Why did sign-ups drop?
Quest Find out why sign-ups fell last week using PostHog and a local data export
- Hero
- Claude Code
- Weapon
Claude Sonnet 5.5- Charge
PostHog
DuckDB / MotherDuck MCP
Anthropic Data
Alchemist skill tree
Every spell in this class, in the row where it usually goes. Pick a few from each row for a loadout.
ScoutGather context
CraftMake the thing
TestCheck the work
ShipDeliver it
Nothing equipped here
Loadouts
Combos
Analyze local files, then check the result
Alchemist · Data analysis- DuckDB / MotherDuck MCP
- Anthropic Data
Spells
16 spells
Creates and edits spreadsheets with formulas, formatting, and a LibreOffice recalculation check.
182,629 GitHub stars on anthropics/skills
K-Dense skill for bounded local EDA of CSV, TSV and JSON files: profiles, missingness and leakage audits, outlier checks and a report scaffold.
53,680 GitHub stars on K-Dense-AI/scientific-agent-skills
K-Dense skill for hypothesis tests on research data: picks the test, checks assumptions, reports effect sizes with intervals in APA style.
53,680 GitHub stars on K-Dense-AI/scientific-agent-skills
Core plugin of Claude for Financial Services: DCF, comps, LBO and 3-statement models in Excel, plus skills that clean and audit spreadsheets.
40,670 GitHub stars on anthropics/financial-services
Anthropic's financial services plugins: comps, DCF, LBO and 3-statement models, earnings notes, IC memos and agents such as GL Reconciler.
40,651 GitHub stars on anthropics/financial-services
Data analyst plugin with skills for SQL, data profiling, charts, HTML dashboards and a check before you share results.
31,186 GitHub stars on anthropics/knowledge-work-plugins
Codex skills that install Mixpanel's Python SDK and run funnel, retention, flow and segmentation analyses in code.
7,528 GitHub stars on openai/plugins
Codex plugin that turns product and business questions into analyses, metric diagnoses, KPI plans, dashboards and notebooks.
7,528 GitHub stars on openai/plugins
Experimental local MCP server from Google Analytics: account details, core, funnel and realtime reports through the GA Admin and Data APIs.
3,530 GitHub stars on googleanalytics/google-analytics-mcp
Gives the agent your dbt project: model lineage, Semantic Layer metrics, model health and dbt build, compile and docs commands.
612 GitHub stars on dbt-labs/dbt-mcp
DuckDB's Claude Code plugin: read CSV, JSON, Parquet, Excel or SQLite files, query them in SQL or plain English, and convert between formats.
609 GitHub stars on duckdb/duckdb-skills
Local MCP server that runs DuckDB SQL on in-memory databases, local files, S3 or MotherDuck and lists tables and columns.
533 GitHub stars on motherduckdb/mcp-server-motherduck5,096 PyPI downloads last week for mcp-server-motherduck
Databricks skills for data discovery, SQL, jobs, pipelines, apps, Lakebase and model serving, with setup hooks.
360 GitHub stars on databricks/databricks-agent-skills
marimo's skill for writing reactive Python notebooks as plain .py files, with SQL cells, UI widgets and a marimo check pass before handoff.
174 GitHub stars on marimo-team/skills
Official PostHog plugin: query insights, manage feature flags and experiments, read errors, plus 30+ skills.
93 GitHub stars on PostHog/ai-plugin
Google plugin that finds BigQuery tables, runs SQL and adds forecasting and contribution analysis from plain questions.
50 GitHub stars on GoogleCloudPlatform/bigquery-data-analytics-plugin