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Developer tool
Jevpipe
A command-line tool for fast, low-cost AI judgments across thousands of files, lines or records.
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Developer toolDiscovery Passport
Charter
Declare agent tools with Pydantic while Charter handles requests, authentication and wire formats.
Featured September 28, 2026Facts checked September 28, 2026Independently reviewed
UpPeek editorial take
Why it's worth a peek
Charter removes repetitive integration plumbing from agent tools while keeping schemas, credentials and response shaping explicit inside the developer's process.
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Declare API tools as Pydantic models
Discovery passport
Best for
- Python developers building tool-using agents
- Teams integrating agents with several APIs
- Builders who want local control instead of a proxy service
Discovery passport
What you can do
- Declare API tools as Pydantic models
- Inject API keys or OAuth credentials
- Trim large API responses before they enter model context
Discovery passport
What stands out
- Runs in-process with no proxy or Charter per-call fee
- Ships hundreds of declared tools across multiple APIs
- Apache-2.0 licensed open-source library
Pricing & availability
Before you try it
Available on: Web and open-source repository
UpPeek has not independently verified current pricing or plan limits. Check the official website before purchasing.
Source: Official website ↗. Product details can change; verify them on the official source before purchasing.
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About this listing
UpPeek selected and described this discovery independently. Inclusion does not imply a partnership or endorsement, and no unverified growth or performance result is shown.
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