Explore MCP Servers & Agent Skills

io.github.TryGhost/Ghost/tinybird-cli-guidelines

Tinybird CLI commands, workflows, and operations. Use when running tb commands, managing local development, deploying, or working with data operations.

io.github.PostHog/posthog/creating-box-plot-insights

Creates product analytics or SQL-backed box plot insights in PostHog. Use when a user asks to create, build, or save a box plot, visualize a numeric distribution, compare quartiles or medians across dates or groups, or turn SQL results into a box plot. Chooses between a standard Trends box plot and a SQL insight, validates the distribution data, saves the insight, and verifies it.

io.github.openclaw/openclaw/openclaw-pr-maintainer

Use immediately for any pasted OpenClaw GitHub issue or PR URL/number, and for OpenClaw issue/PR orchestration, review, triage, root-cause repair, PR rewrite, duplicate search, opener identity/who wrote it, author account age/activity, comments, labels, close, land, or maintainer evidence checks.

io.github.PostHog/posthog/debugging-experiments

Debug and support PostHog Experiments (A/B tests) for a customer looking at their own results. Use whenever an experiment support ticket is pasted or a customer asks a results question, most commonly "why aren't my exposures even?", "why is one variant getting no traffic?", "why am I missing / seeing too few exposures?", "why does the bias banner show?", or "why don't PostHog's numbers match my SQL?". Pulls the experiment's real data read-only, matches it to a known-cause catalog, and produces a customer-facing explanation, fix, and review of the pertinent numbers. Loads diagnosing-experiment-results as its deep diagnostic library. DO NOT TRIGGER when: creating an experiment (use creating-experiments), only configuring rollout (configuring-experiment-rollout) or metrics (configuring-experiment-analytics), asking lifecycle questions (managing-experiment-lifecycle), or the underlying feature flag is what's misbehaving rather than the results (use debugging-feature-flags).

io.github.openclaw/openclaw/openclaw-changelog-update

Regenerate OpenClaw release changelog sections from git history before beta, stable, or extended-stable releases.

io.github.nextlevelbuilder/ui-ux-pro-max-skill/banner-design

Design banners for social media, ads, website heroes, creative assets, and print. Multiple art direction options with optional generated or supplied visuals. Actions: design, create, generate banner. Platforms: Facebook, Twitter/X, LinkedIn, YouTube, Instagram, Google Display, website hero, print. Styles: minimalist, gradient, bold typography, photo-based, illustrated, geometric, retro, glassmorphism, 3D, neon, duotone, editorial, collage.

io.github.PostHog/posthog/turning-engineering-analytics-into-insights

Converts engineering analytics (PR / CI) data into saved PostHog insights, dashboards, and subscriptions, and explains how to query the product data directly with SQL. Covers discovering per-team GitHub warehouse tables via engineering-analytics-sources, replicating curated column semantics in HogQL, reading exposed engineering_analytics_* warehouse views where product logic is involved (CI cost, fingerprinted failure lines, commit attribution), saving queries with insight-create, and scheduling delivery with subscriptions-create. Use when asked to "save this as an insight", "put CI health / merge times on a dashboard", "email me PR throughput weekly", "chart CI cost", "track time to first review", "subscribe to these numbers", "alert on CI success rate", or "what data/tables/views does engineering analytics read". For ad-hoc CI and merge questions use diagnosing-ci-and-merge-bottlenecks; to investigate one specific CI failure use investigating-ci-failures.

io.github.addyosmani/agent-skills/deprecation-and-migration

Manages deprecation and migration. Use when removing old systems, APIs, or features. Use when migrating users from one implementation to another. Use when migrating a database schema in production, such as renaming or dropping a column without downtime (expand/contract). Use when deciding whether to maintain or sunset existing code.

io.github.openclaw/openclaw/control-ui-e2e

Use when testing, fixing, or extending the OpenClaw Control UI GUI with Vitest + Playwright end-to-end checks, mocked Gateway WebSocket flows, mocked dashboard runs, screenshots/videos, or agent-verifiable browser proof.

io.github.prisma/orm/ast-visitor-pattern

Use the frozen-class/visitor pattern for discriminated unions that have multiple dispatch sites. Use when creating a new set of variants (commands, IR nodes, factory calls) that will be switched over in 2+ places, or when refactoring an existing union type that has grown multiple switch sites.

io.github.PostHog/posthog/posthog-desktop

Scopes work to the desktop app at products/desktop — a nested standalone pnpm/turbo/Biome workspace imported from the now-archived PostHog/code repo, with posthog/posthog the only source of truth for PRs, CI and publishing, and not part of the root frontend or Django build. Use when the user says /posthog-desktop, or works on the Electron desktop app, apps/code, apps/web, apps/mobile, packages/core, packages/ui, packages/workspace-server, @posthog/api-client, @posthog/agent, or the agent framework. Pins the working directory to products/desktop, swaps in that tree's toolchain and conventions in place of the monorepo's, and defines the few paths outside the tree that may be touched (Django APIs the app calls, desktop-* CI at the root).

io.github.lobehub/lobehub/design-prototype

Produce an interactive single-file HTML design prototype using the REAL LobeHub design system (@lobehub/ui + antd + antd-style tokens) with production-style React — no build step, opens directly in a browser. Use when asked for a design prototype / interactive mockup / 交互原型 / 出个原型 / 设计稿 HTML for a page or flow, or to explore a redesign before committing to implementation.

io.github.supabase/supabase/explorer

Build and modify Studio Explorer surfaces, including notebooks, chats, SQL snippets, query cells, and their shared toolbar patterns.

io.github.openclaw/openclaw/openclaw-update

Route routine updates of an existing local or remote OpenClaw Gateway to its installation owner, with automatic session recovery. Defer to deployment-specific skills when available.

io.github.openclaw/openclaw/openclaw-repair-sweep

Orchestrate worker fleets over OpenClaw issues and PRs: prove root causes, prefer clean refactors over quick patches, land verified repairs, and close items proven fixed or no longer useful.

io.github.NousResearch/hermes-agent/touchdesigner-mcp

Control TouchDesigner via twozero MCP.

io.github.NousResearch/hermes-agent/sketch

Throwaway HTML mockups: 2-3 design variants to compare.

io.github.NousResearch/hermes-agent/agent-merge-conflict-arbiter

Neutral arbiter for merge conflicts between two agents.

io.github.twentyhq/twenty/qa-scout

Browser QA of a PR against a running Twenty app, post-merge on main or pre-merge via the qa-scout label. Derives user-visible scenarios from the PR diff, executes them with the Playwright MCP browser, attests database effects over SQL, watches server and worker logs for swallowed errors, and writes a structured verdict plus a report. Invoked by ci-e2e-main.yaml after the deterministic e2e suite; also runnable locally against a dev stack.

io.github.NousResearch/hermes-agent/impeccable

Frontend design guidance, upstream-maintained (impeccable).

io.github.NousResearch/hermes-agent/test-driven-development

TDD: enforce RED-GREEN-REFACTOR, tests before code.

io.github.paperclipai/paperclip/prepare-mcp-integration

Prepare MCP/vendor integrations through cited research, a content PR, exact-revision human approval, and one governed Paperclip connector PR per approved connection. Use for new integration research and delivery; not for ad hoc connector coding that bypasses the playbooks.