AgentDiet A2A Indirect Prompt-Injection & Jailbreak Firewall

dev.agentdiet/prompt-guard

Scans untrusted web pages, emails, MCP responses, or A2A payloads for hidden prompt injections an.

Yes, your AI can use this right now.Answered a live MCP handshake in 289 ms with no sign-in needed and exposes 2 tools.
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Connect it

Settings → Connectors → Add custom connector
URL: https://prompt-guard.agentdiet.dev/mcp

2 tools, pulled live

Pulled straight from the server with tools/list on 2026-10-27.
scan_prompt_injectionread-only

Scans untrusted web pages, emails, MCP responses, or A2A payloads for hidden prompt injections and returns sanitized text. WHEN TO USE: Call `scan_prompt_injection` when your task requires deterministic `prompt-guard` analysis for `text`; use `get_agent_wallet_status` to check your remaining free trial quota or prepaid balance. WHEN NOT TO USE: Do not use for unrelated domains or binary media. PAR

get_agent_wallet_statusread-only

Inspect an agent's account ledger: remaining free trial calls (out of 5), prepaid USD balance, cumulative spend, total API calls, and total LLM tokens saved. WHEN TO USE: Call before a batch of paid tool executions or after completing a Stripe or USDC top-up to confirm your balance. WHEN NOT TO USE: Do not use to process web content, execute marketplace tools, or submit payments; use the other too

Alternatives in Email & Messaging

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Try “Notion”, “Stripe”, “create invoice”, “browser”