Real Agent Cases

Extend a family tree two generations with Claude Code and browser agents

Source date:
Last verified:
Method:
How we verify

Evidence: Shown on videoThe source includes a video or screen recording of the agent doing the task.

Outcome

Working from the family's archive scans, Claude Code with memory and the Claude browser plugin cross-checked church books, ship manifests and naturalization records, built a 300-page family wiki, and found two more generations in a day; the family is now checking it for errors.

Poster says:300-page family wiki

This is the source's own number. We haven't measured it.

Agent

Claude Code, Claude in Chrome, Perplexity Comet

Prompt Recreated prompt

The source did not publish its exact prompt. This one is our reconstruction from what the source describes.

Not sure how to start? Tell me what you're trying to get done and I'll help you turn it into a clear request.

Goal: Help me extend my family tree using the records I have and public archives, and keep everything traceable to a source.

Quick check first: Who is the earliest ancestor you know, and where did they live?

What I need from you:
- Your existing family tree and any scans or documents
- Names, places and dates you already know

Rules:
- Search public archives (church books, ship manifests, naturalization records) and download the matching scans.
- Only add a person when a document supports it, and cite it.
- Mark uncertain matches clearly instead of guessing.
- Keep everything in one folder I can review.

Output: An organized family wiki with each person linked to their source documents, plus a list of uncertain matches.

If any of this is unclear, tell me what you have and I'll help fill the gaps.

You'll know it worked when: each new ancestor is backed by a document your family can check.

Works best when: relatives review the results, since some readings may be wrong.

Source

https://x.com/staskulesh/status/2036173711053651984

By Stas Kulesh (@staskulesh) · Published Mar 23, 2026 · Added Oct 16, 2026 · Last verified Oct 16, 2026

  • Connected read-only to Gmail, Claude Cowork found 12 relevant PR pitches in about a minute, then narrowed to eight on-record quotes with publish permission that the journalist verified before use.

    Claude Cowork · Research · Source date:

  • Using scraped HMRC manuals and legislation plus a CLAUDE.md that launches parallel subagents, Claude Code answered an ATT exam question in about 5 minutes, earning roughly 2.5 of 3 marks by the author's grading.

    Claude Code · Research · Source date:

  • Working for over 45 minutes, GPT-5 Pro found correct FEINs for 4 of 6 subsidiaries on the Florida Division of Corporations site and one address via a FINRA BrokerCheck report; the poster double-checked the FEINs.

    GPT-5 Pro · Research · Source date: