Unverified50% confidenceFactExact time
HTTP status code 429 indicates server-side rate limiting, usually accompanied by a Retry-After header; HTTP 403 indicates access is directly denied, possibly due to an IP blacklist, a User-Agent identified as a crawler, or missing authentication information.
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50%
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Long-term
Relevance
10/13/2026
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Related Claims
UnverifiedThe HTTP 402 status code was defined in the HTTP/1.0 specification in 1991, originally envisioned for access control of digital paid content, but remained reserved and unused for a long time due to the lack of viable micropayment infrastructure.71% similarUnverifiedHTTP status code 429 (Too Many Requests) is the standard response mechanism used by servers to implement rate limiting.71% similarUnverified529 Site is Overloaded is not a standard HTTP status code but an extension status code proprietary to the Anthropic API, used to indicate that the server is temporarily unable to handle requests due to a momentary surge in traffic.70% similarUnverifiedHTTP协议提供301/302重定向机制来缓解URL变更的影响，但依赖网站管理员主动配置且服务器需持续运行67% similar
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