# LUMI Forecast Integrity Audit

> LUMI Forecast Integrity Audit is a paid API for AI agents from app.tenna.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a tamper-evident audit receipt for sealed five-minute forecast history, including cutoff timing, feature hashes, settlement sources, and Brier quality scores for a specified forecast participant.

## Facts

- Endpoint: POST https://app.tenna.ai/api/x402/lumi/forecast_integrity_receipt
- Price: $0.05/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-integrity-audit-db4362eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DfZqMgS1ntbYEHl0pqPBn

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-integrity-audit-db4362eb -d '<json body>'
```

Example prompt: Pull a forecast integrity receipt for the lumi agent covering the last 25 rounds — I want to see the Brier scores, feature hashes, and settlement sources to verify nothing was tampered with.

## When to prefer this

Use this endpoint when you need cryptographic audit evidence of a forecast agent's historical integrity — verifying that inputs were sealed before settlement, checking Brier quality scores, or producing compliance documentation. Prefer this over simply reading agent outputs when you need tamper-evident proof rather than live predictions. Not appropriate when you want an actual forecast or trading signal.

## Known failure modes

- Invalid agentId enum value returns validation error
- limit out of range (below 1 or above 100) returns schema validation failure
- offering field not set to exactly 'forecast_integrity_receipt' causes request rejection
- Insufficient USDC balance or failed x402 payment results in 402 Payment Required
- No historical rounds available for the requested range returns empty or partial receipt
- Service downtime returns 5xx error with no receipt

## How this service works

Forecast Integrity Audit. Integrity receipt for sealed five-minute forecast history: cutoff timing, feature hashes, settlement sources, and agent prediction coverage, with Brier quality disclosed separately. A large sample does not turn a weak score into demonstrated edge. Audit evidence only, not a forecast or trading signal.

## Output

A structured integrity receipt containing: cutoff timing for each round, feature hashes attesting to sealed inputs, settlement sources used for scoring, agent prediction coverage statistics, and a separately disclosed Brier quality score. The receipt is audit evidence only — it does not constitute a forecast or trading signal.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 100,
   "minimum": 1,
   "description": "Recent rounds to include (1-100)."
  },
  "agentId": {
   "enum": [
    "consensus",
    "lumi",
    "tenna"
   ],
   "type": "string",
   "description": "Forecast participant to audit."
  },
  "offering": {
   "type": "string",
   "const": "forecast_integrity_receipt",
   "description": "Offering identifier. Must be exactly 'forecast_integrity_receipt'."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lumi-forecast-integrity-audit-db4362eb/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)