2 files changed, 14 insertions, 10 deletions

diff --git a/docs/explanation/grasp-02-proactive-sync.md b/docs/explanation/grasp-02-proactive-sync.md
index 98531ec..666b048 100644
--- a/docs/explanation/grasp-02-proactive-sync.md
+++ b/docs/explanation/grasp-02-proactive-sync.md
@@ -758,7 +758,8 @@ The implementation closely follows the design document with the following comple
 
 #### Phase 1: Basic Sync (commit b167f1b)
 - [`SyncManager`](../../src/sync/manager.rs) - Main coordinator for proactive sync
-- Single relay sync via `NGIT_SYNC_RELAY_URL` configuration
+- Bootstrap relay sync via `NGIT_SYNC_BOOTSTRAP_RELAY_URL` configuration
+- Dynamic relay discovery from repository announcements that list our service
 - Event validation through existing [`Nip34WritePolicy`](../../src/nostr/builder.rs)
 
 #### Phase 2: Three-Layer Filters (commit bf558b0)
@@ -844,12 +845,14 @@ All configuration via environment variables or CLI flags:
 
 | Option | Type | Default | Description |
 |--------|------|---------|-------------|
-| `NGIT_SYNC_RELAY_URL` | String | None | Primary sync relay URL |
+| `NGIT_SYNC_BOOTSTRAP_RELAY_URL` | String | None | Bootstrap relay URL for initial sync |
 | `NGIT_SYNC_MAX_BACKOFF_SECS` | u64 | 3600 | Max backoff delay (seconds) |
 | `NGIT_SYNC_STARTUP_DELAY_SECS` | u64 | 30 | Catchup delay after startup |
 | `NGIT_SYNC_RECONNECT_DELAY_SECS` | u64 | 10 | Catchup delay after reconnect |
 | `NGIT_SYNC_RECONNECT_LOOKBACK_DAYS` | u64 | 3 | Days to look back on reconnect |
 
+**Note:** Additional relays are automatically discovered from repository announcements (kind 30617) that list our service domain. The bootstrap relay provides an initial sync source but is not required - sync will discover relays from stored announcements.
+
 ### Module Structure (As Implemented)
 
 ```
diff --git a/docs/reference/configuration.md b/docs/reference/configuration.md
index 80ae45c..204fbd1 100644
--- a/docs/reference/configuration.md
+++ b/docs/reference/configuration.md
@@ -269,28 +269,29 @@ NGIT_DATABASE_BACKEND=lmdb
 
 These options configure the proactive sync feature that synchronizes events from other relays.
 
-#### `NGIT_SYNC_RELAY_URL`
+#### `NGIT_SYNC_BOOTSTRAP_RELAY_URL`
 
-**Description:** URL of the primary relay to sync events from
+**Description:** URL of the bootstrap relay to initially sync events from
 **Type:** String (WebSocket URL)
-**Default:** None (sync disabled)
+**Default:** None (relay discovery only)
 **Required:** No
 
 **Examples:**
 ```bash
 # Sync from a public relay
-NGIT_SYNC_RELAY_URL=wss://relay.example.com
+NGIT_SYNC_BOOTSTRAP_RELAY_URL=wss://relay.example.com
 
 # Sync from another GRASP relay
-NGIT_SYNC_RELAY_URL=wss://git.nostr.dev
+NGIT_SYNC_BOOTSTRAP_RELAY_URL=wss://git.nostr.dev
 
 # Local testing
-NGIT_SYNC_RELAY_URL=ws://127.0.0.1:8081
+NGIT_SYNC_BOOTSTRAP_RELAY_URL=ws://127.0.0.1:8081
 ```
 
 **Notes:**
-- When set, enables proactive sync feature
-- The relay will discover additional relays from repository announcements
+- Bootstrap relay provides initial sync source on startup
+- Additional relays are **automatically discovered** from repository announcements that list our service
+- Even without a bootstrap relay, sync will discover relays from stored announcements
 - Synced events go through the same validation as directly-submitted events
 - Use WebSocket protocol (`ws://` or `wss://`)