Find a Free Crypto Market Data API
That Fits Your Build选择适合开发的
免费加密货币行情 API
Compare free crypto market data API coverage, keys, rate limits, and history, then validate a REST endpoint before you integrate it.
比较免费加密货币行情 API 的数据覆盖、密钥要求、限流和历史数据，
并在接入前验证一个 REST 端点。
TL;DR核心结论
A usable free crypto API returns current prices plus market cap, volume, asset identifiers, and timestamps.
Free can mean a keyless public endpoint, a registered free tier, or trial credits. Each has different limits and licenses.
Check asset coverage, freshness, history, rate limits, attribution, caching rights, and commercial-use terms.
Test one real request, inspect headers and errors, and confirm the response fields before writing integration code.
可用的免费加密货币 API 应返回当前价格、市值、成交量、资产标识和时间戳。
免费可能指无需密钥的公共端点、注册后的免费套餐或试用额度，限制与许可并不相同。
检查币种覆盖、更新频率、历史数据、限流、署名要求、缓存权利和商业使用条款。
先发出一次真实请求，查看响应头和错误格式，再确认字段是否适合你的应用。
What a free crypto market data API should provide免费加密货币行情 API 应该提供什么
The primary task behind this search is practical: developers want a cryptocurrency market data API they can test at no cost, then judge whether it can power a dashboard, portfolio view, alert, research workflow, or AI application. Market data is not the same as trade execution or wallet data.
中文用户通常希望找到可低成本验证的数字货币行情 API，用于看板、投资组合展示、价格提醒、研究流程或 AI 应用。行情数据不等于下单交易接口，也不等于钱包余额和链上账户数据。
Require stable asset IDs, quote currency, price, timestamp, and an explicit freshness model. Symbols alone can be ambiguous.
A crypto API for price and market cap should document circulating supply, volume window, exchange coverage, and aggregation method.
Confirm the earliest date, candle intervals, timezone, missing-data behavior, and whether OHLCV history is part of the free plan.
Useful responses expose status, pagination, rate-limit headers, error codes, and clear versioning—not just a price number.
优先选择提供稳定资产 ID、计价货币、价格、时间戳和明确更新频率的接口；只用币种符号可能产生歧义。
加密货币市值和成交量 API 应说明流通供应量、成交量窗口、交易所覆盖和聚合方式。
确认最早可查询日期、K 线周期、时区、缺失数据处理，以及 OHLCV 是否包含在免费套餐内。
有用的响应还应提供分页、限流响应头、错误码和版本策略，而不仅是一串价格。
Crypto identity needs more than a ticker. The same symbol can be reused by unrelated projects, while one economic asset can appear as a native coin, an ERC-20 or SPL token, a wrapped token, and a bridged representation on another network. Keep the provider asset ID, network, contract address, and trading instrument separate. A request for BTC/USD should not silently return WBTC/USDC, a perpetual contract, or a provider-wide composite.
加密资产不能只靠 ticker 识别。同一个符号可能被不同项目重复使用；同一种经济资产也可能同时存在原生币、ERC-20 或 SPL 代币、封装代币，以及跨链映射资产。系统应分别保存供应商资产 ID、网络、合约地址和交易品种。请求 BTC/USD 时，不能悄悄返回 WBTC/USDC、永续合约价格或供应商聚合参考价。
| Identity layer身份层级 | Example question需要回答的问题 | Safe implementation稳妥做法 |
|---|---|---|
| Economic asset经济资产 | Is this Bitcoin, Ether, or another project?它代表比特币、以太坊，还是其他项目？ | Use a stable internal ID and retain the provider ID.使用稳定的内部 ID，并保留供应商 ID。 |
| Network token链上代币 | On which chain, and at which contract address?位于哪条链，合约地址是什么？ | Key by network plus normalized contract address; version migrations.以网络与规范化合约地址联合识别，并记录迁移版本。 |
| Trading pair交易对 | What base and quote assets are actually traded?实际交易的基础资产和计价资产是什么？ | Store both IDs and venue; do not parse identity from a display symbol.保存双方资产 ID 与交易场所，不能只解析展示符号。 |
| Instrument交易品种 | Spot, dated future, perpetual, index, or mark price?现货、交割合约、永续、指数价还是标记价？ | Expose instrument type, expiry, contract size, and price methodology.显式返回品种类型、到期日、合约乘数和价格方法。 |
How to compare free crypto market data APIs如何比较免费的数字货币行情 API
| Criterion标准 | Verify需要验证 | Why it matters为什么重要 | Red flag风险信号 |
|---|---|---|---|
| Free access免费方式 | Keyless, registered tier, credits, expiry.无需密钥、注册套餐、额度、有效期。 | Determines onboarding and ongoing cost.决定接入速度和持续成本。 | “Free trial” presented as free forever.把短期试用写成永久免费。 |
| Coverage数据覆盖 | Assets, exchanges, fiat quotes, DEX data.币种、交易所、法币计价、DEX 数据。 | Prevents silent gaps in your product.避免产品出现隐性数据缺口。 | No stable IDs or coverage list.没有稳定 ID 或覆盖清单。 |
| Rate limits调用限制 | Requests per minute, monthly credits, bursts.每分钟请求、月额度、突发限制。 | Sets refresh frequency and caching design.影响刷新频率和缓存设计。 | Undocumented throttling or errors.未说明限流和错误行为。 |
| History and rights历史与许可 | Depth, intervals, attribution, commercial use.深度、周期、署名、商业使用。 | Protects backtests and production use.保障回测和生产用途。 | Terms do not match your use case.条款不允许你的使用场景。 |
Market cap normally means price multiplied by circulating supply. The number is misleading when the price is current but supply was last updated hours earlier, or when the provider substitutes total or fully diluted supply. Store the supply definition and timestamp beside the result. For example, a $2.00 reference price multiplied by 400 million circulating units produces an $800 million circulating market cap; using 1 billion maximum units instead produces a $2 billion fully diluted figure, which answers a different question.
A 24-hour volume field may sum spot pairs, converted quote currencies, derivative notional, or venue-reported numbers. The same economic trade can be visible through an exchange feed and an aggregator. Ask whether volume is venue-specific or consolidated, whether stablecoin quotes are converted to USD, which rolling-window boundary is used, and whether suspicious or duplicated markets are filtered.
A last trade is not the same as bid, ask, midpoint, volume-weighted average, index, or derivative mark price. A portfolio display may use a documented composite; a liquidation-risk monitor needs the venue's mark and index rules; an executable workflow needs current order-book liquidity. Name the price type in the schema instead of exposing a generic price with no method.
通常所说的市值，是价格乘以流通供应量。如果价格是刚更新的，而供应量还是数小时前的数据，结果就会失真；用总供应量或最大供应量替代流通量，也会把流通市值变成完全稀释估值。应把供应量口径和更新时间与结果一起保存。例如，2 美元参考价乘以 4 亿枚流通量，得到 8 亿美元流通市值；若改用 10 亿枚最大供应量，则是 20 亿美元完全稀释估值，两者回答的并不是同一个问题。
“24 小时成交量”可能包含现货交易对、不同计价货币换算值、衍生品名义金额或交易所自行上报的数据。同一笔经济交易还可能同时出现在交易所 feed 与聚合商数据中。接入前要确认它是单一场所还是综合口径、稳定币计价是否换算成美元、滚动窗口从何时开始，以及是否过滤异常或重复市场。
最新成交价、买一价、卖一价、中间价、成交量加权均价、指数价和永续合约标记价含义不同。投资组合展示可以使用方法透明的综合价；爆仓风险监控需要交易所的标记价与指数规则；可执行交易还要检查订单簿深度。响应结构应明确写出价格类型，不能只给一个没有口径的 price。
Match the API to the product you are building根据产品场景选择行情 API
The “best” free crypto market data API depends on the workload. A portfolio screen, research notebook, alerting service, and trading interface have different freshness, history, and reliability requirements. Define the decision in product terms before comparing provider feature lists.
不存在脱离场景的“最佳”免费行情 API。投资组合页面、研究脚本、价格提醒和交易界面对更新速度、历史深度与可靠性的要求不同。先定义产品任务，再比较供应商功能。
Portfolio and dashboard displays
Prioritize broad asset coverage, stable IDs, batched quotes, market cap, 24-hour volume, percentage change, and a refresh interval that matches what users can see. A 30–60 second cache may be adequate for an informational dashboard but not for execution decisions.
Alerts and monitoring
Look for predictable refresh behavior, timestamps, rate-limit headers, and enough quota to poll every tracked asset. Define deduplication and hysteresis so a price moving around a threshold does not trigger repeated alerts.
Research and backtesting
Historical depth, candle intervals, timezone, corporate methodology, survivorship, missing candles, and export rights matter more than headline request speed. Never treat a current-price endpoint as a historical dataset.
AI agents and automated workflows
Require machine-readable schemas, explicit units, bounded outputs, stable errors, and provenance. An agent should know when data is stale or unavailable instead of silently turning a missing value into a confident answer.
投资组合与行情看板
重点检查币种覆盖、稳定资产 ID、批量报价、市值、24 小时成交量、涨跌幅和刷新周期。信息展示可以接受适度缓存，但不能把缓存价格描述成实时成交价。
价格提醒与监控
需要明确更新时间、限流响应头和足够的轮询额度。还应设计去重和阈值回差，避免价格在临界点附近波动时重复推送提醒。
研究与回测
历史深度、K 线周期、时区、数据方法、缺失 K 线和导出许可比瞬时响应速度更重要。不能用当前价格端点代替历史数据集。
AI Agent 与自动化工作流
优先选择机器可读 schema、明确单位、稳定错误格式和可追溯来源。数据过期或不可用时，Agent 应显式失败，而不是把缺失值包装成确定答案。
Define a safe crypto market data response contract定义安全的行情数据响应契约
Provider payloads differ, so isolate them behind an internal contract. Normalize identity, value, time, provenance, and freshness once; let the rest of your application consume the stable shape. This reduces provider lock-in and makes fallbacks testable.
不同供应商的字段结构并不一致。建议在应用内部建立统一响应契约，一次性标准化资产身份、数值、时间、来源和新鲜度，其余业务只消费稳定结构。这样更容易替换供应商并测试降级逻辑。
| Field字段 | Recommended meaning建议含义 | Validation验证规则 |
|---|---|---|
asset_id | Stable provider or internal identifier, not only a ticker.稳定的供应商或内部资产 ID，不能只依赖 ticker。 | Non-empty and mapped to one asset.非空，并且只映射到一个资产。 |
network / contract_address | Chain-specific token identity when the asset is not a native coin.非原生币在特定链上的代币身份。 | Normalize address format and reject a symbol-only match.规范化地址格式，并拒绝仅凭符号匹配。 |
quote_currency | Currency or unit used for every numeric market value.所有行情数值使用的计价货币或单位。 | Explicit ISO-style code; never inferred from locale.显式代码，不能根据用户地区猜测。 |
price | Documented aggregate, reference, or venue price.有明确方法说明的聚合价、参考价或交易所价格。 | Finite, non-negative number with decimal precision preserved.有限且非负，保留必要小数精度。 |
instrument_type / price_type | Spot, future, perpetual, index, mark, midpoint, or composite.现货、期货、永续、指数、标记价、中间价或综合价。 | Must match the endpoint and intended decision.必须与端点及业务决策一致。 |
supply_value / supply_type | Circulating, total, or maximum supply used in valuation.估值采用的流通量、总供应量或最大供应量。 | Require a supply timestamp and do not silently substitute types.必须带供应量时间戳，不得静默替换口径。 |
observed_at | Time represented by the market observation.行情数据实际对应的观察时间。 | UTC timestamp; reject impossible future times.使用 UTC，并拒绝异常未来时间。 |
source | Provider, endpoint version, and optional venue scope.供应商、端点版本以及可选的交易场所范围。 | Stored with the value for audit and fallback analysis.与数值一起保存，便于审计和降级分析。 |
is_stale | Application decision based on your freshness threshold.根据业务新鲜度阈值得出的应用判断。 | Calculated from observed time, not provider marketing.根据观察时间计算，不能依赖宣传用语。 |
Example normalized payload: {"asset_id":"bitcoin","network":"bitcoin","instrument_type":"spot","quote_currency":"USD","price":67012.45,"price_type":"composite","observed_at":"2026-07-27T08:00:00Z","source":"provider/version","is_stale":false}. A token response would also require a contract address; a perpetual response would require venue, contract specification, index, mark, and funding fields.
标准化响应示例： {"asset_id":"bitcoin","network":"bitcoin","instrument_type":"spot","quote_currency":"USD","price":67012.45,"price_type":"composite","observed_at":"2026-07-27T08:00:00Z","source":"provider/version","is_stale":false}。如果返回的是链上代币，还应包含合约地址；如果返回永续合约，则还要提供交易场所、合约规格、指数价、标记价和资金费率字段。
Test a free crypto price API before integration接入前测试免费的实时币价 API
Confirm base URL, authentication, supported endpoints, free crypto API rate limits, attribution, and data licensing. Plans can change, so do not rely on an old comparison alone.
Use a documented REST API for cryptocurrency prices and ask for a widely covered asset in one quote currency. Record HTTP status, response time, headers, and body.
Check identifiers, numeric types, units, timestamps, nulls, pagination, and the response for an invalid asset or exceeded limit.
Cache within the license and freshness target. Decide whether stale data, a secondary provider, or a clear unavailable state is safest when the API fails.
确认基础 URL、鉴权、端点、免费调用限制、署名要求和数据许可。套餐会变化，不要只依赖旧的对比文章。
用文档中的数字货币 REST API 请求一个覆盖广泛的币种和一种计价货币，记录 HTTP 状态、耗时、响应头和响应体。
检查资产 ID、数值类型、单位、时间戳、空值、分页，以及无效资产或超过限流时的响应。
在许可和时效目标内缓存；API 失败时，明确选择陈旧数据、备用供应商或清晰的不可用状态。
Do not approve a provider from one successful Bitcoin request. Build a small, repeatable acceptance pack that exercises identity, valuation, history, and failure behavior. Save the raw response, response headers, retrieval time, expected interpretation, and pass/fail result for every case. Run the same pack again after a provider version or plan change so schema drift is visible before users see it.
不能因为一次比特币请求成功，就直接通过供应商验收。应准备一套可重复执行的小型测试集，覆盖资产身份、估值、历史数据和失败行为。每个用例都保存原始响应、响应头、抓取时间、预期含义和通过/失败结果；供应商版本或套餐变化后重新执行，避免 schema 漂移先影响用户。
| Acceptance request验收请求 | What it proves验证目标 | Fail the test when以下情况判为失败 |
|---|---|---|
| Native coin in USD原生币的美元报价 | Stable asset ID, quote unit, price type, and observation time.稳定资产 ID、计价单位、价格类型和观察时间。 | The timestamp is absent, the quote unit is inferred, or cached data is labelled live.缺少时间戳、计价单位依赖猜测，或把缓存数据标成实时。 |
| Same-symbol token on two networks两条链上的同名代币 | Network and contract address prevent symbol collisions.网络与合约地址能够避免符号冲突。 | Both requests resolve to one undifferentiated record.两个请求被解析为同一条无法区分的记录。 |
| Low-liquidity asset低流动性资产 | Null, stale, and outlier rules work when trading is sparse.交易稀疏时，空值、陈旧值和异常值规则仍有效。 | A single old trade becomes a current global price with no warning.一笔旧成交被无提示地当成当前全球价格。 |
| Historical boundary历史区间边界 | Inclusive dates, candle timezone, pagination, and missing intervals are documented.起止日期、K 线时区、分页和缺失周期有明确规则。 | Page boundaries duplicate candles or silently omit part of the range.分页边界重复 K 线，或静默漏掉部分区间。 |
| Invalid ID and exhausted quota无效 ID 与额度耗尽 | Not-found and rate-limit states are distinguishable and retryable only when safe.未找到与限流状态可区分，并且只在安全时重试。 | Both return HTTP 200 with an ambiguous empty value, or retries ignore Retry-After.两者都以 HTTP 200 返回含义不明的空值，或重试忽略 Retry-After。 |
Decision rule: separate coverage failure from provider failure. “This asset is not covered,” “the market is closed or inactive,” “the last valid value is stale,” and “the service is unavailable” must remain four different states. That distinction determines whether the application should show no data, preserve a labelled last value, try another provider, or stop an automated action.
判定规则：必须区分“资产未覆盖”和“供应商故障”。“没有覆盖该资产”“市场当前无成交”“最近有效值已经过期”“服务暂时不可用”是四种不同状态。只有分清这些状态，应用才能正确决定是显示暂无数据、保留并标记上一笔数据、切换备用供应商，还是停止自动操作。
Production checklist after the free API test免费 API 测试后的生产检查清单
A successful curl request proves only that one endpoint worked once. Before shipping, test the full operating envelope: normal traffic, bursts, invalid inputs, quota exhaustion, provider downtime, schema changes, and stale responses.
一次 curl 请求成功，只能证明某个端点在某个时刻可用。上线前还要覆盖正常流量、突发请求、错误输入、额度耗尽、供应商故障、schema 变化和过期响应。
Budget requests before choosing a plan
Estimate assets × refreshes × users × environments. Add retries and background jobs. Compare the resulting monthly calls with endpoint credit costs instead of comparing only advertised requests per minute.
Respect 429 and Retry-After
Back off with jitter, honor the documented retry window, and avoid synchronizing every worker into another burst. Do not turn rate limiting into an uncontrolled retry loop.
Cache with explicit freshness
Store observed time and fetched time separately. Serve cached data only when the product permits it, label stale values, and use single-flight request coalescing to prevent a cache stampede.
Monitor data quality, not only uptime
Track null rates, timestamp lag, unchanged values, asset mapping failures, extreme moves, and provider disagreement. A 200 response can still contain unusable data.
Plan the exit from the free tier
Document what triggers an upgrade or migration: quota, latency, commercial rights, historical depth, support, or reliability. Keep the normalized contract and provider adapter separate.
选套餐前先计算请求预算
估算币种数 × 刷新次数 × 用户数 × 环境数，并计入重试和后台任务。比较实际月请求量与端点 credit 成本，而不是只看宣传的每分钟请求数。
正确处理 429 与 Retry-After
使用带随机抖动的退避，遵守重试时间，避免所有 worker 同时再次突发请求。不能把限流变成失控重试循环。
带新鲜度信息的缓存
分别保存行情观察时间和抓取时间；只有业务允许时才返回缓存，并明确标记过期值。使用请求合并避免缓存击穿。
监控数据质量，而不仅是可用率
监控空值率、时间戳延迟、长期不变价格、资产映射失败、异常波动和供应商差异。HTTP 200 不代表数据一定可用。
提前规划离开免费套餐
明确升级或迁移触发条件：额度、延迟、商业许可、历史深度、支持或可靠性。保持内部响应契约与供应商适配器分离。
How QVeris helps discover crypto data capabilitiesQVeris 如何帮助发现加密货币数据能力
QVeris helps developers and agents discover, inspect, and call real-world capabilities, including financial-data tools. It does not make a third-party plan free or replace provider terms; it helps you evaluate an available capability and connect it to a workflow.
QVeris 帮助开发者和 Agent 发现、检查并调用真实世界能力，包括金融数据工具。它不会把第三方套餐变成免费，也不会替代供应商条款；它帮助你评估现有能力并接入工作流。
Use the QVeris Capability Map to narrow the required function, then consult the QVeris documentation before connecting a capability to an agent workflow.
先用 QVeris 能力地图明确所需功能，再阅读 QVeris 文档并把能力接入 Agent 工作流。
- Open the Coin Price by IDs tool to inspect its schema, supported inputs, and live crypto-price output.
- Inspect schemas and inputs before an agent calls an external data source.
- Keep provider authentication, limits, licensing, and output validation explicit in your application.
- 打开 按币种 ID 查询价格工具，查看其参数结构、支持的输入及实时加密货币价格输出。
- 在 Agent 调用外部数据源前检查 schema、输入和输出。
- 在应用中明确处理供应商鉴权、限流、许可和输出验证。
FAQ常见问题
Yes. Several providers offer keyless access, free registered plans, or trial credits. Compare current limits, licensing, coverage, and history before choosing.
Some public APIs allow keyless testing, but availability can change. Verify the provider’s current documentation and acceptable-use rules.
Choose a documented price endpoint, send an asset ID and quote currency, then validate the timestamp, units, status code, and rate-limit headers.
Sometimes. Free plans may include limited daily, hourly, or OHLCV history. Deeper history or smaller intervals may require payment.
Limits vary by provider and may combine per-minute requests, monthly credits, endpoint costs, and burst controls. Read current documentation.
At minimum: stable asset ID, quote currency, price, timestamp, and clear units. Market cap, volume, supply, source, and status add useful context.
有。常见形式包括无需密钥的公共接口、注册后的免费套餐和试用额度。选择前要核对当前限制、许可、覆盖和历史数据。
部分公共接口允许无需密钥测试，但政策会变化。请以供应商当前官方文档和可接受使用规则为准。
选择有文档的价格端点，传入资产 ID 和计价货币，再验证时间戳、单位、状态码与限流响应头。
部分提供有限的日线、小时线或 OHLCV 数据；更深历史和更细周期可能需要付费。
可能同时存在每分钟请求、每月额度、端点计费和突发限制，应查看当前官方说明。
至少应包含稳定资产 ID、计价货币、价格、时间戳和明确单位；市值、成交量、供应量、来源与状态可补充必要上下文。