manage-blocking

Manages Technitium DNS Server blocking — per-domain allow/block overrides, block list URL management, and global blocking toggle. Also checks whether a specific domain is effectively blocked or allowed.

<quick_start>

/technitium-dns:manage-blocking check example.com
/technitium-dns:manage-blocking allow add example.com
/technitium-dns:manage-blocking allow remove example.com
/technitium-dns:manage-blocking allow list
/technitium-dns:manage-blocking block add malware.example.com
/technitium-dns:manage-blocking block remove malware.example.com
/technitium-dns:manage-blocking block list
/technitium-dns:manage-blocking blocklists
/technitium-dns:manage-blocking blocklists add https://somehost.com/blocklist.txt
/technitium-dns:manage-blocking blocklists remove https://somehost.com/blocklist.txt
/technitium-dns:manage-blocking blocklists update
/technitium-dns:manage-blocking enable
/technitium-dns:manage-blocking disable

</quick_start>

Parse `env=` from `$ARGUMENTS` before any other processing. Strip it from remaining arguments. Default to `""` (empty string). Credential file: `~/.claude/channels/technitium-dns/${ENV}.env`. Omit `env=` from suggested commands when ENV is empty.

Load credentials from the env file. If missing or TECHNITIUM_URL is not set, tell the user to run /technitium-dns:configure-technitium first.

Auth token resolution (before every API call):

• If TECHNITIUM_TOKEN is set, use it directly as $TOKEN.
• Otherwise call /api/user/login with TECHNITIUM_USER/TECHNITIUM_PASSWORD and parse the token field.

Parse the first word of remaining arguments as the subcommand. Parse the second word as a sub-subcommand where applicable.

---

check <domain>

Check whether a domain is on the allow list, the block list, or neither — and do a live resolve to show the effective result.

Run these three calls in sequence:

1. Check allow list:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/allowed/list" \
  token=="$TOKEN" domain=="<domain>"

2. Check block list:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/blocked/list" \
  token=="$TOKEN" domain=="<domain>"

3. Live resolve (effective result):

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/dnsClient/resolve" \
  token=="$TOKEN" server=="this-server" domain=="<domain>" type=="A" protocol=="UDP"

Display a summary table:

Field	Value
Domain	<domain>
Allow override	Yes / No
Block override	Yes / No
Effective result	Blocked / Allowed / (resolved IP or NXDOMAIN)

Determine "Effective result" from the live resolve response:

• If the answer contains 0.0.0.0 or :: → Blocked (AnyAddress blocking)
• If the RCODE is NXDomain and no records → Blocked (NxDomain blocking)
• If the answer contains a real IP → Allowed (show the IP)
• If the answer is empty and RCODE is NoError → Allowed (no records, but not blocked)

Note: a domain can be on the allow list but still appear blocked if blocking is disabled or the entry is overridden. The live resolve shows the ground truth.

---

allow add <domain>

Add a domain to the per-domain allow list (whitelist override — bypasses block lists):

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/allowed/add" \
  token=="$TOKEN" domain=="<domain>"

Confirm success with: "<domain>" added to the allow list.

---

allow remove <domain>

Remove a domain from the per-domain allow list:

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/allowed/delete" \
  token=="$TOKEN" domain=="<domain>"

Confirm success with: "<domain>" removed from the allow list.

---

allow list

List all per-domain allow overrides:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/allowed/list" \
  token=="$TOKEN"

Display as a sorted list of domain names. Show the total count. If empty, say "No allowed domains configured."

---

block add <domain>

Add a domain to the per-domain block list (manual block override):

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/blocked/add" \
  token=="$TOKEN" domain=="<domain>"

Confirm success with: "<domain>" added to the block list.

---

block remove <domain>

Remove a domain from the per-domain block list:

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/blocked/delete" \
  token=="$TOKEN" domain=="<domain>"

Confirm success with: "<domain>" removed from the block list.

---

block list

List all per-domain block overrides:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/blocked/list" \
  token=="$TOKEN"

Display as a sorted list of domain names. Show the total count. If empty, say "No blocked domains configured."

---

blocklists

Show current block list configuration:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/settings/get" \
  token=="$TOKEN"

From the response, display:

Field	Value
Blocking enabled	Yes / No
Blocking type	AnyAddress / NxDomain / CustomAddress
Update interval	<blockListUpdateIntervalHours> hours
Next update	<blockListNextUpdatedOn>
Block list URLs	(numbered list, one per line)

If no URLs are configured, say "No block list URLs configured."

---

blocklists add <url>

Add a URL to the block list. Fetch current settings first to get the existing URL list, append the new URL, then save:

# 1. Get current block list URLs
http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/settings/get" token=="$TOKEN"

# 2. Build new comma-separated list: existing URLs + <url>

# 3. Save updated list
http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/settings/set" \
  token=="$TOKEN" blockListUrls=="<comma-separated-urls>"

Confirm success with: Block list URL added. Run 'blocklists update' to download it now.

---

blocklists remove <url>

Remove a URL from the block list. Fetch current settings first, remove the matching URL, then save:

# 1. Get current block list URLs
http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/settings/get" token=="$TOKEN"

# 2. Build new comma-separated list: existing URLs minus <url>

# 3. If the list would become empty, use blockListUrls=="false" to clear all
http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/settings/set" \
  token=="$TOKEN" blockListUrls=="<comma-separated-urls or false>"

If the URL is not in the current list, say so and abort.

Confirm success with: Block list URL removed.

---

blocklists update

Force an immediate download/refresh of all configured block lists:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/settings/forceUpdateBlockLists" \
  token=="$TOKEN"

Confirm success with: Block lists are being updated in the background.

---

enable

Enable DNS blocking globally:

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/settings/set" \
  token=="$TOKEN" enableBlocking=="true"

Confirm: DNS blocking enabled.

---

disable [minutes=<n>]

Disable DNS blocking. If minutes=<n> is provided, disable temporarily:

Temporary:

http --ignore-stdin -b GET "${TECHNITIUM_URL%/}/api/settings/temporaryDisableBlocking" \
  token=="$TOKEN" minutes=="<n>"

Confirm: DNS blocking temporarily disabled for <n> minute(s).

Permanent:

http --ignore-stdin -b POST "${TECHNITIUM_URL%/}/api/settings/set" \
  token=="$TOKEN" enableBlocking=="false"

Confirm: DNS blocking disabled.

- Domain names should not have a trailing dot — strip it if present. - The allow list is a whitelist that lets domains bypass block list rules. The block list is a manual blacklist that blocks domains regardless of block lists. - Block list URLs added here apply to the globally downloaded block lists (hosts format or plain domain lists). Per-domain overrides (allow/block) take effect immediately without a list update. - If `"status": "invalid-token"`, tell the user the session expired. - If `"status": "error"`, show `errorMessage`. - For `check`, all three API calls can be made in parallel to speed up the response.

<success_criteria>

• check shows allow status, block status, and live resolve result in one table
• allow/block add/remove/list operations work correctly and confirm success
• blocklists shows current URLs and blocking status in a table
• blocklists add/remove reads current settings before modifying to avoid clobbering other URLs
• enable/disable toggle global blocking with optional temporary duration
• API errors surfaced with actionable messages </success_criteria>