Expired50% confidenceFactExact time
Anthropic's API keys typically have the prefix sk-ant-.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
VerifiedAnthropic's API authentication requires setting the x-api-key and anthropic-version fields in the request header.66% similarUnverifiedAPI Key格式通常为sk-ant-开头的长字符串，可配置在Claude Code、Cursor、Continue等客户端或IDE插件中使用62% similarUnverifiedAnthropic uses its own API format rather than being compatible with the OpenAI interface standard, which deepens vendor lock-in effects.61% similarUnverifiedModern AI programming tools generally use API keys or OAuth tokens as access credentials, which are attached to the Authorization field of HTTP request headers.57% similarUnverifiedAnthropic采用显式标记缓存方案，OpenAI采用服务端自动识别策略，DeepSeek通过前缀哈希匹配实现完全透明的自动缓存57% similar
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https://kongchang.com/claim/51178API
curl https://kongchang.com/api/v1/knowledge/claims/51178MCP
get_claim(id=51178)