# Mycelia Signal Macro Economic Surprise Index

> Mycelia Signal Macro Economic Surprise Index is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns the last 20 macro economic data releases with actual vs estimate deviations (surprise index) for US, EU, GB, JP, and CN, with Ed25519 signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/econ/surprises
- Price: $0.1/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-macro-economic-surprise-index-a55b7e55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d0oGUgfIp3jVianYU0nOq

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-macro-economic-surprise-index-a55b7e55
```

Example prompt: Pull the latest macro economic surprise index — last 20 releases showing actual vs estimate deviations for US, EU, UK, Japan, and China — and give me the Ed25519 signed attestation so I can use it on-chain.

## When to prefer this

Use this endpoint when you need cryptographically attested macro economic surprise data across multiple major economies (US, EU, GB, JP, CN) for use in on-chain protocols, DeFi smart contracts, or algorithmic trading systems that require verifiable economic release deviations. Prefer this over unattested data feeds when trustless verification of economic inputs is required.

## Known failure modes

- Payment not provided or insufficient (402 Payment Required)
- Upstream data feed unavailable for one or more regions causing partial or failed response
- Ed25519 signing service temporarily down causing attestation failure
- Rate limiting if too many calls in a short period
- Network timeout if data aggregation across 5 regions is slow

## How this service works

Macro surprise index — last 20 releases with actual vs estimate deviation for US, EU, GB, JP, CN — Ed25519 signed attestation

## Output

A signed payload containing the last 20 macro economic data releases across US, EU, GB, JP, and CN, each with the actual reported value, the prior estimate, and the computed deviation/surprise score. The response includes an Ed25519 cryptographic attestation for trustless, on-chain verification.

## 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-macro-economic-surprise-index-a55b7e55/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)