---
title: "Monte Carlo FIRE Trajectory Simulator"
method: POST
path: "/v1/tools/monte_carlo_fire_simulator"
---

# Monte Carlo FIRE Trajectory Simulator

`POST /v1/tools/monte_carlo_fire_simulator`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/monte_carlo_fire_simulator`
- Auth: none declared

Run 1,000+ market scenarios in your browser to find the true probability your retirement portfolio survives. Parametric Monte Carlo with Box-Muller sampling. Outputs a probability cone, success rate, and Sequence of Returns Risk overlay. Zero PII. Zero API. No sign-up.

**Tool URL:** https://ainumbers.co/tools/107-monte-carlo-fire-simulator.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `portfolio` string
  - `contribution` string
  - `retire-spend` string
  - `curr-age` string
  - `retire-age` string
  - `horizon` string
  - `inflation` string
  - `ss-income` string
  - `sl-stocks` string
  - `sl-bonds` string
  - `sl-cash` string
  - `sorr-toggle` string

## Response `200`

Successful tool execution result

- object

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)