Charter, field-level control over agents' calls into customer accounts
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Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
Charter is an open-source Python library that puts a validation layer between AI agents and customer-account APIs. Each tool is a Pydantic model mirroring the API's fields, with developer-defined rules checked before any request is sent.