{"domain":"grok-backtest-api.fly.dev","count":2,"changes":[{"captured_at":"2026-10-26T21:21:30.696498","card_hash":"7e4781513791104c3e12081b73410bece9800da21307ba252075d9b044cbc20f","previous_card_hash":"2a6e80ecdb300db39c625f6f9e19bb7d107a54c8ccbee8e297077e3145d07551","diff":{"skills_added":[{"id":"backtest","name":"Crypto Backtest","description":"Backtest any crypto strategy on 399 Coinbase coins, bias-free. Breakout, momentum, dip-buy or MA trend rules on Coinbase daily data with fees, slippage, H1/H2 split, luck flag and survivorship-bias-free universe. POST /backtest - $0.05 USDC.","tags":["crypto","backtest","trading","coinbase"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"optimize","name":"Strategy Optimizer","description":"Find robust strategy params, not lucky ones: tests up to 50 combos of a backtest strategy; ranks by worst-half (H1/H2) return with neighbourhood smoothing, flags overfitting, and recommends the most robust parameters rather than the best-fit ones. POST /optimize - $0.50 USDC.","tags":["crypto","backtest","optimize","robustness"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"signals","name":"Crypto Market Signals","description":"Daily crypto market regime: BTC/ETH trend, breadth, breakout watchlist. BTC/ETH vs 20/50-day MAs, market breadth (% of point-in-time top-N above 20DMA), coins nearest a 20-day breakout, and the R1 breakout strategy's gate and entry signals. Completed UTC daily closes only. GET /signals - $0.01 USDC.","tags":["crypto","signals","market","breadth"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"token-check","name":"Token Risk Check","description":"Token scam check: honeypot, mint/pause/blacklist, fake-USDC lookalikes. Scam/honeypot/rug risk check for a Base, Ethereum or Solana token: unverified code, sell restrictions, mint/pause/blacklist powers, taxes, upgradeable proxy, age, liquidity, fake major-token impersonation and spam-airdrop patterns. Never visits metadata URLs. POST /token-check - $0.02 USDC.","tags":["crypto","security","token","scam"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"universe","name":"Point-in-time Universe","description":"Survivorship-free top-N coin list for any past date. Top-N Coinbase USD pairs by trailing 20-day dollar volume as of a past date, using only data available that day (survivorship-bias-free universe for backtests). GET /universe - $0.05 USDC.","tags":["crypto","universe","backtest","data"],"inputModes":["application/json"],"outputModes":["application/json"]}],"skills_removed":[],"skills_changed":[],"fields_changed":[{"field":"name","before":null,"after":"Grok Crypto Quant API"},{"field":"description","before":null,"after":"Pay-per-call crypto quant tools for agents, paid in USDC over x402: strategy backtests and parameter optimisation on Coinbase daily candles with a survivorship-bias-free point-in-time universe, daily market signals, point-in-time top-N universes, and token contract risk checks (Base, Ethereum, Solana)."},{"field":"version","before":null,"after":"0.2.0"},{"field":"protocolVersion","before":null,"after":"0.3.0"},{"field":"url","before":null,"after":"https://grok-backtest-api.fly.dev"},{"field":"documentationUrl","before":null,"after":"https://grok-backtest-api.fly.dev/llms.txt"},{"field":"iconUrl","before":null,"after":"https://grok-backtest-api.fly.dev/icon.png"},{"field":"preferredTransport","before":null,"after":"HTTP+JSON"},{"field":"securitySchemes","before":null,"after":{}},{"field":"security","before":null,"after":[]},{"field":"capabilities","before":null,"after":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false,"extensions":[{"uri":"https://x402.org","description":"Skills are paid per call via x402 v2 (USDC on eip155:8453); REST endpoints are listed in /openapi.json","required":true}]}},{"field":"provider","before":null,"after":{"organization":"Grok Crypto Quant API","url":"https://grok-backtest-api.fly.dev"}}],"other_changed":true,"is_empty":false,"human_summary":"added 5 skills · name ∅ → Grok Crypto Quant API · description ∅ → Pay-per-call crypto quant tools for agen · version ∅ → 0.2.0 · protocolVersion ∅ → 0.3.0 · url ∅ → https://grok-backtest-api.fly.dev · documentationUrl ∅ → https://grok-backtest-api.fly.dev/llms.t · iconUrl ∅ → https://grok-backtest-api.fly.dev/icon.p · preferredTransport ∅ → HTTP+JSON · securitySchemes ∅ →  · security ∅ → [] · capabilities ∅ → extensions, pushNotifications, stateTran · provider ∅ → Grok Crypto Quant API"}},{"captured_at":"2026-10-26T21:20:09.786095","card_hash":"2a6e80ecdb300db39c625f6f9e19bb7d107a54c8ccbee8e297077e3145d07551","previous_card_hash":null,"diff":{"skills_added":[],"skills_removed":[],"skills_changed":[],"fields_changed":[],"other_changed":true,"is_empty":false,"human_summary":"internal fields changed"}}]}