Build with DecisionLedger

A complete REST API for programmatic access to 150+ decision models, scenario management, KPI tracking, and governance workflows. Ship smarter integrations in hours, not weeks.

# Create a scenario via the API

curl -X POST \

https://api.decisionledgerai.com/api/v1/scenarios \

-H "Authorization: Bearer sk_live_..." \

-H "Content-Type: application/json" \

-d '{"model_id":"attrition_risk_model",'

'"inputs":{"department":"Eng","tenure":24}}'

# Response

{ "metrics": { "risk_score": 0.34, "band": "Medium" } }

Quick Start

Three steps from zero to your first API response.

Get Your API Key

Generate a key from Admin → API Keys. Each key is scoped to your tenant with configurable permissions.

Make Your First Call

POST to /api/v1/scenarios with a model_id and your inputs. The API validates, runs the model, and returns results in seconds.

Parse the Response

The JSON response includes metrics, decision_structure, notes, and a full audit trail you can feed into downstream systems.

API Categories

Six resource families covering every aspect of the platform.

Scenarios

Create, run, and compare scenarios. Full CRUD plus batch operations for running multiple models in a single request.

Models

Browse 150+ decision models, retrieve input/output schemas, and validate inputs before execution.

KPIs

Define, track, and alert on key performance indicators. Link KPIs to model outputs for automated monitoring.

Decisions

Log decisions, attach evidence and scenarios, track outcomes over time, and generate audit exports.

Integrations

Configure HRIS and data warehouse connectors, trigger sync jobs, and manage field mappings programmatically.

Webhooks

Subscribe to platform events, configure delivery endpoints, set retry policies, and inspect delivery logs.

Authentication

Two options depending on your integration pattern.

API Key

Best for server-to-server integrations, cron jobs, and backend services. Generate keys in the Admin panel with configurable scopes and expiration dates.

// Header Authorization: Bearer <your-api-key>

Keys are scoped per-tenant with configurable read/write permissions per resource.

OAuth 2.0

Best for user-context flows where actions should be attributed to individual users. Supports authorization code and client credentials grants via Cognito.

// Token exchange POST /oauth2/token grant_type=authorization_code code=<auth-code> redirect_uri=https://your-app.com/callback

Access tokens are short-lived (1 hour). Use refresh tokens for long-running integrations.

Code Examples

Create a scenario in the language of your choice.

Python

import requests

resp = requests.post(
    "https://api.decisionledgerai.com/api/v1/scenarios",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "model_id": "attrition_risk_model",
        "inputs": {"department": "Engineering", "tenure_months": 24}
    }
)
print(resp.json()["metrics"])

JavaScript

const resp = await fetch(
  "https://api.decisionledgerai.com/api/v1/scenarios",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      model_id: "attrition_risk_model",
      inputs: { department: "Engineering", tenure_months: 24 }
    })
  }
);
const data = await resp.json();

cURL

curl -X POST https://api.decisionledgerai.com/api/v1/scenarios \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model_id":"attrition_risk_model","inputs":{"department":"Engineering","tenure_months":24}}'

Rate Limits

Generous defaults that scale with your plan.

Starter

50 req/min

1,000 req/day

Ideal for prototyping and small teams

Professional

200 req/min

10,000 req/day

Production workloads and integrations

Enterprise

Custom limits

Dedicated endpoints

Volume-based, SLA-backed

Ready to integrate?

Get your API key and start building in minutes. Full documentation, SDKs, and example projects included.