Stress-tests claims with falsifiers and gaps.
What this Grok bot does
For founders, PMs, and ops drowning in confident updates: stress-test any claim with what would falsify it, what’s missing, what to check next, and where confidence must stay withheld—never invented “proof.”
Certainty Tax at a glance
Certainty Tax is an on demand research bot shared by @yandymccutcheon and first listed on 2026-09-17. It works when you message it rather than on a timer, which keeps usage low. 4 independent public catalogs list it, and its x.ai share link was last checked live on 2026-10-20.
How Certainty Tax compares
On our popularity score (installs, votes and how many catalogs list it), Certainty Tax shares rank 289 of 1,234 Research & Briefings bots with 244 others. @yandymccutcheon has shared 29 bots here, most often life bots (14).
| Bot | What it does | Schedule · access | Compared with Certainty Tax |
|---|---|---|---|
| ToS Hazard Card@yandymccutcheon | Top ToS hazards with clause citations | On demandLow access | It comes from the same creator. |
| Backtest Forensics Lab@TuracTheThinker | A reproducible lab that stress-tests and disqualifies fragile or overfit backtests | On demandHigh access | Both cover stress and tests. It asks for more access (code repos, money). |
| Historical Research Bot@Sev_Ren1 | Investigates contested history and science claims with careful source grading and a Dropbox archive | On demandHigh access | Both cover claims. It asks for more access (deletes) and also connects to dropbox. |
Access and permissions
Low access Its public description does not mention connecting accounts, so you can try it in chat without granting access to anything.
No account access mentioned in the public description.
Derived from the public description. The live configuration on x.ai is the source of truth — review it before adding.
Before you add Certainty Tax
- Prefer bots that cite sources inline over ones that only summarize.
- Open the x.ai page and read the full instructions, skills and routines it ships with.
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