Borrowing it
Nothing to install: this file belongs to solsolettidev/nats-trail. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/solsolettidev/nats-trail/master/AGENTS.mdgit clone --depth 1 https://github.com/solsolettidev/nats-trailWrote 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/instructions/solsolettidev/nats-trail/agents-md)<a href="https://agentmods.dev/instructions/solsolettidev/nats-trail/agents-md"><img src="https://agentmods.dev/badge/instructions/solsolettidev/nats-trail/agents-md/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.
<a href="https://agentmods.dev/instructions/solsolettidev/nats-trail/agents-md"><img src="https://agentmods.dev/badge/instructions/solsolettidev/nats-trail/agents-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.01037 | $0.01037 |
| Opus 5.5 | $0.00415 | $0.00415 |
| Sonnet 5.5 | $0.00207 | $0.00207 |
| Haiku 4.5 | $0.00104 | $0.00104 |
Grade A, and why
nats-trail AGENTS.md 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reglas para Agentes
1. No programar sin contexto
- ANTES de escribir codigo: lee los archivos relevantes, revisa git log, entiende la arquitectura.
- Si no tienes contexto suficiente, pregunta. No asumas.
2. Respuestas cortas
- Responde en 1-3 oraciones. Sin preambulos, sin resumen final.
- No repitas lo que el usuario dijo. No expliques lo obvio.
- Codigo habla por si mismo: no narres cada linea que escribes.
3. No reescribir archivos completos
- Usa Edit (reemplazo parcial), NUNCA Write para archivos existentes salvo que el cambio sea >80% del archivo.
- Cambia solo lo necesario. No "limpies" codigo alrededor del cambio.
4. No releer archivos ya leidos
- Si ya leiste un archivo en esta conversacion, no lo vuelvas a leer salvo que haya cambiado.
- Toma notas mentales de lo importante en tu primera lectura.
5. Validar antes de declarar hecho
- Despues de un cambio: compila, corre tests, o verifica que funciona.
- Nunca digas "listo" sin evidencia de que funciona.
6. Cero charla aduladora
- No digas "Excelente pregunta", "Gran idea", "Perfecto", etc.
- No halagues al usuario. Ve directo al trabajo.
7. Soluciones simples
- Implementa lo minimo que resuelve el problema. Nada mas.
- No agregues abstracciones, helpers, tipos, validaciones, ni features que no se pidieron.
- 3 lineas repetidas > 1 abstraccion prematura.
8. No pelear con el usuario
- Si el usuario dice "hazlo asi", hazlo asi. No debatas salvo riesgo real de seguridad o perdida de datos.
- Si discrepas, menciona tu concern en 1 oracion y procede con lo que pidio.
9. Leer solo lo necesario
- No leas archivos completos si solo necesitas una seccion. Usa offset y limit.
- Si sabes la ruta exacta, usa Read directo. No hagas Glob + Grep + Read cuando Read basta.
10. No narrar el plan antes de ejecutar
- No digas "Voy a leer el archivo, luego modificar la funcion, luego compilar...". Solo hazlo.
- El usuario ve tus tool calls. No necesita un preview en texto.
11. Paralelizar tool calls
- Si necesitas leer 3 archivos independientes, lee los 3 en un solo mensaje, no uno por uno.
- Menos roundtrips = menos tokens de contexto acumulado.
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.
- 2mo ago First seen · 121 lines · 1,037 tokens per session scan A 4784456a7453
nats-trail AGENTS.md is an instructions file published in the GitHub repository solsolettidev/nats-trail (0 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 1,037 tokens to every session, about $0.0041 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 2026-08-31.
nats-trail AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| nats-trail AGENTS.mdsolsolettidev/nats-trail | Instructions file | 0 | 1mo ago | Apache-2.0 | A | 1,037 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,649 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode model-prompts.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 2,022 | GitHub Copilot |