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.
npx skills add mrlesmithjr/mcp --skill ynab-workflowgit clone --depth 1 https://github.com/mrlesmithjr/mcpWrote 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.
[](https://agentmods.dev/skills/mrlesmithjr/mcp/ynab-workflow)<a href="https://agentmods.dev/skills/mrlesmithjr/mcp/ynab-workflow"><img src="https://agentmods.dev/badge/skills/mrlesmithjr/mcp/ynab-workflow/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mrlesmithjr/mcp/ynab-workflow"><img src="https://agentmods.dev/badge/skills/mrlesmithjr/mcp/ynab-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00117 | $0.01867 |
| Opus 5.5 | $0.00047 | $0.00747 |
| Sonnet 5.5 | $0.00023 | $0.00373 |
| Haiku 4.5 | $0.00012 | $0.00187 |
Grade A, and why
ynab-workflow 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
YNAB Budget Workflow
This skill provides context for working with the user's YNAB budget via the ynab-tools MCP server.
Available MCP Tools
The ynab-tools MCP server exposes 47 tools. Always call sync_data first if data might be stale.
Data Sync
sync_data(full?, months?)- Sync from YNAB API. Delta sync by default (fast). Usefull=truefor complete refresh.sync_status()- Check data freshness without syncing.
Reports & Analysis
budget_check(month?, overspend_plan?)- RTA, overspent, near-limit, underfunded categories, health ratios. Supports historical months and overspend classification.monthly_summary(months?)- Income vs spending vs net per month. Shows surplus/deficit status.month_end_report(month?)- Consolidated closeout: income, spending, overspent, pending, surplus, planned. Auto-detects closing month.spending_report(months?, breakdown?)- Spending vs budget by category. Multi-month comparison. Fixed/discretionary breakdown.category_trend(category, months?)- 6-month spending trend for a category.income_report(months?)- Regular pay, bonuses, other income, YTD.paycheck_forecast(months?)- Paycheck income projections.debt_status()- Debt balances, payments, payoff estimates.net_worth(history?)- Net worth snapshot or trend.sinking_funds()- Goal status grouped by funding state.large_expenses(threshold?, months?)- Large expenses grouped by month.recent_transactions(n?, account?, payee?, category?, memo?, uncleared?, month?)- Last N transactions with filters. Supports uncleared and month scoping.transfers(days?)- Recent account transfers.category_balance(category)- Look up any category balance.funding_status()- Target vs average spend vs recommendation per category.planned_expenses()- Active planned expenses with funding gaps.
Budget Actions
fund_category(category, amount)- Set or adjust a category budget. Use+100or-50for relative changes.fund_goals_preview()- Dry-run: show whatfund_goals_applywould do.fund_goals_apply()- Fund all underfunded goal categories.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 140 lines · 117 tokens per session scan A 37bbc33f20b7
ynab-workflow is a skill published in the GitHub repository mrlesmithjr/mcp (0 stars, last pushed 2d ago), licensed MIT. It adds 117 tokens to every session and 1,867 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-08-31.
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