NBTecho

Transparency

A search engine you can't audit is a search engine you have to trust blindly. Echo is built so you never have to: every ranking rule, rating source, and summary prompt is open source and explained here.

Bias & factuality labels

Echo never assigns its own bias or factuality ratings. The labels on results summarize the published ratings of independent third parties — AllSides, Media Bias/Fact Check, and Ad Fontes Media — and each entry on the Sources page lists exactly which ratings it draws on, so you can check the originals. Where raters disagree, the consensus rating is used.

Ranking

Results are ranked by plain relevance: how well the title and summary match your query, with a mild boost for recent news. There are no sponsored results, no engagement optimization, and no personalization — the same query returns the same results for everyone. The scoring function is ~40 lines of open-source TypeScript (lib/search.ts).

Echo Summary (NBT Mind)

The one-click summary hands NBT Mind the full result set — every outlet, every bias label — and instructs it to present evidence neutrally, cite sources for every claim, and never editorialize. When no Mind node is reachable, Echo shows a deterministic local digest instead and clearly labels it as aggregation, not AI analysis. Mind is model-agnostic: any open LLM works.

Privacy

Echo stores no search history, sets no tracking cookies, runs no analytics, and calls no ad networks. Queries go to the source providers (your RSS corpus, Wikipedia, arXiv, optionally Brave) only to fetch results, never with an identity attached.

Part of the NBT Platform

News results deep-link to NBT Wires for full-spectrum coverage, and Echo Summaries are powered by NBT Mind. Connections surfaced during search will feed NBT Links as pending edges in a later phase. Everything runs locally-first and decentralized where possible; IPFS caching of high-value sources is on the roadmap.

Non-negotiables