@ in the composer to open the Sources menu.
Built-in sources
| Source | Best for | Page |
|---|---|---|
| Web Search | General fresh facts, news, product pages | Web |
| Reddit Search | Real-people opinions, anecdotes, troubleshooting threads | |
| Academic Search | Papers, peer-reviewed work, scholarly answers | — |
| GitHub Search | Code references, repos, issues | — |
| X Search | Breaking news, tech announcements, real-time sentiment | X |
| Prediction Markets | Polymarket / Manifold-style probability signals | — |
| Schedule | Anchor the prompt to a specific date/time window | — |
/ instead of toggling a single source. See Deep Research.
How toggles work
Toggle one or more sources from the@ menu. Your next message is grounded in those sources; toggles reset when you switch chats.
Foundry shows a Sources pill above the composer for every active source so you always know what your next prompt will hit.
Citations
Every reply that used a source gets citations under the answer — clickable links to the source pages, with a short excerpt that the model leaned on.Tips
- Stack sources for harder questions. Web + Reddit gives you both the facts and the lived experience.
- Reset between chats. Sources don’t bleed across chats by design.
- Use Deep Research when one round of search isn’t enough. It fans out, reads, and synthesizes.
Related
Connectors
External services as sources — Exa, Firecrawl, Valyu, more.
Deep Research
The heavyweight option.