Plugin · Claude Code · Development Tools

Agent Sh Perf

agent-sh-perf is a Claude Code plugin for the Ship phase that guides baselines, profiling, and evidence-backed performance decisions.

by agent-sh · github.com/agent-sh/perf

Run a disciplined performance investigation with baselines, profiling, and hypothesis-driven fixes before you ship slow code.

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Install

Add it to Claude Code

Install the plugin in Claude Code. One command, paste-ready.

Install the plugin
/plugin install agent-sh-perf@agent-sh/perf
Add to ClaudeUse the Agent APISkillselion is itself an MCP server - your agent can fetch this config directly.
Agent API

Built to be called by your agent

Skillselion is itself an MCP server. Your agent can pull this entry and a paste-ready install config straight from the API - no copy-paste.

Retrieve this entry with skillselion.get_details("plugin:agent-sh/perf") and the paste-ready config with skillselion.get_install_config("plugin:agent-sh/perf").

About

What it does

agent-sh-perf packages a performance investigation methodology for builders who ship web apps, APIs, and CLIs and cannot afford vague advice like optimize the database. The plugin emphasizes baselines first: capture numbers, form hypotheses, profile the hot paths, then change one variable at a time with evidence that justifies each decision. That rhythm fits indie teams without a dedicated performance engineer—especially when a feature branch suddenly doubles p95 latency or memory spikes under agent-driven load tests. It spans Ship when you are clearing launch checklists and Operate when production metrics drift, but the catalog shelf stays Ship/perf because that is where most solo builders first feel pain. Intermediate complexity: you should be comfortable reading profiler output or simple benchmarks. Pair it with your existing test harness; it is a workflow skill, not a hosted APM product.

Highlights

  • Rigorous performance investigation workflow with explicit baselines
  • Profiling-guided steps instead of guess-and-check optimizations
  • Hypothesis tracking with evidence-backed accept or reject decisions
  • Suited to regressions caught in CI or staging before production ship
  • agent-sh perf plugin bundle (single plugin entry in catalog)

Why builders use it

Performance regressions stall launches because optimizations are anecdotal instead of measured against clear baselines and profiles.

You follow a repeatable investigation path from baseline to profile to validated fix, with documented evidence for each performance decision.

At a glance

  • Type - Plugin in Development Tools.
  • Adoption - 0 installs, 2 stars, 0 votes.

FAQ

Who is agent-sh-perf for?

Developers shipping backends or full-stack products who want agent-guided performance investigations with baselines and profiling, not random tuning tips.

When should I use agent-sh-perf?

Use it when latency, throughput, or memory regressed and you need hypotheses tested against measurements before merging or releasing.

How do I add agent-sh-perf to my agent?

Add the agent-sh/perf Claude Code plugin from Skillselion, ensure your project can run benchmarks or profilers locally, and start the perf workflow from the plugin commands.

Discussion

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