Smartlead · Authentication Profile
Smartlead Ai Authentication
Authentication
Smartlead secures its APIs with apiKey across 1 declared security scheme, as derived from its OpenAPI definitions.
Cold EmailOutboundSalesDeliverabilityEmail Warm-upAutomationSequences
Methods: apiKey
Schemes: 1
OAuth flows:
API key in: query, body
Security Schemes
ApiKeyAuth apiKey
· in: query (api_key)
Source
Authentication Profile
generated: '2026-08-13'
method: searched
source: openapi/smartlead-ai-openapi.yml
docs: https://api.smartlead.ai/authentication
summary:
types:
- apiKey
api_key_in:
- query
- body
oauth2_flows: []
scopes: false
schemes:
- name: ApiKeyAuth
type: apiKey
in: query
parameter: api_key
description: |-
Your SmartLead API key. You can generate this from your dashboard under Settings > API Keys.
Include this as a query parameter in all API requests:
```
?api_key=YOUR_API_KEY
```
applied: >-
globally — the spec declares a root-level security requirement of [{ApiKeyAuth: []}]
sources:
- openapi/smartlead-ai-campaign-statistics-api-openapi.yml
- openapi/smartlead-ai-campaigns-api-openapi.yml
- openapi/smartlead-ai-openapi.yml
alternate_transport:
in: body
parameter: api_key
note: >-
The auth docs state that on POST/PATCH the key may instead be included as an `api_key` field in
the JSON request body. This is documented but is NOT modelled in the OpenAPI, which declares
only the query-parameter scheme.
issuance:
console: https://app.smartlead.ai
path: Profile icon -> Settings -> API Keys -> Generate New API Key
shown_once: true
rotation: >-
Keys can be regenerated from the dashboard. Agency accounts can additionally create, list,
reset and revoke per-client keys (see the CLI `clients` command group).
agency_scoped_keys: true
failure:
status: 401
body_shape: '{"success": false, ...}'
detail: errors/smartlead-ai-problem-types.yml
risk_notes:
- >-
The credential is carried in the URL query string on every request, including GETs. Query
strings are routinely recorded in proxy, CDN, load-balancer and web-server access logs, in
browser history, and in Referer headers — so the key is exposed anywhere the URL is logged.
SmartLead documents no header-based alternative.
- >-
Keys are account-wide bearer credentials with no scopes and no least-privilege model: any key
can read the master inbox, send email, import leads and manage mailboxes. SmartLead's own docs
say "your API key carries many privileges".
- >-
The one mitigation SmartLead does offer is agency key segmentation — a separate key per client
workspace, revocable independently.
not_supported:
- oauth2
- openIdConnect
- mutualTLS
- http bearer
- scopes / granular permissions
- key expiry or TTL (none documented)
related:
conventions: conventions/smartlead-ai-conventions.yml
conformance: conformance/smartlead-ai-conformance.yml
x-evidence:
- url: https://api.smartlead.ai/authentication
http_status: 200
fetched: '2026-08-13'
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