{"uid":"cap_oPXi2ulwSpwkjGpCVig6C","slug":"tinkrr-bitcoin-fee-forecast-api-79250d09","name":"Tinkrr Bitcoin Fee Forecast API","description":"Real-time Bitcoin fee forecast: next-block, 30-min, 1-hr with congestion tier","url":"https://tinkrr-api.tinkrr.workers.dev/btc/fees","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","properties":{"queryParams":{"type":"object","properties":{}}}},"output":{"type":"object","properties":{"schema":{"type":"object","properties":{"timing":{"type":"object"},"estimates":{"type":"object"},"congestion":{"enum":["low","medium","high","critical"],"type":"string"},"exampleCosts":{"type":"object"}}},"example":{"estimates":{"oneHour":{"low":3,"mid":4,"high":5},"nextBlock":{"low":5,"mid":6,"high":7},"thirtyMin":{"low":4,"mid":5,"high":6}},"congestion":"low","exampleCosts":{"oneHour_sats":564,"p2wpkh_vbytes":141,"nextBlock_sats":846}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1uBN5JtTW3t-1pa6lUxT7","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time Bitcoin transaction fee estimates for next-block, 30-minute, and 1-hour confirmation windows along with a mempool congestion tier","exampleAgentPrompt":"What are the current Bitcoin transaction fees — give me the next-block, 30-minute, and 1-hour estimates along with whether congestion is low, medium, high, or critical right now?","exampleUseCases":null,"resultDescription":"Returns a JSON object containing fee rate estimates (in sat/vB or similar unit) for next-block, 30-minute, and 1-hour confirmation targets, a congestion tier enum ('low', 'medium', 'high', or 'critical'), example cost breakdowns, and timing metadata reflecting current mempool conditions.","failureModes":["Payment not included or invalid x402 payment header — returns 402 Payment Required","Upstream mempool data unavailable — returns 503 or stale data","Rate limit exceeded — returns 429 Too Many Requests","Malformed request — returns 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need a quick, structured Bitcoin fee forecast with explicit congestion classification and multi-window estimates (next-block, 30-min, 1-hr) in a single call. Prefer it over raw mempool explorers when you need a clean API with congestion tier labels suitable for automated decision-making in wallets, payment processors, or DeFi tooling.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:34:38.770Z","isFirstParty":false}