# BTC15 Execution Friction Feed

> BTC15 Execution Friction Feed is a paid API for AI agents from xx402.icu, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Returns execution friction metrics and decision data for Bitcoin 15-minute Up/Down prediction markets, including ticket-size ladders, guardrails, and quality flags.

## Facts

- Endpoint: GET https://xx402.icu/x402/api/btc15-execution-friction
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/btc15-execution-friction-feed-8ee70647
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Blq2EPahbfO_9T_VXxI_0

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 btc15-execution-friction-feed-8ee70647
```

Example prompt: Check execution friction for the current Bitcoin 15-minute Up/Down market using the last 90 snapshots and give me the ticket ladder up to $50 — I want to see the friction decision, guardrails, and any quality flags.

## When to prefer this

Use this endpoint when you need real-time or historical execution friction intelligence specifically for Bitcoin 15-minute Up/Down prediction markets, including ticket-size-specific guardrails and quality flags. Prefer this over generic market data feeds when you need structured friction decisions and calibrated execution guidance for BTC15 microstructure.

## Known failure modes

- Invalid or non-existent market_timestamp returns an error or empty market data
- lookback_rows or max_ticket_usd outside allowed ranges (15–180 and 5–100) returns a validation error
- Stale or unavailable source data may degrade freshness and trigger quality flags
- Payment not included or insufficient USDC results in 402 Payment Required
- Server-side data collection lag may result in outdated friction snapshots

## How this service works

Paid x402 buyer market scout, x402 paid resource preflight, x402 seller visibility audit, Base actionable risk feed, liquidity exit risk alerts, pool launch risk feed, stable asset risk feed, contract control event feed, protocol outflow risk feed, yield pool allocation risk feed, protocol fee quality feed, token watchlist decision packet, wallet watchlist decision packet, approval risk feed, ranked DeFi review queues with incident history, onchain risk decision packet, promoted token campaign decision packet, large transfer decision packet, token candidate screening decision radar, DEX pair anomaly decision radar, wallet safety decision packet, counterparty flow, allowance, approval exposure, DEX pair routing risk, token trade safety, token liquidity, token flow, holder concentration, contract controls, batch token screening decision packets, token diligence, and BTC15 prediction-market microstructure, execution-friction, calibration-slice, recent market tape, resolved feature sample, and threshold-pressure packets for agents and risk tools.

## Output

Returns a JSON object with keys: summary (human-readable friction overview), friction_decision (go/no-go signal), market (current or requested market details), freshness (data age indicators), ticket_ladder (friction metrics per ticket size from $5 to $100), execution_guardrails (limits and warnings for trade execution), quality_flags (data quality and anomaly indicators), source_status (health of underlying data sources), and sources (list of data sources used).

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "friction_decision",
  "market",
  "freshness",
  "ticket_ladder",
  "execution_guardrails",
  "quality_flags",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/btc15-execution-friction-feed-8ee70647/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xx402.icu](https://www.zero.xyz/host/xx402.icu/llms.txt)