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 SteadfastAsArt/geoscience-skills --skill poochgit clone --depth 1 https://github.com/SteadfastAsArt/geoscience-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/steadfastasart/geoscience-skills/pooch)<a href="https://agentmods.dev/skills/steadfastasart/geoscience-skills/pooch"><img src="https://agentmods.dev/badge/skills/steadfastasart/geoscience-skills/pooch/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/steadfastasart/geoscience-skills/pooch"><img src="https://agentmods.dev/badge/skills/steadfastasart/geoscience-skills/pooch.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 | $0.00112 | $0.01273 |
| Opus 5.5 | $0.00045 | $0.00509 |
| Sonnet 5.5 | $0.00022 | $0.00255 |
| Haiku 4.5 | $0.00011 | $0.00127 |
Grade A, and why
pooch scanned grade A with 1 finding 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 1mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| **urllib/requests** | Simple one-off downloads, custom HTTP logic | No caching, no hash verification | How it starts
The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Pooch - Data File Fetching
Quick Reference
import pooch
# Download single file
file_path = pooch.retrieve(
url="https://example.com/data.csv",
known_hash="sha256:abc123...", # None to skip verification
fname="data.csv",
path=pooch.os_cache("myproject")
)
# Create registry for multiple files
REGISTRY = pooch.create(
path=pooch.os_cache("myproject"),
base_url="https://example.com/data/",
registry={"data.csv": "sha256:abc123...", "model.nc": "sha256:def456..."}
)
data_file = REGISTRY.fetch("data.csv")
# Generate hash for local file
file_hash = pooch.file_hash("/path/to/file.csv")
Key Functions
| Function | Purpose |
|---|---|
pooch.retrieve() |
Download single file with caching |
pooch.create() |
Create custom data registry |
pooch.file_hash() |
Generate SHA256/MD5 hash of file |
pooch.os_cache() |
Get OS-specific cache directory |
Essential Operations
Download Files
# With hash verification
file_path = pooch.retrieve(
url="https://example.com/data.nc",
known_hash="sha256:abc123..."
)
# Without verification (development only)
file_path = pooch.retrieve(url="https://example.com/data.nc", known_hash=None)
# From Zenodo DOI
file_path = pooch.retrieve(
url="doi:10.5281/zenodo.1234567/data.zip",
known_hash="sha256:abc123..."
)
Extract Archives
# ZIP archive
files = pooch.retrieve(
url="https://example.com/data.zip",
known_hash="sha256:abc123...",
processor=pooch.Unzip()
)
# Decompress single gzip file
file_path = pooch.retrieve(
url="https://example.com/data.csv.gz",
known_hash="sha256:abc123...",
processor=pooch.Decompress(name="data.csv")
)
Additional Options
# Progress bar for large downloads
file_path = pooch.retrieve(url=url, known_hash=hash, progressbar=True)
# HTTP authentication
file_path = pooch.retrieve(
url="https://example.com/protected/data.csv",
known_hash=None,
downloader=pooch.HTTPDownloader(auth=("user", "pass"))
)
What ships with it
2 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.
- 1mo ago Changed · +2 lines · +1 tokens per session 4592936ad4f4
- 2mo ago First seen · 167 lines · 111 tokens per session scan A 177965621f36
pooch is a skill published in the GitHub repository SteadfastAsArt/geoscience-skills (73 stars, last pushed 1mo ago), licensed MIT. It adds 112 tokens to every session and 1,273 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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