seller-copilot

seller-copilot is a skill for Claude Code, Codex from joomcode/joompulse-skills. It costs 230 tokens per session (5,048 once invoked), scanned A, original, MIT.

A consultant workflow for sellers on Mercado Livre and Shopee Brasil, two online marketplaces in Brazil.

In plain words
What is it for?
Use it to study fees and profit margins, set prices, assess products, check suppliers, compare competitors, diagnose listings, plan imports, and find seasonal or assortment opportunities.
Why use it?
It turns broad store questions into the appropriate analysis and keeps marketplace data from being applied to the wrong platform.

Skill for Claude CodeCodex

Part of the joompulse-skills plugin — 18 skills, 1 MCP server 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 skills/joomcode/joompulse-skills/seller-copilot
Any agent
npx skills add joomcode/joompulse-skills --skill seller-copilot
Clone the repo
git clone --depth 1 https://github.com/joomcode/joompulse-skills

Made for: Claude Code, Codex.

Or install joompulse-skills, the plugin that ships this one along with the rest of its 18 skills, 1 MCP server.

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 seller-copilot

README.md
[![agentmods](https://agentmods.dev/badge/skills/joomcode/joompulse-skills/seller-copilot.svg)](https://agentmods.dev/skills/joomcode/joompulse-skills/seller-copilot)
Your own site
<a href="https://agentmods.dev/skills/joomcode/joompulse-skills/seller-copilot"><img src="https://agentmods.dev/badge/skills/joomcode/joompulse-skills/seller-copilot.svg" alt="Measured on agentmods" height="20"></a>
Per session 230 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,048 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00230 $0.05048
Opus 5 $0.00115 $0.02524
Sonnet 5 $0.00046 $0.01010
Haiku 4.5 $0.00023 $0.00505

Measured 4d ago against content hash c86163492d6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

seller-copilot scanned grade A with 0 findings 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/seller-copilot/SKILL.md · 364 lines

How it starts

The opening of the file, as written. The whole thing — 364 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Seller Copilot

This skill is the consultant front door for sellers working with JoomPulse data, on both marketplaces it covers — Mercado Livre (Brasil) and Shopee Brasil. It handles two kinds of request that a single focused skill does not:

  1. Vague or compound questions — "help me grow my store", "por onde começo", "analisa minha operação" — where the seller does not yet know which analysis they need.
  2. Deeper analyses not covered by another skill in this repo — real margin and fee breakdowns, pricing strategy, product validation, supplier vetting, import-vs-domestic, listing diagnosis, competitor benchmarking, assortment gaps, market structure, and seasonality.

It works by classifying the request, asking at most one or two clarifying questions, running the relevant analysis procedures documented in references/, and returning one consolidated, verdict-first answer.

When to use another skill instead

Only for Mercado Livre. Every focused skill in this repo is Mercado Livre only, so handing a Shopee question to one returns Mercado Livre data to a Shopee seller — a wrong answer that looks right. For Shopee there is nothing to defer to: do the analysis here, from the references/shopee-* files.

For a Mercado Livre request that maps cleanly onto a single focused skill, use that skill — it is faster and more direct. In particular:

  • One category's opportunity snapshot → category-opportunity-index
  • Ranking sellers in a category → top-sellers-in-category
  • Tracking one seller over time → seller-overview-tracker
  • Trending search terms → top-keywords-in-my-category
  • One product and its competitors → ml-product-analysis
  • Buy-box comparison for one listing → my-product-vs-catalog
  • Matching a reference item to the same real-world product → pulse-find-exact-same-product
  • Period-over-period change → category-monitor, product-change-monitor, top-brand-position-tracker

Use this skill when the question is broader than one of those, spans several of them, or needs one of the deeper analyses listed in references/.

Read the full file on GitHub · 364 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 · 364 lines · 230 tokens per session scan A c86163492d6a

Subscribe to this mod's changes

seller-copilot is a skill published in the GitHub repository joomcode/joompulse-skills (50 stars, last pushed 14d ago), licensed MIT. It adds 230 tokens to every session and 5,048 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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