Herramientas

Methodology reference for US SOX 404 internal control audits: scoping significant accounts, sampling methods, workpaper and evidence standards, and classifying deficiencies, significant deficiencies and material weaknesses. Not audit or legal advice; needs professional review. By Anthropic.

Finance and accounting plugin: prepares journal entries, reconciles accounts, generates income statements, runs variance analysis, manages month-end close and supports SOX audit testing. Can pull data from ERPs and data warehouses. Official from Anthropic.

Month-end reconciliation for small businesses: matches QuickBooks or Xero line by line against PayPal, Stripe and Shopify payouts, flags likely duplicates and missing receipts, explains the P&L in plain terms and exports a close package (Excel and PDF). CSVs work too. Official from Anthropic.

Breaks budget-versus-actual, year-over-year and month-over-month variances into volume, price and mix drivers, filters by materiality thresholds, writes variance commentary and provides waterfall breakdowns for monthly business reviews. From Anthropic's official finance plugin.

Everyday software engineering plugin: standup summaries, code review, structured debugging, architecture decision records, incident response and pre-deploy checks. Official from Anthropic, built mainly for Cowork but also usable in Claude Code.

Account reconciliation following accounting methodology: GL to subledger, bank reconciliations and intercompany balances, with reconciling items categorized, aged and escalated. Part of Anthropic's official finance plugin; results need professional review.

Reorder planning for small merchants: reads sales and stock from Shopify, Square, NetSuite or CSV, projects stockout dates from 7- and 28-day velocity, sizes reorders from 60-day usage plus lead time, drafts POs and supplier emails, and flags dead stock. Nothing is sent unapproved. By Anthropic.

Helps finance teams run month-end close: a close checklist sequenced from T+1 to T+5, task dependencies and critical path, a progress tracker and tips to shorten the close, useful for close calendars and status tracking. Needs professional review. Part of Anthropic's official finance plugin.

Compensation analysis for HR and managers: market pay percentiles by role, level and location, offer competitiveness checks and equity modeling; upload a pay sheet to find employees outside their band and flight risks. Without a comp data source it uses public web data, so verify. By Anthropic.

Tax prep for US small business owners: estimates quarterly taxes from QuickBooks, Xero or an uploaded P&L, and at year end lists contractors paid over $600 for 1099-NEC, flagging missing W-9s, for your accountant. US federal only; books must be closed. Not tax advice. From Anthropic.

Adds a searchable, copyable text layer to scanned PDFs, with automatic deskew, rotation and size optimization, outputting PDF/A by default. Built on Tesseract, supports 100+ languages and runs fully locally.

30/60/90-day cash flow forecasts for small businesses: reads receivables, payables and collections from your accounting system, PayPal or Stripe (or an uploaded CSV), gives a forecast with ranges and risk flags, and exports to Excel. Have an accountant review. Official from Anthropic.

Produces monthly, quarterly or annual income statements with prior-period, year-over-year and budget comparisons, flagging material variances. Includes balance sheet and cash flow formats plus GAAP presentation and period-end adjustment references. From Anthropic's finance plugin; get it reviewed.

Helps small business owners collect overdue payments: finds overdue invoices in QuickBooks, Xero, PayPal or Stripe and drafts reminder emails with a tone suited to each customer's payment history, sent only after your approval. Without a connection, upload an AR aging CSV. By Anthropic.

Helps accountants prepare month-end journal entries: debit/credit treatment for accruals, prepaid amortization, depreciation, payroll and revenue recognition, plus required support and review checklists, following US GAAP. Not financial advice; review before posting. From Anthropic's finance plugin.

For internal auditors running SOX tests: lists key controls by area (revenue, procure-to-pay, payroll, close, ITGC) and period, sets sample sizes, samples from your population, and generates test workpaper templates and deficiency assessments. Needs professional review. Official from Anthropic.

Calls Codex from Claude Code for read-only or adversarial code reviews, or delegates tasks to Codex to run in the background. Maintained by OpenAI; needs a ChatGPT account (the free tier works) or an API key.

Vercel's official cost and performance skill: gathers production metrics, usage and project config, investigates only the routes and files the metrics point to, and returns ranked, doc-backed recommendations. Supports Next.js, SvelteKit and Nuxt; needs Vercel CLI v53+ logged in and linked.

Runs commands and scripts in a sandbox, indexes large tool outputs for full-text search and returns only results to the context window to save tokens; after compaction it can retrieve edits and task state. Supports Claude Code, Codex and more. Needs Node.js 22.5+.

Vercel's official deployment skill: checks the git remote, project link and CLI login, then deploys a preview (default) or production via git push or vercel deploy. When login isn't possible in a sandbox, it can create a claimable preview link.

React and Next.js performance rules from Vercel's engineering team: 70 rules ranked by impact covering request waterfalls, bundle size, server performance and re-renders, for writing, reviewing and refactoring. Maintained by Vercel.

Vercel's official skill that pulls the 80+ rules of Vercel's writing handbook online to review docs and copy for voice, structure, content types, code examples and formatting, listing issues as file:line.

Vercel's guide to React composition patterns: replaces boolean prop sprawl with compound components, lifted state and clean Context interfaces, including React 19 API changes. Useful for refactoring component libraries and reviewing component architecture.

Processes large tool outputs in a sandbox and returns only the results to context; logs session events in SQLite with FTS5 so work continues after context compaction. Supports Claude Code, Codex and a dozen other clients. ELv2 licensed.