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/sipyourdrink-ltd/bernstein/bernstein-agentsnpx skills add sipyourdrink-ltd/bernstein --skill bernstein-agentsgit clone --depth 1 https://github.com/sipyourdrink-ltd/bernsteinWhat 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 | $0.00049 | $0.00450 |
| Opus 5 | $0.00024 | $0.00225 |
| Sonnet 5 | $0.00010 | $0.00090 |
| Haiku 4.5 | $0.00005 | $0.00045 |
Grade A, and why
bernstein-agents 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 yesterday.
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
Bernstein Agent Management
Inspect, monitor, and control active Bernstein agents.
When to Use
- User asks "what agents are running?" or "show me the agents"
- User wants to see what a specific agent is working on
- User says "kill that agent" or "stop the backend agent"
- User asks "why is that agent stuck?" or wants to inspect agent output
- User wants to see agent logs
Instructions
List agents
- Run
scripts/agents.sh listto get all active agents. - Present them clearly:
## Active Agents (3)
| Agent | Role | Model | Status | Task | Runtime | Cost |
|-------|------|-------|--------|------|---------|------|
| ses-a1b2 | backend | claude-sonnet-4 | alive | TASK-042: Fix auth | 4m 12s | $0.32 |
| ses-c3d4 | qa | gpt-4.1 | alive | TASK-043: Write tests | 2m 45s | $0.18 |
| ses-e5f6 | frontend | claude-sonnet-4 | stalled | TASK-044: Update UI | 8m 03s | $0.51 |
Inspect agent
- To see what an agent is doing:
scripts/agents.sh logs <session_id> - Show the last ~20 lines of output.
Kill agent
- To kill a stalled or misbehaving agent:
scripts/agents.sh kill <session_id> - Confirm: "Agent ses-e5f6 terminated. Task TASK-044 returned to open queue."
Stall detection
- If any agent shows
stalledstatus, proactively suggest killing it. - An agent is stalled if it hasn't sent a heartbeat in >60 seconds.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday First seen · 52 lines · 49 tokens per session scan A d3607e5ccf6b
bernstein-agents is a skill published in the GitHub repository sipyourdrink-ltd/bernstein (1,038 stars, last pushed today), licensed Apache-2.0. It adds 49 tokens to every session and 450 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
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