Updated 1mo ago
by cosmicstack-labs
mercury-agent-skills
A curated registry of reusable Mercury Agent, Open Claw or Hermes Agent skills designed for real developer workflows, persistent memory, and token-efficient execution.
480 GitHub stars (480)
+8 in 16 days
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- 30 skills (30 skills found in its SKILL.md files)
- 65 forks (65 forks)
- 1mo ago last update (Last updated 1mo ago)
Install
Skills CLI
npx skills add cosmicstack-labs/mercury-agent-skills
Asks which skills and agents to install. Just one: npx skills add cosmicstack-labs/mercury-agent-skills --skill agent-audit-logging — add -g for every project.
Claude Code
git clone https://github.com/cosmicstack-labs/mercury-agent-skillscp -r "mercury-agent-skills/categories/ai-ml/agent-audit-logging" ~/.claude/skills/
Copies the agent-audit-logging skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.
Plugin
/plugin marketplace add cosmicstack-labs/mercury-agent-skills
Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.
Skills can run code on your machine — read the SKILL.md first.
What it does
In the author's own words, from each skill's SKILL.md — showing the first 30 of 137 files.
-
agent-audit-logging
Implement comprehensive audit logging and reporting for multi-agent systems. Covers event capture, structured logging, traceability, compliance reporting, forensic analysis, and real-time monitoring dashboards for agent actions and decisions.
categories/ai-ml/agent-audit-logging/SKILL.md on GitHub (opens in a new tab) -
agent-handoff-protocols
Design and implement agent-to-agent handoff protocols for multi-agent systems. Covers context passing, escalation patterns, handshake mechanisms, conversation continuity, and routing between specialized agents in production workflows.
categories/ai-ml/agent-handoff-protocols/SKILL.md on GitHub (opens in a new tab) -
agent-health-monitoring
Monitor AI agent health, detect anomalies, set up alerting, and maintain observability dashboards for production multi-agent systems. Covers liveness checks, performance metrics, drift detection, and incident response.
categories/ai-ml/agent-health-monitoring/SKILL.md on GitHub (opens in a new tab) -
agent-task-delegation
Design and operate task delegation systems for multi-agent fleets. Covers workload distribution, load balancing, queue management, priority scheduling, and dynamic agent scaling for production agent systems.
categories/ai-ml/agent-task-delegation/SKILL.md on GitHub (opens in a new tab) -
ai-agent-design
Comprehensive guide to designing, building, and operating AI agents. Covers agent architecture, tool use patterns, memory systems, orchestration strategies, planning approaches, error recovery, and safety guardrails for production-grade agent systems.
categories/ai-ml/ai-agent-design/SKILL.md on GitHub (opens in a new tab) -
error-recovery-retry
Design robust error recovery, retry logic, and fallback strategies for production AI agents. Covers transient failure handling, circuit breakers, exponential backoff, state recovery, graceful degradation, and dead-letter queues for agent systems.
categories/ai-ml/error-recovery-retry/SKILL.md on GitHub (opens in a new tab) -
gbrain-lite
Lightweight personal knowledge base — markdown + YAML frontmatter structured notes with full-text search and cross-referencing for AI agents
categories/ai-ml/gbrain-lite/SKILL.md on GitHub (opens in a new tab) -
memory-management
Design and operate memory systems for long-running AI agents. Covers context window optimization, summarization strategies, vector-based retrieval, episodic memory, memory consolidation, and garbage collection for production agent systems.
categories/ai-ml/memory-management/SKILL.md on GitHub (opens in a new tab) -
prompt-engineering
Master the art and science of crafting effective prompts for large language models. Covers foundational patterns, advanced techniques like chain-of-thought and role prompting, structured output formats, and practical strategies for iterative refinement.
categories/ai-ml/prompt-engineering/SKILL.md on GitHub (opens in a new tab) -
prompt-version-management
Manage prompt versions, run A/B tests across agent prompts, track performance regressions, and safely roll out prompt changes in production. Covers prompt diffing, semantic versioning, canary releases, and automated evaluation.
categories/ai-ml/prompt-version-management/SKILL.md on GitHub (opens in a new tab) -
routerbase-model-gateway
Configure RouterBase as an OpenAI compatible model gateway for AI apps, with routing, fallback, media generation, and credential handling patterns.
categories/ai-ml/routerbase-model-gateway/SKILL.md on GitHub (opens in a new tab) -
token-budget-tracking
Track, optimize, and control token consumption across multi-agent systems. Covers budget allocation, real-time monitoring, cost attribution, per-agent limits, and proactive cost optimization for production LLM deployments.
categories/ai-ml/token-budget-tracking/SKILL.md on GitHub (opens in a new tab) -
daily-briefing
Automated daily tech briefing — multi-source collection → knowledge-base deduplication → AI summarization → TTS speech synthesis, generating MP3 audio briefings
categories/automation/daily-briefing/SKILL.md on GitHub (opens in a new tab) -
screenshot
Capture high-fidelity screenshots of any website using Playwright — supports custom viewports, dark/light mode, mobile/tablet/desktop presets, split-screen, element-based capture by CSS selector, and text-based area capture. Integrates with Telegram or any output channel for delivery.
categories/automation/screenshot/SKILL.md on GitHub (opens in a new tab) -
Shell Scripting
Master shell scripting best practices, error handling, portability, debugging, and performance optimization for reliable automation scripts
categories/automation/shell-scripting/SKILL.md on GitHub (opens in a new tab) -
twitter-account-manager
EDUCATIONAL / RESEARCH ONLY — Single-account always-on Twitter/X manager driven by cookies + headless Playwright. Runs a 10-minute scheduler that drafts posts, engages with timeline/search results, and queues anything risky for Telegram human approval. Hard daily ceilings, structural prompt-injection defenses, and DM auto-reply permanently disabled. Accounts WILL be terminated — we do not encoura…
categories/automation/twitter-account-manager/SKILL.md on GitHub (opens in a new tab) -
Workflow Automation
Master workflow design, n8n patterns, automation triggers, error handling, and monitoring for reliable business process automation
categories/automation/workflow-automation/SKILL.md on GitHub (opens in a new tab) -
x-twitter-automation
Design safe X/Twitter automation workflows for tweet search, reply reads, monitoring, posting, and agent-operated social media actions
categories/automation/x-twitter-automation/SKILL.md on GitHub (opens in a new tab) -
youtube-research-automation
Design agent workflows that pull YouTube transcripts, search videos and channels, and monitor new uploads without Google API quotas or OAuth setup
categories/automation/youtube-research-automation/SKILL.md on GitHub (opens in a new tab) -
api-design
REST and GraphQL API design principles, versioning, error handling, and documentation patterns
categories/backend/api-design/SKILL.md on GitHub (opens in a new tab) -
authentication-authorization
JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation
categories/backend/authentication-authorization/SKILL.md on GitHub (opens in a new tab) -
caching-strategies
CDN, Redis, in-memory cache, cache invalidation, and distributed caching patterns
categories/backend/caching-strategies/SKILL.md on GitHub (opens in a new tab) -
database-design
Schema design, normalization, indexing, migrations, and query optimization for SQL and NoSQL
categories/backend/database-design/SKILL.md on GitHub (opens in a new tab) -
message-queues
RabbitMQ, Kafka, SQS, pub/sub, competing consumers, dead letter queues, and event streaming
categories/backend/message-queues/SKILL.md on GitHub (opens in a new tab) -
microservices
Service boundaries, communication patterns, event sourcing, CQRS, and distributed tracing
categories/backend/microservices/SKILL.md on GitHub (opens in a new tab) -
nodejs-patterns
Async control flow, error handling, module design, streams, and production hardening
categories/backend/nodejs-patterns/SKILL.md on GitHub (opens in a new tab) -
python-patterns
Python best practices including type hints, async patterns, testing, and project structure
categories/backend/python-patterns/SKILL.md on GitHub (opens in a new tab) -
serverless-patterns
Lambda, cold starts, event-driven design, API Gateway, and serverless frameworks
categories/backend/serverless-patterns/SKILL.md on GitHub (opens in a new tab) -
event-staffing-compliance
Assess worker classification and compliance risk for temporary event staffing in the US and Canada. Use when a user asks about W-2 vs 1099 event workers, misclassification penalties, joint-employer liability, COI requirements, or wage/hour rules for event staff. Includes live state-by-state lookups via the TempGuru MCP server.
categories/business/event-staffing-compliance/SKILL.md on GitHub (opens in a new tab) -
event-staffing-ordering
Order W-2 compliant temporary event staff for conventions, trade shows, festivals, concerts, sporting events, and brand activations in 300+ US and Canadian markets. Use when a user needs to hire, book, or budget event staff for a single event or multi-city program. Covers requirement gathering, live coverage/rate/compliance lookups via MCP, and quote request submission.
categories/business/event-staffing-ordering/SKILL.md on GitHub (opens in a new tab)
No skill matches that filter.
Review before you install
A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.
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