FirstSales · Authentication Profile

FirstSales Authentication

Authentication

Authentication schemes for FirstSales API

FirstSales declares 1 security scheme(s) across its OpenAPI definitions.

AI outbound salesCold EmailEmail Warm-upLead Generation
Methods: Schemes: 1 OAuth flows: API key in:

Security Schemes

Bearer http-bearer

Source

Authentication Profile

Raw ↑ 
generated: '2026-11-08'
method: searched
generator: extract-docs-artifacts.py (local)
source: https://developer.firstsales.io/docs/authentication
sources:
- https://developer.firstsales.io/docs/authentication
- https://developer.firstsales.io/docs/quickstart
description: Authentication schemes for FirstSales API
schemes:
- type: http-bearer
  name: Bearer
  evidence: Developer API requests use bearer authentication.
  location: header
  header: Authorization
  how_to_obtain: Create a Developer API key in FirstSales settings and export it as FIRSTSALES_API_KEY.
docs: https://developer.firstsales.io/docs/authentication

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/firstsales-io-authentication"
All security posture 
curl "https://apis.io/api/v1/security?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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.