weclapp

weclapp is a German cloud ERP / CRM / commerce platform for small and mid-sized businesses, combining CRM, sales, order management, accounting, inventory / warehouse management, purchasing, and e-commerce in one SaaS suite. Every weclapp tenant exposes a documented REST API at https://.weclapp.com/webapp/api/v1/ with a live Swagger, covering 150+ business entities - parties (customers, suppliers, contacts, leads), articles, sales orders, quotations, sales invoices, shipments, purchase orders, warehouses, and more. Authentication is a per-user API token sent in the AuthenticationToken request header.

weclapp publishes 7 APIs on the APIs.io network, including Article API, Customer API, Purchase Order API, and 4 more. Tagged areas include ERP, CRM, Cloud ERP, Accounting, and Inventory.

weclapp’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.0/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serveFree trial⚡ Free to try

1 APIs

ERP CRM Cloud ERP Accounting Inventory Commerce Germany Order Management Business Software Software-as-a-Service

Kin Score

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

Composite quality — 36.0/100 · thin

Contract Quality 11.9 / 23

Developer Ergonomics 5.4 / 18

Access Clarity 7.1 / 18

Operational Transparency 2.5 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

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 0 / 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/weclapp: 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 7

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

weclapp Article API

Articles / products in the catalog.

weclapp Customer API

Customer master data (a party in the customer role).

weclapp Purchase Order API

Purchase orders to suppliers.

weclapp Quotation API

Sales quotations / quotes.

weclapp Sales Invoice API

Sales invoices.

weclapp Sales Order API

Sales orders.

weclapp Shipment API

Outbound shipments / deliveries.

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

weclapp REST Article API

OPEN COLLECTION

weclapp REST Article Customer API

OPEN COLLECTION

weclapp REST Article Purchase Order API

OPEN COLLECTION

weclapp REST Article Quotation API

OPEN COLLECTION

weclapp REST Article Sales Invoice API

OPEN COLLECTION

weclapp REST Article Sales Order API

OPEN COLLECTION

weclapp REST Article Shipment API

OPEN COLLECTION

weclapp REST API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Weclapp Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Weclapp Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Weclapp Finops

FINOPS

Security Posture 2

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

Weclapp Authentication

apiKey · 1 scheme

SECURITY

Weclapp Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Weclapp Agentic Access

42 operations · 21 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

Access & Security 2

Authentication, authorization, and security posture

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

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: weclapp
url: https://raw.githubusercontent.com/api-evangelist/weclapp/refs/heads/main/apis.yml
name: weclapp
kind: company
description: weclapp is a German cloud ERP / CRM / commerce platform for small and mid-sized businesses, combining CRM, sales,
  order management, accounting, inventory / warehouse management, purchasing, and e-commerce in one SaaS suite. Every weclapp
  tenant exposes a documented REST API at https://<tenant>.weclapp.com/webapp/api/v1/ with a live Swagger, covering 150+ business
  entities - parties (customers, suppliers, contacts, leads), articles, sales orders, quotations, sales invoices, shipments,
  purchase orders, warehouses, and more. Authentication is a per-user API token sent in the AuthenticationToken request header.
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: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/weclapp.png
tags:
- ERP
- CRM
- Cloud ERP
- Accounting
- Inventory
- Commerce
- Germany
- Order Management
- Business Software
- Software-as-a-Service
tags_raw:
- ERP
- CRM
- Cloud ERP
- Accounting
- Inventory
- Commerce
- Germany
- Order Management
- Business Software
- SaaS
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.23'
apis:
- aid: weclapp:weclapp-article-api
  name: weclapp Article API
  description: Articles / products in the catalog.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Article
  properties:
  - type: OpenAPI
    url: openapi/weclapp-article-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-customer-api
  name: weclapp Customer API
  description: Customer master data (a party in the customer role).
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Customers
  tags_raw:
  - Customer
  properties:
  - type: OpenAPI
    url: openapi/weclapp-customer-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-purchase-order-api
  name: weclapp Purchase Order API
  description: Purchase orders to suppliers.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Purchase Order
  properties:
  - type: OpenAPI
    url: openapi/weclapp-purchase-order-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-quotation-api
  name: weclapp Quotation API
  description: Sales quotations / quotes.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Quotation
  properties:
  - type: OpenAPI
    url: openapi/weclapp-quotation-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-sales-invoice-api
  name: weclapp Sales Invoice API
  description: Sales invoices.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Sales Invoice
  properties:
  - type: OpenAPI
    url: openapi/weclapp-sales-invoice-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-sales-order-api
  name: weclapp Sales Order API
  description: Sales orders.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Sales Order
  properties:
  - type: OpenAPI
    url: openapi/weclapp-sales-order-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
- aid: weclapp:weclapp-shipment-api
  name: weclapp Shipment API
  description: Outbound shipments / deliveries.
  humanURL: https://www.weclapp.com/api/
  baseURL: https://{tenant}.weclapp.com/webapp/api/v1
  tags:
  - Shipment
  properties:
  - type: OpenAPI
    url: openapi/weclapp-shipment-api-openapi.yml
  - type: Documentation
    url: https://www.weclapp.com/api/
  - type: APIReference
    url: https://www.weclapp.com/api/
  - type: PostmanCollection
    url: collections/weclapp.postman_collection.json
  - type: OpenCollection
    url: collections/weclapp.opencollection.json
common:
- type: CapabilityMap
  url: capabilities/weclapp-capability-edges.yml
  name: weclapp Business Capability Map
- type: AgenticAccess
  url: agentic-access/weclapp-agentic-access.yml
- type: DomainSecurity
  url: security/weclapp-domain-security.yml
- type: Authentication
  url: authentication/weclapp-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/weclapp
- type: Website
  url: https://www.weclapp.com/
- type: Documentation
  url: https://www.weclapp.com/api/
- type: Plans
  url: plans/weclapp-plans-pricing.yml
- type: RateLimits
  url: rate-limits/weclapp-rate-limits.yml
- type: FinOps
  url: finops/weclapp-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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