mastermind-instance

mastermind-instance is a skill for Claude Code, Codex from monoes/monomind. It costs 31 tokens per session (2,483 once invoked), scanned A, original, Apache-2.0.

A tool for viewing and changing settings shared by all organisations in an agent system, including scheduler heartbeats. A heartbeat is a periodic check that lets the system notice and process work.

In plain words
What is it for?
Use it to view instance settings, inspect health, manage heartbeat agents and change system configuration.
Why use it?
It provides one place to inspect system health and control scheduled checks across organisations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to view instance settings, inspect health, manage heartbeat agents and change system configuration.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/monoes/monomind/mastermind-instance
Install

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.

Any agent
npx skills add monoes/monomind --skill mastermind-instance
Clone the repo
git clone --depth 1 https://github.com/monoes/monomind

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for mastermind-instance

README.md
[![agentmods](https://agentmods.dev/badge/skills/monoes/monomind/mastermind-instance/github.svg)](https://agentmods.dev/skills/monoes/monomind/mastermind-instance)
Your own site
<a href="https://agentmods.dev/skills/monoes/monomind/mastermind-instance"><img src="https://agentmods.dev/badge/skills/monoes/monomind/mastermind-instance/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for mastermind-instance

Your own site · 80×15
<a href="https://agentmods.dev/skills/monoes/monomind/mastermind-instance"><img src="https://agentmods.dev/badge/skills/monoes/monomind/mastermind-instance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,483 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00031 $0.02483
Opus 5.5 $0.00012 $0.00993
Sonnet 5.5 $0.00006 $0.00497
Haiku 4.5 $0.00003 $0.00248

Measured 2d ago against content hash f59fdd79ecf5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mastermind-instance 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.

.agents/skills/mastermind-instance/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mastermind Instance

This skill is invoked directly via /mastermind-instance.


Inputs

  • brain_context: BRAIN CONTEXT block (injected by command, or loaded below if standalone)
  • action: show | heartbeats | toggle-heartbeat | set | health
  • agent_id: agent id (required for toggle-heartbeat)
  • org_name: org filter (optional)
  • key: config key to set (for set action)
  • value: value to set
  • caller: command | master

Step 0 — Brain Load (standalone only)

If caller is not "command", load brain context following mastermind-protocol/SKILL.md Brain Load Procedure with namespace: ops.


Step 1 — Load Instance Config

instanceFile=".monomind/instance.json"
if [ ! -f "$instanceFile" ]; then
  cat > "$instanceFile" <<'EOF'
{
  "version": "1.0",
  "scheduler": {
    "enabled": true,
    "default_heartbeat_interval": 900,
    "max_concurrent_heartbeats": 4
  },
  "limits": {
    "max_orgs": 20,
    "max_agents_per_org": 50,
    "max_tokens_per_day": 10000000
  },
  "heartbeat_agents": []
}
EOF
fi

Step 2 — Execute Action

show (default)

Display global instance configuration:

echo "MONOMIND INSTANCE SETTINGS"
echo "──────────────────────────────────────────"
jq -r '
  "  Version:                 \(.version // "1.0")",
  "  Scheduler enabled:       \(.scheduler.enabled // true)",
  "  Heartbeat interval:      \(.scheduler.default_heartbeat_interval // 900)s",
  "  Max concurrent beats:    \(.scheduler.max_concurrent_heartbeats // 4)",
  "",
  "LIMITS",
  "  Max orgs:                \(.limits.max_orgs // 20)",
  "  Max agents/org:          \(.limits.max_agents_per_org // 50)",
  "  Max tokens/day:          \(.limits.max_tokens_per_day // 10000000)"
' "$instanceFile"

echo ""
echo "ORGS"
orgs=$(ls .monomind/orgs/*.json 2>/dev/null | grep -vE -- '-approvals|-state|-activity|-goals|-routines|-projects|-members|-issues|-workspaces|-worktrees|-environments|-plugins|-adapters|-bootstrap|-threads|-budgets|-project-workspaces|-approval-comments' | wc -l | tr -d ' ')
echo "  Active orgs: $orgs"

Read the full file on GitHub · 239 lines

Changes

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.

  1. 2d ago First seen · 239 lines · 31 tokens per session scan A f59fdd79ecf5

Subscribe to this mod's changes

mastermind-instance is a skill published in the GitHub repository monoes/monomind (23 stars, last pushed 2d ago), licensed Apache-2.0. It adds 31 tokens to every session and 2,483 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-26.

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