SkillsBench is a benchmark for measuring how effectively AI agents use modular skills—folders containing instructions, scripts, and resources—to complete specialized tasks. It helps researchers and developers evaluate both skill quality and agent behavior, including tasks that require combining multiple skills. The catalogue’s skills and instructions are evaluated as part of this workflow.
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 skills add benchflow-ai/skillsbench --skill civ6libgit clone --depth 1 https://github.com/benchflow-ai/skillsbenchWrote 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/skills/benchflow-ai/skillsbench/civ6lib)<a href="https://agentmods.dev/skills/benchflow-ai/skillsbench/civ6lib"><img src="https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/civ6lib/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/skills/benchflow-ai/skillsbench/civ6lib"><img src="https://agentmods.dev/badge/skills/benchflow-ai/skillsbench/civ6lib.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00032 | $0.01747 |
| Opus 5 | $0.00016 | $0.00873 |
| Sonnet 5 | $0.00006 | $0.00349 |
| Haiku 4.5 | $0.00003 | $0.00175 |
Grade A, and why
civ6lib 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 5d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- civ6lib — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 251 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Understanding Civ6 District Mechanics
Complete reference for Civilization 6 district placement and adjacency bonus systems (Gathering Storm).
Modules
- placement_rules.py - District placement validation rules
- adjacency_rules.py - Adjacency bonus calculation engine
For hex grid utilities (neighbors, distance, etc.), use the hex-grid-spatial skill or import from src.hex_utils.
Usage
from civ6lib import (
# Placement
DistrictType, Tile, PlacementRules, get_placement_rules,
validate_district_count, validate_district_uniqueness,
# Adjacency
AdjacencyCalculator, get_adjacency_calculator,
)
# Validate a placement
rules = get_placement_rules(tiles, city_center=(21, 13), population=7)
result = rules.validate_placement(DistrictType.CAMPUS, 21, 14, {})
if result.valid:
print("Valid placement!")
# Calculate adjacency bonus
calculator = get_adjacency_calculator(tiles)
total, per_district = calculator.calculate_total_adjacency(placements)
Part 1: Placement Rules
City Placement Rules
Minimum Distance Between Cities
| Condition | Min Distance | Tiles Between |
|---|---|---|
| Same landmass | 4 tiles | 3 tiles |
| Different landmasses | 3 tiles | 2 tiles |
Invalid Settlement Tiles
- Water (Coast, Ocean, Lake)
- Mountains
- Natural Wonders
Note on City Center Features
Settling a City Center on a tile with Geothermal Fissure or Luxury/Strategic Resources preserves them (they remain and provide adjacency bonuses to nearby districts). Districts cannot be placed on these tiles.
District Placement Rules
Universal Rules (All Districts)
| Rule | Description |
|---|---|
| Distance | Within 3 tiles of City Center |
| Mountains | Cannot place |
| Natural Wonders | Cannot place |
| Strategic Resources | Cannot place (Iron, Horses, Niter, Coal, Oil, Aluminum, Uranium) |
| Luxury Resources | Cannot place |
| Existing District | Cannot place on occupied tile |
| Bonus Resources | CAN place (resource destroyed) |
| Woods/Rainforest/Marsh | CAN place (feature destroyed) |
What ships with it
3 files 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.
- 5d ago First seen · 251 lines · 32 tokens per session scan A 488097528b9d
civ6lib is a skill published in the GitHub repository benchflow-ai/skillsbench (1,754 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 32 tokens to every session and 1,747 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 2026-09-03.
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