# Mycelia Signal ETH/USD Support & Resistance Density Oracle

> Mycelia Signal ETH/USD Support & Resistance Density Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Returns Ed25519-signed ETH/USD price dwell levels — support, resistance, and at-level zones with strength and proximity scores derived from 69 days of spot history

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/market/support/density/eth
- Price: $0.15/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-eth-usd-support-resistance-density-oracle-f8cddbb2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XW_Hzspx0YYL8nEX9D7Ss

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-density-oracle-f8cddbb2
```

Example prompt: What are the current ETH/USD support and resistance dwell levels with their strength scores — I want a cryptographically signed attestation based on the past 69 days of spot price history.

## When to prefer this

Choose this endpoint when you need a deterministic, cryptographically attested ETH/USD market structure snapshot — specifically dwell-based support and resistance levels — rather than real-time tick data, predictive signals, or non-signed price feeds. Ideal for agents that need verifiable, audit-trail-ready market structure data or that feed price levels into automated trading logic requiring trustless attestation.

## Known failure modes

- Payment not included or insufficient USDC (x402 payment required, $0.15 per call)
- Upstream price data unavailable resulting in a service error
- Signature verification failure if public key mismatched
- Rate limiting if called excessively without valid payment
- Stale data if spot feed temporarily interrupted

## How this service works

ETH/USD dwell levels (where price spent time / acceptance). 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 signed JSON payload containing ETH/USD price dwell density zones categorized as support, resistance, or at-level, each with a strength score and proximity to current price, plus an Ed25519 signature for cryptographic verification. Covers 69 days of spot price history with no forward-looking claims.

## 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-density-oracle-f8cddbb2/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)