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Arize Phoenix client 7.6.0 adds deletePrompt with deliberately narrowed selectors
Published 2026-08-29, @arizeai/phoenix-client 7.6.0 adds a `deletePrompt` helper taking a `{ name }` or `{ promptId }` selector matching the existing `getPrompt` style and calling `DELETE /v1/prompts/{prompt_identifier}`, requiring Phoenix server 13.20.0 or later. Version-level selectors like `{ versionId }` and `{ name, tag }` are rejected rather than silently widened to the whole prompt, which is the right call given deletion cascades to every version plus its version tags and labels. The phoenix-cli 1.16.2 and phoenix-mcp 4.3.4 releases are dependency bumps picking this up.
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