# Mycelia Signal MSSI Market Stress Index Oracle

> Mycelia Signal MSSI Market Stress Index Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns a cryptographically signed (Ed25519) attestation of the current MSSI market stress index value

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/stress/market
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-myceliasignal-com-031b4d79
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EHaeXNBmp8df9m5yKXCET

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 api-myceliasignal-com-031b4d79
```

Example prompt: Can you pull the latest Mycelia Signal market stress index reading and give me the signed attestation so I can verify it on-chain?

## When to prefer this

Use this endpoint when you need a cryptographically verifiable, signed attestation of the current market stress index — particularly for smart contracts, DeFi protocols, or any application requiring tamper-proof oracle data with Ed25519 signature verification. Prefer this over unsigned data feeds when auditability and provenance matter.

## Known failure modes

- Payment not received or x402 payment flow incomplete — returns 402 Payment Required
- Invalid or expired payment — returns 402 or 403
- Network or server error — returns 500
- Rate limit exceeded — returns 429
- Malformed request parameters — returns 400

## How this service works

MSSI market stress index — composite systemic risk signal across crypto, equity, credit and volatility markets — Ed25519 signed attestation

## Output

A signed JSON payload containing the current MSSI market stress index value along with an Ed25519 cryptographic signature and attestation metadata, allowing downstream systems or smart contracts to verify the data's authenticity and integrity.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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/api-myceliasignal-com-031b4d79/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)