gemini-router

name	gemini-router
description	Delegate a task to Gemini CLI (`gemini -p`). Preset for long-context reading, research, translation review, and adversarial second-opinion passes. The 1M+ context window is its key affordance.
version	1.0.0
author	Hermes Agent
license	MIT
metadata	{"hermes":{"tags":["routing","gemini","research","translation","long-context"],"related_skills":["claude-code-router","codex-router"]}}

gemini-router

When to use: tasks whose input is huge (entire codebase audit, full paper PDF, long transcripts) OR tasks that need an independent third opinion distinct from Anthropic + OpenAI model families (per Regulations § Triple-Heterogeneous Review).

Inputs

• task — prompt
• model — leave unset to use Gemini CLI's own default. Explicit gemini-3.1-pro returns 404 from this account; the CLI auto-resolves to a working alias when -m is omitted.
• working_dir — optional; if set, Gemini's tool calls run from there
• effort — low / medium / high, defaults to medium
• timeout_seconds — defaults to 1500

Invocation recipe

The Gemini CLI has no --effort flag (verified gemini --help 0.39.1). Use --approval-mode plan to keep the run read-only when auditing, otherwise omit. Always </dev/null for cron-safety.

TASK="${1:?task required}"
WORKING_DIR="${2:-$PWD}"
TIMEOUT="${TIMEOUT_SECONDS:-1500}"
APPROVAL="${APPROVAL_MODE:-default}"   # default | auto_edit | yolo | plan

cd "$WORKING_DIR" 2>/dev/null

# Default invocation: omit -m so Gemini CLI uses its own default.
# Pass MODEL=<name> only if you have a model alias confirmed to work.
GEMINI_M_ARG=""
[ -n "${MODEL:-}" ] && GEMINI_M_ARG="--model $MODEL"

timeout "$TIMEOUT" gemini -p "$TASK" $GEMINI_M_ARG \
  --approval-mode "$APPROVAL" </dev/null

Output contract

• VERDICT: <pass|fail|flag|ambiguous> on the final line
• Optional EVIDENCE: <one-paragraph> for review tasks

When to choose this over the others

Need	Pick
Cross-check a translation for fluency	gemini-router
Read 200k-token codebase to find a pattern	gemini-router
Adversarial third pass on a Codex-reviewed PR	gemini-router
Author code	claude-code-router
Run + fix tests	codex-router

Anti-patterns

• ❌ Do NOT use Gemini for code authoring — its tool-use loop is weaker than Claude Code / Codex on this workload
• ❌ Do NOT remove </dev/null