FormulaSignal · Authentication Profile

FormulaSignal Authentication

Authentication

FormulaSignal authenticates using an API key sent as a bearer token in the Authorization header, with an alternative plain header X-FormulaSignal-Key.

FormulaSignal declares 2 security scheme(s) across its OpenAPI definitions.

HealthSupplementsMonitoringConsumer AppNutrition
Methods: Schemes: 2 OAuth flows: API key in:

Security Schemes

FormulaSignal API Key http-bearer
FormulaSignal API Key (alternative header) apiKey

Source

Authentication Profile

Raw ↑ 
generated: '2026-11-08'
method: searched
generator: extract-docs-artifacts.py (local)
source: https://formulasignal.com/developers/keys
sources:
- https://formulasignal.com/developers/keys
- https://formulasignal.com/developers
- https://formulasignal.com/developers/mcp
description: FormulaSignal authenticates using an API key sent as a bearer token in the Authorization header, with an alternative plain header
  X-FormulaSignal-Key.
schemes:
- type: http-bearer
  name: FormulaSignal API Key
  evidence: 'curl -s https://formulasignal.com/api/v1/products/resolve \ -H "Authorization: Bearer $FORMULASIGNAL_API_KEY" \ -H "Content-Type:
    application/json" \ -d ''{"identifier":"C4 Original"}'''
  location: header
  header: Authorization
  how_to_obtain: Get a free API key via the developer portal; the key is shown once after you provide an email address and follow the sign‑in
    link.
- type: apiKey
  name: FormulaSignal API Key (alternative header)
  evidence: If your client rejects Authorization , send the key as X-FormulaSignal-Key with no Bearer prefix.
  location: header
  header: X-FormulaSignal-Key
  how_to_obtain: Get a free API key via the developer portal; the key is shown once after you provide an email address and follow the sign‑in
    link.
note: No OAuth2 flows, JWT, HMAC, MTLS, or other authentication methods are documented.
docs: https://formulasignal.com/developers/keys

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