Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
/plugin marketplace add gruckion/nested-subagentnpx agentmods add plugins/gruckion/nested-subagent/marketplacegit clone --depth 1 https://github.com/gruckion/nested-subagentGrade A, and why
fallback-agent scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
{
"name": "fallback-agent",
"owner": {
"name": "gruckion"
},
"description": "Fallback agent with full tool access for unlimited nesting",
"plugins": [
{
"name": "fallback-agent",
"source": "./",
"description": "Fallback agent that spawns fresh Claude processes with full tool access. Bypasses the native Task tool's recursion limit, enabling unlimited nesting.",
"version": "1.0.3",
"mcpServers": {
"fallback": {
"command": "node",
"args": ["${CLAUDE_PLUGIN_ROOT}/mcp-server/dist/index.mjs"]
}
},
"strict": false
}
]
}
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 23 lines scan A 169a267abd07
fallback-agent is a plugin published in the GitHub repository gruckion/nested-subagent (24 stars, last pushed 7mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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