# SignalDesk AI CAGR Calculator

> SignalDesk AI CAGR Calculator is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Computes the Compound Annual Growth Rate (CAGR) given an initial value, final value, and number of years

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/finance/cagr?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-cagr-calculator-7805c1fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VDt20HPlxyE6Vfj0r_jDw

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signaldesk-ai-cagr-calculator-7805c1fd -d '<json body>'
```

Example prompt: What was the CAGR on an investment that started at $10,000 and grew to $18,500 over 6 years?

## When to prefer this

Use this endpoint when you need a quick, reliable, server-side CAGR computation without implementing the formula yourself, especially in agentic pipelines where you want a consistent numeric result with a clear disclaimer. Prefer it over a generic calculator when you need the result programmatically in JSON format for downstream processing or reporting.

## Known failure modes

- Missing required field (initial, final, or years) returns a validation error
- initial value of 0 or negative triggers exclusiveMinimum validation failure
- years value of 0 or negative triggers exclusiveMinimum validation failure
- Values exceeding 1,000,000,000,000 fail maximum constraint
- Payment not provided or insufficient USDC results in 402 Payment Required
- Negative final value with a positive initial may produce NaN or mathematical error depending on implementation

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object with a cagr_percent field (floating-point percentage, e.g. 10.0) and a notice clarifying this is a pure mathematical calculation with no tax, investment, or lending advice implied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "final": {
   "type": "number",
   "maximum": 1000000000000,
   "minimum": 0,
   "description": "Amount in one consistent currency; floating-point calculation, not an accounting ledger."
  },
  "years": {
   "type": "number",
   "maximum": 1000,
   "minimum": -1000000000000000,
   "description": "Positive years.",
   "exclusiveMinimum": 0
  },
  "initial": {
   "type": "number",
   "maximum": 1000000000000,
   "minimum": -1000000000000000,
   "description": "Positive start.",
   "exclusiveMinimum": 0
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "notice": "Calculation from supplied inputs only; no tax, investment or lending advice.",
  "cagr_percent": 10.00000000000001
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-cagr-calculator-7805c1fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)