Model Cost Compare
mergisi/awesome-openclaw-agents
Trigger when the user asks which model to use, wants to compare model costs, says "what's cheapest for this task", "should I use Opus or Sonnet", "can a smaller model handle this", or…
Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly…
MITAuto-check passed
Install Car Tco
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitagw15856/pm-claude-skills car-tco --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/car-tco .claude/skills/car-tco && rm -rf skills-srcUse ~/.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/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .claude/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tcoType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitagw15856/pm-claude-skills car-tco --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/car-tco .agents/skills/car-tco && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .agents/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitagw15856/pm-claude-skills car-tco --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/car-tco .cursor/skills/car-tco && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .cursor/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mohitagw15856/pm-claude-skills.git --path skills/car-tco--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitagw15856/pm-claude-skills car-tco --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/car-tco .gemini/skills/car-tco && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .gemini/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mohitagw15856/pm-claude-skills car-tcoInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/car-tco .github/skills/car-tco && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .github/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitagw15856/pm-claude-skills car-tco --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/car-tco .opencode/skills/car-tco && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "car-tco" agent skill from https://github.com/mohitagw15856/pm-claude-skills/tree/main/skills/car-tco into .opencode/skills/car-tco/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "car-tco", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
car-tco- GitHub stars
- 1.4k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 551 words
- Files
- 3 (incl. scripts, references)
- Skills in repo
- 1,348
- Repo updated
- First seen
- Licence
- MIT
At a glance
Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly…
- Asked should I lease
- SKILL.md covers What This Skill Produces, Required Inputs, Programmatic Helper and Framework: The Payment…, plus 7 more sections
- Runs Python scripts from its folder; calls python3
- Is it cheaper to keep my old car
What it does
Car Tco is an agent skill from mohitagw15856/pm-claude-skills. Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly payment. Use when asked should I lease or buy a car, is it cheaper to keep my old car, what does this car really cost per month, or new vs used total cost. Produces the ranked scenario totals, per-month true cost, the assumption ledger, and the not-modeled list.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts and reference files (for example `references/worked-example.md` and `scripts/car_tco.py`).
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 should I lease
- Is it cheaper to keep my old car
- What does this car really cost per month
- New vs used total cost
Example prompts
- “/car-tco”
Requirements
- Python 3
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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Car Tco loads about 1.1k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 116 tokens; SKILL.md has 551 words of instructions outside code blocks.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 551 words, ~1,127 tokens.
Download SKILL.mdSave it as
.claude/skills/car-tco/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- car-tco
- description
- Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly payment. Use when asked should I lease or buy a car, is it cheaper to keep my old car, what does this car really cost per month, or new vs used total cost. Produces the ranked scenario totals, per-month true cost, the assumption ledger, and the not-modeled list.
Car TCO Skill
Cars are sold on monthly payments and owned on total cost — and the two rank options differently. Depreciation (the biggest cost of a new car) never appears on a statement; maintenance (the biggest fear about an old car) is usually smaller than a year of new-car depreciation. This skill compares buy-new, buy-used, lease-forever, and keep-current on the same total-cost basis over the same horizon.
What This Skill Produces
- Ranked scenario totals — every requested scenario over the same horizon, cheapest first
- True per-month cost — total ÷ months, the number to compare against the payment the dealer quotes
- The assumption ledger — depreciation curve, maintenance ramp, insurance deltas, all labeled
- The not-modeled list — financing interest, jurisdiction taxes, reliability luck
Required Inputs
Ask for these if not provided:
- Which scenarios to compare — any of: new price, used-equivalent price, lease terms, current car's value + annual maintenance
- Horizon — years they realistically keep cars (default 8, labeled); short horizons flatter leasing, long ones flatter buying
- Miles per year and rough fuel/energy cost (defaults 12,000 mi / $0.14 per mile, labeled)
Programmatic Helper
python3 scripts/car_tco.py --new-price 38000 --used-price 24000 --lease-month 420 --keep-value 9000
python3 scripts/car_tco.py --new-price 38000 --keep-value 9000 --keep-maint 1800 --horizon 6 --jsonDeterministic. Depreciation: 20% year one then 10%/yr for new, gentler for used/current. Maintenance ramps 8%/yr (used cars start further up the ramp). Leases re-lease at each term end with a fresh drive-off. Resale value is credited back — TCO is what you spent minus what you can recover.
Framework: The Payment Illusion Rules
- Depreciation is the invisible line item — a new car's largest cost has no bill; it's the resale-value credit shrinking
- "My old car needs $2,000 of work" is usually cheap — compare the repair to a year of the replacement's depreciation before calling it "not worth fixing"
- Leasing buys flexibility, not savings — lease-forever means paying peak depreciation years forever; price that honestly and let people buy flexibility knowingly
- Margins under ~10% are noise — the model's assumptions can't resolve differences that small; say "roughly a tie," not a winner
- The horizon drives the ranking — always name it; the same inputs rank differently at 3 years vs 10
Show full SKILL.md (219 more words)Show less
Output Format
Car TCO: [scenarios] over [N] years
The Ranking
[Script output: totals cheapest-first, per-month true cost]
Reading the Ranking
[Two sentences: how far apart the options really are, and which assumption could flip the order.]
What This Model Ignores
Financing interest (run the loan separately) · taxes and fees by jurisdiction · reliability variance (a lemon breaks any model) · the non-financials (safety features, the want).
Educational model, not financial advice — verify with a licensed professional before acting on it.
Quality Checks
- All scenarios use the same horizon and mileage
- Resale value is credited back in every ownership scenario
- Per-month true cost appears next to the totals
- Sub-10% margins are called ties, not winners
- The disclaimer line appears in the artifact
Anti-Patterns
- Do not rank on monthly payment — that's the illusion this skill exists to correct
- Do not omit depreciation or resale from ownership scenarios
- Do not treat maintenance fears as data — use the ramp, and compare repairs to replacement depreciation
- Do not extrapolate one scenario's horizon onto another (a 3-year lease vs 8-year ownership is not a comparison)
- Do not moralize the want — price the options honestly and let the user choose with open eyes
Example Trigger Phrases
- "Should I lease?"
- "Buy a car."
- "Is it cheaper to keep my old car?"
- "What does this car really cost per month?"
© 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
SKILL.md and 2 other files (scripts, references) in skills/car-tco of mohitagw15856/pm-claude-skills.
- SKILL.md
- references/worked-example.md
- scripts/car_tco.py
Open the folder on GitHubat commit 1cbf1f0
Compare with similar skills
Car Tco 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Car Tco this skillmohitagw15856/pm-claude-skills | 1.4k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Model Cost Comparemergisi/awesome-openclaw-agents | 4k | — | ~1k | Automated safety check: Pass | MIT | |
| Cost Conversationruvnet/ruflo | 74k | — | ~407 | Automated safety check: Notes | MIT | |
| Model Cost Comparenyldn/claude-octopus | 4.2k | 1 repos | ~718 | Automated safety check: Pass | MIT | |
| Cost Trackingaffaan-m/ECC | 277k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Cost Summaryruvnet/ruflo | 74k | — | ~594 | Automated safety check: Notes | MIT |
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Questions about Car Tco
What does Car Tco do?
Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly…. Car Tco is an agent skill from mohitagw15856/pm-claude-skills. Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly payment.
When should I use Car Tco?
Car Tco fits situations like: asked should I lease; is it cheaper to keep my old car; what does this car really cost per month; new vs used total cost.
How do I install Car Tco in Claude Code?
Run `npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a claude-code`. Or copy the skill folder (skills/car-tco in mohitagw15856/pm-claude-skills) into .claude/skills/car-tco in your project. Claude Code loads it when a task matches its description.
How do I install Car Tco in Codex?
Run `npx skills add mohitagw15856/pm-claude-skills --skill car-tco -a codex`. Or copy the skill folder (skills/car-tco in mohitagw15856/pm-claude-skills) into .agents/skills/car-tco in your project. Codex loads it when a task matches its description.
Can I use Car Tco 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 car-tco -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/car-tco, .gemini/skills/car-tco, .github/skills/car-tco and .opencode/skills/car-tco in your project.
What does Car Tco need to run?
Going by SKILL.md and its folder, Car Tco needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Car Tco 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 Car Tco 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Car Tco use?
Car Tco 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 Car Tco use?
About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.1k tokens, read only when the agent opens those files.
What are the alternatives to Car Tco?
Skills that share tags, products or a category with Car Tco: Model Cost Compare (mergisi/awesome-openclaw-agents, 4k stars), Cost Conversation (ruvnet/ruflo, 74k stars), Model Cost Compare (nyldn/claude-octopus, 4.2k stars) and Cost Tracking (affaan-m/ECC, 277k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Car Tco?
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.