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.
Systematically investigate social media claims and viral content.
$ npx skills add jwynia/agent-skills --skill claim-investigation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jwynia/agent-skills claim-investigation --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/jwynia/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .claude/skills/claim-investigation && 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 "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .claude/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigationType 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 jwynia/agent-skills --skill claim-investigation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jwynia/agent-skills claim-investigation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .agents/skills/claim-investigation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .agents/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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 jwynia/agent-skills --skill claim-investigation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jwynia/agent-skills claim-investigation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .cursor/skills/claim-investigation && 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 "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .cursor/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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/jwynia/agent-skills.git --path skills/general/research/verification/claim-investigation--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 jwynia/agent-skills --skill claim-investigation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jwynia/agent-skills claim-investigation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .gemini/skills/claim-investigation && 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 "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .gemini/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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 jwynia/agent-skills claim-investigationInstalls 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 jwynia/agent-skills --skill claim-investigation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .github/skills/claim-investigation && 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 "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .github/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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 jwynia/agent-skills --skill claim-investigation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jwynia/agent-skills claim-investigation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jwynia/agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/general/research/verification/claim-investigation .opencode/skills/claim-investigation && 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 "claim-investigation" agent skill from https://github.com/jwynia/agent-skills/tree/main/skills/general/research/verification/claim-investigation into .opencode/skills/claim-investigation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claim-investigation", 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.
claim-investigationSystematically investigate social media claims and viral content.
Claim Investigation is an agent skill from jwynia/agent-skills. Systematically investigate social media claims and viral content. Use when fact-checking complex claims, when decomposing multi-part assertions, or when investigating narratives that mix facts with interpretation.
Its SKILL.md is about 3.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Research & Science, covering Fact-checking and source verification. The licence is MIT.
7 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit e02ec7e. It shows what the files ask for, not the result of running them.
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.
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Claim Investigation loads about 3.5k tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 1,568 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.
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.
The full file from jwynia/agent-skills at commit e02ec7e, republished under its MIT licence (© jwynia). 1,568 words, ~3,518 tokens.
.claude/skills/claim-investigation/SKILL.md (or your agent's skills folder).You help systematically investigate claims from social media and other sources, separating verifiable facts from narrative interpretation and identifying what can and cannot be confirmed.
Complex claims typically combine verifiable facts with unverifiable interpretations. Effective investigation decomposes claims into atomic components, verifies each independently, and clearly distinguishes between confirmed facts and narrative framing.
Break the statement into individual verifiable claims. Each should be:
Example Decomposition: Original: "The House Leader refusing to seat the newly-elected AZ-07 special election winner because she'd vote to release the Epstein files"
Atomic claims:
| Type | Description | Verifiability |
|---|---|---|
| ENTITY | Person, organization, place | Usually verifiable |
| EVENT | Something that allegedly happened | Often verifiable |
| STATE | Current condition or status | Usually verifiable |
| PROCESS | Official procedure or mechanism | Verifiable |
| CAUSATION | Claimed reason or motivation | Rarely verifiable |
| NARRATIVE | Interpretive framing | Not directly verifiable |
Note what's conspicuously absent:
Convert vague references to specific, searchable terms:
For each event:
Start with most basic, verifiable claims:
Search Strategy:
For any claimed action/inaction:
For any "because" or causal claim:
Direct Evidence:
Indirect Evidence:
Context:
For each source, note:
Document without dismissing:
Patterns indicating narrative rather than fact:
For each narrative:
What would change interpretation:
VERIFIED FACTS:
- [Fact] (Source: [citation])
DISPUTED/UNCLEAR:
- [Claim]:
- Supporting: [source]
- Contradicting: [source]
- Unable to verify: [what's missing]
CONTEXT NEEDED:
- [Procedural context]
- [Historical precedent]
- [Timeline considerations]
NARRATIVE ELEMENTS:
- [Claim]
- Facts that support: [list]
- Facts that complicate: [list]
- Alternative explanations: [list]| Level | Meaning |
|---|---|
| Certain | Multiple primary sources confirm |
| Probable | Multiple credible sources align, no contradictions |
| Possible | Some evidence supports, gaps remain |
| Unclear | Contradictory evidence or insufficient info |
| False | Contradicted by authoritative sources |
Document what couldn't be determined:
Patterns suggesting intentional misrepresentation:
If initial investigation reveals deeper issues:
context/output-config.md in the projectresearch/investigations/ or explorations/research/Pattern: {topic}-investigation-{date}.md
context/output-config.md{topic}-investigation-{date}.mdTrigger phrases: "full investigation", "trace all sources", "analyze the narrative"
| Task | Agent Type | When to Spawn |
|---|---|---|
| Source research | general-purpose | When tracing claim origins |
| Timeline construction | general-purpose | When mapping event sequences |
Pattern: Finding one source that matches the claim and declaring it verified. Why it fails: Single-source verification misses errors, biases, and coordinated misinformation where multiple outlets repeat the same false claim without independent verification. Fix: Require at least 2-3 independent sources. Trace claims back to primary sources. Check if "multiple sources" are actually just repeating the same original source.
Pattern: Accepting "X happened because Y" claims when only "X happened" and "Y exists" are verified. Why it fails: Correlation proves co-occurrence, not causation. Human pattern-matching fills in causal links that may not exist. Political narratives especially exploit this gap. Fix: Demand direct evidence for causation (stated intent, documented decisions). When causation can't be verified, report it as "alleged motivation" or "claimed reason."
Pattern: Finding one fact wrong and dismissing the entire claim without investigating other components. Why it fails: Complex claims often mix true and false elements. Dismissing everything because one part is wrong misses real issues embedded in the narrative. Fix: Decompose fully, verify each component independently. Report accuracy per-component: "Claims A and C are verified; claim B is false; claim D is unverifiable."
Pattern: Accepting official sources uncritically because they're "authoritative." Why it fails: Official sources can be wrong, incomplete, outdated, or deliberately misleading. Authority reduces probability of error but doesn't eliminate it. Fix: Cross-reference official sources with other evidence. Note when official sources have incentives to misrepresent. Distinguish between "official position" and "verified fact."
Pattern: Starting with a hypothesis about what's "really happening" and investigating to prove it. Why it fails: Confirmation bias shapes what evidence you seek and how you interpret it. You'll find "evidence" for any narrative if you look hard enough. Fix: Start with the specific claims made. Investigate each on its own terms. Actively seek disconfirming evidence. Document alternative explanations that fit the same facts.
| Skill | What it provides |
|---|---|
| research | Initial source discovery and query expansion |
| media-meta-analysis | Understanding of source biases and media patterns |
| Skill | What this provides |
|---|---|
| fact-check | Verified facts for post-generation checking |
| sensitivity-check | Context for evaluating representation claims |
| Skill | Relationship |
|---|---|
| research | Use research for broad information gathering, claim-investigation for specific claim verification |
| fact-check | Use claim-investigation for external claims, fact-check for AI-generated content verification |
© jwynia, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in skills/general/research/verification/claim-investigation of jwynia/agent-skills.
Open the folder on GitHubat commit e02ec7e
Claim Investigation 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 |
|---|---|---|---|---|---|---|
| Claim Investigation this skilljwynia/agent-skills | 170 | — | ~3.5k | Automated safety check: Pass | MIT | |
| Perplexity Web Searchdavila7/claude-code-templates | 33k | 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 |
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.
Galaxy-Dawn/claude-scholar
Reference guidance for checking every citation in academic writing against canonical sources such as DOI, arXiv, CrossRef and Semantic Scholar, to catch fake or wrong references.
digoal/blog
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 —…
Imbad0202/academic-research-skills
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.
microsoft/apm
A skill your agent uses to verify CLAIM-LEVEL grounding of a documentation page (or set of pages) against the source code.
bradygaster/squad
Review and validate claims using counter-hypothesis testing.
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Create distinctive, production-grade frontend interfaces with high design quality.
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Categories
Systematically investigate social media claims and viral content. Claim Investigation is an agent skill from jwynia/agent-skills. Systematically investigate social media claims and viral content.
Claim Investigation fits situations like: fact-checking complex claims; decomposing multi-part assertions; investigating narratives that mix facts with interpretation.
Run `npx skills add jwynia/agent-skills --skill claim-investigation -a claude-code`. Or copy the skill folder (skills/general/research/verification/claim-investigation in jwynia/agent-skills) into .claude/skills/claim-investigation in your project. Claude Code loads it when a task matches its description.
Run `npx skills add jwynia/agent-skills --skill claim-investigation -a codex`. Or copy the skill folder (skills/general/research/verification/claim-investigation in jwynia/agent-skills) into .agents/skills/claim-investigation in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jwynia/agent-skills --skill claim-investigation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/claim-investigation, .gemini/skills/claim-investigation, .github/skills/claim-investigation and .opencode/skills/claim-investigation in your project.
SKILL.md names no scripts, command-line tools or credentials: Claim Investigation is instructions for the agent only.
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.
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.
Claim Investigation is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
About 3.5k tokens (SKILL.md is roughly 14k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Claim Investigation: Perplexity Web Search (davila7/claude-code-templates, 33k 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.
jwynia (a GitHub user) maintains it in jwynia/agent-skills, which has 170 GitHub stars. The repository holds 111 skills in this directory. The repository was last updated on February 24, 2026.
Source: jwynia/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.