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 getaero-io/gtm-eng-skills --skill niche-signal-discoverygit clone --depth 1 https://github.com/getaero-io/gtm-eng-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/getaero-io/gtm-eng-skills/niche-signal-discovery)<a href="https://agentmods.dev/skills/getaero-io/gtm-eng-skills/niche-signal-discovery"><img src="https://agentmods.dev/badge/skills/getaero-io/gtm-eng-skills/niche-signal-discovery/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/getaero-io/gtm-eng-skills/niche-signal-discovery"><img src="https://agentmods.dev/badge/skills/getaero-io/gtm-eng-skills/niche-signal-discovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00089 | $0.00352 |
| Opus 5.5 | $0.00036 | $0.00141 |
| Sonnet 5.5 | $0.00018 | $0.00070 |
| Haiku 4.5 | $0.00009 | $0.00035 |
Grade A, and why
niche-signal-discovery scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
niche-signal-discovery (renamed to deepline-scoring)
Quick Start
npm install -g deepline
deepline -h
This skill was renamed. niche-signal-discovery is a temporary alias kept so existing prompts, scripts, and saved commands keep working. It will be removed.
What to do
Load the deepline-scoring skill and follow it for this request. Do not answer from this file; it contains no instructions of its own.
If the skill loader supports names, invoke deepline-scoring. Otherwise read the entrypoint directly, trying these roots in order and using the first that exists:
for candidate in \
"$PWD/.skills/deepline-scoring" \
"$HOME/.claude/skills/deepline-scoring" \
"$HOME/.agents/skills/deepline-scoring"; do
[ -d "$candidate" ] && { echo "$candidate/SKILL.md"; break; }
done
Then tell the user once, in a single line, that /niche-signal-discovery is now /deepline-scoring, and continue with the actual request.
What ships with it
1 file 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.
- 11d ago Changed · -1 lines 813917533dfd
- 12d ago Changed 0df42e7f2037
- 25d ago Changed · -3 lines cc9567476d88
- 1mo ago Changed · -43 lines · +30 tokens per session a8004b3d7ca3
- 1mo ago Changed · -241 lines · -76 tokens per session f1c2e437a586
- 1mo ago First seen · 322 lines · 135 tokens per session scan A bb0c88382b67
niche-signal-discovery is a skill published in the GitHub repository getaero-io/gtm-eng-skills (71 stars, last pushed today), licensed MIT. It adds 89 tokens to every session and 352 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 2026-08-30.
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