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How to analyze an existing profiler artifact without rerunning it with Flameox

Turn a saved profiler file into bounded evidence without running the workload again.

Short answer: Find the exact absolute path to your saved artifact file, such as an artifact.json from an earlier run; then run uvx flameox analyze preview_artifact /absolute/path/to/artifact.json with that path; review the returned evidence, noting the observed inputs and listed limitations. All steps.

Who it is forAn engineer who already has a profiler or trace file from an earlier run and needs a structured read of it.

The problemRerunning a slow or hard-to-reproduce workload just to read its profile wastes time and may change the result.

The outcomeBounded evidence extracted from the exact artifact file, with its provenance and limits recorded.

What you need first

  • Node.js (for npx) or uv (for uvx) installed
  • Python 3.12 or newer for the local development path
  • An absolute path to an existing artifact file, or an explicit command to run from an absolute working directory

Steps

  1. Find the exact absolute path to your saved artifact file, such as an artifact.json from an earlier run.
  2. Run uvx flameox analyze preview_artifact /absolute/path/to/artifact.json with that path.
  3. Review the returned evidence, noting the observed inputs and listed limitations.
  4. Keep the analysis_id only for the current session, since analysis IDs expire when evicted or when the server stops.

Prompt for your agent

Using the flameox repo, run `uvx flameox analyze preview_artifact <absolute artifact path>` on the file at <absolute artifact path>. Report the typed evidence and coverage, separating observed from derived claims. Verify that the artifact path you passed is the exact file and that no parent directory was searched.

Caveat. Flameox only reads the exact artifact path given and does not search parent directories, so the path must be correct and absolute.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for morluto/flameox and "Analyze an existing profiler artifact without rerunning it"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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