EmDash is a content management system for creating and managing websites, built with TypeScript and Astro and deployable on Cloudflare or Node.js with SQLite. It is for site owners and developers who want WordPress-like administration, templates, and plugins without PHP or separate hosting.
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 agentmods add skills/emdash-cms/emdash/repro-publicnpx skills add emdash-cms/emdash --skill repro-publicgit clone --depth 1 https://github.com/emdash-cms/emdashWrote 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/emdash-cms/emdash/repro-public)<a href="https://agentmods.dev/skills/emdash-cms/emdash/repro-public"><img src="https://agentmods.dev/badge/skills/emdash-cms/emdash/repro-public.svg" alt="Measured on agentmods" 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 | $0.00048 | $0.01136 |
| Opus 5 | $0.00024 | $0.00568 |
| Sonnet 5 | $0.00010 | $0.00227 |
| Haiku 4.5 | $0.00005 | $0.00114 |
Grade A, and why
repro-public scanned grade A with 1 finding 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 5d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
6. **Inspect the rendered output.** `agent-browser snapshot -i -c` for the accessibility tree; `agent-browser get text @e<n>` to extract a region. For RSS or other non-HTML output, fetch it through the browser's network How it starts
The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reproduce: Public Site
The bug is in the rendered public site -- Astro pages outside /_emdash, the SSR output a visitor sees, public routing, sitemap, RSS, image rendering, or query patterns anonymous readers hit. No admin session needed. Reproduce and confirm entirely through agent-browser: the durable artifacts are your screenshots, a captured DOM slice, and a precise, replayable transcript. Do not write Playwright or any other browser test -- you cannot run one reliably here. The regression test belongs to whoever lands the fix.
Environment
The dev server, agent-browser, and any CLI seeding run in an attached container (node + browser; neither exists in the isolate). Read the issue and grep the source in the isolate first, then attach the container for the reproduction.
Do not
- No
git commit,git push, or branch creation. - No GitHub writes. Read-only API GETs only.
- No network beyond
localhost(the demo) and the proxy-signed GitHub API. - Touch no issue other than the one being investigated.
Procedure
- Re-read the issue (isolate). Note the exact URL or route pattern, expected-vs-actual output, and any headers or query strings that mattered. Public-site bugs often hinge on the locale, the requested format (HTML vs RSS), or specific content rows -- be precise.
- Pick a demo.
demos/simpleis the default. For a locale-specific bug, pick a demo with multiple locales seeded; for a collection-specific bug, one that already has that collection. - Seed content only if necessary. If the repro needs a content item the seed lacks, create it with the CLI in the container:
pnpm exec emdash content create <collection> --data '...'(see theemdash-cliskill for exact flags). Prefer ephemeral CLI-created content over editing seed files -- it disappears with the Workspace. - Attach a container and start the demo dev server. Astro 7 backgrounds dev servers natively -- from the demo directory run
astro dev --background(e.g.pnpm --filter ./demos/simple exec astro dev --background). It detaches, enables JSON logging, and returns once the server is up, so you do not poll or improvise process management. Read the URL/port/PID and readiness from the.astro/dev.jsonlock file orastro dev status; Astro serves onlocalhost:4321. Tail output withastro dev logs --follow. If the server never comes up, captureastro dev logsand treat it as a setup failure. Stop it withastro dev stopwhen done (or leave it -- it dies with the container). - Open the affected route.
agent-browser open "http://localhost:4321/<path>"with the exact path from the issue. Include any query string orAcceptheader the issue calls out. - Inspect the rendered output.
agent-browser snapshot -i -cfor the accessibility tree;agent-browser get text @e<n>to extract a region. For RSS or other non-HTML output, fetch it through the browser's network panel rather thancurl-- the browser follows the demo's Astro routing the way a visitor does. - Check for runtime errors.
agent-browser consolefor hydration warnings, missing data, or 404 sub-requests;agent-browser errorsfor exceptions thrown during render or hydration. - Screenshot at meaningful states. Save to
.bot-artifacts/step-<n>.png: one of the page as loaded, one of the broken element if visible. - Confirm the failure mode matches. Public-site bugs are easy to misidentify -- rendering differences can come from missing seed data, a stale build artifact, or an unrelated route. If you cannot produce exactly the reported symptom, say so. Write the exact replayable steps (URL, any query string or
Acceptheader, observed-vs-expected) so a maintainer can follow without you.
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.
- 5d ago First seen · 53 lines · 48 tokens per session scan A 47f3fc2fc744
repro-public is a skill published in the GitHub repository emdash-cms/emdash (12,217 stars, last pushed today), licensed MIT. It adds 48 tokens to every session and 1,136 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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