# Tools > Every listed resource, editors’ picks first. The filters below can be combined. - Search: append `?q=` to the URL. Separate several keywords with spaces; all of them must match. Matches name, repository, tags, professions, description and README. - Filter by type: append `?type=` to the URL. - Filter by profession: append `?profession=` to the URL. Separate several ids with commas; a resource matches when it suits any of them. Ids are listed at https://hebbmind.com/api/v1/professions - Filter by tag: append `?tag=` to the URL. Separate several tags with commas; a resource must carry all of them. Tags are listed at https://hebbmind.com/api/v1/tags Type Skill, Resources for ML / AI or Data analysis or Security or Founders: 224 items. > - ML / AI: Model training, evaluation and LLM application development. > - Data analysis: Querying, statistical analysis, reporting and visualization. > - Security: Code audits, vulnerability triage, penetration testing and compliance. > - Founders: Business plans, fundraising decks, business analysis and team management. - [Skill Creator](https://hebbmind.com/skill/skill-creator.md): [Skill] Guides the agent through writing or improving a skill: clarify intent, draft SKILL.md, run scored evals with and without the skill, then tune the description so it triggers accurately. Official Anthropic skill. - [Browser Use](https://hebbmind.com/skill/browser-use.md): [Skill] Controls your local Chrome over CDP to navigate, click, type, take screenshots and scrape data, reusing logged-in sessions. Official browser-use skill; install the browser-use CLI with uv first. - [Scientific Agent Skills](https://hebbmind.com/skill/scientific-agent-skills.md): [Skill] 166 research skills maintained by K-Dense (formerly Claude Scientific Skills), spanning bioinformatics, cheminformatics, clinical research, materials and physics, including unified access to 78 public databases such as PubChem and UniProt. Works with Claude Code, Codex and Cursor. - [Trail of Bits Skills](https://hebbmind.com/skill/trailofbits-skills.md): [Skill] Skills from security firm Trail of Bits: 40+ plugins for code auditing, CodeQL and Semgrep static analysis, differential review, smart-contract and cryptography audits, fuzzing and more. Also installable as a Claude Code or Codex plugin marketplace. - [Grill Me](https://hebbmind.com/skill/grill-me.md): [Skill] Before you build, the agent grills you on your plan or design, offering a recommended answer each round, until every decision branch is resolved. It calls the grilling skill from the same repo, so install both. - [Customer Billing Ops](https://hebbmind.com/skill/customer-billing-ops.md): [Skill] Resolves subscription billing issues: checks customer and subscription state, separates duplicate purchases, team seats and failed payments, restores self-serve before refunding, and drafts the reply. Needs Stripe or similar tools connected; refunds move real money, so review them. - [XLSX](https://hebbmind.com/skill/xlsx.md): [Skill] Creates, edits and analyzes Excel spreadsheets: formulas, formatting, charts and data cleaning, plus conversion between CSV, TSV and other tabular formats. The official Anthropic skill behind Claude's document features; source-available, not open source. - [Discernment Nudge](https://hebbmind.com/skill/discernment-nudge.md): [Skill] After giving advice, a draft or a data analysis, adds 2-3 targeted follow-up questions that prompt the user to check key facts, test the reasoning and fill in missing context. Fires at most once per conversation. Official Anthropic skill. - [MCP Builder](https://hebbmind.com/skill/mcp-builder.md): [Skill] Guides agents in building quality MCP servers: research the protocol and target API, design tools, implement with Python (FastMCP) or the TypeScript SDK, and write evaluation questions to test the result. Official Anthropic skill. - [PPTX](https://hebbmind.com/skill/pptx.md): [Skill] Creates, reads and edits PowerPoint decks: applies templates and layouts, handles speaker notes and comments, and merges or splits slides. The official Anthropic skill behind Claude's document features; source-available, not open source. - [Claude API](https://hebbmind.com/skill/claude-api.md): [Skill] Reference for the Claude API and Anthropic SDK: model selection and pricing, streaming, tool use, prompt caching, Managed Agents and more, plus workflows for model migration and prompt audits. Official Anthropic skill. - [Internal Comms](https://hebbmind.com/skill/internal-comms.md): [Skill] Writes internal communications in familiar company formats: 3P updates, leadership reports, project status updates, company newsletters, FAQs and incident reports. Official Anthropic skill. - [gstack](https://hebbmind.com/skill/gstack.md): [Skill] Skill pack from YC president Garry Tan: slash commands such as /office-hours, /plan-ceo-review, /review, /qa and /ship play CEO, engineering manager, designer, QA and release engineer. Needs Git and Bun; clone the repo and run ./setup as the README describes. - [office-hours (gstack)](https://hebbmind.com/skill/office-hours.md): [Skill] YC office hours skill from gstack: startup mode tests real demand, the narrowest wedge and future fit with six probing questions; builder mode brainstorms side projects, hackathons and open source. Ends with a design doc. Maintained by Garry Tan. - [Interview Me](https://hebbmind.com/skill/interview-me.md): [Skill] For fuzzy requirements: the agent asks one question at a time with its own guess, clarifying users, motivation, success criteria and constraints, and restates the intent for your confirmation before planning. Needs you answering live, so not for unattended runs. From Addy Osmani's agent-skills. - [Invoice Organizer](https://hebbmind.com/skill/invoice-organizer.md): [Skill] Reads messy invoices and receipts (PDFs, scans, screenshots), extracts vendor, date and amount, renames and files them by vendor, category or year, keeps originals and can export a CSV for your accountant. Needs an agent with local file access; no account required. - [PPT Master](https://hebbmind.com/skill/ppt-master.md): [Skill] Generates natively editable PPTX from PDFs, Word files, web pages and other sources, with native shapes, data charts and master layouts. Can also fill your own template and add animations and narration to finished decks. Needs Python 3.10+ and its dependencies. - [last30days](https://hebbmind.com/skill/last30days-skill.md): [Skill] Searches Reddit, X, YouTube, Hacker News, Polymarket and more in parallel for the past 30 days of discussion on a topic, scores it by engagement and summarizes it into a brief. Good for market research and meeting prep. Needs Python 3.12+; some sources need API keys. - [Competitor Profiling](https://hebbmind.com/skill/competitor-profiling.md): [Skill] Give it competitor URLs and it scrapes homepages, pricing, feature pages and third-party reviews, adds SEO and traffic data, and writes standardized profiles of positioning, features, pricing, customers and differentiators. Needs Firecrawl and DataForSEO MCPs with API keys. - [churn-prevention](https://hebbmind.com/skill/churn-prevention.md): [Skill] Helps subscription products reduce churn: designs cancellation flows, save offers and exit surveys, spots churn risk signals, and plans dunning and win-back emails after failed payments. For customer success, lifecycle and growth teams; billing platforms like Stripe need setup on your side. - [Cold Email](https://hebbmind.com/skill/cold-email.md): [Skill] Writes B2B cold emails and multi-step follow-up sequences, refining subject lines, openers, body and calls to action so they feel personal and human. Suited to SDRs and founders doing outbound. From the marketingskills collection; no extra account needed. - [Customer Research](https://hebbmind.com/skill/coreyhaines31-customer-research.md): [Skill] Runs and analyzes customer research: pulls pain points, buying motives and verbatim quotes from interviews, surveys, support tickets, review sites and community posts, builds personas and JTBD, and designs interview guides and PMF surveys. From the marketingskills collection. - [Marketing Skills](https://hebbmind.com/skill/marketingskills.md): [Skill] Marketing skill collection: 50 skills covering SEO audits, conversion optimization, landing page copy, pricing, paid ads, email and social media, all sharing a common product marketing context. Supports Claude Code, Codex and more. - [Paid Ads](https://hebbmind.com/skill/ads.md): [Skill] Paid ads advisor: plans campaigns on Google Ads, Meta, LinkedIn, X and more, covering audience targeting, bidding and budgets, account diagnostics and ROAS/CPA optimization. From the marketingskills collection; needs no API key itself. - [Statistical Analysis](https://hebbmind.com/skill/statistical-analysis.md): [Skill] Guides agents to the right statistical method for research data: t-tests, ANOVA, chi-square, regression and Bayesian analysis, checking assumptions, computing effect sizes and power, and reporting results in APA format. Python-based (pingouin, statsmodels); by K-Dense. - [Database Lookup](https://hebbmind.com/skill/database-lookup.md): [Skill] Unified database lookup skill from K-Dense's scientific collection: reproducibly queries about 80 public database APIs such as PubChem, UniProt, ChEMBL, ClinicalTrials.gov and FRED, returning traceable results with endpoints, parameters and count checks. Some need API keys. - [Scanpy Single-Cell Analysis](https://hebbmind.com/skill/scanpy.md): [Skill] Teaches agents standard single-cell RNA-seq analysis with Scanpy: QC, normalization, PCA/UMAP, clustering, differential expression and plots, with ready-to-run pipeline scripts and guidance on converting Seurat and other R objects to h5ad. Needs Python 3.12+; by K-Dense. - [BMad Method](https://hebbmind.com/skill/bmad-method.md): [Skill] Agile AI-driven development method: analyst, product manager, UX designer and other role skills turn ideas into product briefs, PRDs and PRFAQs, then split them into tasks for agents. Needs a skills-capable agent such as Claude Code, plus Node.js, Git and uv; then run bmad setup. - [Agentic Awesome Skills](https://hebbmind.com/skill/agentic-awesome-skills.md): [Skill] Collection of 2,400+ installable SKILL.md skills across development, security, cloud and ops, AI, marketing and more, with the AAS Core local MCP and an installer that help agents search, pick skills and preview install plans. Formerly antigravity-awesome-skills. - [wshobson/agents](https://hebbmind.com/skill/wshobson-agents.md): [Skill] The 180+ skills bundled with the 90+ plugins in the wshobson/agents marketplace, covering development across many languages and frameworks, testing, ops, security, data and LLM apps. Install individually with npx skills or gh skill; skills only, without subagents or commands. - [team-composition-analysis](https://hebbmind.com/skill/team-composition-analysis.md): [Skill] Plans teams for seed to Series A startups: which roles to hire at each stage and in what order, org structure, plus salary, equity ranges and headcount budget. Compensation benchmarks are 2024 US market data; adjust for your market and have finance and legal review the plan. - [GDPR Data Handling](https://hebbmind.com/skill/gdpr-data-handling.md): [Skill] EU GDPR compliance skill covering lawful bases, consent management, access and deletion requests, data retention and breach notification, with checklists and sample code so legal and engineering can review privacy together. No account or API key; have a lawyer check conclusions. - [Employment Contract Templates](https://hebbmind.com/skill/employment-contract-templates.md): [Skill] Templates and drafting guidance for offer letters, employment agreements and handbook policies, helping HR and legal produce consistent employment documents. Written for US employment rules; adapt them for other jurisdictions and have a lawyer review final drafts. No account or API key. - [Claude for Financial Services](https://hebbmind.com/skill/financial-services.md): [Skill] Anthropic's official financial services skills for investment banking, equity research, private equity, fund admin and wealth management: comps, DCF, LBO, three-statement models, CIMs, earnings reviews, IC memos, GL reconciliation and more. Outputs need expert review. - [audit-xls](https://hebbmind.com/skill/audit-xls.md): [Skill] Official Anthropic finance skill that checks Excel for formula errors like #REF!, numbers hardcoded in formulas, sum ranges that miss rows and mixed units; on full models it also checks the balance sheet balances and cash ties. Lists issues and fixes and asks before changing anything. - [clean-data-xls](https://hebbmind.com/skill/clean-data-xls.md): [Skill] Official Anthropic skill for cleaning messy Excel exports: trims spaces, standardizes case and dates, converts text numbers, dedupes, and flags mixed types, garbled text and errors. Keeps originals via helper-column formulas and confirms each step. Works in Claude for Excel; local files need Python. - [prd](https://hebbmind.com/skill/prd.md): [Skill] Writes product requirement docs for software and AI features: first asks about the problem, success metrics and constraints, then outputs an executive summary, user stories, technical specs and risk analysis with measurable requirements. From GitHub's awesome-copilot community library. - [Breakdown Epic PM](https://hebbmind.com/skill/breakdown-epic-pm.md): [Skill] Turns a new epic idea into a PRD: problem and goals, personas, user journeys, functional and non-functional requirements, success metrics and out-of-scope items, asking questions when information is missing, saved as Markdown. From GitHub's awesome-copilot collection. - [Find Skills](https://hebbmind.com/skill/find-skills.md): [Skill] When a user asks whether a skill exists for some task, searches the skills.sh ecosystem with the skills CLI, then recommends and installs a fit. Maintained by Vercel Labs and shipped in the skills CLI repo. - [Nuwa Skill](https://hebbmind.com/skill/nuwa-skill.md): [Skill] Give it a person's name or a vague need and it researches and distills their mental models, decision style and voice into a callable persona skill (e.g. Munger, Feynman, Jobs) to aid analysis and decisions. Works with Claude Code, Codex and other agents. - [Anthropic Cybersecurity Skills](https://hebbmind.com/skill/anthropic-cybersecurity-skills.md): [Skill] Community-maintained cybersecurity skill library: 800+ skills across 34 domains including threat hunting, incident forensics, penetration testing and cloud security, mapped to MITRE ATT&CK and NIST CSF. Not by Anthropic; offensive skills are for authorized testing only. - [Cash Flow Snapshot](https://hebbmind.com/skill/cash-flow-snapshot.md): [Skill] 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. - [Email Sequence](https://hebbmind.com/skill/email-sequence.md): [Skill] Designs multi-email marketing sequences for onboarding, lead nurturing, win-back and launches, with full copy for each email, timing, branches and exit conditions, benchmarks and A/B test ideas. No email tool required. Part of Anthropic's official marketing plugin. - [Payroll Prep](https://hebbmind.com/skill/payroll-prep.md): [Skill] 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. - [org-planning](https://hebbmind.com/skill/org-planning.md): [Skill] Helps with headcount planning and org design: maps reporting lines and spans of control, sequences upcoming hires, estimates people costs, and flags structural issues like single points of failure or top-heavy management. Works in plain chat. Official from Anthropic. - [SQL Queries](https://hebbmind.com/skill/sql-queries.md): [Skill] Anthropic's official data skill that guides agents to write, translate and optimize SQL across Snowflake, BigQuery, Databricks, PostgreSQL and other warehouse dialects, including CTEs, window functions and analytical aggregations. - [financial-statements](https://hebbmind.com/skill/financial-statements.md): [Skill] 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. - [people-report](https://hebbmind.com/skill/people-report.md): [Skill] 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. - [Performance Report](https://hebbmind.com/skill/performance-report.md): [Skill] Turns campaign or channel data into weekly, monthly or quarterly marketing reports: executive summary, key metrics and period-over-period trends, wins and misses, and next-period priorities. Connect analytics tools or just paste tables or key numbers. From Anthropic's knowledge-work-plugins. - [compliance-check](https://hebbmind.com/skill/compliance-check.md): [Skill] 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. Next page: https://hebbmind.com/tools.md?page=2&type=skill&profession=algorithm%2Cdata%2Csecurity%2Cfounder