# Mycelia Signal BTC/USD Support & Resistance Density Oracle

> Mycelia Signal BTC/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 2026-09-13).

Returns Ed25519-signed BTC/USD price dwell levels (support, resistance, at-level) with strength and proximity scores derived from 69 days of spot price history.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/market/support/density/btc
- 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-btc-usd-support-resistance-density-oracle-743d48bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3Ho7QtZ61dSFWDvkKnQ8s

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-density-oracle-743d48bf
```

Example prompt: Pull the current BTC/USD dwell levels from Mycelia Signal — I need the support and resistance zones with their strength and proximity scores, plus the Ed25519 signed attestation, based on the last 69 days of spot history.

## When to prefer this

Choose this endpoint when you need a deterministic, cryptographically verifiable BTC price structure reading — not a prediction or sentiment score — grounded in objective dwell-time analysis over 69 days. Ideal for trading systems, DeFi protocols, or compliance workflows that require auditable, signed price-level attestations rather than probabilistic forecasts. Prefer over raw exchange data when you need pre-computed support/resistance classification with strength and proximity metadata.

## Known failure modes

- Payment not included or insufficient — HTTP 402 response requiring $0.15 USDC via x402 protocol
- Rate limiting or upstream data unavailability — temporary 5xx response
- Signature verification failure on client side if public key not matched against Mycelia Signal discovery endpoint
- Empty or sparse level set if BTC price has been highly volatile with few clear dwell zones

## How this service works

BTC/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 deterministic, Ed25519-signed JSON attestation containing BTC/USD price dwell levels categorized as support, resistance, or at-level, each annotated with a strength score (how much time price spent there) and proximity score (distance from current price), covering 69 days of spot history. No forward-looking or predictive claims are included.

## 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-density-oracle-743d48bf/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)