What is the key difference between Agentstamp and Kastell?

Agentstamp belongs to the Security category with cloud HTTP/SSE execution, while Kastell belongs to the Security category with local stdio execution.

How do I install Agentstamp or Kastell in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Agentstamp and Kastell free or paid?

Agentstamp operates under a Free / Open Source model (other). Kastell operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Agentstamp lists 14 tools with 2 views and 1 GitHub stars. Kastell lists 6 tools with 4 views and 59 GitHub stars.

Can I use both Agentstamp and Kastell together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Agentstamp vs Kastell

In-depth architectural comparison of the Agentstamp and Kastell MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Agentstamp

Security · Remote HTTP/SSE

Quality: 52/100 (Good) | Auth: other

Kastell

Security · Local stdio

Quality: 63/100 (Good) | Auth: No auth required

Verdict Summary: Choose Agentstamp if you need specialized Security tools running via a hosted cloud SSE transport. Choose Kastell if your workspace requires Security integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Agentstamp when:

You need dedicated capabilities in the Security domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: other (Free / Open Source).
Primary tools included: search_agents, get_agent, verify_stamp.

Explore Agentstamp Details

Choose Kastell when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: Server security audits with remediation, SSH hardening and fail2ban setup, UFW firewall management.

Explore Kastell Details

Feature & Specification Comparison

Specification	Agentstamp vinaybhosle Security	Kastell kastelldev Security
Summary	Trust intelligence for AI agents — identity stamps, reputation scoring (0-100), registry, forensic audit trails, and A2A passports via x402 micropayments.	Server security auditing and hardening toolkit. 413 security checks across 29 categories (SSH, Firewall, Docker, TLS, HTTP Headers), CIS/PCI-DSS/HIPAA compliance mapping, 19-step production hardening, fleet management, and forensic evidence collection. Supports Hetzner, DigitalOcean, Vultr, and Linode. 13 MCP tools.
Category & Scope

Tools & Capabilities Breakdown

Agentstamp Tools (14)

search_agents

Search by query/category

get_agent

Full agent profile with endorsements

verify_stamp

Verify identity certificate

browse_agents

Browse with sort/filter

get_leaderboard

Top agents + categories

get_agent_reputation

Reputation score (0-100) breakdown

browse_wishes

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Agentstamp Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "vinaybhosle-agentstamp": {
      "url": "https://agentstamp.org/mcp"
    }
  }
}

Kastell Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "kastelldev-kastell": {
      "command": "npx",
      "args": [
        "-y",
        "kastell"
      ]
    }
  }
}

Frequently Asked Questions

Agentstamp is categorized under Security and uses a remote streaming HTTP/SSE transport. In contrast, Kastell belongs to Security using local stdio subprocess. Select Agentstamp when you need capabilities focused on security and Kastell when you require tools for security.

More alternatives to Agentstamp More alternatives to Kastell Security category hub Canonical compare URL