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 moonlight-lupin/agent-skills --skill source-trackergit clone --depth 1 https://github.com/moonlight-lupin/agent-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/moonlight-lupin/agent-skills/source-tracker)<a href="https://agentmods.dev/skills/moonlight-lupin/agent-skills/source-tracker"><img src="https://agentmods.dev/badge/skills/moonlight-lupin/agent-skills/source-tracker.svg" alt="Measured on agentmods" 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 | $0.00045 | $0.02765 |
| Opus 5 | $0.00023 | $0.01383 |
| Sonnet 5 | $0.00009 | $0.00553 |
| Haiku 4.5 | $0.00005 | $0.00277 |
Grade A, and why
source-tracker 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 7d 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 — 359 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Source Tracker
Overview
Source Tracker is a small persistent citation manager for research workflows.
Research sources often scatter across browser tabs, notes, temporary files, and
separate sessions. URLs get cited once and then disappear, duplicates accumulate
as http/https or www variants, and bibliography export becomes a manual
cleanup job at the end.
This skill fixes that by keeping a portable SQLite database of every cited URL: add sources as soon as they are cited, tag them by topic, deduplicate URL variants, re-check stale links, and export bibliographies in Markdown, BibTeX, CSV, or JSON.
The database path is configurable with --db-path or the
SOURCE_TRACKER_DB environment variable. If neither is set, commands use
./sources.db relative to the current working directory.
Quick Start
From the skill directory:
python scripts/source_db.py add --url URL --topic TOPIC
A practical example:
python scripts/source_db.py add \
--url "https://example.org/report" \
--topic "battery supply chain" \
--title "Example Battery Report" \
--notes "Baseline market-size estimate" \
--type report
Use a persistent project database when research spans folders or sessions:
export SOURCE_TRACKER_DB="$HOME/research/sources.db"
python scripts/source_db.py add --url "https://example.org" --topic "market scan"
Or pass the path explicitly:
python scripts/source_db.py --db-path "$HOME/research/sources.db" add --url "https://example.org" --topic "market scan"
Workflows
1. Add Sources
Add every URL at the moment it becomes a cited source. Always include a topic. Use a source type when the material is not a normal web page.
python scripts/source_db.py add \
--url "https://example.com/article#section" \
--topic "ai regulation" \
--title "Example Article" \
--notes "Defines the enforcement timeline" \
--type news \
--session-id "research-2026-07-06"
If --title is omitted, the script tries a best-effort GET request and parses
<title>. If that fetch fails, the source is still added with a blank title.
What ships with it
6 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.
- 7d ago First seen · 359 lines · 45 tokens per session scan A 8acd14c78232
source-tracker is a skill published in the GitHub repository moonlight-lupin/agent-skills (53 stars, last pushed today), licensed MIT. It adds 45 tokens to every session and 2,765 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 2026-08-30.
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