Steel · Authentication Profile

Steel Dev Authentication

Authentication

Steel secures its APIs with apiKey across 1 declared security scheme, as derived from its OpenAPI definitions.

BrowserWeb AutomationScrapingAI AgentsOpen-Source
Methods: apiKey Schemes: 1 OAuth flows: API key in: header

Security Schemes

SteelApiKey apiKey
· in: header (Steel-Api-Key)

Source

Authentication Profile

Raw ↑
generated: '2026-07-11'
method: derived
source: openapi/steel-dev-openapi.yml
summary:
  types:
  - apiKey
  api_key_in:
  - header
schemes:
- name: SteelApiKey
  type: apiKey
  in: header
  parameter: Steel-Api-Key
  description: API key issued from app.steel.dev. Pass it in the `Steel-Api-Key` request header.
    Self-hosted instances may run without auth.
  sources:
  - openapi/steel-dev-openapi.yml

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/steel-dev-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.

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