# Mycelia Signal BTC/USD Support & Resistance Oracle

> Mycelia Signal BTC/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 2026-09-14).

Returns deterministic, Ed25519-signed BTC/USD price-structure attestation combining pivot, density, and round-number methods to identify support, resistance, and at-level zones with strength and proximity scores over 69 days of spot history.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/market/support/all/btc
- 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-btc-usd-support-resistance-oracle-0d8315dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9TnpC6-lTjQwcOBHuHaCk

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-btc-usd-support-resistance-oracle-0d8315dd
```

Example prompt: Give me a signed attestation of all current BTC/USD support and resistance levels — combining pivot points, price density, and round numbers — with strength and proximity scores so I know which levels matter most right now.

## When to prefer this

Choose this endpoint when you need a multi-method corroborated, cryptographically verifiable BTC price-structure snapshot rather than a single-method indicator. It is ideal for agents that need trustless, auditable support/resistance data (e.g. on-chain settlement logic, verifiable trading signals, or audit trails). Prefer it over exchange order-book-based level detection when you want historical density and round-number confluence, not just real-time liquidity walls.

## Known failure modes

- Upstream spot price data temporarily unavailable — endpoint may return 503 or stale-data error
- Payment of $0.15 USDC not received — 402 Payment Required returned before data is served
- No significant levels detected in current price window — sparse or empty level arrays returned
- Ed25519 signing key rotation may cause temporary signature verification failures if client has cached old pubkey

## How this service works

BTC/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 deterministic, Ed25519-signed JSON attestation containing all identified BTC/USD support levels, resistance levels, and at-level indicators derived from three corroborated methods (pivot analysis, price density clustering, round-number detection) over 69 days of spot history. Each level includes a strength score and proximity metric. The signature allows downstream verification of 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-btc-usd-support-resistance-oracle-0d8315dd/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)