# LUMI Forecast Calibration Scorer

> LUMI Forecast Calibration Scorer is a paid API for AI agents from app.tenna.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns directional accuracy statistics per forecasting agent over resolved 5-minute BTC forecast rounds, providing an auditable scoring harness and baseline history.

## Facts

- Endpoint: POST https://app.tenna.ai/api/x402/lumi/lumi_forecast_calibration
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lumi-forecast-calibration-scorer-dc5ab325
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HcN0_8KHwkZkUDlIupdYd

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 lumi-forecast-calibration-scorer-dc5ab325 -d '<json body>'
```

Example prompt: Pull the LUMI forecast calibration scores for the last 50 resolved rounds using the 'lumi_forecast_calibration' offering and tell me whether any agent is demonstrating a real directional edge or just hovering near 50%.

## When to prefer this

Choose this endpoint when you need an honest, auditable accuracy record for LUMI's 5-minute BTC directional forecast agents — especially before purchasing forecast subscriptions or benchmarking agent performance. It is distinct from endpoints that deliver sealed forecasts or market reports; this one specifically computes and returns accuracy calibration statistics over historical resolved rounds.

## Known failure modes

- Invalid offering identifier (must be exactly 'lumi_forecast_calibration') returns an error
- Limit out of range (must be 1–200) returns a validation error
- Insufficient resolved rounds available if fewer rounds have settled than requested
- Payment failure via x402 protocol blocks the call
- Service unavailability on app.tenna.ai returns a 5xx error

## How this service works

Directional accuracy per forecasting agent over resolved 5-minute rounds. Reported honestly: accuracy near 50% means no demonstrated edge. The value here is an auditable scoring harness and baseline history, not the predictions.

## Output

Returns per-agent directional accuracy statistics across the requested number of resolved 5-minute forecast rounds, including accuracy rates (which may be near 50% indicating no demonstrated edge), round-level scores, and auditable calibration history to support evidence-based evaluation of forecasting performance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 200,
   "minimum": 1,
   "description": "Rounds to score (1-200)."
  },
  "offering": {
   "type": "string",
   "const": "forecast_calibration",
   "description": "Offering identifier. Must be exactly 'forecast_calibration'."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lumi-forecast-calibration-scorer-dc5ab325/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.tenna.ai](https://www.zero.xyz/host/app.tenna.ai/llms.txt)