> ## Documentation Index > Fetch the complete documentation index at: https://alltick.co/apis/llms.txt > Use this file to discover all available pages before exploring further. # HTTP Interface Restrictions > This page explains HTTP Interface Restrictions, covering AllTick API integration flow, token setup, standard headers, endpoint addresses, rate limits and error codes. ### **1. Frequency Limits** | Plan | Individual Request | Multiple HTTP Interfaces Requested Together | | - | - | - | | Free | **/kline:** one request every 10 seconds **/batch-kline:** one request every 10 seconds **/depth-tick:** one request every 10 seconds **/trade-tick:** one request every 10 seconds **/static\_info:** one request every 10 seconds **/api/suspension/sse:** one request every 1 minute **/api/suspension/nyse:** one request every 1 minute **/api/suspension/nasdaq:** one request every 1 minute | 1. Only one interface can be requested every 10 seconds. 2. Note that /batch-kline requires a 10-second interval. 3. All interfaces combined: maximum 10 requests per minute (one every 6 seconds). 4. Maximum 1,000 requests per day; usage resumes after midnight the next day if exceeded. | | Basic | **/kline:** one request per second **/batch-kline:** one request every 3 seconds **/depth-tick:** one request per second **/trade-tick:** one request per second **/static\_info:** one request per second **/api/suspension/sse:** one request every 1 minute **/api/suspension/nyse:** one request every 1 minute **/api/suspension/nasdaq:** one request every 1 minute | 1. Only one interface can be requested in the same second. 2. Note that /batch-kline requires a 3-second interval. 3. All interfaces combined: maximum 60 requests per minute (one per second). 4. Maximum 86,400 requests per day; usage resumes after midnight the next day if exceeded. | | Premium | **/kline:** up to 10 requests per second **/batch-kline:** one request every 2 seconds **/depth-tick:** up to 10 requests per second **/trade-tick:** up to 10 requests per second **/static\_info:** up to 10 requests per second **/api/suspension/sse:** one request every 1 minute **/api/suspension/nyse:** one request every 1 minute **/api/suspension/nasdaq:** one request every 1 minute | 1. All interfaces combined: up to 10 requests per second. 2. Note that /batch-kline requires a 2-second interval. 3. All interfaces combined: maximum 600 requests per minute (10 per second). 4. Maximum 864,000 requests per day; usage resumes after midnight the next day if exceeded. | | Professional | **/kline:** up to 20 requests per second **/batch-kline:** one request per second **/depth-tick:** up to 20 requests per second **/trade-tick:** up to 20 requests per second **/static\_info:** up to 20 requests per second **/api/suspension/sse:** one request every 1 minute **/api/suspension/nyse:** one request every 1 minute **/api/suspension/nasdaq:** one request every 1 minute | 1. All interfaces combined: up to 20 requests per second. 2. Note that /batch-kline requires a 1-second interval. 3. All interfaces combined: maximum 1,200 requests per minute (20 per second). 4. Maximum 1,728,000 requests per day; usage resumes after midnight the next day if exceeded. | | All Hong Kong Stocks | Same as Professional | Same as Professional | | All A Shares | Same as Professional | Same as Professional | | All US Stocks | Same as Professional | Same as Professional | ### **2. IP Limits** * HTTP interfaces limit request frequency only by Token and do not restrict IP addresses. * **Example**: the Basic plan allows one request per second. If a Token requests `/kline` once at 14:03:01 and calls `/trade-tick` once in the same minute, the backend service will respond normally. If the same Token sends two `/kline` requests within 14:03:01, the first request will be served normally and the second request will receive an error response. ### **3. K-line Query Limits** * **/kline:** each query request can request K-line data for only one product code. Each query returns at most 500 K-lines. If more than 500 K-lines are requested, the system queries and returns 500. * **/batch-kline:** each query request can request K-line data for multiple product codes. The number of code/type groups allowed per batch varies by plan. Each query returns at most 2 K-lines. If more than 2 K-lines are requested, the system queries and returns 2. | Plan | Maximum code/type groups for /batch-kline | | - | - | | Free | Up to 5 groups per request. One group = one product + one K-line type. For example, requesting BTCUSDT 1-minute and 5-minute K-lines counts as 2 groups. | | Basic | Up to 100 groups per request. | | Premium | Up to 200 groups per request. | | Professional | Up to 500 groups per request. | | All Hong Kong Stocks | Up to 500 groups per request. | | All A Shares | Up to 500 groups per request. | | All US Stocks | Up to 500 groups per request. | ### **4. Latest Trade Price Query Limits** * **/trade-tick:** each query request can request the latest trade price for multiple product codes. The number of codes allowed per batch varies by plan. * If the request exceeds the number of codes allowed by the plan, the system only queries and returns results for the first codes within the allowed number. | Plan | Maximum codes per request | | - | - | | Free | Up to 5 codes per request. | | Basic | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | | Premium | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | | Professional | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | | All Hong Kong Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | | All A Shares | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | | All US Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/trade-subscription.md) | ### **5. Order Book Query Limits** * **/depth-tick:** each query request can request order book data for multiple product codes. The number of codes allowed per batch varies by plan. * If the request exceeds the number of codes allowed by the plan, the system only queries and returns results for the first codes within the allowed number. | Plan | Maximum codes per request | | - | - | | Free | Up to 5 codes per request. | | Basic | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | | Premium | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | | Professional | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | | All Hong Kong Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | | All A Shares | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | | All US Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. For more batch subscriptions, use the WebSocket interface: [Interface](https://alltick.co/apis/apis/en/websocket/depth-subscription.md) | ### **6. Static Information Query Limits** * **/static\_info:** each query request can request static information for multiple product codes. The number of codes allowed per batch varies by plan. * If the request exceeds the number of codes allowed by the plan, the system only queries and returns results for the first codes within the allowed number. | Plan | Maximum codes per request | | - | - | | Free | Up to 5 codes per request. | | Basic | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | | Premium | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | | Professional | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | | All Hong Kong Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | | All A Shares | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | | All US Stocks | Due to GET URL length limits, a maximum of 50 codes per request is recommended. | #### Notes * Plan your request strategy according to these limits to avoid unnecessary service interruptions. * These limits ensure fair service access for all users and protect backend systems from excessive load. * If you have questions or need further help, contact customer support. 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