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 AmineDjeghri/personal-os-setup --skill github-actions-trigger-gotchasgit clone --depth 1 https://github.com/AmineDjeghri/personal-os-setupWrote 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/aminedjeghri/personal-os-setup/github-actions-trigger-gotchas)<a href="https://agentmods.dev/skills/aminedjeghri/personal-os-setup/github-actions-trigger-gotchas"><img src="https://agentmods.dev/badge/skills/aminedjeghri/personal-os-setup/github-actions-trigger-gotchas/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/aminedjeghri/personal-os-setup/github-actions-trigger-gotchas"><img src="https://agentmods.dev/badge/skills/aminedjeghri/personal-os-setup/github-actions-trigger-gotchas.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 | $0.00020 | $0.00929 |
| Opus 5.5 | $0.00008 | $0.00372 |
| Sonnet 5.5 | $0.00004 | $0.00186 |
| Haiku 4.5 | $0.00002 | $0.00093 |
Grade A, and why
github-actions-trigger-gotchas 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 18d 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 — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Actions trigger & scheduling gotchas
False runs on Renovate/branch pushes, duplicated checks, jobs cancelled by concurrency, or a step that silently never executes. Diagnose with real evidence before editing YAML:
gh run list --branch <branch> --limit 20 --json workflowName,event,headBranch,createdAt,conclusion
gh api repos/O/R/actions/runs/<run-id>/jobs --jq '.jobs[]|"\(.name) \(.conclusion)"'
gh api repos/O/R/actions/runs/<run-id>/jobs --jq '.jobs[]|select(.name|test("X"))|.steps[]|"\(.number) \(.name) -> \(.conclusion)"'
gh pr checks <n> # duplicate identical check names = two runs (push + pull_request)
gh api repos/O/R/branches/main/protection ; gh api repos/O/R/rulesets # what actually gates merges
1. push + paths fires for unrelated diffs after a force-push
On a rebase/force-push (Renovate does this), GitHub evaluates the push path filter against everything the branch
gained relative to its previous tip — including files main picked up since the branch was created. Symptom: an
add-on CI fires on a renovate/* push whose PR only touches one unrelated folder; correlation is exact (only the
folders added to main after the branch was cut fire).
Fix: scope the push trigger to the branch that matters (push: branches: [main]), keep validation on
pull_request (whose paths uses the PR diff, correctly). Do not add paths-ignore hacks.
Same pattern causes double CI on every PR (push + pull_request both match). Pick one trigger — usually drop
push unless a push without a PR must be validated. Check first whether protection/rulesets require those checks
(often none).
2. Job-level concurrency cancels a run's OWN sibling jobs
jobs.<id>.concurrency with the default queue holds one running + one pending per group: each newly queued job
cancels the pending one (cancel-in-progress: false only protects the running job). With N jobs starting
together (cron, fan-out), all but ~2 get cancelled every run — worse than the race you were fixing.
queue: max (up to 100 pending) fixes it, but an unsupported key invalidates the whole workflow file (all runs stop),
so for a critical job prefer mechanisms with no new syntax.
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.
- 18d ago Changed · +3 lines 4f8f2ecf3dbf
- 27d ago First seen · 61 lines · 20 tokens per session scan A e2b5b04b1289
github-actions-trigger-gotchas is a skill published in the GitHub repository AmineDjeghri/personal-os-setup (654 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 929 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 2026-09-19.
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