# xx402 BTC 15-Minute Execution Friction API

> xx402 BTC 15-Minute Execution Friction API is a paid API for AI agents from x402.xx402.icu, paid per call via x402, $0.01/call, status down (last checked 2026-10-23).

Returns execution friction analysis, ticket-size ladders, and buyer/seller playbook data for Bitcoin 15-minute Up/Down prediction markets.

## Facts

- Endpoint: GET https://x402.xx402.icu/api/btc15-execution-friction?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xx402-btc-15-minute-execution-friction-api-d8b39a3f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jmT_rPmejNv99lGp6NnHw

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 xx402-btc-15-minute-execution-friction-api-d8b39a3f
```

Example prompt: Check the current Bitcoin 15-minute Up/Down market execution friction using the last 90 snapshots and show me the ticket ladder up to $50 — I want to know if I should buy in and what the buyer playbook recommends.

## When to prefer this

Use this endpoint when an autonomous agent or risk tool needs a structured go/no-go friction decision plus ticket-size guidance specifically for Bitcoin 15-minute Up/Down prediction markets. Prefer it over generic market data endpoints when you need execution-layer guardrails, a buyer playbook, and a prioritized queue of actionable market conditions rather than raw price or OHLCV data.

## Known failure modes

- lookback_rows out of range (must be 15–180) returns a validation error
- max_ticket_usd out of range (must be 5–100) returns a validation error
- invalid or non-existent market_timestamp returns no market data
- payment not received or x402 authorization missing returns 402 Payment Required
- upstream data collector unavailable causes stale or missing source_status fields

## How this service works

Paid Base token, wallet, DeFi, chain-read, x402 buyer/seller discovery, and specialized Bitcoin 15-minute Up/Down prediction-market data packets for autonomous agents and risk tools.

## Output

A JSON object with fields including: a friction_decision (go/no-go signal), ticket_ladder (recommended bet sizes from $5 to the requested max), buyer_next_action, btc15_buyer_playbook, risk_breakdown, priority_queue and avoid_queue of market conditions, execution_guardrails, quality_flags, source_status, market metadata, freshness timestamp, and a repeat_purchase_guard signal to prevent redundant calls.

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "purchase_acceptance",
  "buyer_next_action",
  "next_paid_call",
  "decision_evidence",
  "repeat_purchase_guard",
  "btc15_buyer_playbook",
  "data_contract",
  "friction_decision",
  "priority_queue",
  "risk_breakdown",
  "review_queue",
  "avoid_queue",
  "bucket_counts",
  "next_products",
  "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/xx402-btc-15-minute-execution-friction-api-d8b39a3f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.xx402.icu](https://www.zero.xyz/host/x402.xx402.icu/llms.txt)