Executes these capabilities
Inside this skill
The internal capability tree shows how this skill gets its work done.
SFact Verification
- claim extraction
- source lookup
- cross-checking
- source quality rating
The contract
Input
- A draft containing factual claims
- Optional candidate sources
Output
- Claim-by-claim verification table
- Flagged unverifiable claims
Deliverables
- Verification table with check dates
Use cases
- Pre-publish content check
- Reviewing AI-generated drafts
- Auditing existing pages
Dependencies and replacements
Dependencies
- Web access
Required tools
- A browser
Required permissions
- Web access
Compatible with
- seo-content-workflow
- validation-checklist
Alternatives
- Human fact-checking
- Specialized verification tools
Replaceable components
- The source list
- The verification table format
Reliability
Human checkpoints
- Human decides what happens to flagged claims
Limitations
- Cannot verify opinions presented as facts
- Source quality judgments are partly subjective
- Fast-changing topics need recent sources
Failure modes
- Marking claims verified from weak sources
- Verifying the statement instead of the source
- Missing implied claims in the text
Recovery steps
- Require at least two independent sources for key claims
- Check the source actually says what the claim says
- Read the draft for implied factual claims, not just explicit ones
Validation methods
- A sample of verified claims is audited by a second pass
Sources
Entry checked on Jul 31, 2026. Verification status reflects what AgentSkillTree has independently run, not the skill's own claims.
When to use
Use on any draft that will be published or used for decisions. The output is a table: claim, source, check date, and verdict, so nothing depends on the agent’s memory.