Pydantic AI
An MIT licensed Python agent framework from the Pydantic team that types the agent loop end to end and validates tool arguments and outputs with Pydantic models.
Framework is free and open source under MIT. The optional Logfire observability service is a separate commercial product with its own free tier and usage based metering.
Open source
Appears in 1 guide
Where it ranks
Guides that include Pydantic AI.
Security headers
What Pydantic AI's website sends to your browser.
Scanned 2026-08-25. Grade headers F, scoring 25 out of 100.
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No Content-Security-Policy, so no defence in depth against cross-site scripting
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No Strict-Transport-Security, so browsers may still attempt plain HTTP
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X-Content-Type-Options: nosniff is set
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No X-Frame-Options and no CSP frame-ancestors, so clickjacking is possible
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Referrer-Policy is set
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No Permissions-Policy, so powerful browser features are not restricted
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No Cross-Origin-Opener-Policy
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No Cross-Origin-Resource-Policy
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No server-version or X-Powered-By disclosure
This is one narrow, automated check of the HTTP response headers on the vendor's own website. It says nothing about how the product itself is built, how it stores your data, or whether it has ever been audited. A good grade here is a small signal that somebody was paying attention.