What is trusted-source-discovery?

An RSS-feed research workflow that follows links from supplied feeds to discover strong sources for news stories.

Use it with comma-separated RSS feed URLs to identify up to 20 useful sources, check for official APIs, and describe when each source matters.

It helps find original or frequently cited sources and provides instructions for accessing the underlying information programmatically.

trusted-source-discovery — Skill for Claude Code by press-pass

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.

Any agent

npx skills add press-pass/journalism-skills --skill trusted-source-discovery

Clone the repo

git clone --depth 1 https://github.com/press-pass/journalism-skills

Made for: Claude Code.

Or install journalism-skills, the plugin that ships this one along with the rest of its 12 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/press-pass/journalism-skills/trusted-source-discovery/github.svg)](https://agentmods.dev/skills/press-pass/journalism-skills/trusted-source-discovery)

Your own site

<a href="https://agentmods.dev/skills/press-pass/journalism-skills/trusted-source-discovery"><img src="https://agentmods.dev/badge/skills/press-pass/journalism-skills/trusted-source-discovery/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/press-pass/journalism-skills/trusted-source-discovery"><img src="https://agentmods.dev/badge/skills/press-pass/journalism-skills/trusted-source-discovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 324 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00015	$0.00324
Opus 5	$0.00008	$0.00162
Sonnet 5	$0.00003	$0.00065
Haiku 4.5	$0.00002	$0.00032

Measured 10d ago against content hash a60d623827bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

trusted-source-discovery 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 10d 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.

skills/trusted-source-discovery/SKILL.md · 27 lines

What it actually says

You will be given a comma-delimited list of RSS feed URLs. For each RSS feed:

Fetch the feed and extract all links contained within it that do not share a domain with the feed itself.
Identify the best sources. Good sources appear in many articles or are the only source in an article. Try to find sources that could spawn an article all on their own.
If the source is a social media site (i.e. Reddit, Instagram etc.) follow the link to the social media site to find more reliable sources on that page.
For each source, attempt to find an official API that contains the same information as the referenced link. Do not use 3rd-party copies of the data.

For each of the 20 best sources, call the add_source_from_source_discovery MCP tool with:

name: descriptive name of the source
aiAccessInstructions: how to access the source programmatically (API endpoint, scraping instructions, etc.)
whenItsImportant: when this source is newsworthy
sourceClientKey: object with api_key if needed and any other access metadata
isReferenceSource: is this source just a huge database that we can't get story leads from? Examples include 311 complaints, tax records, etc.

After creating all sources, summarize what was created including the returned source IDs.

RSS feeds to process: $ARGUMENTS

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.

10d ago First seen · 27 lines · 15 tokens per session scan A a60d623827bf

Subscribe to this mod's changes

trusted-source-discovery is a skill published in the GitHub repository press-pass/journalism-skills (2 stars, last pushed 3mo ago), licensed MIT. It adds 15 tokens to every session and 324 once invoked, about $0.0001 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 2026-08-31.

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