Second Brain Changed My Mind
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Install
$ agentstack add skill-undefined-ui-second-brain-os-second-brain-changed-my-mind ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-undefined-ui-second-brain-os-second-brain-changed-my-mind) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Trace changed positions
This is the query a vault can answer that nothing else can, and the reason the supersession rules exist. It only works because contradictions are recorded rather than overwritten.
Core rule
Report the change with both positions, both dates and the evidence between them. A conclusion without its history is just the current claim.
Workflow
- Find superseded claims across concept pages, and contradictions where the
sources differ in date.
- Reconstruct the sequence: what the page said, when, based on what; what
changed it, when.
- Distinguish real revision from correction. A factual error being fixed is
not a change of mind. A conclusion being revised on better evidence is.
- Flag unresolved ones. Contradictions still sitting open are the most
actionable output here.
- Say how firm the current position is, based on what moved it.
Output format
##
Was: (, )
Now: (, )
What moved it:
Firmness:
## Still unresolved
Calibration
If nothing has changed in the period, say so in one line. Manufacturing an apparent revision from two pages that never disagreed is worse than an empty result.
Never present the more recent source as correct by virtue of being recent.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: undefined-ui
- Source: undefined-ui/second-brain-os
- License: MIT
- Homepage: https://x.com/undefinedKi/status/2068306794116501544
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.