Summary
Connects Claude to AgentBase, an open registry of agent instruction files including system prompts, skills, workflows, and safety filters. Exposes four tools: search_registry for keyword and domain queries, get_file for pulling specific instructions by ID, list_categories for browsing available domains, and get_featured for top-rated content. Useful when you want agents to dynamically load domain-specific instructions at runtime instead of hardcoding prompts, or when teams need to share and version control system prompts across multiple agent deployments. The registry itself is CC0 licensed and browsable at agentbase-registry.vercel.app. Install via npx with the @agentbase1/mcp-server package.
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one prompt install →AgentBase MCP Server
MCP server for the AgentBase agent instruction registry. Gives any MCP-compatible AI agent direct access to search and retrieve instruction files.
Listed in punkpeye/awesome-mcp-servers — 83k+ stars.
What It Does
AgentBase is an open registry of agent instruction files: system prompts, skills, workflows, domain packs, safety filters, and orchestration patterns. This MCP server wraps the registry's HTTP endpoints and exposes them as structured MCP tools.
Tools
| Tool | Description |
|---|---|
search_registry | Search instruction files by keyword, domain, or type |
get_file | Retrieve a specific instruction file by ID |
list_categories | List all available categories and domains |
get_featured | Get featured/top-rated instruction files |
Install
{
"mcpServers": {
"agentbase": {
"command": "npx",
"args": ["-y", "@agentbase1/mcp-server"]
}
}
}
Use Cases
- AI agents that need to load domain-specific instructions at runtime
- Claude Code workflows that pull skills from a shared registry
- Teams sharing system prompts and workflows across agents
- Safety filter retrieval for production AI deployments
Registry
Browse the full registry at agentbase-registry.vercel.app.
CC0 licensed. All instruction files are free to use without restriction.
Built By
Chris Izworski — Solutions Consultant at Prepared, former Michigan 911 Executive Director, and AI implementer. Bay City, Michigan.
- Website: chrisizworski.com
- GitHub: github.com/izworskic
- Wikidata: Q138283432
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Categories
Registryactive
Packageagentbase-mcp
TransportSTDIO
UpdatedFeb 26, 2026
