{"record":{"id":"9a77afbd982ed620","repo":"hsliuping/TradingAgents-CN","slug":"alpha-vantage-api-rate-limit-exceeded-please-wait","errorCode":null,"errorMessage":"Alpha Vantage API rate limit exceeded. Please wait a moment and try again, or upgrade your API plan.","messagePattern":"Alpha Vantage API rate limit exceeded\\. Please wait a moment and try again, or upgrade your API plan\\.","errorType":"error_code","errorClass":"AlphaVantageRateLimitError","httpStatus":429,"severity":"error","filePath":"tradingagents/dataflows/providers/us/alpha_vantage_common.py","lineNumber":220,"sourceCode":"            data = response.json()\n            \n            # 检查错误信息\n            if \"Error Message\" in data:\n                error_msg = data[\"Error Message\"]\n                logger.error(f\"❌ [Alpha Vantage] API 错误: {error_msg}\")\n                raise AlphaVantageAPIError(f\"Alpha Vantage API Error: {error_msg}\")\n            \n            # 检查速率限制\n            if \"Note\" in data and \"API call frequency\" in data[\"Note\"]:\n                logger.warning(f\"⚠️ [Alpha Vantage] 速率限制: {data['Note']}\")\n                \n                if attempt < max_retries - 1:\n                    wait_time = retry_delay * (attempt + 1)\n                    logger.info(f\"⏳ 等待 {wait_time} 秒后重试...\")\n                    time.sleep(wait_time)\n                    continue\n                else:\n                    raise AlphaVantageRateLimitError(\n                        \"Alpha Vantage API rate limit exceeded. \"\n                        \"Please wait a moment and try again, or upgrade your API plan.\"\n                    )\n            \n            # 检查信息字段（可能包含限制提示）\n            if \"Information\" in data:\n                info_msg = data[\"Information\"]\n                logger.warning(f\"⚠️ [Alpha Vantage] 信息: {info_msg}\")\n                \n                # 如果是速率限制信息\n                if \"premium\" in info_msg.lower() or \"limit\" in info_msg.lower():\n                    if attempt < max_retries - 1:\n                        wait_time = retry_delay * (attempt + 1)\n                        logger.info(f\"⏳ 等待 {wait_time} 秒后重试...\")\n                        time.sleep(wait_time)\n                        continue\n                    else:\n                        raise AlphaVantageRateLimitError(","sourceCodeStart":202,"sourceCodeEnd":238,"githubUrl":"https://github.com/hsliuping/TradingAgents-CN/blob/74783e8817d6cf6de29867880631cc555153f36b/tradingagents/dataflows/providers/us/alpha_vantage_common.py#L202-L238","documentation":"Raised as AlphaVantageRateLimitError when the response contains an 'Note' about API call frequency and all retry attempts (with linear backoff) have been exhausted. Free Alpha Vantage keys are limited to ~25 requests/day (5/min historically).","triggerScenarios":"Bursting requests until the daily/minute quota is hit — the built-in retries sleep and retry, then re-raise this error when the limit persists across all attempts.","commonSituations":"Batch-importing many US symbols with a free key, polling loops without throttling, or sharing a key across multiple services.","solutions":["Wait for the quota window to reset (up to a minute for rate limit, next day for daily cap) and throttle callers to ≤5 req/min","Upgrade the Alpha Vantage plan or use a premium key","Cache responses and add a request budget/semaphore around _make_api_request"],"exampleFix":"# before\nfor sym in symbols:\n    _get_us_quote_from_alpha_vantage(sym)  # no throttle\n# after\nfor sym in symbols:\n    _get_us_quote_from_alpha_vantage(sym)\n    time.sleep(13)  # ~4-5 req/min on free tier","handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"from tradingagents.dataflows.providers.us.alpha_vantage_common import AlphaVantageRateLimitError\ntry:\n    data = _make_api_request(params)\nexcept AlphaVantageRateLimitError:\n    time.sleep(65)\n    data = _make_api_request(params)  # single patient retry","preventionTips":["Throttle to ≤5 requests/min with a token bucket","Cache responses (quotes rarely change intra-minute)","Budget daily calls; stop fetching when near the free-tier cap","Consider a paid plan for batch workloads"],"tags":["python","alpha-vantage","rate-limit","retry"],"backgroundTag":"api-rate-limit-exceeded","analyzedSha":"74783e8817d6cf6de29867880631cc555153f36b","analyzedAt":"2026-08-28T11:39:07.729Z","schemaVersion":2},"datasetVersion":"2026-08-28T16:17:29.566Z"}