For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
  • Getting Started
    • Introduction
    • How Verifa Works
    • Quickstart
    • Choosing an Integration Method
  • Use Cases
    • KYC Onboarding
    • Age Verification
    • AML Compliance
    • Fraud Prevention
    • Marketplace Trust & Safety
  • Core Concepts
    • Overview
    • Sessions
    • Verifications & Checks
    • Workflows
    • Identities
    • Cases
    • Screening & Reports
    • Lists
  • Integration Guides
    • Overview
    • JavaScript SDK
    • Web Capture Flow
    • API-Only Integration
    • Mobile SDK
    • Webhooks Guide
    • MCP Server
    • Migrating from Persona
  • API Details
    • Overview
    • Authentication
    • Pagination
    • Rate Limiting
    • Versioning
    • Errors
    • Webhooks
    • Idempotency
    • Key Inflection
    • Data Access
    • Data Retention
  • Tutorials
    • Creating Your First Verification Session
    • Creating a Workflow
    • Receiving Webhooks & Validating Signatures
    • Handling Webhook Events
    • Custom Document Types & AI Extraction
  • Best Practices
    • Testing
    • Preventing Duplicates
    • Fraud Signals
    • Changelog
  • API Reference
      • GETList sessions
      • POSTCreate a verification session
      • GETGet a session
      • PATCHUpdate a session
      • POSTResume a session
      • POSTResend the invitation email
      • POSTExpire a session
      • POSTSimulate a session action (sandbox only)
      • GETGet session result
      • DELRedact session data
      • GETExport session data (GDPR Art. 15 DSAR)
      • POSTBulk redact sessions
      • POSTSubmit a session for verification
      • POSTAdd a tag to a session
      • POSTRemove a tag from a session
      • POSTReplace all tags on a session
      • POSTGenerate a one-time verification link
      • GETList one-time links for a session
      • GETList verification checks
      • POSTRetry a failed verification check
      • GETList verification attempts
      • GETGenerate PDF verification report
      • POSTSubmit external gate decision
      • POSTReprocess a session
      • GETList webhook deliveries for a session
      • GETGet session risk assessment
API ReferenceSessions

Add a tag to a session

POST
https://devapi.withverifa.com/api/v1/sessions/:session_id/add-tag
POST
/api/v1/sessions/:session_id/add-tag
$curl -X POST https://devapi.withverifa.com/api/v1/sessions/session_id/add-tag \
>     -H "X-API-Key: <apiKey>" \
>     -H "Content-Type: application/json" \
>     -d '{
>  "tag": "vip"
>}'
1{
2  "id": "string",
3  "tags": [
4    "string"
5  ]
6}

Adds a tag to the session. No-op if the tag already exists. Tags are free-form strings useful for categorization and filtering.

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Built with

Authentication

X-API-Keystring

Organization API key. Keys are prefixed with vk_live_ (production) or vk_sandbox_ (sandbox).

Path parameters

session_idstringRequired

Headers

Verifa-VersiondateOptional

API version date string (e.g. 2026-02-01). If omitted, the version pinned to your API key is used.

Request

This endpoint expects an object.
tagstringRequired

Response

Updated session with tags.
idstring
tagslist of strings

Errors

401
Unauthorized Error
404
Not Found Error