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@mohanagy mohanagy released this 10 Jun 17:15
· 2 commits to main since this release
v0.28.1
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Learn about vigilant mode.

Stability hotfix for the semantic/rerank optional dependency.

Fixed

  • A retrieve call with semantic/rerank no longer kills the MCP server when the optional @huggingface/transformers package is missing: the rejection previously escaped the stdio serve loop unhandled, terminating the process mid-call so agents saw an infinite spinner instead of an error. Retrieve failures now return an MCP isError tool result the agent can read and react to, and the serve loop is hardened so no handler rejection can tear down the server.
  • A project-local npm install @huggingface/transformers now actually enables semantic/rerank: npx-launched and globally installed servers resolve the optional package from the project root (derived from the graph path) in addition to madar's own installation.
  • Failed semantic model loads no longer poison the pipeline cache: a rejected load is evicted, so installing the package and retrying succeeds without restarting the server.

Added

  • Semantic/rerank capability gating in the retrieve tool schema: tools/list omits the semantic, semantic_model, rerank, and rerank_model fields when the optional package is not resolvable, so agents never request a capability the machine lacks.
  • madar doctor now reports semantic/rerank availability with the exact enable command, without affecting overall health status.
  • Semantic model loads are bounded by a timeout (MADAR_MODEL_LOAD_TIMEOUT_MS, default 120s) so a stalled first-use model download cannot block the serial stdio request loop indefinitely.

Full notes: CHANGELOG 0.28.1

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