# Mycelia Signal ETH/USD Support & Resistance Oracle

> Mycelia Signal ETH/USD Support & Resistance Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-13).

Returns Ed25519-signed ETH/USD price structure attestation (support, resistance, at-level) with strength and proximity scores derived from 69-day spot history using pivot, density, and round-number methods with cross-method corroboration.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/market/support/all/eth
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mycelia-signal-eth-usd-support-resistance-oracle-abb1df07
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P7r_Q8ES8M9HHVJnZTp9-

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-eth-usd-support-resistance-oracle-abb1df07
```

Example prompt: What are the current ETH/USD support and resistance levels, including strength and proximity scores, with a cryptographically signed attestation I can verify?

## When to prefer this

Choose this endpoint when you need cryptographically verifiable, deterministic ETH/USD price structure levels (not predictions) backed by a multi-method corroboration approach combining pivot points, price density, and round numbers over a 69-day lookback. Prefer it over uncertified price feeds when auditability, tamper-evidence, or compliance logging of market structure data is required.

## Known failure modes

- Upstream price data unavailability may prevent computation
- Stale 69-day history window if data pipeline is delayed
- Invalid or unverifiable Ed25519 signature if key rotation occurred
- Payment failure via x402 protocol returns 402 response before data is served
- Network timeout on the attestation endpoint

## How this service works

ETH/USD union of pivot+density+round with cross-method corroboration. Deterministic price-structure attestation over 69d spot history — support, resistance, at-level with strength and proximity. Ed25519 signed. No forward-looking claim. — Ed25519 signed attestation

## Output

A deterministically computed, Ed25519-signed attestation containing ETH/USD support levels, resistance levels, at-level flags, strength scores, and proximity metrics derived from 69 days of spot price history using union of pivot, density, and round-number methods with cross-method corroboration. The cryptographic signature allows independent verification of the data integrity.

## 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-eth-usd-support-resistance-oracle-abb1df07/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)