io.github.MukundaKatta/agentguard
agentguard
Network-egress firewall for agent tools: check URLs against a declarative policy.
alive probed 2026-10-19
3tools
≈ 641tokens, estimate
≈ 0.3 %of Claude's 200k window
0.4×the median server
298 msto initialize
5 msto list tools
- Run it
- npx -y @mukundakatta/agentguard-mcp@0.1.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- agentguard 0.1.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- ≈ <0.1 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Repository
- https://github.com/MukundaKatta/agentguard-mcp
- Website
- https://github.com/MukundaKatta/agentguard-mcp
- Registry
- active, updated 2026-04-27 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| check_urls_batch | 229 | 36 % |
| check_url | 220 | 34 % |
| validate_policy | 192 | 30 % |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.