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 instructions/jacebenson/jsn/agents-mdgit clone --depth 1 https://github.com/jacebenson/jsnWhat 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 | $0.01231 | $0.01231 |
| Opus 5 | $0.00616 | $0.00616 |
| Sonnet 5 | $0.00246 | $0.00246 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
jsn AGENTS.md scanned grade A 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 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- `test/` — `*.test.js`, `node:test` + `spawnSync` for CLI-level tests The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 96 lines · 1,231 tokens per session scan A 139db291251f
jsn AGENTS.md is an instructions file published in the GitHub repository jacebenson/jsn (10 stars, last pushed 3d ago), with no licence file. It adds 1,231 tokens to every session, about $0.0062 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
serac AGENTS.md
Instructions for serac-labs/serac, covering agents.md, commits and pr titles, style guide, general principles and destructuring.
servicenow-api AGENTS.md
Instructions for Knuckles-Team/servicenow-api, covering agents.md, tech stack & architecture, architecture diagram, workflow diagram and commands (run these exactly).
now-sdk-ext-mcp CLAUDE.md
Instructions for sonisoft-cnanda/now-sdk-ext-mcp, covering now-sdk-ext-mcp, project overview, architecture, directory structure and sibling projects.
now-sdk-ext-mcp AGENTS.md
Instructions for sonisoft-cnanda/now-sdk-ext-mcp, covering agents.md, what this repository is, hard rules, 1. never write to stdout and 3. adding a tool touches two files, and nothing enforces it.
servicenow-api CLAUDE.md
Instructions for Knuckles-Team/servicenow-api: Guidance for Claude Code (claude.ai/code) when working in this repository.
servicenow-platform-mcp AGENTS.md
Instructions for Xerrion/servicenow-platform-mcp, covering agents.md - servicenow-platform-mcp, 📋 project overview, dependencies, 🚀 setup and 🔧 lint / format / type-check.