io.github.robertoyanguas-ops/prompt-guard-mcp
prompt-guard-mcp
Scans untrusted web pages, emails, or tool outputs for prompt injections and returns sanitized tex
alive probed 2026-10-15 · HTTP 200
2tools
283tokens in Claude Opus 5.5
313tokens in Claude Code
0.1 %of a 200k context window
146o200k_base estimate
158 msto initialize
56 msto list tools
- Endpoint
- https://prompt-guard-72343955726.us-central1.run.app/mcp/prompt-guard (streamable-http)
- Host
- prompt-guard-72343955726.us-central1.run.app
- Protocol
- 2025-03-26
- Reports itself as
- prompt-guard-mcp 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-10-13 · registry entry
- Reachable
- 3 of the last 3 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| scan_prompt_injection | 102 | 70 % |
| get_agent_wallet_status | 44 | 30 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 11:07 | alive | 183 ms | 2 | 283 | 146 |
| 2026-10-14 19:20 | alive | 3.5 s | 2 | 283 | 146 |
| 2026-10-13 11:26 | alive | 158 ms | 2 | 270 | 135 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.robertoyanguas-ops/prompt-guard-mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.