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/thenativeweb/claude-plugins/start-servernpx skills add thenativeweb/claude-plugins --skill start-servergit clone --depth 1 https://github.com/thenativeweb/claude-pluginsWhat 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 | $0.00067 | $0.00787 |
| Opus 5 | $0.00034 | $0.00394 |
| Sonnet 5 | $0.00013 | $0.00157 |
| Haiku 4.5 | $0.00007 | $0.00079 |
Grade A, and why
start-server 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 2d 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.
curl -s -i "http://localhost:3000/api/v1/ping" How it starts
The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Start Server (Development Mode)
Run a local EventSourcingDB instance for development and testing via Docker. The instance uses:
- Temporary data storage (
--data-directory-temporary) – all data is lost when the container stops. - Plain HTTP instead of HTTPS (
--http-enabled --https-enabled=false). - The built-in web UI (
--with-ui). - A simple API token (
secret).
This setup is for development only. Never use it in production.
Defaults
- Container name:
eventsourcingdb-dev - Port:
3000 - API token:
secret - Image:
thenativeweb/eventsourcingdb:latest
If the user asks for a different port, token, or image version, use their values instead.
Preflight
Check that Docker is running, and whether a dev instance already exists or the port is taken:
docker info > /dev/null 2>&1 && echo "Docker: running" || echo "Docker: NOT running"
docker ps --all --filter "name=eventsourcingdb-dev" --format "{{.Names}} ({{.Status}})"
lsof -nP -iTCP:3000 -sTCP:LISTEN || echo "Port 3000 is free"
- If Docker is not running, ask the user to start Docker first, then stop.
- If a container named
eventsourcingdb-devis already running, do not start a second one. Inform the user that the instance is already available and report the connection details (see below). - If the port is taken by another process, use AskUserQuestion to ask the user for an alternative port.
Start
docker run -d --rm --name eventsourcingdb-dev -p 3000:3000 \
thenativeweb/eventsourcingdb:latest run \
--api-token=secret \
--data-directory-temporary \
--http-enabled \
--https-enabled=false \
--with-ui
When using a custom port, only change the host side of the mapping (e.g., -p 3001:3000); the container-internal HTTP port stays 3000.
Verify
Wait briefly, then ping the instance:
sleep 2
curl -s -i "http://localhost:3000/api/v1/ping"
Check that the response contains HTTP status 200 OK and the Server header starts with EventSourcingDB/. If the ping fails, inspect the logs with docker logs eventsourcingdb-dev and report the problem.
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.
- 2d ago First seen · 91 lines · 67 tokens per session scan A e8447830bdba
start-server is a skill published in the GitHub repository thenativeweb/claude-plugins (6 stars, last pushed 2mo ago), licensed MIT. It adds 67 tokens to every session and 787 once invoked, about $0.0003 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 2026-08-31.
Other skills, from other repositories
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
babysit-pr
Babysit a GitHub pull request after creation by continuously polling review comments, CI checks/workflow runs, and mergeability state until the PR is merged/closed or user help is required. Diagnose failures, retry likely flaky failures up to 3 times, auto-fix/push branch-related issues when appropriate, and keep…
imagegen
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output…
cpu-profile-analysis
Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…
next-cache-components-optimizer
Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…