# Lightlines

> Lightlines is a catalogue of Agent Skills (SKILL.md packages with optional scripts, references and assets) for people and their AI agents. Connect an agent once through MCP and it can find, install, use and share Skills; teams keep Skills in shared Workspaces with revisions, comments and forks. The public Catalogue can be browsed without signing in.

Works with Claude, ChatGPT, Cursor, Gemini, or Codex, or any agent that speaks MCP.

## Connect an agent

- [Connect your agent](https://lightlines.ai/connect): MCP server URL https://lightlines.ai/mcp, plus setup for each client
- Claude Code: `claude mcp add --transport http --scope user lightlines https://lightlines.ai/mcp` then `claude mcp login lightlines`
- Codex: `codex mcp add lightlines --url https://lightlines.ai/mcp`

## Browse Skills

- [Catalogue](https://lightlines.ai/catalogue): all public Skills, with what each does, its author, files, requirements and access

## Most installed Skills

- [grill-me by mattpocock](https://lightlines.ai/g/mattpocock/grill-me): Sharpens a plan or design through a relentless interview.
- [handoff by mattpocock](https://lightlines.ai/g/mattpocock/handoff): Creates a conversation handoff document so another agent can continue the work.
- [grill-with-docs by mattpocock](https://lightlines.ai/g/mattpocock/grill-with-docs): Sharpens a plan or design through an interview while creating ADRs and a glossary.
- [triage by mattpocock](https://lightlines.ai/g/mattpocock/triage): Classifies issues and pull requests into triage states and produces implementation briefs.
- [prototype by mattpocock](https://lightlines.ai/g/mattpocock/prototype): Creates throwaway logic demos or contrasting UI variants to help users resolve a design question.
- [improve-codebase-architecture by mattpocock](https://lightlines.ai/g/mattpocock/improve-codebase-architecture): Identifies architectural refactors and presents a visual report so the user can choose an improvement for guided discussion.
- [frontend-design by anthropics](https://lightlines.ai/g/anthropics/frontend-design): Guides the agent to build interfaces with a distinctive visual identity grounded in the user's brief.
- [grilling by mattpocock](https://lightlines.ai/g/mattpocock/grilling): Stress-tests a user's plan, decision, or idea through questions that uncover unresolved decisions and assumptions.
- [tdd by mattpocock](https://lightlines.ai/g/mattpocock/tdd): Guides test-first implementation so features and bug fixes gain behavior-focused tests that survive internal changes.
- [agent-browser by vercel-labs](https://lightlines.ai/g/vercel-labs/agent-browser): Automates website interactions and browser testing through the agent-browser CLI.
- [setup-matt-pocock-skills by mattpocock](https://lightlines.ai/g/mattpocock/setup-matt-pocock-skills): Configures a repository's issue-tracking conventions, triage labels, and domain documentation for other engineering skills.
- [domain-modeling by mattpocock](https://lightlines.ai/g/mattpocock/domain-modeling): Clarifies a project's domain concepts and records agreed terminology and consequential decisions in glossaries and architecture decision records.
- [teach by mattpocock](https://lightlines.ai/g/mattpocock/teach): Teaches a chosen topic through short interactive lessons and reusable references, preserving learning progress across sessions.
- [codebase-design by mattpocock](https://lightlines.ai/g/mattpocock/codebase-design): Guides module design toward small interfaces that hide complexity and make code easier to maintain and test.
- [diagnosing-bugs by mattpocock](https://lightlines.ai/g/mattpocock/diagnosing-bugs): Guides bug fixes through reproducible failures, targeted investigation, and regression checks.
- [vercel-react-best-practices by vercel-labs](https://lightlines.ai/g/vercel-labs/vercel-react-best-practices): Improves React and Next.js code through performance guidelines for writing, reviewing, and refactoring.
- [code-review by mattpocock](https://lightlines.ai/g/mattpocock/code-review): Reviews code changes against repository standards and the originating specification, returning separate findings for each.
- [hyperframes-animation by heygen-com](https://lightlines.ai/g/heygen-com/hyperframes-animation): Guides agents in building and auditing deterministic animations for HyperFrames compositions.
- [ask-matt by mattpocock](https://lightlines.ai/g/mattpocock/ask-matt): Guides users to a suitable coding skill or workflow for their situation.
- [implement by mattpocock](https://lightlines.ai/g/mattpocock/implement): Implements specified work in a codebase, tests and reviews it, and commits the changes.
- [hyperframes-creative by heygen-com](https://lightlines.ai/g/heygen-com/hyperframes-creative): Guides the visual style, narration, pacing, and composition of HyperFrames videos.
- [design-mobile-apps by designed-by-ai](https://lightlines.ai/g/designed-by-ai/design-mobile-apps): Creates and revises mobile app designs in Sleek and implements them in React Native or HTML.
- [media-use by heygen-com](https://lightlines.ai/g/heygen-com/media-use): Finds, creates, and treats media assets for HyperFrames videos, saving them locally in the project.
- [wayfinder by mattpocock](https://lightlines.ai/g/mattpocock/wayfinder): Guides large efforts toward clear decisions through an issue-tracker map worked across multiple sessions.
- [to-spec by mattpocock](https://lightlines.ai/g/mattpocock/to-spec): Turns an existing coding conversation into a feature specification and publishes it to the project's issue tracker.

## Key facts

- A Skill is a folder with a SKILL.md (YAML frontmatter `name` and `description`, then instructions) and optional scripts/, references/ and assets/, following the Agent Skills specification (https://agentskills.io/specification).
- Browsing the Catalogue needs no account. Sign in to collect Skills in a Workspace, share them, or publish your own.
- Skills are private, shared with specific people, or public in the Catalogue.
- Each agent connection is scoped: you choose whether it can read or also change Skills, and which Workspaces it reaches.

## Optional

- [Terms](https://lightlines.ai/terms)
- [Privacy](https://lightlines.ai/privacy)