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performance

v0.2.9

Measurement-first optimization workflow for an arbitrary target, built around refusing to report what the data does not support. Five skills: target (identify and rank optimization candidates by evidence quality rather than suspicion, so an unmeasured target makes "instrument this first" the recommendation instead of a guess), goal (human-gated goal construction that holds a realistic target and an ideal target separately and computes the irreducible floor BEFORE any work, so a target below the floor is surfaced as unreachable-by-any-code-change up front rather than discovered as a failed goal at the end), snapshot (baseline and post capture with the host qualified first: repeated no-op spawns characterize the machine's own noise, a drift-immune counter is reported alongside and ranked above any duration, before/after arms are interleaved within one run rather than compared across two passes, and a wall-clock claim is REFUSED outright from a host whose spread carries the bimodal contention signature, naming the counter it can still report instead), verify (fresh-context adversarial re-derivation that does not inherit the implementer's numbers, plus a report that states a target as met or not met and never rounds a miss into a win), and protect (locks in a proven counter win with a checked-in counter ceiling, a CI check that fails when the counter rises, and a lower ceiling when the counter falls, in the same PR or by a scheduled draft PR, never merging). A technique catalog and a glossary back every skill step. Gates hard-block, with a named override recorded in the report. Every gate ships with a discrimination check proving it fails when its condition is unmet, because a check that passes whether or not the condition holds is worse than no check: it reports success. Normative claims carry a source tier, and the ones the benchmarking literature does not ground (sample counts, the p95 convention, counts-over-time for anything but instruction counts) are labeled as house rules rather than dressed as consensus.

Claude Code5 Skills

By Melodic SoftwareLicense: MIT20 GitHub starsUpdated 58 minutes ago

Directory evidence

Runtimes
Claude Code
Parsed components
5 skill or MCP entries
Source updated
Sep 28, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install performance for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install performance-2@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/melodic-software/claude-code-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/performance/.

Plugin files

plugins/performance/
├── .claude-plugin/plugin.json
├── skills/goal/SKILL.md
├── skills/protect/SKILL.md
├── skills/snapshot/SKILL.md
├── skills/target/SKILL.md
└── skills/verify/SKILL.md

Included Skills5

goalskills/goal/SKILL.md

Construct a performance goal the data can settle: metric, command, realistic vs ideal targets, and the floor before any work. Surfaces 'your target is below the measured floor, no code change can reach it' up front. Human-gated; never unattended. Use when: 'set a performance target', 'is this target achievable', 'define done for this optimization', 'what is the floor here'. After /performance:target, before /performance:snapshot.

protectskills/protect/SKILL.md

Lock in a verified performance win: ratchet its counter in CI with a checked-in ceiling, so a regression fails the build and a lower count proposes a lower ceiling by PR. Proposes files; a human approves and merges. Use when: 'protect this win', 'ratchet this counter', 'stop this regressing', 'add a performance guardrail to CI'. Runs once after /performance:verify reports MET on a counter. Skip when the result is a duration only, or NOT MET.

snapshotskills/snapshot/SKILL.md

Capture a baseline or post-change snapshot with the host qualified first: refuse a wall-clock claim from a bimodal-contention host and name the drift-immune counter instead. Interleaves before/after arms in one run. Use when: 'capture a baseline', 'take a post snapshot', 'run the A/B', 'can I even measure here'. Runs after /performance:goal; hands off to /performance:verify. Skip when no goal with a computed floor exists, or when the claim is code shape (/verification:measure).

targetskills/target/SKILL.md

Identify and rank optimization targets by evidence quality, so an unmeasured system yields 'instrument this first' instead of a guess. Accepts session pain, a named path, telemetry, or open-ended 'what is slow here'. Use when: 'what should we optimize', 'find the bottleneck', 'this feels slow', 'is X worth optimizing'. Hands off to /performance:goal. Skip when the target is already chosen and measured, or when a failure needs debugging rather than a candidate ranking.

verifyskills/verify/SKILL.md

Re-derive a performance result in a fresh context that does not inherit the implementer's numbers, then report the target as met or not met without rounding a miss into a win. Use when: 'verify this speedup', 'is this result real', 'independent verification', 'write up the performance result'. Final phase after /performance:snapshot post. Skip when no baseline exists, or when reviewing a diff for general quality rather than a measured claim.

Plugin manifests1

plugins/performance/.claude-plugin/plugin.json
{
  "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
  "name": "performance",
  "version": "0.2.9",
  "description": "Measurement-first optimization workflow for an arbitrary target, built around refusing to report what the data does not support. Five skills: target (identify and rank optimization candidates by evidence quality rather than suspicion, so an unmeasured target makes \"instrument this first\" the recommendation instead of a guess), goal (human-gated goal construction that holds a realistic target and an ideal target separately and computes the irreducible floor BEFORE any work, so a target below the floor is surfaced as unreachable-by-any-code-change up front rather than discovered as a failed goal at the end), snapshot (baseline and post capture with the host qualified first: repeated no-op spawns characterize the machine's own noise, a drift-immune counter is reported alongside and ranked above any duration, before/after arms are interleaved within one run rather than compared across two passes, and a wall-clock claim is REFUSED outright from a host whose spread carries the bimodal contention signature, naming the counter it can still report instead), verify (fresh-context adversarial re-derivation that does not inherit the implementer's numbers, plus a report that states a target as met or not met and never rounds a miss into a win), and protect (locks in a proven counter win with a checked-in counter ceiling, a CI check that fails when the counter rises, and a lower ceiling when the counter falls, in the same PR or by a scheduled draft PR, never merging). A technique catalog and a glossary back every skill step. Gates hard-block, with a named override recorded in the report. Every gate ships with a discrimination check proving it fails when its condition is unmet, because a check that passes whether or not the condition holds is worse than no check: it reports success. Normative claims carry a source tier, and the ones the benchmarking literature does not ground (sample counts, the p95 convention, counts-over-time for anything but instruction counts) are labeled as house rules rather than dressed as consensus.",
  "author": {
    "name": "Melodic Software",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": [
    "performance",
    "benchmarking",
    "baseline",
    "measurement",
    "optimization",
    "noise-characterization",
    "drift-immune-counter",
    "interleaved-ab",
    "skill"
  ]
}

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[performance on Agent Plugins Marketplace](https://pluginsmp.com/plugins/performance-2)