ccMarvin vs CrewScore

Marvin watches every company you back, private or public, and delivers the signals that matter: exec changes, acquisitions, product releases, funding rounds. Straight to...

Find written guardrails missing from AI assistant instructions with 23 public, browser-local controls.

About ccMarvin

Marvin watches every company you back, private or public, and delivers the signals that matter: exec changes, acquisitions, product releases, funding rounds. Straight to your inbox. Research, summaries, planning help, and life analysis, delivered to your inbox. 2026-09-07, Teased the Grok 5 training run, "biggest cluster yet", and said the Cybercab line is running ahead of schedule. 2026-09-06, Essay follow-up: interpretability results are moving into production Claude models.

About CrewScore

Find written guardrails missing from AI assistant instructions with 23 public, browser-local controls. Runs locally 23 public controls Open source No API key . It checks whether guardrails are written down, not whether an agent follows them. CrewScore reports written-control coverage and the first control to review; it does not test runtime behavior. AI assistant instructions Paste ChatGPT custom instructions, a Claude Project prompt, a support-bot prompt, or another system prompt. CrewScore will show written controls it detected and suggested controls to review.