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 Stijnman/grok-custom-skills --skill flip-pipeline-operatorgit clone --depth 1 https://github.com/Stijnman/grok-custom-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/stijnman/grok-custom-skills/flip-pipeline-operator)<a href="https://agentmods.dev/skills/stijnman/grok-custom-skills/flip-pipeline-operator"><img src="https://agentmods.dev/badge/skills/stijnman/grok-custom-skills/flip-pipeline-operator/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/stijnman/grok-custom-skills/flip-pipeline-operator"><img src="https://agentmods.dev/badge/skills/stijnman/grok-custom-skills/flip-pipeline-operator.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 | $0.00070 | $0.00289 |
| Opus 5.5 | $0.00028 | $0.00116 |
| Sonnet 5.5 | $0.00014 | $0.00058 |
| Haiku 4.5 | $0.00007 | $0.00029 |
Grade A, and why
flip-pipeline-operator 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 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.
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.
What it actually says
Flip Pipeline Operator
Version: 1.1.0 (2026-09-09)
When to use
User wants underpriced second-hand deals in BE/NL/US scored after fees and shipping.
Do this
- Confirm query, budget, region (
bedefault), min ROI, private vs business eBay seller. - Source first from Adevinta JSON — GET https://www.2dehands.be/lrp/api/search — not HTML scrape.
- Score with scorer.py using 2026 tables (US 13.6%+$0.40, EEA private 0%, EEA business ~11%+1.9%+€0.35, bpost pickup €5.40/0-2kg).
- Label comps as proxy unless Marketplace Insights / Terapeak sold data is present. Finding API died 2025-02-04.
- Never scrape Facebook Marketplace or OfferUp.
- Persist CSV + push Stijnman/flip-pipeline.
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 First seen · 20 lines · 70 tokens per session scan A bbbc51cd6ba5
flip-pipeline-operator is a skill published in the GitHub repository Stijnman/grok-custom-skills (14 stars, last pushed 6d ago), licensed MIT. It adds 70 tokens to every session and 289 once invoked, about $0.0003 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 2026-09-10.
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