ClaudSkills / Science & Research / research-methods

Belief Revision

Q: What is a Claude Code skill and how does the Belief Revision skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Belief Revision is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: research-methods · Last updated: 2026-06-13

A structured framework for AI agents to revise a prior verdict, classification, hypothesis, or analysis when new evidence emerges — calibrated against both under-correction (anchoring on the prior) and over-correction (anchoring on novelty or social pressure). Use whenever the task involves updating a previously reached conclusion in light of new information, reconsidering a verdict after primary sources are fetched, deciding whether a contested claim should change classification, integrating a late-breaking piece of evidence into an existing investigation or peer review, or any request to "update this", "revise this", "rethink this in light of X", "does this new evidence change anything", "should I change my mind". Pair with whichever analytical skill produced the prior — this skill takes that output and produces a calibrated revision in its format.

About this skill (catalog notes)

Belief Revision includes pricing or quota commentary; at least one code block. At roughly 2,656 words the SKILL.md is on the longer end of the catalog distribution.

License: Apache-2.0
Original author: patricksavalle
Indexed lastmod: 2026-06-13
Catalog position: Science & Research · research-methods
Indexed related skills: 10

How Belief Revision fits the catalog

Belief Revision sits in the Science & Research category under the research-methods sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Update a prior verdict when new evidence emerges — calibrated, traceable, and protected against both under-correction (anchoring on the prior) and over-correction (anchoring on novelty or social pressure).

What this skill does

Belief Revision is a community-contributed Claude Code skill in the research-methods sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/belief-revision/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use whenever the task involves updating a previously reached conclusion in light of new information, reconsidering a verdict after primary sources are fetched, deciding whether a contested claim should change classification, integrating a late-breaking piece of evidence into an existing investigation or peer review, or any request to "update this", "revise this", "rethink this in light of X", "does this new evidence change anything", "should I change my mind". Pair with whichever analytical skill produced the prior — this skill takes that output and produces a calibrated revision in its format.

Who uses this skill

The Belief Revision Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/belief-revision
curl -L https://claudskills.com/skills/belief-revision/SKILL.md \
  -o ~/.claude/skills/belief-revision/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/belief-revision/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/belief-revision/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\belief-revision\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Belief Revision Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/belief-revision/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Belief Revision skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Belief Revision skill?

Use Belief Revision when your Claude Code task falls under the Science & Research category — specifically in the research methods area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Belief Revision" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Belief Revision skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Belief Revision is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/patricksavalle/investigate-journalism-skills/blob/0f2982330184035c2484a0c4c21152a4c5bbe420/.claude/skills/belief-revision/SKILL.md
License: Apache-2.0
Author: patricksavalle

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

patricksavalle. (2026). Belief Revision [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/belief-revision/

BibTeX

@misc{belief-revision-2026,
  author    = {patricksavalle},
  title     = {Belief Revision [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/belief-revision/}
}

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