AI Agents & Infrastructure
ModelBrain RAG
An HTTP document search API for your apps
- 0community votes
- 1DR by Ahrefs no change since last check
Ahrefs Domain Rating signal 15 Nov 2026, signal shifted 15 Nov 2026.
A free, open source add-on that provides an HTTP API for searching documents locally on your computer with collections, API keys, users and a web interface.
What it is
ModelBrain RAG is a free, open source add-on that provides retrieval-augmented generation (RAG) capabilities through an HTTP API. It enables apps and scripts to search documents stored on your computer, with ModelBrain handling the indexing and searching. The add-on adds collections, API keys, user accounts and a web interface for search and administration.
The server returns passages that best match a query, along with the file each came from, scores and headings. It does not generate answers or contain a language model—you pass the returned passages to a language model of your choice. RAG stands for retrieval-augmented generation: an app looks up passages that bear on a question and hands them to a language model along with the question.
ModelBrain RAG runs locally on your computer only and requires the ModelBrain app. It listens on 127.0.0.1 only, which is your own computer, and makes no outgoing connections. It writes only inside its own documents folder, and shared vaults or partitions are search-only. Version 0.1 is a preview.
Systems
- Search passages that match a query with scores and file references
- Manage collections and add or remove documents over HTTP or web interface
- Share vaults and partitions for search-only access
- API keys with read, write or admin access levels
- Web interface for search and administration
- User account management with three access levels
- Full-text and vector search indexes
- Runs locally on 127.0.0.1 with no outgoing connections
- SHA-256 hashed API keys and scrypt hashed passwords
- Limit lists restrict collections and vaults per user or API key
Pricing
Pricing model: Open source
Want to see what ModelBrain RAG does next? Follow them for milestones, new products and stories by email.
ModelBrain RAG metrics
Signal readout for modelbrain.net: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 1 Domain Rating no change since last check
- 3 Trust Flow no change since last check
- 27 Citation Flow no change since last check
- 17 Referring domains no change since last check
- 51 External backlinks no change since last check
Ahrefs Domain Rating signal 15 Nov 2026, signal shifted 15 Nov 2026. Strongest signal topic: Computers/Internet/On the Web (3). Majestic signal 15 Nov 2026, signal shifted 15 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
ModelBrain RAG domain signal
Show the signal details
Public RDAP record, last read 15 Nov 2026, 03:50 UTC.
- Domain age 2 months
- Registered
- Expires
- Registrar Cloudflare, Inc.
- DNSSEC Not signed
ModelBrain RAG post-launch signal
The record for ModelBrain RAG after its launch on Nexora Launch (15 November 2026), from the readings we keep.
- 1 Domain Rating (Ahrefs)
first measured 15 Nov 2026 - 3 Trust Flow (Majestic)
first measured 15 Nov 2026 - 17 Referring domains (Majestic)
first measured 15 Nov 2026
Day 0 since launch. Next receipt: day 30, 15 Dec 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
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Quick answers
- Does ModelBrain RAG include ModelBrain?
- No. It is a separate, open source add-on. ModelBrain must already be installed, and the add-on talks to it through the same tools any AI assistant uses.
- Does it write answers?
- No. It returns the passages that best match a query, with the file each came from. Your app passes them to the language model of your choice.
- Can other computers reach it?
- No. It listens on 127.0.0.1 only, which is your own computer, and it makes no outgoing connections.
- Can it change my vaults or saved memories?
- No. It writes only inside its own documents folder. Vaults and partitions that an administrator shares are search-only.
ModelBrain RAG has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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