diff --git a/.claude/skills/StrixCamDB-Add-OUI/SKILL.md b/.claude/skills/StrixCamDB-Add-OUI/SKILL.md
deleted file mode 100644
index c0d1a7c..0000000
--- a/.claude/skills/StrixCamDB-Add-OUI/SKILL.md
+++ /dev/null
@@ -1,92 +0,0 @@
----
-name: StrixCamDB-Add-OUI
-description: Add new MAC prefix (OUI) to brand mappings in oui.json. Use when user wants to add a camera brand's MAC address prefix to the OUI database.
-argument-hint: "[MAC prefix and brand, e.g. 3C:EF:8C Dahua]"
-disable-model-invocation: true
----
-
-# StrixCamDB-Add-OUI
-
-You are editing the OUI database in StrixCamDB. This maps MAC address prefixes to camera brands.
-
-Chat with the user in Russian. All data in files -- in English.
-
----
-
-## FILE
-
-`oui.json` in the repository root. Format:
-
-```json
-{
-  "3C:EF:8C": "Dahua",
-  "44:47:CC": "Hikvision",
-  "00:12:17": "Cisco"
-}
-```
-
-Key: MAC prefix (first 3 octets, uppercase, colon-separated).
-Value: Brand name (human-readable).
-
----
-
-## STEP 1: Collect information
-
-If the user provided details in arguments -- parse them. If not -- ask:
-
-- MAC prefix (e.g. `3C:EF:8C`)
-- Brand name (e.g. `Dahua`)
-
-Multiple entries can be added at once.
-
----
-
-## STEP 2: Validate
-
-1. Read `oui.json`
-2. Check format: prefix must be `XX:XX:XX` (uppercase hex, colon-separated)
-3. If prefix already exists -- warn the user and show current brand mapping
-4. If brand name doesn't match any `brand_id` in `brands/` -- warn but don't block (OUI uses human-readable names, not brand_id)
-5. Normalize prefix to uppercase: `3c:ef:8c` -> `3C:EF:8C`
-
----
-
-## STEP 3: Write
-
-1. Read `oui.json`
-2. Add new entries
-3. Sort keys alphabetically
-4. Write back with 2-space indent, `ensure_ascii: false`, trailing newline
-
----
-
-## STEP 4: Verify
-
-1. Confirm file is valid JSON: `python3 -c "import json; json.load(open('oui.json'))"`
-2. Show the user what was added
-3. Check for inconsistencies -- if user adds a prefix for a brand that has other prefixes, mention them
-
----
-
-## STEP 5: Commit
-
-Ask the user:
-
-- **Commit only** -- commit to main, CI updates cameras.db
-- **Commit + fix version** -- commit and create a version tag
-- **Don't commit** -- leave uncommitted
-
-### Commit message:
-- One entry: `Add OUI prefix {prefix} for {brand}`
-- Multiple: `Add {N} OUI prefixes`
-
-### Rules -- ABSOLUTE:
-- One line, imperative verb, no period at the end
-- No `feat:`, `fix:`, `chore:` prefixes
-- No emoji, no "Co-Authored-By", no mention of AI/Claude
-
----
-
-## CRITICAL RULE
-
-NEVER delete or modify existing OUI entries without explicit user confirmation. You can ONLY ADD new entries by default. If you see something suspicious -- tell the user but don't touch it.
diff --git a/.claude/skills/StrixCamDB-Add/SKILL.md b/.claude/skills/StrixCamDB-Add/SKILL.md
index 876185a..e0446f6 100644
--- a/.claude/skills/StrixCamDB-Add/SKILL.md
+++ b/.claude/skills/StrixCamDB-Add/SKILL.md
@@ -27,7 +27,32 @@ If the user provided details in the command arguments -- parse them and determin
 1. **Add new brand** -- create a new JSON file for a brand that doesn't exist yet
 2. **Add stream URL** -- add a new stream entry to an existing brand
 3. **Add model to stream** -- add a model name to an existing stream's `models` array
-4. **Process contribution issues** -- review and apply data from GitHub issues
+4. **Add OUI prefix** -- add MAC address prefix to brand mapping in `oui.json`
+5. **Process contribution issues** -- review and apply data from GitHub issues
+
+### Adding OUI prefix
+
+When user selects "Add OUI prefix":
+
+1. Ask for MAC prefix (e.g. `3C:EF:8C`) and brand name (e.g. `Dahua`)
+2. Multiple entries can be added at once
+3. Normalize prefix to uppercase: `3c:ef:8c` -> `3C:EF:8C`
+4. Validate format: must be `XX:XX:XX` (uppercase hex, colon-separated)
+5. Read `oui.json`, check if prefix already exists -- if yes, warn and show current mapping
+6. Add new entries, sort keys alphabetically
+7. Write back with 2-space indent, `ensure_ascii: false`, trailing newline
+8. Verify: `python3 -c "import json; json.load(open('oui.json'))"`
+
+**OUI file format** (`oui.json` in repository root):
+
+```json
+{
+  "3C:EF:8C": "Dahua",
+  "44:47:CC": "Hikvision"
+}
+```
+
+Key: MAC prefix (first 3 octets). Value: brand name (human-readable).
 
 ### Processing contribution issues