Building a Claude Plugin, Part 2

Short summary

Part 2 of a series on building Claude plugins covers the practical steps for publishing to the Anthropic marketplace. Key lessons include treating the manifest as the single source of truth, pinning every dependency to a tested version, and ensuring PyPI metadata is complete with valid classifiers. The marketplace runs plugins in clean containers with strict validation, so local sandbox success doesn't guarantee approval. Naming conventions for entry points and incremental version bumps also reduce review friction.

• •Treat the plugin manifest as single source of truth; validate locally before each submission
• •Pin all dependencies to specific tested versions to avoid cross-environment runtime errors
• •Ensure PyPI metadata is complete with valid license identifiers and classifiers to pass automated scanning

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