Perplexity Web Search
davila7/claude-code-templates
Runs web-grounded searches through Perplexity's Sonar models over OpenRouter for current events, recent literature and cited facts beyond the model's training cutoff.
Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection.
Install Hum Source Criticism
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install asgard-ai-platform/skills hum-source-criticism --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/hum-source-criticism .claude/skills/hum-source-criticism && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .claude/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticismType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install asgard-ai-platform/skills hum-source-criticism --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/hum-source-criticism .agents/skills/hum-source-criticism && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .agents/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install asgard-ai-platform/skills hum-source-criticism --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/hum-source-criticism .cursor/skills/hum-source-criticism && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .cursor/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/asgard-ai-platform/skills.git --path hum-source-criticism--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install asgard-ai-platform/skills hum-source-criticism --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/hum-source-criticism .gemini/skills/hum-source-criticism && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .gemini/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install asgard-ai-platform/skills hum-source-criticismInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/hum-source-criticism .github/skills/hum-source-criticism && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .github/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install asgard-ai-platform/skills hum-source-criticism --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/hum-source-criticism .opencode/skills/hum-source-criticism && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "hum-source-criticism" agent skill from https://github.com/asgard-ai-platform/skills/tree/main/hum-source-criticism into .opencode/skills/hum-source-criticism/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hum-source-criticism", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
hum-source-criticism- GitHub stars
- 242
- Token cost
- ~1.5k tokens
- SKILL.md length
- 565 words
- Files
- 4 (incl. references)
- Skills in repo
- 207
- Repo updated
- First seen
- Licence
- MIT
At a glance
Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection.
- The user needs to assess whether information is trustworthy
- SKILL.md covers Overview, Framework, Output Format and Examples, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Evaluate research sources
What it does
Hum Source Criticism is an agent skill from asgard-ai-platform/skills. Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection. Use this skill when the user needs to assess whether information is trustworthy, evaluate research sources, fact-check claims, or detect misinformation — even if they say 'can I trust this source', 'is this real', 'how reliable is this data', or 'fact-check this for me'.
Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `examples/sample_scenario.md`, `references/craap-test.md` and `references/fact-check-tools.md`).
It sits in Research & Science, covering Fact-checking and source verification. The repository describes itself as: 301 open-source coding agent skills across 22 domains — methodology, judgment & gotchas packaged as Claude Agent Skills for the Asgard AI Platform. The licence is MIT.
When your agent uses it
- The user needs to assess whether information is trustworthy
- Evaluate research sources
- Fact-check claims
- Detect misinformation — even if they say can I trust this source
Example prompts
- “can I trust this source”
- “is this real”
- “how reliable is this data”
- “/hum-source-criticism”
What it can do on your machine
Read from SKILL.md and the folder at commit 4e7f4f8. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Hum Source Criticism loads about 1.5k tokens when it runs, and up to ~7.1k if it reads all its reference files. Until then it costs about 109 tokens; SKILL.md has 565 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from asgard-ai-platform/skills at commit 4e7f4f8, republished under its MIT licence (© asgard-ai-platform). 565 words, ~1,526 tokens.
Download SKILL.mdSave it as
.claude/skills/hum-source-criticism/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- hum-source-criticism
- description
- Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection. Use this skill when the user needs to assess whether information is trustworthy, evaluate research sources, fact-check claims, or detect misinformation — even if they say 'can I trust this source', 'is this real', 'how reliable is this data', or 'fact-check this for me'.
- metadata.category
- WP-19 文學院/人文
- metadata.tags
- humanities, source-criticism, fact-checking, information-literacy
Source Criticism
Overview
Source criticism is a systematic method for evaluating whether information is trustworthy. Originally from historical methodology, it's now essential for navigating an information environment flooded with misinformation, opinion-as-fact, and AI-generated content.
Framework
IRON LAW: No Source Is Automatically Trustworthy
Every source — including academic journals, government data, and news from
reputable outlets — has potential biases, errors, and limitations. Credibility
is assessed, not assumed. "It's from the New York Times / 中央社" is not
sufficient — WHAT are they reporting, based on WHAT evidence, and do other
sources corroborate it?Source Classification
Primary sources: Direct evidence from the time/event (original documents, raw data, eyewitness accounts, original research, official records)
Secondary sources: Analysis or interpretation of primary sources (textbooks, review articles, news analysis, biographies)
Tertiary sources: Compilations of primary and secondary (encyclopedias, Wikipedia, databases) — starting points, not endpoints
Four Tests of Source Credibility
1. External Criticism — Is the source authentic?
- Who created it? Are they who they claim to be?
- When was it created? Is the date consistent?
- Is it the original or has it been altered?
- Is the publication/platform reputable?
2. Internal Criticism — Is the content reliable?
- Does the author have expertise in this topic?
- What is the author's potential bias or interest?
- Is the evidence cited? Can it be verified?
- Is the reasoning logical? Are conclusions supported by the evidence?
3. Triangulation — Do multiple independent sources agree?
- Check 3+ independent sources (not copies of the same original report)
- "Independent" means different authors, different organizations, different methods
- Agreement across independent sources strengthens confidence
4. Currency — Is the information current enough?
- When was it published? Has the situation changed since then?
- For fast-moving topics (AI, policy, markets), even 6-month-old sources may be outdated
Red Flags for Misinformation
| Red Flag | Description |
|---|---|
| No author or organization identified | Who stands behind this claim? |
| Emotional language without evidence | Designed to provoke, not inform |
| No primary sources cited | Claims without traceable evidence |
| "Studies show" without naming the study | Vague appeals to authority |
| Single source amplified across many sites | Same claim copied, not independently verified |
| Too good to be true / too outrageous | Extreme claims require extreme evidence |
| URL/domain mimics reputable source | Fakecnn.com, bbc-news.co (not bbc.co.uk) |
Output Format
# Source Evaluation: {Source/Claim}
## Source Identity
- Author/Organization: {who}
- Publication: {where}
- Date: {when}
- Type: Primary / Secondary / Tertiary
## Credibility Assessment
| Test | Assessment | Evidence |
|------|-----------|---------|
| External (authentic?) | ✓/⚠/✗ | {reasoning} |
| Internal (reliable?) | ✓/⚠/✗ | {reasoning} |
| Triangulation (corroborated?) | ✓/⚠/✗ | {other sources checked} |
| Currency (current?) | ✓/⚠/✗ | {relevance of date} |
## Red Flags
- {any detected red flags}
## Verdict
- Credibility: High / Moderate / Low
- Recommended action: {trust / verify further / discard}Examples
Show full SKILL.md (259 more words)Show less
Correct Application
Scenario: Evaluating a viral social media post claiming "Taiwan's GDP will surpass South Korea's by 2027"
| Test | Assessment | Evidence |
|---|---|---|
| External | ⚠ | Anonymous account, no institutional affiliation, chart has no data source |
| Internal | ✗ | Uses nominal GDP (not PPP), cherry-picks semiconductor sector projection, ignores exchange rate volatility |
| Triangulation | ✗ | IMF and World Bank projections show no such convergence; no reputable analyst makes this claim |
| Currency | ✓ | Posted this month |
Red flags: Emotional headline ("Taiwan DESTROYS Korea"), no primary data source cited, single unsourced chart Verdict: Low credibility — discard ✓
Incorrect Application
- "This is from Reuters, so it must be true" → Credibility assumed, not assessed. Even reputable sources can be wrong, outdated, or framing an issue in a particular way. Violates Iron Law.
Gotchas
- Bias ≠ unreliable: Every source has a perspective. A labor union's report on working conditions is biased but may contain accurate data. Assess bias AND accuracy separately.
- Wikipedia is a starting point: It's a tertiary source with references. Follow the references to primary/secondary sources. Don't cite Wikipedia as evidence — cite what Wikipedia cites.
- AI-generated content: AI can produce convincing but fabricated "sources" (fake papers, fake quotes, fake statistics). Verify that cited sources actually exist.
- Consensus ≠ truth, but it's a strong signal: Scientific consensus (climate change, vaccine safety) is the strongest available evidence. Lone dissenting "experts" who contradict consensus need extraordinary evidence.
- Source credibility is domain-specific: A cardiologist is a credible source on heart disease but not on economics. Match expertise to the claim.
References
- For CRAAP test (Currency, Relevance, Authority, Accuracy, Purpose), see
references/craap-test.md - For fact-checking tools and databases, see
references/fact-check-tools.md
© asgard-ai-platform, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files (references) in hum-source-criticism of asgard-ai-platform/skills.
- SKILL.md
- examples/sample_scenario.md
- references/craap-test.md
- references/fact-check-tools.md
Open the folder on GitHubat commit 4e7f4f8
Compare with similar skills
Hum Source Criticism next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Hum Source Criticism this skillasgard-ai-platform/skills | 242 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Perplexity Web Searchdavila7/claude-code-templates | 32k | 11 repos | ~3.5k | Automated safety check: Notes | MIT | |
| Citation Verification GuideGalaxy-Dawn/claude-scholar | 5.7k | 2 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Article Fact Checkerdigoal/blog | 8.6k | — | ~939 | Automated safety check: Pass | GPL-2.0 | |
| Deep Research Agent TeamImbad0202/academic-research-skills | 51k | — | ~13k | Automated safety check: Pass | Custom licence | |
| Docs Grounding Verifiermicrosoft/apm | 4k | — | ~1.9k | Automated safety check: Pass | MIT |
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Citation Verification Guide
Galaxy-Dawn/claude-scholar
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Article Fact Checker
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三层审查模型,逐段逐句验证文章真伪、证据链与逻辑结构。Use when the user asks to fact-check, verify, audit, or evaluate the credibility of an article, essay, report, opinion piece, social-media post, or any written claim —…
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Runs a 13-agent pipeline for rigorous academic research, from forming the question through systematic search, synthesis, bias checks and an APA 7.0 report.
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Related
Categories
Questions about Hum Source Criticism
What does Hum Source Criticism do?
Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection. Hum Source Criticism is an agent skill from asgard-ai-platform/skills. Evaluate source credibility using primary/secondary classification, internal/external criticism, triangulation, and misinformation detection.
When should I use Hum Source Criticism?
Hum Source Criticism fits situations like: the user needs to assess whether information is trustworthy; evaluate research sources; fact-check claims; detect misinformation — even if they say can I trust this source.
How do I install Hum Source Criticism in Claude Code?
Run `npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a claude-code`. Or copy the skill folder (hum-source-criticism in asgard-ai-platform/skills) into .claude/skills/hum-source-criticism in your project. Claude Code loads it when a task matches its description.
How do I install Hum Source Criticism in Codex?
Run `npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a codex`. Or copy the skill folder (hum-source-criticism in asgard-ai-platform/skills) into .agents/skills/hum-source-criticism in your project. Codex loads it when a task matches its description.
Can I use Hum Source Criticism in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add asgard-ai-platform/skills --skill hum-source-criticism -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hum-source-criticism, .gemini/skills/hum-source-criticism, .github/skills/hum-source-criticism and .opencode/skills/hum-source-criticism in your project.
What does Hum Source Criticism need to run?
SKILL.md names no scripts, command-line tools or credentials: Hum Source Criticism is instructions for the agent only.
Does Hum Source Criticism access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Hum Source Criticism safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Hum Source Criticism use?
Hum Source Criticism is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Hum Source Criticism use?
About 1.5k tokens (SKILL.md is roughly 6.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.6k tokens, read only when the agent opens those files.
What are the alternatives to Hum Source Criticism?
Skills that share tags, products or a category with Hum Source Criticism: Perplexity Web Search (davila7/claude-code-templates, 32k stars), Citation Verification Guide (Galaxy-Dawn/claude-scholar, 5.7k stars), Article Fact Checker (digoal/blog, 8.6k stars) and Deep Research Agent Team (Imbad0202/academic-research-skills, 51k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Hum Source Criticism?
asgard-ai-platform (a GitHub organization) maintains it in asgard-ai-platform/skills, which has 242 GitHub stars. The repository holds 207 skills in this directory. The repository was last updated on June 6, 2026.
Source: asgard-ai-platform/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.