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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.

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.

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.

Anthropic's official knowledge work plugin: one question searches your connected chat, email, cloud docs, wiki and project tools at once and returns a sourced answer; can also produce daily or weekly digests. Preset MCP connectors for Slack, Notion, Atlassian, Asana and more, each needing auth.

Support for small merchants: reads customer emails, checks orders and refunds in Stripe, PayPal, Square or Shopify, and drafts replies in the owner's voice per your refund policy; can refund via Stripe or Square after explicit approval. Works with pasted emails too. Official from Anthropic.

Anthropic's official knowledge work plugin: manages tasks in TASKS.md, remembers colleagues, projects and internal jargon with two-tier memory, and generates a local dashboard. Can sync to-dos with calendar, email and chat tools.

Competitive analysis skill from Anthropic's official marketing plugin: researches competitor websites, pricing, recent news and content strategy, compares positioning and messaging, and lists content gaps, opportunities and threats; can also produce sales battlecards. Needs web search.

Drafts offer letters from role, level, location and comp package, listing base salary, equity, signing bonus and first-year total, plus talking points for the hiring manager's negotiation. The template follows US company conventions; have legal review before sending. Official from Anthropic.

Helps in-house legal score and rank risks in contracts, deals and disputes on a severity-by-likelihood matrix, write risk memos, and know when to escalate to senior or outside counsel. No other tools needed. From Anthropic's legal plugin; not legal advice, have a lawyer review.

Quickly pre-screens incoming NDAs and sorts them green, yellow or red into standard approval, legal review or full review, focusing on non-competes, non-solicitation and missing carve-outs. Part of Anthropic's official legal 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.

Apollo.io's official plugin: describe your ideal customer profile in plain language to find prospects, enrich contacts with emails, phone numbers and company data, and bulk-add them to outreach sequences. Connects to Apollo's remote MCP; needs an Apollo account, and enrichment uses credits.

Generates people analytics reports from employee data: headcount snapshots, voluntary and involuntary attrition, diversity metrics, spans of control and flight risk, with findings and recommendations for leadership. Needs an uploaded employee CSV or a connected HRIS. 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.

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.

Collects reviews and complaints from Google, Yelp, Facebook and more, groups them by theme with quotes, and drafts replies in the owner's voice that post only after approval; also finds lapsed customers and drafts win-back messages. Official Anthropic small-business plugin.

Builds onboarding plans for new hires: a pre-start checklist (accounts, equipment, buddy), day-one and first-week schedules, and 30/60/90-day goals. Works in plain chat; with an HRIS, knowledge base or calendar connected it pulls in team info and books day-one events. Official from Anthropic.

Builds structured interview kits for a role: behavioral and situational questions by competency, follow-up probes, a 1 to 4 scoring rubric and a debrief template, so interviewers assess candidates against the same bar. Part of Anthropic's official human-resources plugin.

Runs compliance checks on planned features, marketing campaigns or business initiatives: identifies applicable regulations such as GDPR and CCPA, required approvals and risks, and concludes go, go with conditions, or needs further review. From Anthropic's legal plugin; not legal advice.

Reviews contracts clause by clause against your organization's negotiation playbook, flags deviations, proposes redlines and analyzes business impact. A skill from Anthropic's official legal plugin; conclusions need review by a legal professional.

Checks hours before payroll for US small businesses: totals regular time, overtime and PTO from Gusto, QuickBooks Payroll or timesheets, and flags missed punches, overtime anomalies, rate changes and mid-period hires or exits. Prepares only, never runs payroll. Official from Anthropic.

Tracks the hiring funnel through sourcing, screening, interviews, debrief and offer, watching stage time and conversion, source effectiveness, offer acceptance and time to hire. With an ATS connected it pulls candidate data and updates status. A brief skill from Anthropic's human-resources plugin.

Adds a workflow layer to OpenAI's Codex CLI: requirement clarification, plan review, persistent goals, parallel multi-agent teams and tmux session management, with project state in .omx/ and a bundled Codex plugin. Community project; needs a signed-in Codex CLI, macOS or Linux recommended.