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 mr-daedalium/ostack-saas --skill browsegit clone --depth 1 https://github.com/mr-daedalium/ostack-saasWrote 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/mr-daedalium/ostack-saas/browse)<a href="https://agentmods.dev/skills/mr-daedalium/ostack-saas/browse"><img src="https://agentmods.dev/badge/skills/mr-daedalium/ostack-saas/browse/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/mr-daedalium/ostack-saas/browse"><img src="https://agentmods.dev/badge/skills/mr-daedalium/ostack-saas/browse.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 | $0.00115 | $0.05419 |
| Opus 5 | $0.00057 | $0.02710 |
| Sonnet 5 | $0.00023 | $0.01084 |
| Haiku 4.5 | $0.00012 | $0.00542 |
Grade C, and why
browse scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
3. If `bun` is not installed: `curl -fsSL https://bun.sh/install | bash` Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
3. If `bun` is not installed: `curl -fsSL https://bun.sh/install | bash` This is a copy
89% identical to ostack — 276 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 469 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Preamble (run first)
_UPD=$(~/.claude/skills/ostack/bin/ostack-update-check 2>/dev/null || .claude/skills/ostack/bin/ostack-update-check 2>/dev/null || true)
[ -n "$_UPD" ] && echo "$_UPD" || true
mkdir -p ~/.ostack/sessions
touch ~/.ostack/sessions/"$PPID"
_SESSIONS=$(find ~/.ostack/sessions -mmin -120 -type f 2>/dev/null | wc -l | tr -d ' ')
find ~/.ostack/sessions -mmin +120 -type f -delete 2>/dev/null || true
_CONTRIB=$(~/.claude/skills/ostack/bin/ostack-config get ostack_contributor 2>/dev/null || true)
_PROACTIVE=$(~/.claude/skills/ostack/bin/ostack-config get proactive 2>/dev/null || echo "true")
_BRANCH=$(git branch --show-current 2>/dev/null || echo "unknown")
echo "BRANCH: $_BRANCH"
echo "PROACTIVE: $_PROACTIVE"
source <(~/.claude/skills/ostack/bin/ostack-repo-mode 2>/dev/null) || true
REPO_MODE=${REPO_MODE:-unknown}
echo "REPO_MODE: $REPO_MODE"
If PROACTIVE is "false", do not proactively suggest ostack skills — only invoke
them when the user explicitly asks. The user opted out of proactive suggestions.
If output shows UPGRADE_AVAILABLE <old> <new>: read ~/.claude/skills/ostack/ostack-upgrade/SKILL.md and follow the "Inline upgrade flow" (auto-upgrade if configured, otherwise AskUserQuestion with 4 options, write snooze state if declined). If JUST_UPGRADED <from> <to>: tell user "Running ostack v{to} (just updated!)" and continue.
AskUserQuestion Format
ALWAYS follow this structure:
- Recommendation: "Do X because Y." One sentence. Position first.
- Options: A) ... B) ... — two options, three max if genuinely needed. When an option involves effort, show both scales:
(human: ~X / CC: ~Y)
Skip AskUserQuestion entirely if there's a clear right answer — just do it and report.
Never hedge. Never pad with "great question." Never restate context the user already has. Compress ruthlessly. Trust the user to keep up.
What ships with it
48 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.
- bin/find-browse 814 B
- bin/remote-slug 572 B
- scripts/build-node-server.sh 1.9 KB runs code
- SKILL.md.tmpl 4.1 KB
- src/browser-manager.ts 21 KB runs code
- src/buffers.ts 4.2 KB runs code
- src/bun-polyfill.cjs 2.9 KB runs code
- src/cli.ts 14 KB runs code
- src/commands.ts 8.0 KB runs code
- src/config.ts 4.6 KB runs code
- src/cookie-import-browser.ts 15 KB runs code
- src/cookie-picker-routes.ts 7.5 KB runs code
- src/cookie-picker-ui.ts 16 KB runs code
- src/find-browse.ts 1.7 KB runs code
- src/meta-commands.ts 9.7 KB runs code
- src/platform.ts 634 B runs code
- src/read-commands.ts 12 KB runs code
- src/server.ts 13 KB runs code
- src/snapshot.ts 15 KB runs code
- src/url-validation.ts 3.1 KB runs code
- src/write-commands.ts 13 KB runs code
- test/bun-polyfill.test.ts 2.9 KB runs code
- test/commands.test.ts 67 KB runs code
- test/config.test.ts 11 KB runs code
- test/cookie-import-browser.test.ts 16 KB runs code
- test/cookie-picker-routes.test.ts 7.4 KB runs code
- test/find-browse.test.ts 2.0 KB runs code
- test/fixtures/basic.html 914 B
- test/fixtures/cursor-interactive.html 883 B
- test/fixtures/dialog.html 603 B
- test/fixtures/empty.html 43 B
- test/fixtures/forms.html 1.8 KB
- test/fixtures/qa-eval-checkout.html 4.2 KB
- test/fixtures/qa-eval-spa.html 3.2 KB
- test/fixtures/qa-eval.html 1.7 KB
- test/fixtures/responsive.html 1.4 KB
- test/fixtures/snapshot.html 1.5 KB
- test/fixtures/spa.html 638 B
- test/fixtures/states.html 567 B
- test/fixtures/upload.html 849 B
- test/handoff.test.ts 8.1 KB runs code
- test/ostack-config.test.ts 4.7 KB runs code
- test/ostack-update-check.test.ts 19 KB runs code
- test/path-validation.test.ts 2.2 KB runs code
- test/platform.test.ts 1.0 KB runs code
- test/snapshot.test.ts 20 KB runs code
- test/test-server.ts 1.7 KB runs code
- test/url-validation.test.ts 2.8 KB runs code
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 First seen · 469 lines · 115 tokens per session scan C 1c001a865855
browse is a skill published in the GitHub repository mr-daedalium/ostack-saas (111 stars, last pushed 5mo ago), licensed MIT. It adds 115 tokens to every session and 5,419 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). It is 89% identical to ostack, differing in 276 lines, and is treated as a copy.
Other skills, from other repositories
browse
Drive a real browser through Aside: open a page, read it, click through a flow, take screenshots, check console errors. (gstack).
playwright-cli
A command-line tool for controlling Chromium, Firefox, and WebKit browsers, including navigation, page interaction, screenshots, PDFs, and recorded actions.
webapp-testing
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
create-verification-skill
Create a repo-local verification skill and exhaustive feature map for driving a real app through its UI, CLI, or API. Use for "create a verification skill", "make a verify skill for this repo", or "document how agents can verify this app".
browser-qa
A browser-based quality check for deployed web pages and user flows. It uses browser automation to test rendering, navigation, forms, interactions, responsive behaviour, and accessibility-related issues.
test-electron-app
Drive the real running PostHog Electron app (live tRPC, workspace-server, real data) over CDP with agent-browser. Connect to the running app on port 9222, test desktop changes against a local Django stack, snapshot the accessibility tree, inspect network requests, and screenshot only when explicitly asked. Use when…