> ## Documentation Index
> Fetch the complete documentation index at: https://docs.clausum.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Replay assessment (read-only)

> Re-runs the risk engine against the stored assess request snapshot and returns a diff vs the persisted decision. Does not write to the database. Requires secret key with `transactions:read` or `stats:read`.



## OpenAPI

````yaml /api-reference/openapi.json post /api/v1/merchant/assess-sessions/{sessionId}/replay
openapi: 3.1.0
info:
  title: Clausum API
  version: 1.4.0
  description: >-
    REST API for real-time fraud risk assessment (pay-in and payout), fraud
    reporting, blocklist management, and event ingestion. API version 1.3.0.
    Create Partner API keys (`clm_pub_*`, `clm_sk_*`) in the dashboard under
    Conexiones → Claves API. Webhook ingest uses separate `clm_wh_*` keys
    (Conexiones → Entrada webhooks).
  contact:
    name: Clausum API Support
    email: api@clausum.ai
    url: https://clausum.ai
servers:
  - url: https://sandbox.clausum.ai
    description: Sandbox — integrators and trials
  - url: https://dashboard.clausum.ai
    description: Production dashboard and Partner API
security:
  - apiKeyAuth: []
tags:
  - name: Risk
    description: Real-time risk scoring for pay-in checkout and sessions.
  - name: Payout
    description: Outbound disbursement and treasury transfer assessment.
  - name: Fraud
    description: Report confirmed fraud and trigger the downstream chain.
  - name: Network
    description: >-
      Collaborative fraud intelligence — publish and query shared signals
      between opt-in participants.
  - name: Blocklists
    description: Manage dynamic blocklists used during assessment.
  - name: Cases
    description: Manage fraud cases (expedientes) and submit them to regulators.
  - name: Events
    description: Ingest raw events from your payment providers.
  - name: System
    description: Health and status checks.
  - name: PSP Submerchants
    description: >-
      PSP submerchant registry and scoped API keys (requires
      submerchants:read/write).
  - name: Merchant
    description: Partner merchant API — stats, cases, prevention KPIs, explainability.
paths:
  /api/v1/merchant/assess-sessions/{sessionId}/replay:
    post:
      tags:
        - Merchant
      summary: Replay assessment (read-only)
      description: >-
        Re-runs the risk engine against the stored assess request snapshot and
        returns a diff vs the persisted decision. Does not write to the
        database. Requires secret key with `transactions:read` or `stats:read`.
      operationId: merchantAssessReplay
      parameters:
        - name: sessionId
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Replay diff and signal breakdown
        '404':
          description: Session not found
      security:
        - apiKeyAuth: []
components:
  securitySchemes:
    apiKeyAuth:
      type: http
      scheme: bearer
      description: >-
        Partner secret or publishable key, e.g. `clm_sk_...` or `clm_pub_...`
        (assess only).
      x-default: clm_sk_your_secret_key

````

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