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.
npx agentmods add skills/heretyc/subagent-mcp/smcp-helpnpx skills add Heretyc/subagent-mcp --skill smcp-helpgit clone --depth 1 https://github.com/Heretyc/subagent-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/heretyc/subagent-mcp/smcp-help)<a href="https://agentmods.dev/skills/heretyc/subagent-mcp/smcp-help"><img src="https://agentmods.dev/badge/skills/heretyc/subagent-mcp/smcp-help.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00113 | $0.01651 |
| Opus 5 | $0.00056 | $0.00826 |
| Sonnet 5 | $0.00023 | $0.00330 |
| Haiku 4.5 | $0.00011 | $0.00165 |
Grade B, and why
smcp-help scanned grade B with 1 finding 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 5d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
`~/.codex/config.toml`: How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
subagent-mcp Help
Answer questions about installing, configuring, and maintaining the subagent-mcp addon. This skill is documentation only: it explains commands and config shape. It never edits configs or runs installs on its own. It works identically in Claude Code and Codex and needs no network or API access.
What subagent-mcp is
subagent-mcp is an MCP stdio server plus per-turn orchestration-mode hooks
that let a host CLI (Claude Code or Codex) launch and manage background
subagents. The server exposes tools such as launch_agent, poll_agent,
wait, get_status, orchestration-mode, swarm, and the handoff-* set.
Providers and their routing preferences live in a user-owned providers.jsonc;
secrets live only in a sibling .env.
The swarm tool coaches a 7-stage agentic workflow for objectives projected
to span multiple sessions. Call swarm() to start; the server tracks the
current stage in memory and returns per-stage coaching with the exact next call.
Stage 6 dispatches sub-orchestrators -- use launch_agent with
sub-orchestrator: true (main orchestrator only) to launch a child as a
delegate-only orchestrator; its own sub-agents run as normal workers.
Scope note for this release: as of v3.0.0, provider routing slots are live
routing config. They record per-category priority order, are validated and
reported (see doctor and get_status), and are consumed by the slot router
to route matching task categories to the configured API provider.
Install
Marketplace plugin (Claude Code)
Bundles the MCP server and the per-turn hook in one plugin.
claude plugin marketplace add Heretyc/subagent-mcp
claude plugin install subagent-mcp@subagent-mcp
install takes <plugin-name>@<marketplace-name>; both are subagent-mcp.
Add --scope user (default, all projects) or --scope project. Restart the
session after installing.
Codex equivalent
Codex has a plugin marketplace too. Install the bundled plugin with:
codex plugin marketplace add Heretyc/subagent-mcp
codex plugin add subagent-mcp@subagent-mcp
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.
- 5d ago First seen · 167 lines · 113 tokens per session scan B acfc5714960e
smcp-help is a skill published in the GitHub repository Heretyc/subagent-mcp (3 stars, last pushed today), licensed Apache-2.0. It adds 113 tokens to every session and 1,651 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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