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 znlgis/opengis-skills --skill projgit clone --depth 1 https://github.com/znlgis/opengis-skillsWrote 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/znlgis/opengis-skills/proj)<a href="https://agentmods.dev/skills/znlgis/opengis-skills/proj"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/proj/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/znlgis/opengis-skills/proj"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/proj.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 | $0.00091 | $0.04406 |
| Opus 5.5 | $0.00036 | $0.01762 |
| Sonnet 5.5 | $0.00018 | $0.00881 |
| Haiku 4.5 | $0.00009 | $0.00441 |
Grade A, and why
proj 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.
How it starts
The opening of the file, as written. The whole thing — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.
项目地址： https://github.com/OSGeo/PROJ
官方文档： https://proj.org/
命令行文档： https://proj.org/en/stable/apps/index.html
最新版本： 9.9.0（截至 2026-10，PROJ 版本号即其数据版本）
许可证： MIT
概述
PROJ 是 OSGeo 维护的坐标转换与投影库，也是 GDAL、QGIS、PostGIS 等软件坐标运算的底层引擎。它将坐标系与转换参数存储于 SQLite 数据库 proj.db，并通过命令行工具暴露查询与转换能力：
projinfo— 查询 CRS 定义、查找两坐标系之间的转换操作、导出 WKT/PROJJSONcs2cs— 在任意两个可定义的坐标系之间做坐标转换（含基准面转换）proj— 在同一基准面内做地理坐标与投影坐标的正反算cct— 4D（含时间）坐标转换，输入为点列表projsync— 从 PROJ CDN 下载基准面转换所需的网格文件proj.db— SQLite 数据库，内含 EPSG 数据集与坐标转换记录
环境准备
验证安装
projinfo --version # 输出版本与 proj.db 路径，推荐用于验证
projinfo --searchpaths # 列出资源搜索路径
proj 直接执行会进入交互模式，不作为版本检查命令。
安装方法
Linux (Debian/Ubuntu)
apt-get update
apt-get install proj-bin proj-data
Linux (CentOS/RHEL/Fedora)
yum install proj proj-devel # 或 dnf install proj proj-devel
macOS (Homebrew)
brew install proj
Conda（跨平台）
conda install -c conda-forge proj
Docker
docker run -it osgeo/proj:latest bash
Windows
安装 OSGeo4W 或 conda 发行版；GDAL/QGIS 的 Windows 安装包已内置 PROJ，无需单独安装。
数据与网络配置
# PROJ 9.1 起使用 PROJ_DATA（旧名为 PROJ_LIB，9.1 仍兼容）
export PROJ_DATA=/usr/share/proj
# 允许按需从 CDN 下载转换网格
export PROJ_NETWORK=ON
proj.db 必须可读，库才能正常工作；若报 Cannot find proj.db，请核对 PROJ_DATA 指向的目录。
核心 API/命令
projinfo — CRS 与转换操作查询
查询单个对象（默认按 CRS 解释，-k 可指定 crs|operation|datum|ensemble|ellipsoid）：
# 查询 CRS，输出 PROJ 字符串与 WKT2:2019
projinfo EPSG:4326
# 以 PROJJSON 输出（-q 仅输出字符串本体）
projinfo GDA94 -o PROJJSON -q
# WKT1:GDAL 单行输出
projinfo -o WKT1:GDAL --single-line EPSG:25832
# 按名称识别，给出最接近数据库对象的概率
projinfo --identify EPSG:4326
# 将 2D CRS 提升为 3D
projinfo EPSG:4326 --3d
查找两坐标系之间的坐标转换操作：
# -s 源 CRS，-t 目标 CRS
projinfo -s EPSG:4326 -t EPSG:32650
# 限定作用范围与输出摘要
projinfo -s NAD27 -t EPSG:4269 --area "USA - Missouri" --summary
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 Changed · -11 lines · +9 tokens per session 9614715a7332
- 10d ago First seen · 358 lines · 82 tokens per session scan A 42d1cb70c732
proj is a skill published in the GitHub repository znlgis/opengis-skills (72 stars, last pushed 6d ago), licensed MIT. It adds 91 tokens to every session and 4,406 once invoked, about $0.0004 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 2026-10-16.
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