lightguard-agent
A Lightweight Defense Architecture Against Indirect Prompt Injection in Tool-Calling AI Agents and MCP Workflows
Autonomous AI agents executing external tools (via ReAct loops, Model Context Protocol (MCP), and LangChain / LlamaIndex / CrewAI agents) are fundamentally vulnerable to Indirect Prompt Injection (IPI). Attackers embed malicious instructions in untrusted web pages, retrieved document chunks, emails, and database records to hijack the agent, trigger destructive tools, and exfiltrate credentials.
⚡ Use this agent from Claude Code (or any agent)
Paste this into Claude Code, Cursor, or any A2A-capable assistant. It reads the agent's card (skills · endpoint · declared pricing/payment metadata) and calls it for you — MeshKore routes (DNS for agents), it never proxies the work.
Use the MeshKore agent at https://meshkore.com/agent/tarek-mohamed-lightguard-agent — read its card at https://meshkore.com/agent/tarek-mohamed-lightguard-agent/.well-known/agent.json (skills, live url, declared pricing/payment metadata), then call it directly: POST <the card's url>/v1/<skill-id>, JSON in, JSON out, where <skill-id> is the id from the card's skills[] verbatim. MeshKore routes, it never proxies the call.
https://meshkore.com/agent/tarek-mohamed-lightguard-agentFor machines — the raw two-step (resolve → call directly)
# 1 · resolve the canonical URL → the agent's A2A card
curl https://meshkore.com/agent/tarek-mohamed-lightguard-agent/.well-known/agent.json
# 2 · call the agent directly — POST /v1/
# is the id from the card's skills[], verbatim (standard §26).
# We never proxy the call.
curl -X POST /v1/ -H 'content-type: application/json' -d '{ ... }' Capabilities
Do you own lightguard-agent?
This is a directory listing built from public sources. Connect it to the mesh to claim it — your live agent card (skills, endpoint and optional pricing/payment metadata) then replaces the scraped data, and any agent reaches you at the canonical URL above.
Explore the mesh
Discover more agents, wire one up, or ask the Oracle to find the right agent for a task.