Choose a Free Options API
Chains, Greeks & Market Data选择免费期权 API
比较期权链、希腊值与市场数据
Compare free options data for chains, quotes, Greeks, implied volatility, and history—then verify delay, limits, coverage, and licensing.
比较免费期权 API 提供的期权链、报价、希腊值、隐含波动率与历史数据，
并在接入前核对数据延迟、请求频率限制、覆盖范围和授权条款。
Quick Summary快速摘要
Typical entry plans expose option chains, contract quotes, expirations, strikes, volume, open interest, and sometimes Greeks or implied volatility.
Check quote delay, venue coverage, request limits, contract history, Greeks methodology, redistribution rights, and commercial-use terms.
A scanner, live dashboard, order assistant, and historical backtest need different clocks, schemas, capacity, and licensing.
A current chain endpoint does not prove that expired contracts or point-in-time quotes can be retrieved later.
常见的入门级免费套餐会提供期权链、合约报价、到期日、行权价、成交量和未平仓量，有时还会提供希腊值或隐含波动率。
需要核对行情延迟、交易所覆盖范围、请求频率限制、历史合约数据、希腊值计算口径、数据再分发权限以及商业使用条款。
行情扫描器、实时看板、下单助手和历史回测对数据时钟、字段结构、吞吐量与许可范围的要求并不相同。
能够获取当前期权链，并不代表以后可以查询已到期合约或严格时点的历史报价。
Which options API endpoints do you need?你需要哪些期权 API 接口？
Start with the workflow rather than a provider list. A usable options integration is rarely one endpoint: contract reference data identifies the instrument, chain discovery finds listed expirations and strikes, quotes and trades describe market state, daily fields add volume and open interest, and model endpoints may calculate implied volatility or Greeks.
选型应从工作流出发，而不是先罗列供应商。可用的期权集成通常不止一个接口：合约参考数据负责确认标的身份，期权链接口发现已挂牌的到期日和行权价，报价与成交接口描述市场状态，日度字段补充成交量和未平仓量，模型接口则可能计算隐含波动率和希腊值。
Expirations, strikes, call/put flags, contract symbols, exercise style, multiplier, deliverable, and listing status.
Bid, ask, last trade, quote size, volume, open interest, session status, and timestamps. Confirm whether values are live, delayed, or end-of-day.
Implied volatility, delta, gamma, theta, vega, and rho are calculated fields. Preserve the calculation time and, where supplied, the underlying price, rate, dividend, and model inputs.
Backtests need expired contracts, delisted strikes, corrections, and observations as they were known then—not a present-day chain joined to revised data.
到期日、行权价、看涨或看跌标识、合约代码、行权方式、合约乘数、交割标的和挂牌状态。
买价、卖价、最新成交价、买价与卖价的报价数量、成交量、未平仓量、交易时段状态，以及报价和成交时间戳。确认这些行情数据是实时、延迟还是日终数据。
隐含波动率、Delta、Gamma、Theta、Vega 和 Rho 都是计算字段。应保留计算时间；若接口提供，还要记录标的价格、利率、股息与模型输入。
回测需要保留已到期合约、退市行权价、后续更正和当时实际可见的观测值，不能用当前期权链拼接后来修订的数据代替。
How free options APIs compare如何对比免费期权 API
No single source fits every options workflow. Exchange-backed resources are useful for authoritative contract and market-structure checks; vendor APIs normalize chains and analytics; broker APIs may expose entitled quotes for an account; downloadable datasets are convenient for repeatable research.
没有任何一种数据源能够满足所有期权工作流的需求。交易所数据适合核验权威的合约资料和市场结构信息；数据供应商 API 可提供标准化的期权链和分析指标；券商 API 可能提供账户已获授权的行情数据；可下载数据集则便于开展可重复的研究。
| Source来源 | What it offers提供内容 | Best for适合场景 | Watch for注意事项 |
|---|---|---|---|
| Exchange-backed source交易所数据源 | Contract directories, delayed quotes, specifications, and market notices.合约目录、延迟行情、合约规范和市场公告。 | Verification and primary-source research.信息核验与一手资料研究。 | Data may be fragmented or subject to display terms.数据可能较为分散，且其展示方式可能受相关条款约束。 |
| Free options-data API免费期权数据 API | Normalized chains, quotes, Greeks, IV, and selected history.标准化的期权链、行情、希腊值、隐含波动率及部分历史数据。 | Apps, agents, prototypes, and research pipelines.应用、智能体、原型和研究流程。 | Rate limits, delays, history gaps, and license restrictions.请求频率限制、数据延迟、历史数据缺口和许可限制。 |
| Broker API券商 API | Account-entitled quotes, positions, orders, and trading context.账户已获授权的行情数据，以及持仓、订单和交易相关信息。 | Personal monitoring and execution workflows.个人行情监控与交易执行流程。 | Requires an eligible account; redistribution is usually restricted.通常需要符合资格的账户，而且一般不得再次分发数据。 |
| Historical bulk dataset历史批量数据集 | Portable files containing expired contracts, quotes, trades, or analytics.便于下载和处理的文件，包含已到期合约、历史行情、成交记录或分析指标。 | Notebooks, model research, and backtests.交互式笔记本分析、模型研究与回测。 | Free samples may cover only short periods or limited underlyings.免费样本可能只覆盖较短的时间范围或少数标的资产。 |
Compare sources with the same test set: one liquid near-the-money contract, one far expiration, one thinly traded strike, and one adjusted contract. Compare symbology, timestamps, bid/ask freshness, open interest date, Greeks methodology, missing contracts, and error messages. Identical field names do not guarantee identical calculations.
对比时应使用同一组测试样本：一份流动性较高的平值合约、一份到期日较远的合约、一份行权价对应成交较少的合约，以及一份调整后合约。逐项核对合约代码规则、时间戳、买卖报价时效、未平仓量统计日期、希腊值计算方法、缺失的合约记录和错误信息。字段名称相同，并不代表计算口径一致。
Test a free options API before integration接入免费期权 API 前怎样测试
1. Write a concrete acceptance query1. 先写出明确的验收请求
Use one liquid underlying, a known expiration, a narrow strike range, and an explicit data clock. State the fields required by the application and which may be null. This turns a vague feature comparison into a reproducible test.
选择一个流动性较好的标的、一个已知到期日和较窄的行权价范围，并明确所需数据时点。列出应用必需字段和允许为空的字段，才能把模糊的功能对比转化为可复现测试。
2. Measure the real cost of a chain2. 测量整条期权链的真实成本
Count pagination, per-contract follow-up calls, retries, expiration discovery, and underlying quotes. A nominal requests-per-minute allowance may support far fewer refreshed chains than expected, especially when Greeks require a separate endpoint.
把分页、逐合约补充请求、重试、到期日发现和标的行情调用全部计入。如果希腊值还需要单独接口，名义上的每分钟请求额度能够支撑的完整期权链刷新次数，往往比预期少得多。
3. Validate identity, clocks, and nulls3. 校验身份、时间与空值
- Parse the standardized contract symbol and cross-check expiration, strike, and call/put side.
- Keep quote, trade, open-interest, model-calculation, and receipt timestamps separate.
- Distinguish zero from missing, not entitled, not calculated, and market closed.
- Test adjusted contracts and thin strikes instead of validating only at-the-money contracts.
- 解析标准化合约代码，并与到期日、行权价和认购认沽方向交叉核验。
- 分别保存报价、成交、未平仓量、模型计算和应用接收时间。
- 区分数值为零、字段缺失、无权限、未计算和市场休市等状态。
- 除平值合约外，还应测试调整后合约和成交稀疏的行权价。
4. Confirm production rights and failure behavior4. 确认生产权限与失败行为
Verify storage, display, redistribution, end-user, and commercial-use terms. Then force invalid symbols, exhausted quotas, timeouts, and partial pages. Production code should preserve the last valid snapshot, surface staleness, and avoid silently treating an incomplete chain as a complete one.
核对数据保存、展示、再分发、终端用户和商业使用条款，再主动测试无效代码、额度耗尽、超时和分页不完整等情况。生产代码应保留最后一份有效快照、明确显示数据陈旧程度，并避免把残缺期权链悄悄当成完整结果。
Use QVeris to find options data capabilities使用 QVeris 查找期权数据接口
The exact QVeris Options Chain Tool is a verified match for current calls and puts organized by expiration and strike, with bid, ask, volume, and open interest among its documented fields. Test it in the QVeris Playground before assuming symbol coverage, history, Greeks, or exchange entitlements.
已核实的强相关入口是 QVeris Options Chain 工具。其文档字段包含按到期日和行权价组织的认购、认沽合约，以及买价、卖价、成交量和未平仓量。正式使用前可先在 QVeris Playground 做小规模测试，不能直接假定它覆盖所有代码、历史数据、希腊值或交易所权限。
FAQ常见问题
Yes. Many providers offer free tiers for chains, Greeks, or historical contracts, usually with request limits, delayed data, or restricted exchange coverage.
Sometimes, but often they are delayed or limited to specific venues. Always inspect timestamps, entitlements, and exchange-coverage notes.
No. A valid backtest needs point-in-time observations, expired contracts, and the information set available on each historical date.
No. Models, inputs, timestamps, rates, dividends, and smoothing can differ. Compare the methodology before mixing calculated fields.
有。许多服务商针对期权链、希腊值或历史期权合约数据提供免费套餐，但通常设有请求频率限制，数据也可能存在延迟，或仅覆盖部分交易所。
部分服务会提供实时数据，但许多接口的数据存在延迟，或仅覆盖特定交易场所。务必核对时间戳、数据访问权限和交易所覆盖说明。
不能。有效回测需要严格时点的历史观测、已到期合约，以及每个历史日期当时真正可获得的信息集。
不可以直接混用。模型、输入、时间戳、利率、股息和数据平滑方式都可能不同，应先对比计算口径。
References and next steps参考资料与下一步
Cboe delayed quotes
Tradier option chains
Polygon options API
Alpha Vantage options documentation