Inspiration
AI can summarize the web quickly, but speed is not enough. Teams still need to know which claims came from which source, what confidence level each claim deserves, and which sentences should not be repeated until a human approves them.
Live Web Evidence Agent is built for that gap. It turns a research answer into a visible evidence workflow instead of a black-box paragraph.
What it does
The app turns a research question into:
- source cards
- extracted claims
- confidence labels
- blocked claims
- follow-up search plan
- voice handoff gate
- approval-ready answer
The key product idea is that the answer is not just a paragraph. It is a claim ledger with a clear point where the agent calls a human back in.
How I built it
The current public prototype is a static HTML/CSS/JavaScript app. It includes a refresh script that fetches public DeveloperWeek pages and writes a dated evidence snapshot into data/evidence_snapshot.json. The browser app turns that snapshot into source cards and claim rows.
I also added a human handoff gate. When the agent has blocked claims, it prepares a short resume packet and a browser-side voice prompt. The agent can keep moving until judgment is required, then call a human back to review the exact risky claims.
The intended sponsor integration is Nimble. The next version can connect Nimble Search, Extract, Crawl, Map, Web Search Agents, MCP server, or APIs to populate the same evidence table with live web data.
Challenges
The hardest design choice was not to overclaim. The public static MVP does not claim real Nimble API usage yet. It demonstrates the workflow that live web data should feed, and keeps unsafe claims blocked until a human approves them.
Accomplishments
- Built a working source-led research workflow.
- Added source cards and a claim ledger.
- Added blocked claims and follow-up search planning.
- Added a voice handoff gate and copyable handoff packet.
- Added an approval-ready answer export.
- Published a live app, source repo, release asset, and narrated demo.
- Kept the claim boundary explicit.
Public links
- Live app: https://daideguchi.github.io/live-web-evidence-agent/
- Source code: https://github.com/daideguchi/live-web-evidence-agent
- Demo video: https://youtu.be/td_iwN247TE
- Backup demo asset: https://github.com/daideguchi/live-web-evidence-agent/releases/download/v0.1-submission/live-web-evidence-agent-demo-narrated.mp4
What's next
- Add Nimble API integration.
- Add a backend proxy for safe API calls.
- Store dated source snapshots.
- Export evidence packets for submission and launch teams.
- Connect the handoff packet to local or enterprise notifications.
- Measure time saved for research and submission-review workflows.
Built With
- claim-ledger
- css
- github
- html
- human
- human-handoff
- javascript
- playwright
- python-verification-scripts
- source-cards

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