aid: justt
name: Justt
description: Justt is an AI-native chargeback management and dispute-representment platform for high-volume
  merchants. Its Dynamic Arguments engine assembles evidence-backed representment packages for card disputes
  across 30+ payment service providers (Stripe, Adyen, PayPal, Braintree, Checkout.com, Worldpay, Chase
  Paymentech, Nuvei and others), and it also handles pre-chargeback alerts from Ethoca, Verifi CDRN and
  RDR. Justt publishes a public developer portal at developers.justt.ai with three OpenAPI definitions
  — a REST API for chargebacks, transactions, evidence, files, merchants and integrations; a Pre-Chargeback
  Alerts API; and an OpenAPI 3.1 webhook-events specification covering eleven signed event types — plus
  an RFC 9727 /.well-known/api-catalog, an llms.txt documentation index, a sandbox environment, and a
  Vanta-hosted trust center.
url: https://raw.githubusercontent.com/api-evangelist/justt/refs/heads/main/apis.yml
image: https://justt.ai/wp-content/uploads/2025/03/blog-7-1.jpg
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-23'
modified: '2026-08-23'
tags:
- Company
- Payments
- Chargebacks
- Disputes
- Fraud
- Risk
- Financial Services
- E-Commerce
- Artificial Intelligence
- Webhooks
apis:
- aid: justt:rest-api
  name: Justt REST API
  description: The Justt REST API lets merchants read and manage chargebacks, enrich them with transaction
    data and evidence files, decide whether Justt should fight or accept a dispute, manage merchants and
    PSP integrations, record pre-chargeback alert outcomes, and request data-subject removal. Bearer API-key
    authentication over HTTPS; JSON request and response bodies.
  humanURL: https://developers.justt.ai/reference
  baseURL: https://api.justt.ai/v1
  image: https://justt.ai/wp-content/uploads/2025/03/blog-7-1.jpg
  tags:
  - Chargebacks
  - Disputes
  - Payments
  - Evidence
  - Merchants
  properties:
  - type: OpenAPI
    url: openapi/justt-rest-api-openapi-original.json
  - type: Documentation
    url: https://developers.justt.ai/docs/getting-started
  - type: APIReference
    url: https://developers.justt.ai/reference
- aid: justt:pre-chargeback-alerts
  name: Justt Pre-Chargeback Alerts API
  description: Justt official REST API for pre-chargeback alerts. Retrieve alerts sourced from Ethoca,
    Verifi CDRN and RDR by search criteria or by id, so a merchant can refund or resolve a transaction
    before it becomes a chargeback.
  humanURL: https://developers.justt.ai/reference/alertcontroller_findall
  baseURL: https://api.justt.ai/v1
  tags:
  - Pre-Chargeback Alerts
  - Prevention
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/justt-pre-chargeback-alerts-openapi-original.json
  - type: Documentation
    url: https://developers.justt.ai/docs/prevention-tools-overview
- aid: justt:webhook-events
  name: Justt Webhook Events
  description: OpenAPI 3.1 specification of the eleven webhook events Justt sends to merchant endpoints
    — chargeback created/updated/status-updated, evidence submitted, chargeback accepted, pre-chargeback
    alert received/refund succeeded/refund failed/transaction matched, and CRM subscription cancellation
    success/failure. Payloads are signed HMAC-SHA256 and delivered with svix signature headers.
  humanURL: https://developers.justt.ai/docs/webhook-introduction
  baseURL: https://api.justt.ai/v1
  tags:
  - Webhooks
  - Events
  - Chargebacks
  properties:
  - type: OpenAPI
    url: asyncapi/justt-webhook-events-openapi-original.json
  - type: Webhooks
    url: asyncapi/justt-webhook-events.yml
  - type: Documentation
    url: https://developers.justt.ai/docs/webhook-events-event-types
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/justt-agentic-access.yml
- type: DomainSecurity
  url: security/justt-domain-security.yml
- type: Authentication
  url: authentication/justt-authentication.yml
- type: Website
  url: https://justt.ai/
- type: DeveloperPortal
  url: https://developers.justt.ai/
- type: Documentation
  url: https://developers.justt.ai/docs/getting-started
- type: APIReference
  url: https://developers.justt.ai/reference
- type: GettingStarted
  url: https://developers.justt.ai/docs/getting-started
- type: Support
  url: https://developers.justt.ai/docs/contact-us
- type: Blog
  url: https://justt.ai/blog/
- type: Login
  url: https://app.justt.ai/
- type: TermsOfService
  url: https://justt.ai/terms-of-use/
- type: PrivacyPolicy
  url: https://justt.ai/privacy-policy/
- type: StatusPage
  url: https://status.justt.ai/
- type: TrustCenter
  url: https://trust.justt.ai/
- type: Compliance
  url: https://trust.justt.ai/
- type: APICatalog
  url: well-known/justt-well-known.yml
- type: WellKnown
  url: well-known/justt-well-known.yml
- type: MCPServer
  url: mcp/justt-mcp.yml
- type: ToolCrosswalk
  url: mcp/justt-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/justt-llms.txt
- type: Overlay
  url: overlays/justt-rest-api-overlay.yaml
- type: Conformance
  url: conformance/justt-conformance.yml
- type: ErrorCatalog
  url: errors/justt-problem-types.yml
- type: Lifecycle
  url: lifecycle/justt-lifecycle.yml
- type: Deprecation
  url: https://developers.justt.ai/docs/legacy-api-to-rest-api-migration-guide
- type: OAuthScopes
  url: scopes/justt-scopes.yml
- type: Sandbox
  url: sandbox/justt-sandbox.yml
- type: Conventions
  url: conventions/justt-conventions.yml
- type: DataModel
  url: data-model/justt-data-model.yml
- type: Webhooks
  url: asyncapi/justt-webhook-events.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/justt-plans-pricing.yml
- type: RateLimits
  url: rate-limits/justt-rate-limits.yml
- type: Arazzo
  url: arazzo/_index.yml
x-enrichment:
  date: '2026-08-23'
  status: enriched
  artifacts_added: 38
  pass: local-v1