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spec-driven-development-template GEMINI.md

Project instructions for a spec-driven development template: a workflow where written requirements and an agreed plan come before code. It also explains where code or a separate spec folder should live.

In plain words
What is it for?
Planning and carrying out projects with written specifications, including projects kept outside the template repository.
Why use it?
It prevents coding from starting before the requirements and plan are approved and consistent.

Instructions file for Gemini CLI

15 +1 2d ago A scan 410 tokens original MIT
View the source file juanklagos/spec-driven-development-template
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.

agentmods
npx agentmods add instructions/juanklagos/spec-driven-development-template/gemini-md
Clone the repo
git clone --depth 1 https://github.com/juanklagos/spec-driven-development-template

Made for: Gemini CLI.

Per session 410 This file is loaded in full into every session.
When invoked 410 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00410 $0.00410
Opus 5 $0.00205 $0.00205
Sonnet 5 $0.00082 $0.00082
Haiku 4.5 $0.00041 $0.00041

Measured 2d ago against content hash c488d5b41e75, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spec-driven-development-template GEMINI.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 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.

GEMINI.md · 34 lines

What it actually says

Gemini Operating Rules for this Template

Canonical source:

  • template-context/core-instructions/AGENT_OPERATING_SYSTEM.md
  • sdd.policy.yaml

Hard stop:

  • No code before approved spec and consistent plan.
  • No hay código sin spec aprobada y plan consistente.

Execution workspace:

  • Inside THIS template repository, put runnable code under www/<project-name>/.
  • For a project that already exists somewhere else — the common case — install the compact spec/ sidecar in it and leave the code where it is. That is the recommended default workspace for real work.
  • Dentro de ESTA plantilla, el código ejecutable va en www/<nombre-proyecto>/.
  • Para un proyecto que ya existe en otro sitio —el caso normal— instala el sidecar compacto spec/ y deja el código donde está. Ese es el espacio de trabajo recomendado por defecto para el trabajo real.
  • The user may choose another target path.
  • If the target project lives inside this template, keep it under www/.
  • For real external projects, install the compact spec/ sidecar and keep code in the project root.
  • Para proyectos reales externos, instala el sidecar compacto spec/ y mantén el código en la raíz del proyecto.

Decision log:

  • Record a decision in bitacora/decisiones/YYYY-MM-DD-<slug>.md (use /sdd:decision) when it chose between real alternatives, when it will be expensive to reverse, or when a future reader would ask "why is it like this?".
  • Registra una decisión cuando eligió entre alternativas reales, cuando revertirla será caro, o cuando alguien preguntaría después "¿por qué es así?".
  • Every record includes a "when to revisit" section, and every rationale points at a source. Never invent rationale or dates.

Session contract:

  • objective
  • active_spec
  • changes
  • validation
  • risks
  • decision_recorded
  • next_step
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 · 34 lines · 410 tokens per session scan A c488d5b41e75

Subscribe to this mod's changes

spec-driven-development-template GEMINI.md is an instructions file published in the GitHub repository juanklagos/spec-driven-development-template (15 stars, last pushed 2d ago), licensed MIT. It adds 410 tokens to every session, about $0.0020 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.

Developer Workflowai-agentsai-developmentgithub-templateproject-templatesoftware-architecture
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