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 obsfx/trekker --skill find-duplicatesgit clone --depth 1 https://github.com/obsfx/trekkerWrote 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/obsfx/trekker/find-duplicates)<a href="https://agentmods.dev/skills/obsfx/trekker/find-duplicates"><img src="https://agentmods.dev/badge/skills/obsfx/trekker/find-duplicates/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/obsfx/trekker/find-duplicates"><img src="https://agentmods.dev/badge/skills/obsfx/trekker/find-duplicates.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 | $0.00021 | $0.00403 |
| Opus 5.5 | $0.00008 | $0.00161 |
| Sonnet 5.5 | $0.00004 | $0.00081 |
| Haiku 4.5 | $0.00002 | $0.00040 |
Grade A, and why
find-duplicates 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 yesterday.
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:
- find-duplicates — 100% identical, 6 lines differ
What it actually says
CRITICAL: Search Before Creating ANY Task
You MUST search before creating any task.
trekker search "<task description you're about to create>"
When to Use (MANDATORY)
- BEFORE creating ANY new task - non-negotiable
- User reports issue - check if already tracked
- Grooming backlog - find consolidation opportunities
- Starting new feature - find related past work
IMPORTANT: FTS5 Search Tips
Search uses FTS5 (not semantic). Use single keywords for best recall:
- Multi-word queries require ALL words present (AND logic = fewer results)
- Search multiple times with different keywords
Commands
# Search with single keywords - try the most distinctive word
trekker search "authentication"
trekker search "login"
# Search specific type
trekker search "timeout" --type task
# Search by status
trekker search "performance" --status todo
MANDATORY Workflow
1. SEARCH: trekker search "<single keyword>" (try 2-3 keywords separately)
2. REVIEW results
3. DECIDE:
- Found exact match: DO NOT create, update the existing task
- Found related work: review carefully, it may need a link
- No results: safe to create a new task
4. CREATE in Trekker FIRST (if no duplicate)
5. MIRROR to TodoWrite after
Anti-Patterns (DO NOT)
- Creating task without searching first
- Ignoring search results
- Creating in TodoWrite without checking Trekker first
Trekker is Primary
Always:
- Check Trekker for duplicates FIRST
- Create in Trekker FIRST
- Then mirror to TodoWrite
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.
- yesterday First seen · 66 lines · 21 tokens per session scan A 5d9a4f345a7f
find-duplicates is a skill published in the GitHub repository obsfx/trekker (84 stars, last pushed yesterday), licensed MIT. It adds 21 tokens to every session and 403 once invoked, about $0.0001 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 2026-10-25.
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