Canonical definition
You watch the news, read blogs, study research – and everywhere you see the same thing? It seems like solid information, but if all sources refer to the same origin, it’s just an echo, not verification.

Free cognitive-bias Agent Skill
Use Common Source Bias as a focused cognitive-bias lens. Explain the pattern, check whether it plausibly fits the situation, surface an alternative non-bias explanation, and return a practical counter-check without diagnosing people or claiming causation.
What the agent should do
You watch the news, read blogs, study research – and everywhere you see the same thing? It seems like solid information, but if all sources refer to the same origin, it’s just an echo, not verification.
Install
Hermes Agent
mkdir -p ~/.hermes/skills/bias-information-bias-common-source-bias && curl -fsSL https://cognitive-biases.github.io/agent-skills/bias-information-bias-common-source-bias/SKILL.md -o ~/.hermes/skills/bias-information-bias-common-source-bias/SKILL.mdOpenClaw
mkdir -p ~/.openclaw/workspace/skills/bias-information-bias-common-source-bias && curl -fsSL https://cognitive-biases.github.io/agent-skills/bias-information-bias-common-source-bias/SKILL.md -o ~/.openclaw/workspace/skills/bias-information-bias-common-source-bias/SKILL.mdOther Agent Skills-compatible tools
Download SKILL.md and put it in the skill directory or import surface supported by your agent.
Boundary
The skill must preserve uncertainty, surface a non-bias explanation and avoid turning a cognitive-bias label into a claim about a person's motives, intelligence or mental health.