Unverified50% confidenceFactExact time
An Anthropic API Key is the identity credential for calling the Claude model interface, and its format typically starts with sk-ant-.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/15/2026
First Seen
Valid until: 12/14/2026
Sources
Related Entities
Related Claims
UnverifiedAnthropic's API keys typically have the prefix sk-ant-.79% similarVerifiedAnthropic's API authentication requires setting the x-api-key and anthropic-version fields in the request header.70% similarUnverifiedAPI Key format is typically a long string beginning with sk-ant-, and can be configured for use in clients or IDE plugins such as Claude Code, Cursor, and Continue69% similarUnverifiedAn API Key is essentially an authentication token used to establish a trusted connection between the client and the AI model provider.68% similarVerifiedClaude Code supports connecting to third-party model services compatible with the OpenAI interface specification by configuring custom API endpoints and API keys.67% similar
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