effect-v4

Installation
SKILL.md

Effect v4

The CLI, @composio/cli-keyring, and @composio/json-schema-to-effect-schema run on Effect v4. Every claim below is grounded in the migrated source, not memory of v3.

Exact version matrix

effect, @effect/platform-bun, and @effect/vitest are pinned to the same exact 4.0.3 — never ^, @next, or a mismatched version across packages. @effect/cli and @effect/platform no longer exist as dependencies; their surfaces are consolidated into effect and effect/*. See versions.json for the full matrix (also typescript, vitest).

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