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Carbon & Cashmere News Reaction Time API – BTC
x402
Carbon & Cashmere News Reaction Time API – BTC is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status down (last checked 2026-09-14).
Returns statistical analytics on how quickly BTC price moves in response to news events, including reaction rates, time-to-move distributions, and recent news-price sample data.
Price / call$0.05
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing the coin symbol, aggregated reaction statistics (total news events, reaction rate, min/max/median/p25/p75 seconds to move, count reacted within window), the active filter parameters, and an array of recent news samples each with timestamp, headline, source, sentiment, impact level, price at news, first move percentage, and seconds to move.
Example use cases
Backtesting news-driven trading signals
“I'm building a news-based trading strategy for Bitcoin — can you pull the reaction rate and time-to-move distribution for BTC over the last 30 days, using a 1% move threshold and a 4-hour window? I want to see the median and p75 seconds to move so I can calibrate my entry timing after a news event fires.”
Comparing high vs low impact news
“Can you grab the BTC news reaction stats filtered to only high-impact news events over the past 14 days? I want to understand if high-impact headlines move Bitcoin faster than average — give me the median seconds to move and the reaction rate so I can compare it against what we'd see with all news types included.”
Understanding crypto market news latency
“How quickly does the Bitcoin market typically respond to news? Pull me the full time-to-move distribution for BTC — min, max, median, p25 and p75 — over the last week with a 0.5% threshold, and include a few recent news samples so I can see some real examples of how fast the price actually moved after each headline.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/news-reaction-time/BTCWhen to prefer
Choose this endpoint when you need quantitative statistics on how quickly and how often Bitcoin price reacts to news events — particularly for building news-driven trading signals, backtesting news-reaction strategies, or understanding the typical latency between news publication and price movement. Prefer this over generic price endpoints when the research question is specifically about news-to-price causality and timing distributions.
Side effects
- Unsupported coin symbol returns 404 or empty result
- Invalid filter parameter values (e.g. negative lookback_days) return 400 bad request
- Insufficient historical data for the specified lookback window returns sparse or empty stats
- Payment failure via x402 protocol blocks access and returns 402 Payment Required
- Rate limiting or quota exhaustion returns 429 Too Many Requests
Output
Schema · Response
{
"type": "json",
"example": {
"coin": "BTC",
"stats": {
"news_total": 412,
"reaction_rate": 0.696,
"seconds_to_move": {
"max": 21540,
"min": 60,
"p25": 720,
"p75": 5400,
"median": 1842
},
"reacted_within_window": 287
},
"filter": {
"sentiment": null,
"min_impact": null,
"lookback_days": 14,
"time_window_hours": 6,
"move_threshold_pct": 0.005
},
"recent_samples": [
{
"ts": "2026-05-09T14:32:00Z",
"title": "Bitcoin ETF inflows hit record",
"source": "CoinDesk",
"sentiment": "positive",
"impact_level": "HIGH",
"price_at_news": 79500,
"first_move_pct": 0.00712,
"seconds_to_move": 480
}
]
}
}Tags
x402
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