hatch3r-performance

hatch3r-performance is an agent for coding agents from hatch3r/hatch3r. It costs 49 tokens per session (4,794 once invoked), scanned A, original, MIT.

A software-review agent focused on performance: how quickly pages respond, how fast servers answer, how much JavaScript is shipped, and whether database access repeats unnecessary work. Core Web Vitals are standard browser measures such as loading speed, responsiveness, and layout stability.

In plain words
What is it for?
Use it to review performance-sensitive changes, check frontend and backend targets, inspect traces or flame graphs after a confirmed problem, and run small performance benchmarks.
Why use it?
It identifies performance budget breaches and then investigates their causes, helping prevent slow pages, slow services, oversized bundles, and repeated database queries.

Agent

Part of the hatch3r plugin — 9 skills, 17 commands, 30 agents, 2 hooks shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/hatch3r/hatch3r/hatch3r-performance
Clone the repo
git clone --depth 1 https://github.com/hatch3r/hatch3r

Or install hatch3r, the plugin that ships this one along with the rest of its 9 skills, 17 commands, 30 agents, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for hatch3r-performance

README.md
[![agentmods](https://agentmods.dev/badge/agents/hatch3r/hatch3r/hatch3r-performance.svg)](https://agentmods.dev/agents/hatch3r/hatch3r/hatch3r-performance)
Your own site
<a href="https://agentmods.dev/agents/hatch3r/hatch3r/hatch3r-performance"><img src="https://agentmods.dev/badge/agents/hatch3r/hatch3r/hatch3r-performance.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,794 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00049 $0.04794
Opus 5 $0.00024 $0.02397
Sonnet 5 $0.00010 $0.00959
Haiku 4.5 $0.00005 $0.00479

Measured 4d ago against content hash fbd33af81771, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

hatch3r-performance scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

7. **JS bundle hygiene** — code-split per route (dynamic import on heavy/lazy modules), tree-shaking effective (no unused exports in initial chunk per bundle-analyzer treemap), brotli compression configured at the edge (
agents/hatch3r-performance.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Performance quality-vector specialist for hatch3r 2.0.0 — the CQ7 owner. Your remit is the measurable performance surface of generated end-user code: Core Web Vitals p75 budgets (frontend), p95/p99 latency targets (backend), bundle-size discipline, and N+1 query elimination on data-access paths.

Scope note (2.0.0): the pre-2.0.0 standalone perf-profiler deep-investigation role was retired and its scope absorbed into this agent per CONSTITUTION §6 Decision 22 (specialist consolidation; roles retired Cycle 10 F16.3-H1). hatch3r-performance runs both the CQ7 quality-vector gate (PR review, pre-write, pre-merge with pillar-aligned budgets — CWV + p95/p99 + bundle + N+1) AND the root-cause profiling work (read traces, capture flame graphs, run microbenchmarks) when a budget breach is detected. Stage as: gate first, then profile only on confirmed breach.

§0 Detect Ambiguity (P8 B1)

See agents/shared/quality-specialist-frame.md → §0 Detect Ambiguity (P8 B1). CQ7-specific ambiguity triggers:

  • Which page, route, or service is in scope (full app vs single feature)?
  • Which budget set applies (project-defined per rules/hatch3r-performance-budgets.md vs default Core Web Vitals "Good" thresholds)?
  • Frontend CWV gate, backend p95/p99 gate, or both?
  • Field RUM data (CrUX, web-vitals.js) or lab data (Lighthouse CI synthetic)? Field is authoritative for the CWV pass/fail decision per Google's CWV methodology; lab acceptable only when field data is unavailable.
  • Is brotli compression configured at the edge (changes the bundle-budget arithmetic vs gzip)?

Your Role

  • Validate Core Web Vitals p75 thresholds per page (LCP ≤2.5s, INP ≤200ms, CLS ≤0.1) using field RUM data first and Lighthouse CI as fallback.
  • Verify backend p95 ≤200ms and p99 ≤500ms per route via OpenTelemetry histogram aggregation against production telemetry or load-test output.
  • Check frontend bundle-size budgets per route (gzipped + brotli) using webpack-bundle-analyzer, rollup-plugin-visualizer, or next build output; fail builds exceeding the budget.
  • Audit data-access paths for N+1 query patterns via ORM query-log scanning or per-test query-count assertions; the target is 0 N+1 occurrences per cycle.
  • Confirm image optimization (WebP/AVIF + responsive srcset + loading="lazy"), code-splitting per route, tree-shaking, and Cache-Control header correctness.
  • Gate releases on the measurable CQ7 checklist below; do not pass a feature on developer-machine timing alone.

Read the full file on GitHub · 181 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 181 lines · 49 tokens per session scan A fbd33af81771

Subscribe to this mod's changes

hatch3r-performance is an agent published in the GitHub repository hatch3r/hatch3r (26 stars, last pushed 6d ago), licensed MIT. It adds 49 tokens to every session and 4,794 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other agents, from other repositories

Audit

Deep security + performance audit of a specific diff. Wraps /skill:security-hardening and /skill:performance-optimization (analysis phase only). Use when a change touches auth, untrusted input, secrets, webhooks, PII, or a latency/throughput budget — a focused, read-only risk pass that returns findings the parent…

BlackBeltTechnology/pi-agent-dashboard · 98 tokens

stock-partner-lead

Stock analysis roundtable orchestrator. When users ask about stocks, markets, portfolios, or investment decisions, create a team to orchestrate the 6 expert sub-agents for a roundtable discussion — do not answer alone.

zhouguoqing/QianYuan.AIAgenticFramework · 51 tokens

phase-1-strategy

Duration: 1-2 weeks for CATALYST-Full | 2-3 days for CATALYST-Sprint | Not typically used for CATALYST-Micro Agents Involved: 7 strategy specialists (Positioning Strategist, Messaging Architect, Campaign Coordinator, Budget Optimizer, Goals Strategist, Audience Segmentation Specialist, Channel Strategy Planner)…

shalintripathi/saas-marketing-agents · 0 tokens

MarTech Stack Strategist

Owns the marketing technology portfolio — capability-first tool selection, overlap and shadow-tool rationalization, build-vs-buy, and the true switching cost of replacing a system, including the suppression record, engagement history and measurement continuity that a platform migration puts at risk.

shalintripathi/saas-marketing-agents · 57 tokens

Financial Tracker

Marketing budget management, vendor management, and ROI reporting.

shalintripathi/saas-marketing-agents · 13 tokens

fintech-pm-reviewer

PM-side reviewer for fintech initiatives — money movement, lending, payments, insurance, neobank, BNPL. Stress-tests compliance scope, customer-money handling, fraud loss vs growth trade-off, KYC/AML readiness, jurisdiction strategy. Pairs with engineering's lending-credit-reviewer + pci-reviewer +…

VandanaAjayDubey111/great-pm · 76 tokens