Agent skill

Bom Cost Review

by mohitagw15856 in mohitagw15856/pm-claude-skills

Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics…

MITAuto-check passed

Install Bom Cost Review

skills CLI
$ npx skills add mohitagw15856/pm-claude-skills --skill bom-cost-review -a claude-code

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

GitHub CLI
$ gh skill install mohitagw15856/pm-claude-skills bom-cost-review --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/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/bom-cost-review .claude/skills/bom-cost-review && 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
bom-cost-review
GitHub stars
1.4k
Token cost
~1.3k tokens
SKILL.md length
641 words
Files
1
Skills in repo
1,348
Repo updated
First seen
Licence
MIT

At a glance

Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics…

  • Works in 7 steps: Summary — total BOM cost vs target, gap,… → Cost rollup — table by commodity class… → Top-10 cost drivers — table: part, qty,… → …
  • Asked to review a BOM
  • SKILL.md covers What This Skill Produces, Required Inputs, Review Framework and Output Format, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Bom Cost Review is an agent skill from mohitagw15856/pm-claude-skills. Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics sensitivity. Use when asked to review a BOM, find cost-down opportunities, check component sourcing risk, or sanity-check BOM cost against target. Produces a structured BOM review with a cost driver Pareto, risk flags per line, and a prioritised cost-down list.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.

When your agent uses it

  • Asked to review a BOM
  • Find cost-down opportunities
  • Check component sourcing risk
  • Sanity-check BOM cost against target

Example prompts

  • “/bom-cost-review”

Workflow steps

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

  1. Summary — total BOM cost vs target, gap, one-line verdict
  2. Cost rollup — table by commodity class (cost, % of total)
  3. Top-10 cost drivers — table: part, qty, unit cost, extended cost, % of BOM, flags
  4. Risk register — every 🔴/🟠 line with flag, evidence, and recommended action + owner
  5. Cost-down candidates — ranked table: lever, est. saving/unit, effort, cut-in point, confidence
  6. Tariff/logistics sensitivity — exposure summary and scenarios
  7. Data gaps — lines missing cost, lifecycle, or sourcing data [missing — request]

What it can do on your machine

Read from SKILL.md and the folder at commit 1cbf1f0. 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

Bom Cost Review loads about 1.3k tokens when it runs. Until then it costs about 118 tokens; SKILL.md has 641 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~118
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

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 mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 641 words, ~1,273 tokens.

Download SKILL.mdSave it as .claude/skills/bom-cost-review/SKILL.md (or your agent's skills folder).
name
bom-cost-review
description
Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics sensitivity. Use when asked to review a BOM, find cost-down opportunities, check component sourcing risk, or sanity-check BOM cost against target. Produces a structured BOM review with a cost driver Pareto, risk flags per line, and a prioritised cost-down list.

BOM Cost Review Skill

A BOM is a list of promises: that each part will be buyable, at that price, at your volume, for the life of the product. This skill reviews a BOM the way a sourcing veteran does — Pareto the cost, flag the single-source and end-of-life traps before they become line-down events, and separate real cost-down candidates from wishful thinking.

What This Skill Produces

  • A cost rollup by commodity class with % of total
  • Top-10 cost drivers (they usually carry 70–80% of BOM cost)
  • Risk flags per line: single-source, lifecycle (EOL/NRND), MOQ mismatch, long lead time
  • A prioritised cost-down candidate list with realistic savings and effort
  • Tariff and logistics sensitivity notes

Required Inputs

Ask for these if not provided; work with a partial BOM if that's all there is, labelling gaps [missing — request from EE/sourcing]:

  • The BOM — part numbers, descriptions, quantities, unit costs (any format; structure it)
  • Annual forecast volume — needed for MOQ math and price-break realism
  • Target BOM cost — what "good" looks like
  • Sourcing detail if available — approved vendors, country of origin, lead times, lifecycle status
  • Product stage — EVT-stage BOMs get design-out suggestions; MP-stage BOMs get negotiation/resourcing ones

Review Framework

1. Rollup. Group into commodity classes (PCBA/semiconductors, passives, display, battery, mechanicals/enclosure, cables & connectors, packaging & accessories). Show cost and % per class, and total vs target with the gap.

2. Pareto. Rank the top-10 lines by extended cost (unit × qty). Everything after these is noise until the big ten are handled.

3. Risk flags — apply per line, worst flag wins:

FlagTriggerWhy it matters
🔴 Single-sourceOne qualified vendor, no drop-in alternateOne factory fire from line-down
🔴 EOL / ObsoleteLifecycle status EOL or last-time-buy announcedForced redesign or LTB cash outlay
🟠 NRNDNot recommended for new designFine now, redesign within product life
🟠 MOQ mismatchMOQ > ~13 weeks of forecast demandCash tied up, scrap risk on ECO
🟠 Long leadLead time > 16 weeksForecast error becomes shortage
🟡 Custom/tooled partCustom silicon, tooled mechanicalSwitching cost locks the vendor in

4. Cost-down candidates. For each: the lever (negotiate at volume break / second-source and dual-run / value-engineer spec — e.g. tighter-than-needed tolerance, over-spec'd connector / design-out entirely), estimated saving per unit, effort, and earliest cut-in (which build or ECO).

5. Tariff & logistics sensitivity. Note country of origin concentration, HTS-code exposure for high-value lines, and what a duty change or freight spike does to landed cost.

Show full SKILL.md (250 more words)Show less

Output Format

BOM review: [product / revision]
  1. Summary — total BOM cost vs target, gap, one-line verdict
  2. Cost rollup — table by commodity class (cost, % of total)
  3. Top-10 cost drivers — table: part, qty, unit cost, extended cost, % of BOM, flags
  4. Risk register — every 🔴/🟠 line with flag, evidence, and recommended action + owner
  5. Cost-down candidates — ranked table: lever, est. saving/unit, effort, cut-in point, confidence
  6. Tariff/logistics sensitivity — exposure summary and scenarios
  7. Data gaps — lines missing cost, lifecycle, or sourcing data [missing — request]

Quality Checks

  • Rollup total reconciles with the sum of lines — no silent arithmetic drift
  • Every top-10 line has a lifecycle and sourcing note, even if [missing — request]
  • Each cost-down candidate names the lever, the saving, and the cut-in build/ECO
  • MOQ flags are computed against the stated forecast, not gut feel
  • Single-source flags distinguish "no alternate exists" from "alternate not yet qualified"

Anti-Patterns

  • Do not quote unit prices without a volume — a price without its quantity break is fiction
  • Do not chase pennies on passives while a top-10 line is single-sourced and EOL
  • Do not claim a cost-down saving without naming the lever and who has to act
  • Do not treat distributor stock as supply security for a single-source part
  • Do not ignore custom/tooled parts in risk review — they are the hardest to move
  • Do not fabricate costs for missing lines — label them and carry the uncertainty into the total

Example Trigger Phrases

  • "Review a BOM."
  • "Find cost-down opportunities."
  • "Check component sourcing risk."
  • "Sanity-check BOM cost against target."

© mohitagw15856, MIT. 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 skills/bom-cost-review of mohitagw15856/pm-claude-skills.

Open the folder on GitHubat commit 1cbf1f0

Compare with similar skills

Bom Cost Review 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.

Bom Cost Review compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Bom Cost Review this skillmohitagw15856/pm-claude-skills1.4k—~1.3kAutomated safety check: PassMIT
Supply Chain Risk Auditortrailofbits/skills7.5k—~1.7kAutomated safety check: NotesCC-BY-SA-4.0
Cost Trackingaffaan-m/ECC277k1 repos~1.3kAutomated safety check: PassMIT
Cost Conversationruvnet/ruflo74k—~407Automated safety check: NotesMIT
Cost Reportruvnet/ruflo74k—~830Automated safety check: NotesMIT
AWS Billing And Cost Managementaws/agent-toolkit-for-aws2.8k—~2.3kAutomated safety check: PassApache-2.0

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Questions about Bom Cost Review

What does Bom Cost Review do?

Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics…. Bom Cost Review is an agent skill from mohitagw15856/pm-claude-skills. Review a bill of materials for cost, risk, and supply exposure — cost rollup, top-10 cost drivers, single-source and EOL risk, MOQ vs forecast mismatch, cost-down candidates, and tariff/logistics sensitivity.

When should I use Bom Cost Review?

Bom Cost Review fits situations like: asked to review a BOM; find cost-down opportunities; check component sourcing risk; sanity-check BOM cost against target.

How do I install Bom Cost Review in Claude Code?

Run `npx skills add mohitagw15856/pm-claude-skills --skill bom-cost-review -a claude-code`. Or copy the skill folder (skills/bom-cost-review in mohitagw15856/pm-claude-skills) into .claude/skills/bom-cost-review in your project. Claude Code loads it when a task matches its description.

How do I install Bom Cost Review in Codex?

Run `npx skills add mohitagw15856/pm-claude-skills --skill bom-cost-review -a codex`. Or copy the skill folder (skills/bom-cost-review in mohitagw15856/pm-claude-skills) into .agents/skills/bom-cost-review in your project. Codex loads it when a task matches its description.

Can I use Bom Cost Review 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 mohitagw15856/pm-claude-skills --skill bom-cost-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/bom-cost-review, .gemini/skills/bom-cost-review, .github/skills/bom-cost-review and .opencode/skills/bom-cost-review in your project.

What does Bom Cost Review need to run?

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

Does Bom Cost Review 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 Bom Cost Review 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 Bom Cost Review use?

Bom Cost Review is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Bom Cost Review use?

About 1.3k tokens (SKILL.md is roughly 5.1k 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 Bom Cost Review?

Skills that share tags, products or a category with Bom Cost Review: Supply Chain Risk Auditor (trailofbits/skills, 7.5k stars), Cost Tracking (affaan-m/ECC, 277k stars), Cost Conversation (ruvnet/ruflo, 74k stars) and Cost Report (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Bom Cost Review?

mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.

Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.