AppZen · Authentication Profile

Appzen Authentication

Authentication

AppZen secures its APIs with apiKey across 3 declared security schemes, as derived from its OpenAPI definitions.

CompanyFinanceAccounts PayableExpense ManagementInvoice ProcessingSpend AuditArtificial IntelligenceERP Integration

Methods: apiKey Schemes: 3 OAuth flows: API key in: header

Security Schemes

API Key Header apiKey

· in: header (x-api-key)

Customer Id Header apiKey

· in: header (customer-id)

Customer Key Header apiKey

· in: header (customer-key)

Source

Authentication Profile

generated: '2026-07-18'
method: searched
source: openapi/appzen-autonomous-ap-openapi-original.yml
docs: https://support.appzen.com/hc/en-us/articles/12905088759571-Authentication-Overview
guidelines: https://api-docs.appzen.com/api_guidelines.html
summary:
  types:
  - apiKey
  api_key_in:
  - header
  notes: >-
    AppZen's Autonomous AP public APIs use API-key header authentication. Three
    values, all issued by the AppZen Support team, must be sent on every request:
    x-api-key, customer-id, and customer-key. The docs describe the model as
    "API key-based authentication (OAuth1.0)". Every response returns an
    x-correlation-id header to be quoted to AppZen support when troubleshooting.
schemes:
- name: API Key Header
  type: apiKey
  in: header
  parameter: x-api-key
  description: API key issued by AppZen Support.
  sources:
  - openapi/appzen-autonomous-ap-openapi-original.yml
- name: Customer Id Header
  type: apiKey
  in: header
  parameter: customer-id
  description: Customer identifier issued by AppZen Support.
  sources:
  - openapi/appzen-autonomous-ap-openapi-original.yml
- name: Customer Key Header
  type: apiKey
  in: header
  parameter: customer-key
  description: Customer key issued by AppZen Support.
  sources:
  - openapi/appzen-autonomous-ap-openapi-original.yml
response_headers:
- name: x-correlation-id
  description: Present on every response (success and failure); provide to AppZen Support for troubleshooting.

Work with this as data

Every security artifact 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 security posture

4 MCP tools reach this

find_securityBrowse and filter every security artifact in the catalog.
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 security artifact

curl "https://apis.io/api/v1/security/appzen-authentication"

All security posture

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

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

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

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