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Usage specs are agent-optimized documentation for thousands of open source libraries. They are versioned like packages and can be installed and kept up-to-date with Tessl.
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Discover OSS specs instantly across web, CLI, and MCP. Dependencies map directly to usage specs, using the package names you know
Specs that update with your code
Specs match and update across your project automatically, preventing version conflicts, staying current with fixes, and reducing maintenance overhead
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