# Mycelia Signal MSTI Contagion Index History

> Mycelia Signal MSTI Contagion Index History is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns 56 days of historical MSTI (Market Stress/Contagion Index) data with per-row component breakdowns including correlation, equity vol, DXY, credit, and beta signals, with Ed25519 signed attestation.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/history/index/msti
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mycelia-signal-msti-contagion-index-history-95dabc1b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UOqAhY27p5ri1woxuBedS

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-msti-contagion-index-history-95dabc1b
```

Example prompt: Pull the last 56 days of MSTI contagion index history including the correlation, equity vol, DXY, credit, and beta component breakdowns — I need the cryptographically signed per-row data so I can verify authenticity and run a stress analysis.

## When to prefer this

Use this endpoint when you need a cryptographically attested, multi-component historical view of market contagion risk spanning 56 days, particularly when auditability of the data source matters (e.g., for compliance, risk model backtesting, or on-chain oracle verification). Prefer this over generic volatility feeds when you specifically need the decomposed MSTI index with correlation, DXY, credit, and beta sub-signals in a single signed payload.

## Known failure modes

- Payment not provided or invalid — 402 Payment Required response
- Endpoint unavailable or server error — 5xx response
- Malformed or missing query parameters — 400 response
- Ed25519 signature verification failure on consumer side if keys mismatched
- Rate limiting if too many calls made in short succession

## How this service works

MSTI contagion index history — 56 days, per-row original signatures. Correlation, equity vol, DXY, credit, beta components. — Ed25519 signed attestation

## Output

A 56-row time series of the MSTI contagion index with per-row breakdown into correlation, equity volatility, DXY, credit, and beta sub-components. Each row includes an Ed25519 digital signature for tamper-evident attestation of the data. Priced at $0.1 USDC per call via x402 micropayment protocol.

## 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-msti-contagion-index-history-95dabc1b/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)