Agent skill

Perf Architect

by ozontech in ozontech/seq-db

Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan.

Apache-2.0Auto-check passedBusiness, Finance & HR

Install Perf Architect

skills CLI
$ npx skills add ozontech/seq-db --skill perf-architect -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install ozontech/seq-db perf-architect --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/ozontech/seq-db.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/perf-architect .claude/skills/perf-architect && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
perf-architect
GitHub stars
133
Token cost
~581 tokens
SKILL.md length
254 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
Apache-2.0

At a glance

Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan.

  • Works in 5 steps: Scope the target from the user's… → Point at evidence if it exists. If there… → Spawn the perf-architector subagent… → …
  • You want design-level performance ideas
  • SKILL.md covers Steps and Notes
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Perf Architect is an agent skill from ozontech/seq-db. Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan. Delegates to the perf-architector subagent (top-down design lens) and relays ranked proposals. Use when you want design-level performance ideas or to rethink an approach (e.g. "rethink the search path", "is the postings representation right?"). This proposes; it does not implement.

Its SKILL.md is about 580 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Business, Finance & HR, covering Proposals and quotes, Subagents and Performance reviews. The repository describes itself as: seq-db is a scalable and high-performance database designed for storing and querying logs efficiently. The licence is Apache-2.0.

When your agent uses it

  • You want design-level performance ideas
  • Rethink an approach (e.g

Example prompts

  • “rethink the search path”
  • “is the postings representation right?”
  • “/perf-architect”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Scope the target from the user's request: a subsystem, a query/scenario
  2. Point at evidence if it exists. If there are recent runs under .perf-loop/
  3. Spawn the perf-architector subagent (Agent tool, `subagent_type
  4. Relay the ranked design proposals — current-design summary, then each
  5. Do not implement. These are hypotheses. After presenting, offer to

What it can do on your machine

Read from SKILL.md and the folder at commit 70af159. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Perf Architect loads about 581 tokens when it runs. Until then it costs about 121 tokens; SKILL.md has 254 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~121
When it runs · the whole SKILL.md, loaded when a task matches
~581

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from ozontech/seq-db at commit 70af159, republished under its Apache-2.0 licence (© ozontech). 254 words, ~581 tokens.

Download SKILL.mdSave it as .claude/skills/perf-architect/SKILL.md (or your agent's skills folder).
name
perf-architect
description
Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan. Delegates to the perf-architector subagent (top-down design lens) and relays ranked proposals. Use when you want design-level performance ideas or to rethink an approach (e.g. "rethink the search path", "is the postings representation right?"). This proposes; it does not implement.

perf-architect

A deliberate, top-down design review. Use it when the question is "is there a fundamentally better design for this hot path?" — a better data structure, algorithm, layout, or execution strategy for the workload.

Delegate the heavy reading (subsystem + architecture docs + profiles) to the perf-architector subagent so it stays out of this context; you scope and relay.

Steps

  1. Scope the target from the user's request: a subsystem, a query/scenario type, or a path (e.g. "the regular-search read path"). If they didn't name one, ask — design review needs a concrete target.
  2. Point at evidence if it exists. If there are recent runs under .perf-loop/ (profiles, baseline numbers), pass those paths so the subagent can see where cost concentrates. If not, it proceeds from code + architecture docs + the documented workload/data characteristics — that's fine.
  3. Spawn the perf-architector subagent (Agent tool, subagent_type: "perf-architector") with the target, the workload being optimized for, and any evidence paths. One agent; fan out only for genuinely independent subsystems.
  4. Relay the ranked design proposals — current-design summary, then each proposal with its why/impact/risk/validation. Keep your own commentary minimal.
  5. Do not implement. These are hypotheses. After presenting, offer to prototype a chosen one — that goes through the normal edit → build → benchmark flow (and can reuse the perf-loop observability stack to measure), NOT the autonomous micro-loop, since architectural changes need a real prototype and wider validation.

Notes

  • If the subagent concludes the current design is already appropriate, report that as the result; a "no rewrite needed" answer is valid and valuable.

© ozontech, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/perf-architect of ozontech/seq-db.

Open the folder on GitHubat commit 70af159

Compare with similar skills

Perf Architect next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Perf Architect compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Perf Architect this skillozontech/seq-db133—~581Automated safety check: PassApache-2.0
Paw Pa Pricingpawbytes/skill-suites110—~1.5kAutomated safety check: PassMIT
Cross Critiquewarpdotdev/common-skills608—~1.4kAutomated safety check: PassMIT
Email Composerthatrebeccarae/claude-marketing162—~992Automated safety check: PassMIT
Education Cloud Student Recruitment Agent Configureforcedotcom/sf-skills1.1k—~5.4kAutomated safety check: PassApache-2.0
Cc Sdd New Agentgotalab/cc-sdd3.7k—~1.1kAutomated safety check: PassMIT

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Questions about Perf Architect

What does Perf Architect do?

Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan. Perf Architect is an agent skill from ozontech/seq-db. Design-level performance review for seq-db — proposes data-structure, algorithmic, memory-layout, and architectural alternatives for a hot path, each with reasoning and a validation plan.

When should I use Perf Architect?

Perf Architect fits situations like: you want design-level performance ideas; rethink an approach (e.g.

How do I install Perf Architect in Claude Code?

Run `npx skills add ozontech/seq-db --skill perf-architect -a claude-code`. Or copy the skill folder (.claude/skills/perf-architect in ozontech/seq-db) into .claude/skills/perf-architect in your project. Claude Code loads it when a task matches its description.

How do I install Perf Architect in Codex?

Run `npx skills add ozontech/seq-db --skill perf-architect -a codex`. Or copy the skill folder (.claude/skills/perf-architect in ozontech/seq-db) into .agents/skills/perf-architect in your project. Codex loads it when a task matches its description.

Can I use Perf Architect in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ozontech/seq-db --skill perf-architect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/perf-architect, .gemini/skills/perf-architect, .github/skills/perf-architect and .opencode/skills/perf-architect in your project.

What does Perf Architect need to run?

SKILL.md names no scripts, command-line tools or credentials: Perf Architect is instructions for the agent only.

Does Perf Architect access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Perf Architect safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Perf Architect use?

Perf Architect is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Perf Architect use?

About 581 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Perf Architect?

Skills that share tags, products or a category with Perf Architect: Paw Pa Pricing (pawbytes/skill-suites, 110 stars), Cross Critique (warpdotdev/common-skills, 608 stars), Email Composer (thatrebeccarae/claude-marketing, 162 stars) and Education Cloud Student Recruitment Agent Configure (forcedotcom/sf-skills, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Perf Architect?

ozontech (a GitHub organization) maintains it in ozontech/seq-db, which has 133 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 7, 2026.

Source: ozontech/seq-db on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.