start-server

A procedure for starting or stopping a temporary EventSourcingDB server, a database that stores changes as events, in Docker for local development.

In plain words
What is it for?
Use it to try EventSourcingDB locally, test integrations, or shut down the development server.
Why use it?
It provides a disposable test database with a web interface and simple access settings; its data is lost when the container stops.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/thenativeweb/claude-plugins/start-server
Any agent
npx skills add thenativeweb/claude-plugins --skill start-server
Clone the repo
git clone --depth 1 https://github.com/thenativeweb/claude-plugins

Made for: Claude Code, Codex.

Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 787 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured 2d ago against content hash e8447830bdba, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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"
plugins/esdb/skills/start-server/SKILL.md · 91 lines

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-dev is 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.

Read the full file on GitHub · 91 lines

Changes

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.

  1. 2d ago First seen · 91 lines · 67 tokens per session scan A e8447830bdba

Subscribe to this mod's changes

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.

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