agent-harness-design
Design agent tool sets with stable names, narrow schemas, deterministic output shapes, and explicit error paths. No catch-all tools unless unavoidable.
building
Use when building knowhere from source, configuring build options (CPU/GPU/DISKANN/ASAN), or troubleshooting compilation errors
langsmith-fetch
Debug LangChain and LangGraph agents by fetching execution traces from LangSmith Studio. Use when debugging agent behavior, investigating errors, analyzing tool calls, checking memory operations, or examining agent performance. Automatically fetches recent traces and analyzes execution patterns. Requires langsmith-fetch CLI installed.
configuring-agent-brain
Installation and configuration skill for Agent Brain document search system. Use when asked to "install agent brain", "setup agent brain", "configure agent brain", "setting up document search", "installing agent-brain packages", "configuring API keys", "initializing project for search", "troubleshooting agent brain", "pip install agent-brain", "agent brain not working", "agent brain setup error", "configure embeddings provider", "setup ollama for agent brain", or "agent brain environment variables". Covers package installation, provider configuration, project initialization, and server management.
bulk-update
Update properties or content across many pages in a Notion database with dry-run and error recovery
styx
Styx configuration language syntax and schema reference. Use when writing or editing .styx files, creating schemas, or debugging syntax errors. Covers syntax (scalars, objects, sequences, tags, heredocs), schema language, and CLI validation.
elevenlabs:sdk-migration
Migrate to the next major version of @elevenlabs/client, @elevenlabs/react, and @elevenlabs/react-native. Use when updating code that uses Conversation, Input, Output, useConversation, ElevenLabsProvider, ConversationProvider, or related APIs from these packages. Also trigger when users mention upgrading ElevenLabs packages, fixing breaking changes after an npm update, moving to the latest ElevenLabs SDK, or encountering type errors or runtime errors after updating @elevenlabs/* dependencies.
lucas-runbook
Lucas runbook-driven troubleshooting for Kubernetes issues. Use when investigating pod errors, crashes, restarts, or any Kubernetes problem. Automatically search runbooks before taking action.
devup-ui
Zero-runtime CSS-in-JS preprocessor for React. Transforms JSX styles to static CSS at build time. TRIGGER WHEN: - Writing/modifying Devup UI components (Box, Flex, Grid, Text, Button, etc.) - Using styling APIs: css(), globalCss(), keyframes() - Configuring devup.json theme (colors, typography, extends) - Setting up build plugins (Vite, Next.js, Webpack, Rsbuild, Bun) - Debugging "Cannot run on the runtime" errors - Working with responsive arrays, pseudo-selectors (_hover, _dark, etc.) - Using polymorphic `as` prop or `selectors` prop - Working with @devup-ui/components (Button, Input, Select, Toggle, etc.)
stepback
Use when hitting the same error after 2+ fix attempts, when multiple symptoms share a common system, or when fixes feel like whack-a-mole. Forces architectural reassessment over symptom-patching. Also use proactively when a fix touches infrastructure-level config.
phoenix-cli
Debug LLM applications using the Phoenix CLI. Fetch traces, analyze errors, review experiments, inspect datasets, and query the GraphQL API. Use when debugging AI/LLM applications, analyzing trace data, working with Phoenix observability, or investigating LLM performance issues.
sinch-authentication
Configures Sinch API credentials and authentication. Use when setting up OAuth2, Basic auth, application signing, API keys, or SDK credentials for any Sinch product including Conversation API, Voice, Verification, Numbers, Fax, and Mailgun. Also use when troubleshooting 401 Unauthorized, 403 Forbidden, invalid signature, or credential errors against any Sinch API.
vinkius-deploy
How to deploy MCP servers to Vinkius Edge using `vurb deploy`. Use this skill whenever deploying, configuring remote settings, preparing an entrypoint for edge deployment, or troubleshooting deploy-related errors. Activate when the user says "deploy", "publish to edge", "vurb deploy", "push to Vinkius", mentions .vurbrc, VURB_DEPLOY_TOKEN, or any edge deployment topic.
build-frontend
Builds the Fake Survey Generator React frontend with Vite and TypeScript. Use this skill when frontend code changes need to be compiled and validated for TypeScript errors. This skill orchestrates the npm build command and reports build errors.
gh-issue-bug
Generate a structured bug report for GitHub issues based on conversation context about bugs, errors, or broken functionality
Raygun
Investigate errors, track deployments, analyze performance, and manage application monitoring
disk-usage
Analyze disk space usage, filesystem mounts, and storage allocation on Linux systems. Identifies large files and directories, checks partition usage, and reports inode consumption. Use when the user asks about disk full errors, free space, storage usage, du/df output, finding large files, or checking which directories consume the most space.
fastify-best-practices
Guides development of Fastify Node.js backend servers and REST APIs using TypeScript or JavaScript. Use when building, configuring, or debugging a Fastify application â including defining routes, implementing plugins, setting up JSON Schema validation, handling errors, optimising performance, managing authentication, configuring CORS and security headers, integrating databases, working with WebSockets, and deploying to production. Covers the full Fastify request lifecycle (hooks, serialization, logging with Pino) and TypeScript integration via strip types. Trigger terms: Fastify, Node.js server, REST API, API routes, backend framework, fastify.config, server.ts, app.ts.
agent-tool-contracts
Design agent tools and CLI surfacesâschemas, naming, errors, idempotency, and discoverability for LLM callers. Use when defining tools for agents, SDKs, or AI-native CLIs.
app-store-connect-api
Guide for implementing Apple App Store Connect API integrations. Use when: (1) Building API clients to manage certificates, provisioning profiles, bundle IDs, or devices, (2) Implementing JWT authentication for App Store Connect, (3) Understanding API request/response patterns and error handling, (4) Working with TestFlight builds, beta groups, or app submissions, (5) Discovering available endpoints, schemas, or capabilities via the OpenAPI spec. Includes scripts for fetching and analyzing Apple's official OpenAPI specification.
deadends.dev
Structured failure knowledge for AI agents — dead ends, workarounds, error chains
API Development
Build REST APIs with proper error handling, status codes, request validation, response formatting, and rate limiting. Apply when creating API routes, handling errors, validating input, or designing API responses.
ielts-listening-review
Review IELTS Listening or dictation errors from transcripts, answers, and timestamps, then generate targeted replay drills and a validated Listening Error Notebook DOCX. Use when a learner asks why they missed listening answers, wants a dictation review, provides a transcript or answer key, or needs a focused listening repair plan.
Io.Github.Jawdat6/Fixgraph Mcp
Search 25K+ verified engineering fixes by error or technology. For developers and AI agents.
convex-doctor
Run convex-doctor static analysis, interpret findings, and fix issues across security, performance, correctness, schema, and architecture categories. Use when running convex-doctor, fixing convex-doctor warnings or errors, improving the convex-doctor score, or when asked about Convex code quality, static analysis, or linting Convex functions.
better-result-adopt
Migrate codebase from try/catch or Promise-based error handling to better-result. Use when adopting Result types, converting thrown exceptions to typed errors, or refactoring existing error handling to railway-oriented programming.
link-workspace-packages
Link workspace packages in monorepos (npm, yarn, pnpm, bun). USE WHEN: (1) you just created or generated new packages and need to wire up their dependencies, (2) user imports from a sibling package and needs to add it as a dependency, (3) you get resolution errors for workspace packages (@org/*) like "cannot find module", "failed to resolve import", "TS2307", or "cannot resolve". DO NOT patch around with tsconfig paths or manual package.json edits - use the package manager's workspace commands to fix actual linking.
api-endpoint-generator
Scaffold complete REST API endpoints with input validation, error handling, typed request/response, JSDoc or docstrings, and a unit test stub. Use when asked to create a new API route, endpoint, controller, handler, or REST resource in Express.js (TypeScript) or FastAPI (Python). Produces production-ready code following immutable patterns, Zod/Pydantic validation, and RFC 7807 error responses.
clumsies-error-prone
Load and follow the CLUMSIES_ERROR_PRONE workflow
kafka-connector-review
Review Kafka Connect connector configurations for common misconfigurations using the Lenses MCP server. Checks error handling, DLQ setup, converters, transforms, task count and task health. Use when user says "review connectors", "check connector configs", "why is my connector failing" or asks about Kafka Connect configuration. Do NOT use for creating, deploying or controlling connectors.
minimize-ad-bug
Minimize an AD bug by systematically stripping a failing DynamicPPL model down to its root cause. Use when a model + AD backend gives wrong gradients or errors.
analyze-usage
Use when asked to analyze codescout tool usage, check for error patterns, audit tool health, generate a usage report, spot anti-patterns, or clear usage statistics to start fresh.
kkrpc
Build bidirectional RPC systems in TypeScript with kkrpc. Create RPC channels, expose APIs, use multiple transports (stdio, WebSocket, HTTP), handle callbacks, property access, and errors across Node.js, Deno, Bun, and browsers.
PowerSync Skills
Use this skill to onboard a project onto PowerSync without trial-and-error. Treat this as a guided workflow first and a reference library second.
debug-with-valgrind
Debug crashes, segfaults, and memory errors using valgrind integration with nextest through pre-configured profiles
debugging-dbt-errors
Debugs and fixes dbt errors systematically. Use when working with dbt errors for: (1) Task mentions "fix", "error", "broken", "failing", "debug", "wrong", or "not working" (2) Compilation Error, Database Error, or test failures occur (3) Model produces incorrect output or unexpected results (4) Need to troubleshoot why a dbt command failed Reads full error, checks upstream first, runs dbt build (not just compile) to verify fix.
git-hooks
CopilotKit pre-commit hook reference. Load automatically when the user mentions git hooks failing, pre-commit errors, lefthook issues, commit blocked, or "hooks don't work", or when user wants to commit/push anything Contains the full hook topology so debugging skips discovery and goes straight to diagnosis.
zustand-state-management
Build type-safe global state in React with Zustand. Supports TypeScript, persist middleware, devtools, slices pattern, and Next.js SSR with hydration handling. Prevents 6 documented errors. Use when setting up React state, migrating from Redux/Context, or troubleshooting hydration errors, TypeScript inference, infinite render loops, or persist race conditions.
extract-errors
Use when adding new error messages to React, or seeing "unknown error code" warnings.
debug-deploy
Debug GitHub Actions workflow failures and Terraform errors. Use when deployment failed, Terraform state lock, CI/CD pipeline errors, or troubleshooting deploy.yml.
airflow
Manages Apache Airflow operations including listing, testing, running, and debugging DAGs, viewing task logs, checking connections and variables, and monitoring system health. Use when working with Airflow DAGs, pipelines, workflows, or tasks, or when the user mentions testing dags, running pipelines, debugging workflows, dag failures, task errors, dag status, pipeline status, list dags, show connections, check variables, or airflow health.
act-local-ci
Run GitHub Actions workflows locally before pushing to validate CI/CD pipelines, catch errors early, and reduce iteration time.
api-fetch-wrapper
The case that breaks first in production â a skill that hits an external service. This example covers the four things every such skill needs: secret handling, retry policy, error normalisation, and no-leak-on-failure logging.
quality-scan
Validates structural consistency, cleans up junk files (SCREAMING_TEXT.md, temp files), and performs comprehensive quality scans across codebase to identify critical bugs, logic errors, caching issues, and workflow problems. Spawns specialized agents for targeted analysis and generates prioritized improvement tasks. Use when improving code quality, before releases, or investigating issues.
Io.Github.MasonChow/Source Map Parser Mcp
Parse JavaScript error stack traces back to original source code using source maps
xcdocs
Use when an agent is writing, debugging, or updating code against Apple frameworks and needs local Xcode documentation to resolve compile errors, discover the right symbols, check API shape or availability, confirm usage patterns, or inspect related articles and topics for newly released SDK features.
cuopt-debugging
Troubleshoot cuOpt LP/MILP problems including errors, wrong results, infeasible solutions, performance issues, and status codes. Use when the user says something isn't working, gets unexpected results, or needs help diagnosing issues.
coding-rules
Applies coding standards for clean, maintainable code. Use when: writing functions, handling errors, refactoring, or reviewing code style.
404-page-generator
When the user wants to create, optimize, or audit 404 error pages. Also use when the user mentions "404 page," "404 error," "error page," "page not found," "broken link page," "404 design," "custom 404," "404 redirect," "404 page UX," or "404 recovery."
A full-featured web-based Claude Code client that provides complete interactive functionality for managing Claude Code projects
Fix session log schema parse errors and create a pull request