diff --git a/CLAUDE.md b/CLAUDE.md
index 89870c8..1fa4581 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,7 +1,7 @@
 # clawhdf5
 
 ## Purpose
-Pure-Rust HDF5 format implementation with HNSW vector search, WAL-backed persistence, agent memory storage, and GPU-accelerated I/O. A standalone library: no agent framework currently integrates it (OpenClaw and ZeroClaw claims were withdrawn on 2026-09-25 — neither was ever true).
+Pure-Rust HDF5 format implementation with HNSW vector search, WAL-backed persistence, agent memory storage, and GPU-accelerated I/O. A standalone library. Its one verified consumer is ClawBrainHub (`.brain` files); no agent framework integrates it (OpenClaw and ZeroClaw claims were withdrawn on 2026-09-25 — neither was ever true).
 
 ## Architecture
 
@@ -196,5 +196,12 @@ python -c "import clawhdf5; print(clawhdf5.__version__)"
 ```
 
 ## Integration
-None today. OpenClaw and ZeroClaw were both described as consumers; neither
-integrates clawhdf5 (see Key Features and `docs/openclaw.md`).
+- **ClawBrainHub** (`clawverse/clawbrainhub` on git.redclaw.dev) is the one
+  verified consumer: `cbh-core` reads and writes `.brain` files through the
+  facade (`File`, `FileBuilder`, `AttrValue`, `Selection`), `cbh-scanner`
+  uses the facade, and `cbh-cli` uses `clawhdf5_agent::bm25::BM25Index`. It
+  depends on this repo by path (`../clawhdf5`), so it builds against whatever
+  is checked out — changes to those APIs reach it directly. Verified
+  2026-09-25 against main: builds, and its 204 tests pass.
+- OpenClaw and ZeroClaw were both described as consumers; neither integrates
+  clawhdf5 (see Key Features and `docs/openclaw.md`).