signed API keys, with offset/limit pagination and per-endpoint plus annual API call limits. Onshape was surfaced as an a16z portfolio company and enriched with its real developer surface by the API Evangelist pipeline.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Onshape the way a machine reads it — 93 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Onshape scores 51.0/100 (developing), with a separate agent-readiness read of 37/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Onshape's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/onshape/"
title="Onshape on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/onshape.svg"
alt="Onshape Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/onshape/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/onshape/"
title="Onshape on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/onshape/card.svg"
alt="Onshape Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Onshape
Each block below is one kind of artifact we hold for Onshape. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 42
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Onshape Account API
Manage user purchases, subscriptions, and consumables.
Onshape Alias API
Create and manage enterprise aliases. (Enterprise admins only.)
Onshape APIApplication API
Manage application preferences.
Onshape AppAssociativeData API
Manage the application-specific metadata that associates application data with Onshape data.
Onshape AppElement API
Access and modify application elements.
Onshape Assembly API
Create and manage assemblies.
Onshape Billing API
Get billing plan data for applications.
Onshape BlobElement API
Create, modify, and translate blob elements.
Onshape Comment API
Create, read, update, and delete comments.
Onshape Company API
Access company information.
Onshape Document API
Create and manage documents.
Onshape Drawing API
Access, create, and translate drawings.
Onshape Element API
Access and manage Elements. Every Element in an Onshape document is represented by a tab.
Onshape ExportRule API
Access valid export rules.
Onshape FeatureStudio API
Access and manage Feature Studio Elements.
Onshape Folder API
Access and modify folder sharing permissions.
Onshape Insertable API
Access the list of things that can be inserted into a document.
Onshape Item API
Manage non-geometric [items](https://cad.onshape.com/help/Content/Plans/items.htm). (Professional, Educator, and Enterprise accounts only.)
Onshape Material API
Work with the Onshape Material Library.
Onshape Metadata API
Access and modify metadata.
Onshape MetadataCategory API
Access properties associated with metadata categories.
Onshape NumberingScheme API
Manage the set of valid part numbers.
Onshape OpenApi API
Get the OpenAPI specification for the Onshape API.
Onshape Part API
Export Parts and access Part details.
Onshape PartNumber API
Create valid part numbers.
Onshape PartStudio API
Access and modify Part Studios.
Onshape ProductStructure API
Access information on how entities are structured within designs and documents.
Onshape PropertiesTableTemplate API
Create, access, and delete templates for properties tables.
Onshape Publication API
Access publication information.
Onshape ReleasePackage API
Endpoints for creating , updating, and managing releases. See [API Guide: Release Management](https://onshape-public.github.io/docs/api-adv/relmgmt/).
Onshape Revision API
Get revision information. See [API Guide: Release Management](https://onshape-public.github.io/docs/api-adv/relmgmt/)
Onshape Sketch API
Access sketch information.
Onshape StandardContent API
Work with Onshape standard content.
Onshape Task API
Create, access, and modify Tasks and Action Items.
Onshape Team API
Access team information.
Onshape Thumbnail API
Access, modify, and delete thumbnails.
Onshape Translation API
Import and export Onshape surfaces, parts, Part Studios, Assemblies, and subassemblies to/from other file formats (STL, PARASOLID, etc).
Onshape User API
Access user information.
Onshape Variables API
Create, modify, and access variables.
Onshape Version API
Get all versions of the Onshape REST APIs.
Onshape Webhook API
Create and manage [webhooks](https://onshape-public.github.io/docs/app-dev/webhook/).
Onshape Workflow API
Access and modify workflows.
Scroll within the panel for all 42 ·
Open Collections 43
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONOnshape REST Account API
OPEN COLLECTIONOnshape REST Account Alias API
OPEN COLLECTIONOnshape REST Account APIApplication API
OPEN COLLECTIONOnshape REST Account AppAssociativeData API
OPEN COLLECTIONOnshape REST Account AppElement API
OPEN COLLECTIONOnshape REST Account Assembly API
OPEN COLLECTIONOnshape REST Account Billing API
OPEN COLLECTIONOnshape REST Account BlobElement API
OPEN COLLECTIONOnshape REST Account Comment API
OPEN COLLECTIONOnshape REST Account Company API
OPEN COLLECTIONOnshape REST Account Document API
OPEN COLLECTIONOnshape REST Account Drawing API
OPEN COLLECTIONOnshape REST Account Element API
OPEN COLLECTIONOnshape REST Account ExportRule API
OPEN COLLECTIONOnshape REST Account FeatureStudio API
OPEN COLLECTIONOnshape REST Account Folder API
OPEN COLLECTIONOnshape REST Account Insertable API
OPEN COLLECTIONOnshape REST Account Item API
OPEN COLLECTIONOnshape REST Account Material API
OPEN COLLECTIONOnshape REST Account Metadata API
OPEN COLLECTIONOnshape REST Account MetadataCategory API
OPEN COLLECTIONOnshape REST Account NumberingScheme API
OPEN COLLECTIONOnshape REST Account OpenApi API
OPEN COLLECTIONOnshape REST Account Part API
OPEN COLLECTIONOnshape REST Account PartNumber API
OPEN COLLECTIONOnshape REST Account PartStudio API
OPEN COLLECTIONOnshape REST Account ProductStructure API
OPEN COLLECTIONOnshape REST Account PropertiesTableTemplate API
OPEN COLLECTIONOnshape REST Account Publication API
OPEN COLLECTIONOnshape REST Account ReleasePackage API
OPEN COLLECTIONOnshape REST Account Revision API
OPEN COLLECTIONOnshape REST Account Sketch API
OPEN COLLECTIONOnshape REST Account StandardContent API
OPEN COLLECTIONOnshape REST Account Task API
OPEN COLLECTIONOnshape REST Account Team API
OPEN COLLECTIONOnshape REST Account Thumbnail API
OPEN COLLECTIONOnshape REST Account Translation API
OPEN COLLECTIONOnshape REST Account User API
OPEN COLLECTIONOnshape REST Account Variables API
OPEN COLLECTIONOnshape REST Account Version API
OPEN COLLECTIONOnshape REST Account Webhook API
OPEN COLLECTIONOnshape REST Account Workflow API
OPEN COLLECTIONScroll within the panel for all 43 ·
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Onshape Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Onshape Events Webhooks
ASYNCAPISecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Onshape — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 7
Authentication, authorization, and security posture
Scroll within the panel for all 7 ·
Operate 5
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/onshape · machine-readable index on apis.io
This is an independent, third-party profile of Onshape, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.