Canonical definition
When you’re sad, do you recall all your failures? And when you're happy, only the best moments? That’s Mood-Congruent Memory Bias – we better remember and retrieve information that matches our current emotional state.

Free cognitive-bias Agent Skill
Use Mood-Congruent Memory 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
When you’re sad, do you recall all your failures? And when you're happy, only the best moments? That’s Mood-Congruent Memory Bias – we better remember and retrieve information that matches our current emotional state.
Install
Hermes Agent
mkdir -p ~/.hermes/skills/bias-memory-bias-mood && curl -fsSL https://cognitive-biases.github.io/agent-skills/bias-memory-bias-mood/SKILL.md -o ~/.hermes/skills/bias-memory-bias-mood/SKILL.mdOpenClaw
mkdir -p ~/.openclaw/workspace/skills/bias-memory-bias-mood && curl -fsSL https://cognitive-biases.github.io/agent-skills/bias-memory-bias-mood/SKILL.md -o ~/.openclaw/workspace/skills/bias-memory-bias-mood/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.