---
title: "Log a decision"
method: POST
path: "/v1/decisions"
tags: ["Decision Memory"]
---

# Log a decision

`POST /v1/decisions`

## Request

- Base URL: `https://api.algenta.ai`
- URL: `https://api.algenta.ai/v1/decisions`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

Record a decision that was made. Link it to a simulation run_id to bind the full DecisionPlan context. Call PATCH /outcome later to close the loop.

## Request body

- LogDecisionRequest: Body for POST /v1/decisions — log a decision that was made.
  - `run_id` string, uuid, nullable: ID of the simulation run that produced this decision (links DecisionPlan -> DecisionLog).
  - `context` string, nullable: Free-text description of the business situation when this decision was made.
  - `chosen_action` string, required: The action that was chosen.
  - `options_considered` string[], nullable: All option names that were evaluated before choosing.
  - `expected_value` number, nullable
  - `confidence` number, nullable
  - `rationale` string, nullable
  - `risk_p5` number, nullable
  - `risk_p95` number, nullable
  - `risk_pol` number, nullable: Probability of loss at decision time
  - `request_hash` string, nullable
  - `result_hash` string, nullable

## Response `201`

Successful Response

- DecisionLogResponse: Single decision log entry.
  - `id` string, uuid, required
  - `org_id` string, uuid, required
  - `run_id` string, uuid, nullable, required
  - `context` string, nullable, required
  - `chosen_action` string, required
  - `options_considered` string[], nullable, required
  - `expected_value` number, nullable, required
  - `confidence` number, nullable, required
  - `rationale` string, nullable, required
  - `risk_p5` number, nullable, required
  - `risk_p95` number, nullable, required
  - `risk_pol` number, nullable, required
  - `request_hash` string, nullable, required
  - `result_hash` string, nullable, required
  - `policy_snapshot_id` string, nullable, required
  - `schema_snapshot_id` string, nullable, required
  - `manifest_version` string, nullable, required
  - `actual_outcome` number, nullable, required
  - `outcome_delta` number, nullable, required
  - `outcome_notes` string, nullable, required
  - `outcome_recorded_at` string, date-time, nullable, required
  - `executed_at` string, date-time, nullable, required
  - `execution_status` string, nullable, required
  - `execution_webhook_url` string, nullable, required
  - `execution_response_code` integer, nullable, required
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/codna/apis/algenta-api.md) · [All operations](https://skmtc.dev/codna/apis/algenta-api/llms.txt) · [OpenAPI document](https://skmtc.dev/codna/apis/algenta-api/revisions/35d30f84a5df?raw)