bitbybit-dev

Bitbybit provides a browser‑based 3D CAD and configurator platform that enables developers to create, render, and manipulate complex geometry using a rich TypeScript API. The service integrates multiple modeling kernels such as OpenCascade, JSCAD, Manifold, BabylonJS, Three.js and PlayCanvas, offering algorithms for shapes, boolean operations, meshing, curves, surfaces, and real‑time rendering. It also supplies cloud‑hosted editors, project galleries, and a marketplace of 3D models, targeting designers, engineers, and e‑commerce developers.

bitbybit-dev publishes 9 API contracts indexed on the APIs.io network, including CAD Operations API, Convert API, Files API, and 6 more. Tagged areas include 3D CAD, TypeScript, API, Platform, and Creative Coding.

The bitbybit-dev catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

bitbybit-dev’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

50.7/100 developing Agent 33/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 Agent Skills

3D CADTypeScriptAPIPlatformCreative CodingModeling

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 50.7/100 · developing

Contract Quality 14.2 / 21

Developer Ergonomics 10.4 / 17

Access Clarity 7.6 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 33/100 · agent ready

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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/bitbybit-dev/"><img src="https://apis.io/badge/bitbybit-dev/card.svg" alt="bitbybit-dev 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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Operational Transparency scores 5.3 — up to +12.3 composite points
Access Clarity scores 44.7 — up to +11.1 composite points
Contract Governance scores 22.0 — up to +9.4 composite points

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/bitbybit-dev/apis.yml: open an issue on github.com/api-evangelist/bitbybit-dev 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 →

APIs 9

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

bitbybit-dev CAD Operations API

The CAD Operations API from bitbybit-dev — 3 operation(s) for cad operations.

bitbybit-dev Convert API

The Convert API from bitbybit-dev — 4 operation(s) for convert.

bitbybit-dev Files API

The Files API from bitbybit-dev — 4 operation(s) for files.

bitbybit-dev Health API

The Health API from bitbybit-dev — 1 operation(s) for health.

bitbybit-dev Models API

The Models API from bitbybit-dev — 5 operation(s) for models.

bitbybit-dev Models - Dragon Cup API

The Models - Dragon Cup API from bitbybit-dev — 1 operation(s) for models - dragon cup.

bitbybit-dev Models - Phone Nest API

The Models - Phone Nest API from bitbybit-dev — 1 operation(s) for models - phone nest.

bitbybit-dev Sheet Metal API

The Sheet Metal API from bitbybit-dev — 5 operation(s) for sheet metal.

bitbybit-dev Tasks API

The Tasks API from bitbybit-dev — 6 operation(s) for tasks.

Scroll for all 9

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

execute-cad

AGENT SKILL

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Bitbybit Dev Context

89 classes · 186 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

bitbybit-dev API Rules

16 rules · 12 errors 3 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

FileUploadBody

4 properties

JSON SCHEMA

PipelineBody

3 properties

JSON SCHEMA

StepToGltfBody

6 properties

JSON SCHEMA

StepToGltfWithDracoBody

7 properties

JSON SCHEMA

UnfoldSolidBody

4 properties

JSON SCHEMA

UnfoldSolidToFlatBody

4 properties

JSON SCHEMA

Security Posture 2

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

Bitbybit Dev Authentication

1 scheme

SECURITY

Bitbybit Dev Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Bitbybit Dev Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Bitbybit Dev Agentic Access

32 operations · 22 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: bitbybit-dev
name: bitbybit-dev
description: Bitbybit provides a browser‑based 3D CAD and configurator platform that enables developers to create, render,
  and manipulate complex geometry using a rich TypeScript API. The service integrates multiple modeling kernels such as OpenCascade,
  JSCAD, Manifold, BabylonJS, Three.js and PlayCanvas, offering algorithms for shapes, boolean operations, meshing, curves,
  surfaces, and real‑time rendering. It also supplies cloud‑hosted editors, project galleries, and a marketplace of 3D models,
  targeting designers, engineers, and e‑commerce developers.
url: https://artifacts.apis.io/bitbybit-dev/apis.yml
image: https://bitbybit.dev/logo-gold-small.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-30'
tags:
- 3D CAD
- TypeScript
- API
- Platform
- Creative Coding
- Modeling
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/bitbybit-dev-agentic-access.yml
- type: Spectral
  url: rules/bitbybit-dev-rules.yml
- type: JSONLD
  url: json-ld/bitbybit-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/bitbybit-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/bitbybit-dev-data-model.yml
- type: Authentication
  url: authentication/bitbybit-dev-authentication.yml
- type: ErrorCatalog
  url: errors/bitbybit-dev-problem-types.yml
- type: Conformance
  url: conformance/bitbybit-dev-conformance.yml
- type: LLMsTxt
  url: llms/bitbybit-dev-llms.txt
- type: Hosts
  url: hosts/bitbybit-dev-hosts.yml
- type: Vendors
  url: vendors/bitbybit-dev-vendors.yml
- type: Packages
  url: packages/bitbybit-dev-packages.yml
- type: TermsOfService
  url: https://bitbybit.dev/terms-and-conditions
- type: SDKs
  url: https://learn.bitbybit.dev/api/sdk/typescript/files
- type: PrivacyPolicy
  url: https://bitbybit.dev/privacy-policy
- type: DomainSecurity
  url: security/bitbybit-dev-domain-security.yml
- type: Website
  url: https://bitbybit.dev/
- type: Documentation
  url: https://docs.bitbybit.dev/
- type: APIReference
  url: https://docs.bitbybit.dev/
- type: GettingStarted
  url: https://learn.bitbybit.dev/learn/intro
- type: Blog
  url: https://learn.bitbybit.dev/blog
- type: GitHubOrganization
  url: https://github.com/bitbybit-dev
- type: Pricing
  url: https://bitbybit.dev/auth/pick-plan
- type: SignUp
  url: https://bitbybit.dev/auth/sign-up
- type: Login
  url: https://bitbybit.dev/auth/login
- type: Postman
  url: https://www.postman.com/bitbybit-dev/workspace
apis:
- aid: bitbybit-dev:bitbybit-dev-cad-operations-api
  name: bitbybit-dev CAD Operations API
  description: The CAD Operations API from bitbybit-dev — 3 operation(s) for cad operations.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - CAD Operations
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-cad-operations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-convert-api
  name: bitbybit-dev Convert API
  description: The Convert API from bitbybit-dev — 4 operation(s) for convert.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Convert
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-convert-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-files-api
  name: bitbybit-dev Files API
  description: The Files API from bitbybit-dev — 4 operation(s) for files.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-files-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-health-api
  name: bitbybit-dev Health API
  description: The Health API from bitbybit-dev — 1 operation(s) for health.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-models-api
  name: bitbybit-dev Models API
  description: The Models API from bitbybit-dev — 5 operation(s) for models.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-models-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-models-dragon-cup-api
  name: bitbybit-dev Models - Dragon Cup API
  description: The Models - Dragon Cup API from bitbybit-dev — 1 operation(s) for models - dragon cup.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Models - Dragon Cup
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-models-dragon-cup-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-models-phone-nest-api
  name: bitbybit-dev Models - Phone Nest API
  description: The Models - Phone Nest API from bitbybit-dev — 1 operation(s) for models - phone nest.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Models - Phone Nest
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-models-phone-nest-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-sheet-metal-api
  name: bitbybit-dev Sheet Metal API
  description: The Sheet Metal API from bitbybit-dev — 5 operation(s) for sheet metal.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Sheet Metal
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-sheet-metal-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
- aid: bitbybit-dev:bitbybit-dev-tasks-api
  name: bitbybit-dev Tasks API
  description: The Tasks API from bitbybit-dev — 6 operation(s) for tasks.
  humanURL: https://learn.bitbybit.dev/api/api-reference
  baseURL: https://api.bitbybit.dev
  tags:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/bitbybit-dev-tasks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-with-draco-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-step-to-gltf-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-file-upload-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-pipeline-body-schema.json
  - type: JSONSchema
    url: json-schema/bitbybit-dev-unfold-solid-to-flat-body-schema.json
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 25
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

bitbybit-dev API — frequently asked questions

Does bitbybit-dev have an API?

Yes. APIs.io lists 9 APIs from bitbybit-dev, including bitbybit-dev CAD Operations API, bitbybit-dev Convert API and bitbybit-dev Files API, and 6 more.

Is there an OpenAPI specification for the bitbybit-dev API?

Yes. APIs.io indexes 9 OpenAPI specifications for bitbybit-dev, each linked for download from this page.

How do I authenticate with the bitbybit-dev API?

bitbybit-dev uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Bitbybit Dev Authentication.

Is the bitbybit-dev API ready for AI agents?

bitbybit-dev has a Kin Score of 50.7 out of 100 (developing) and an Agent Readiness score of 33.1 (agent-ready), scored by API Evangelist on 2026-10-31.

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/bitbybit-dev"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/bitbybit-dev/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/bitbybit-dev/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

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.

GitHub Google LinkedIn

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