serve

serve is a command for coding agents from ivbeg/newsworker. It costs 5 tokens per session (534 once invoked), scanned A, original, MIT.

A command that starts a small local HTTP server using only Python's standard library. It can turn a web page URL into a feed, such as RSS, Atom, JSON, CSV, HTML, or Markdown.

In plain words
What is it for?
Use it to start the server, request a feed for a page with GET, check whether the service is live or ready, inspect metrics when available, and control host, port, cache, and verbosity settings.
Why use it?
It provides a local way to fetch page content as feed data without installing extra dependencies, while supporting caching and health checks.

Command

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 commands/ivbeg/newsworker/serve
Clone the repo
git clone --depth 1 https://github.com/ivbeg/newsworker

Wrote 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.

agentmods badge for serve

README.md
[![agentmods](https://agentmods.dev/badge/commands/ivbeg/newsworker/serve.svg)](https://agentmods.dev/commands/ivbeg/newsworker/serve)
Your own site
<a href="https://agentmods.dev/commands/ivbeg/newsworker/serve"><img src="https://agentmods.dev/badge/commands/ivbeg/newsworker/serve.svg" alt="Measured on agentmods" height="20"></a>
Per session 5 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 534 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00005 $0.00534
Opus 5 $0.00003 $0.00267
Sonnet 5 $0.00001 $0.00107
Haiku 4.5 $0.00001 $0.00053

Measured 4d ago against content hash 8be506f9a890, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

serve 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 4d 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.

docs/docs/commands/serve.md · 54 lines

What it actually says

serve

Runs a lightweight local HTTP server (Python standard library, no extra dependencies) that turns any page URL into a feed on demand over GET.

newsworker serve [OPTIONS]
Option Alias Default Description
--host -h 127.0.0.1 Interface to bind.
--port -p 8787 Port to listen on.
--config -c (default) Path to a settings YAML file.
--cache-dir (settings) Directory for cached specs and page content.
--content-ttl (settings) Seconds a cached page stays fresh.
--verbose -v false Verbose logging.

Endpoints

Route Description
GET /feed?url=<page>&format=atom Build a feed from <page>. Add &refresh=1 to bypass caches. Responses include ETag / Last-Modified.
GET /health Liveness alias.
GET /health/live Liveness.
GET /health/ready Readiness.
GET /metrics Prometheus metrics when newsworker[metrics] is installed; otherwise 404.
GET / Short usage help.

format is one of atom (default), rss, json, jsonfeed, csv, html, markdown, yaml. Server clients may opt into bounded confidence and warning headers with diagnostics=1.

newsworker serve --port 8787
http://127.0.0.1:8787/feed?url=https%3A%2F%2Fexample.com%2Fnews&format=atom

:::caution Security The server fetches whatever URL is passed to /feed?url=, so it is a server-side request forgery (SSRF) surface. Bind to loopback by default. If you expose it, set allowed_hosts and API tokens. See security. :::

See feed server.

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. 4d ago First seen · 54 lines · 5 tokens per session scan A 8be506f9a890

Subscribe to this mod's changes

serve is a command published in the GitHub repository ivbeg/newsworker (87 stars, last pushed yesterday), licensed MIT. It adds 5 tokens to every session and 534 once invoked, about $0.0000 per session on Opus 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 2026-08-30.