# Mycelia Signal CPI Month-over-Month Probability Distribution

> Mycelia Signal CPI Month-over-Month Probability Distribution is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns Kalshi-derived CPI month-over-month change probability distribution including expected value, entropy, and per-period implied distribution, with Ed25519 signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/prediction/cpi
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mycelia-signal-cpi-month-over-month-probability-distribution-686e2e56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g0eWxZYVZJLP-ioDLcwfT

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 mycelia-signal-cpi-month-over-month-probability-distribution-686e2e56
```

Example prompt: What's the current Kalshi-derived probability distribution for next month's CPI reading — I want the expected value, entropy, and the per-period implied distribution, all with a signed attestation I can verify?

## When to prefer this

Choose this endpoint when you need a cryptographically attested, prediction-market-implied probability distribution for US CPI month-over-month change — particularly when you need the full distribution shape (entropy, per-period weights) rather than just a point estimate. Prefer this over news-based or model-based inflation forecasts when you want market-consensus pricing of inflation outcomes with verifiable data provenance via Ed25519 signature.

## Known failure modes

- Kalshi API unavailability causing stale or missing distribution data
- Payment not processed — 402 response requiring x402 USDC payment of $0.25
- Invalid or expired Ed25519 signature if attestation infrastructure fails
- Empty or low-liquidity prediction market resulting in low-quality distribution
- Rate limiting if the endpoint is called too frequently

## How this service works

CPI month-over-month change probability distribution from Kalshi — expected value, entropy, per-period implied distribution — Ed25519 signed attestation

## Output

A signed JSON payload containing the Kalshi-derived CPI month-over-month probability distribution, including: the expected value of the next CPI print, entropy of the distribution (measuring market uncertainty), per-period implied probability weights across CPI outcome buckets, and an Ed25519 cryptographic attestation verifying the data integrity and origin.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mycelia-signal-cpi-month-over-month-probability-distribution-686e2e56/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)