feat: add subagent model selection guidance for cost optimization

Global AGENTS.md: task-type-to-model-tier mapping table with decision rule — haiku for search/status, sonnet for standard coding/review, opus only for complex architecture and security. Claude RUNTIME.md: Task tool model parameter syntax with examples and quick reference table. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
feat: add Cloudflare DNS tool suite with multi-instance support
2026-02-23 07:37:44 -06:00 · 2026-02-22 21:31:52 -06:00
11 changed files with 595 additions and 3 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -130,6 +130,26 @@ Load additional guides when the task requires them.
 - Installation and configuration are managed by Mosaic bootstrap and runtime linking.
 - If sequential-thinking is unavailable, you MUST report the failure and stop planning-intensive execution.

+## Subagent Model Selection (Cost Optimization — Hard Rule)
+
+When delegating work to subagents, you MUST select the cheapest model capable of completing the task. Do NOT default to the most expensive model for every delegation.
+
+| Task Type | Model Tier | Rationale |
+|-----------|-----------|-----------|
+| File search, grep, glob, codebase exploration | **haiku** | Read-only, pattern matching, no reasoning depth needed |
+| Status checks, health monitoring, heartbeat | **haiku** | Structured API calls, pass/fail output |
+| Simple code fixes (typos, rename, one-liner) | **haiku** | Minimal reasoning, mechanical changes |
+| Code review, lint, style checks | **sonnet** | Needs judgment but not deep architectural reasoning |
+| Test writing, test fixes | **sonnet** | Pattern-based, moderate complexity |
+| Standard feature implementation | **sonnet** | Good balance of capability and cost for most coding |
+| Complex architecture, multi-file refactors | **opus** | Requires deep reasoning, large context, design judgment |
+| Security review, auth logic | **opus** | High-stakes reasoning where mistakes are costly |
+| Ambiguous requirements, design decisions | **opus** | Needs nuanced judgment and tradeoff analysis |
+
+**Decision rule**: Start with the cheapest viable tier. Only escalate if the task genuinely requires deeper reasoning — not as a safety default. Most coding tasks are sonnet-tier. Reserve opus for work where wrong answers are expensive.
+
+**Runtime-specific syntax**: See the runtime reference for how to specify model tier when spawning subagents (e.g., Claude Code Task tool `model` parameter).
+
 ## Skills Policy

 - Use only the minimum required skills for the active task.
--- a/TOOLS.md
+++ b/TOOLS.md
@@ -72,6 +72,27 @@ Mosaic wrappers at `~/.config/mosaic/tools/git/*.sh` handle platform detection a
 ~/.config/mosaic/tools/woodpecker/pipeline-trigger.sh -b <branch>
 ```

+### DNS — Cloudflare
+
+Multi-instance support: `-a <instance>` selects a named instance (e.g. `personal`, `work`). Omit `-a` to use the default from `cloudflare.default` in credentials.json.
+
+```bash
+# List zones (domains)
+~/.config/mosaic/tools/cloudflare/zone-list.sh [-a instance]
+
+# List DNS records (zone by name or ID)
+~/.config/mosaic/tools/cloudflare/record-list.sh -z <zone> [-a instance] [-t type] [-n name]
+
+# Create DNS record
+~/.config/mosaic/tools/cloudflare/record-create.sh -z <zone> -t <type> -n <name> -c <content> [-a instance] [-p] [-l ttl] [-P priority]
+
+# Update DNS record
+~/.config/mosaic/tools/cloudflare/record-update.sh -z <zone> -r <record-id> -t <type> -n <name> -c <content> [-a instance] [-p] [-l ttl]
+
+# Delete DNS record
+~/.config/mosaic/tools/cloudflare/record-delete.sh -z <zone> -r <record-id> [-a instance]
+```
+
 ### IT Service — GLPI

 ```bash
@@ -100,7 +121,7 @@ Mosaic wrappers at `~/.config/mosaic/tools/git/*.sh` handle platform detection a
 # Source in any script to load service credentials
 source ~/.config/mosaic/tools/_lib/credentials.sh
 load_credentials <service-name>
-# Supported: portainer, coolify, authentik, glpi, github, gitea-mosaicstack, gitea-usc, woodpecker
+# Supported: portainer, coolify, authentik, glpi, github, gitea-mosaicstack, gitea-usc, woodpecker, cloudflare
 ```

 ## Git Providers
--- a/guides/INFRASTRUCTURE.md
+++ b/guides/INFRASTRUCTURE.md
@@ -153,6 +153,75 @@ The human is escalation-only for missing access, hard policy conflicts, or irrev
 - Magic variables (`SERVICE_FQDN_*`) require list-style env syntax, not dict-style
 - Rate limit: 200 requests per interval

+### Cloudflare DNS Operations
+
+Use the Cloudflare tools for any DNS configuration: pointing domains at services, adding TXT verification records, managing MX records, etc.
+
+**Multi-instance support**: Credentials support named instances (e.g. `personal`, `work`). A `default` key in credentials.json determines which instance is used when `-a` is omitted. Pass `-a <instance>` to target a specific account.
+
+```bash
+# List all zones (domains) in the account
+~/.config/mosaic/tools/cloudflare/zone-list.sh [-a instance]
+
+# List DNS records for a zone (accepts zone name or ID)
+~/.config/mosaic/tools/cloudflare/record-list.sh -z <zone> [-t type] [-n name]
+
+# Create a DNS record
+~/.config/mosaic/tools/cloudflare/record-create.sh -z <zone> -t <type> -n <name> -c <content> [-p] [-l ttl] [-P priority]
+
+# Update a DNS record (requires record ID from record-list)
+~/.config/mosaic/tools/cloudflare/record-update.sh -z <zone> -r <record-id> -t <type> -n <name> -c <content> [-p]
+
+# Delete a DNS record
+~/.config/mosaic/tools/cloudflare/record-delete.sh -z <zone> -r <record-id>
+```
+
+**Flag reference:**
+
+| Flag | Purpose |
+|------|---------|
+| `-z` | Zone name (e.g. `mosaicstack.dev`) or 32-char zone ID |
+| `-a` | Named Cloudflare instance (omit for default) |
+| `-t` | Record type: `A`, `AAAA`, `CNAME`, `MX`, `TXT`, `SRV`, etc. |
+| `-n` | Record name: short (`app`) or FQDN (`app.example.com`) |
+| `-c` | Record content/value (IP, hostname, TXT string, etc.) |
+| `-r` | Record ID (from `record-list.sh` output) |
+| `-p` | Enable Cloudflare proxy (orange cloud) — omit for DNS-only (grey cloud) |
+| `-l` | TTL in seconds (default: `1` = auto) |
+| `-P` | Priority for MX/SRV records |
+| `-f` | Output format: `table` (default) or `json` |
+
+**Common workflows:**
+
+```bash
+# Point a new subdomain at a server (proxied through Cloudflare)
+~/.config/mosaic/tools/cloudflare/record-create.sh \
+  -z example.com -t A -n myapp -c 203.0.113.10 -p
+
+# Add a TXT record for domain verification (never proxied)
+~/.config/mosaic/tools/cloudflare/record-create.sh \
+  -z example.com -t TXT -n _verify -c "verification=abc123"
+
+# Check what records exist before making changes
+~/.config/mosaic/tools/cloudflare/record-list.sh -z example.com -t CNAME
+
+# Update an existing record (get record ID from record-list first)
+~/.config/mosaic/tools/cloudflare/record-update.sh \
+  -z example.com -r <record-id> -t A -n myapp -c 10.0.0.5 -p
+```
+
+**DNS + Deployment integration**: When deploying a new service via Coolify or Portainer that needs a public domain, the typical sequence is:
+
+1. Create the DNS record pointing at the host IP (with `-p` for Cloudflare proxy if desired)
+2. Deploy the service via Coolify/Portainer
+3. Verify the domain resolves and the service is reachable
+
+**Proxy (`-p`) guidance:**
+
+- Use proxy (orange cloud) for web services — provides CDN, DDoS protection, and hides origin IP
+- Skip proxy (grey cloud) for non-HTTP services (mail, SSH), wildcard records, or when the service handles its own TLS termination and needs direct client IP visibility
+- Proxy is NOT compatible with non-standard ports outside Cloudflare's supported range
+
 ### Stack Health Check

 Verify all infrastructure services are reachable:
--- a/runtime/claude/RUNTIME.md
+++ b/runtime/claude/RUNTIME.md
@@ -16,6 +16,36 @@ This file applies only to Claude runtime behavior.
 8. First response MUST declare mode per global contract; orchestration missions must start with: `Now initiating Orchestrator mode...`
 9. Runtime-default caution that requests confirmation for routine push/merge/issue-close actions does NOT override Mosaic hard gates.

+## Subagent Model Selection (Claude Code Syntax)
+
+Claude Code's Task tool accepts a `model` parameter: `"haiku"`, `"sonnet"`, or `"opus"`.
+
+You MUST set this parameter according to the model selection table in `~/.config/mosaic/AGENTS.md`. Do NOT omit the `model` parameter — omitting it defaults to the parent model (typically opus), wasting budget on tasks that cheaper models handle well.
+
+**Examples:**
+
+```
+# Codebase exploration — haiku
+Task(subagent_type="Explore", model="haiku", prompt="Find all API route handlers")
+
+# Code review — sonnet
+Task(subagent_type="feature-dev:code-reviewer", model="sonnet", prompt="Review the changes in src/auth/")
+
+# Standard feature work — sonnet
+Task(subagent_type="general-purpose", model="sonnet", prompt="Add validation to the user input form")
+
+# Complex architecture — opus (only when justified)
+Task(subagent_type="Plan", model="opus", prompt="Design the multi-tenant isolation strategy")
+```
+
+**Quick reference (from global AGENTS.md):**
+
+| haiku | sonnet | opus |
+|-------|--------|------|
+| Search, grep, glob | Code review | Complex architecture |
+| Status/health checks | Test writing | Security/auth logic |
+| Simple one-liner fixes | Standard features | Ambiguous design decisions |
+
 ## Memory Override

 Do NOT write durable memory to `~/.claude/projects/*/memory/`. All durable memory MUST be written to `~/.config/mosaic/memory/` per `~/.config/mosaic/guides/MEMORY.md`. Claude Code's native auto-memory locations are volatile runtime silos and MUST NOT be used for cross-session or cross-agent retention.
--- a/tools/_lib/credentials.sh
+++ b/tools/_lib/credentials.sh
@@ -10,7 +10,7 @@
 #
 # Supported services:
 #   portainer, coolify, authentik, glpi, github,
-#   gitea-mosaicstack, gitea-usc, woodpecker
+#   gitea-mosaicstack, gitea-usc, woodpecker, cloudflare
 #
 # After loading, service-specific env vars are exported.
 # Run `load_credentials --help` for details.
@@ -49,6 +49,8 @@ Services and exported variables:
  gitea-mosaicstack → GITEA_URL, GITEA_TOKEN
  gitea-usc         → GITEA_URL, GITEA_TOKEN
  woodpecker        → WOODPECKER_URL, WOODPECKER_TOKEN
+  cloudflare        → CLOUDFLARE_API_TOKEN (uses default instance)
+  cloudflare-<name> → CLOUDFLARE_API_TOKEN (specific instance, e.g. cloudflare-personal)
 EOF
    return 0
  fi
@@ -110,9 +112,25 @@ EOF
      [[ -n "$WOODPECKER_URL" ]] || { echo "Error: woodpecker.url not found" >&2; return 1; }
      [[ -n "$WOODPECKER_TOKEN" ]] || { echo "Error: woodpecker.token not found" >&2; return 1; }
      ;;
+    cloudflare-*)
+      local cf_instance="${service#cloudflare-}"
+      export CLOUDFLARE_API_TOKEN="${CLOUDFLARE_API_TOKEN:-$(_mosaic_read_cred ".cloudflare.${cf_instance}.api_token")}"
+      export CLOUDFLARE_INSTANCE="$cf_instance"
+      [[ -n "$CLOUDFLARE_API_TOKEN" ]] || { echo "Error: cloudflare.${cf_instance}.api_token not found" >&2; return 1; }
+      ;;
+    cloudflare)
+      # Resolve default instance, then load it
+      local cf_default
+      cf_default="${CLOUDFLARE_INSTANCE:-$(_mosaic_read_cred '.cloudflare.default')}"
+      if [[ -z "$cf_default" ]]; then
+        echo "Error: cloudflare.default not set and no CLOUDFLARE_INSTANCE env var" >&2
+        return 1
+      fi
+      load_credentials "cloudflare-${cf_default}"
+      ;;
    *)
      echo "Error: Unknown service '$service'" >&2
-      echo "Supported: portainer, coolify, authentik, glpi, github, gitea-mosaicstack, gitea-usc, woodpecker" >&2
+      echo "Supported: portainer, coolify, authentik, glpi, github, gitea-mosaicstack, gitea-usc, woodpecker, cloudflare, cloudflare-<name>" >&2
      return 1
      ;;
  esac
--- a/tools/cloudflare/_lib.sh
+++ b/tools/cloudflare/_lib.sh
@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+#
+# _lib.sh — Shared helpers for Cloudflare tool scripts
+#
+# Usage: source "$(dirname "$0")/_lib.sh"
+#
+# Provides:
+#   CF_API                          — Base API URL
+#   cf_auth                         — Authorization header value
+#   cf_load_instance <instance>     — Load credentials for a specific or default instance
+#   cf_resolve_zone <name_or_id>    — Resolves a zone name to its ID (passes IDs through)
+
+CF_API="https://api.cloudflare.com/client/v4"
+
+cf_auth() {
+  echo "Bearer $CLOUDFLARE_API_TOKEN"
+}
+
+# Load credentials for a Cloudflare instance.
+# If instance is empty, loads the default.
+cf_load_instance() {
+  local instance="$1"
+  if [[ -n "$instance" ]]; then
+    load_credentials "cloudflare-${instance}"
+  else
+    load_credentials cloudflare
+  fi
+}
+
+# Resolve a zone name (e.g. "mosaicstack.dev") to its zone ID.
+# If the input is already a 32-char hex ID, passes it through.
+cf_resolve_zone() {
+  local input="$1"
+
+  # If it looks like a zone ID (32 hex chars), pass through
+  if [[ "$input" =~ ^[0-9a-f]{32}$ ]]; then
+    echo "$input"
+    return 0
+  fi
+
+  # Resolve by name
+  local response
+  response=$(curl -s -w "\n%{http_code}" \
+    -H "Authorization: $(cf_auth)" \
+    -H "Content-Type: application/json" \
+    "${CF_API}/zones?name=${input}&status=active")
+
+  local http_code
+  http_code=$(echo "$response" | tail -n1)
+  local body
+  body=$(echo "$response" | sed '$d')
+
+  if [[ "$http_code" != "200" ]]; then
+    echo "Error: Failed to resolve zone '$input' (HTTP $http_code)" >&2
+    return 1
+  fi
+
+  local zone_id
+  zone_id=$(echo "$body" | jq -r '.result[0].id // empty')
+
+  if [[ -z "$zone_id" ]]; then
+    echo "Error: Zone '$input' not found" >&2
+    return 1
+  fi
+
+  echo "$zone_id"
+}
--- a/tools/cloudflare/record-create.sh
+++ b/tools/cloudflare/record-create.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+#
+# record-create.sh — Create a DNS record in a Cloudflare zone
+#
+# Usage: record-create.sh -z <zone> -t <type> -n <name> -c <content> [-a instance] [-l ttl] [-p] [-P priority]
+#
+# Options:
+#   -z zone       Zone name or ID (required)
+#   -t type       Record type: A, AAAA, CNAME, MX, TXT, etc. (required)
+#   -n name       Record name, e.g. "app" or "app.example.com" (required)
+#   -c content    Record value/content (required)
+#   -a instance   Cloudflare instance name (default: uses credentials default)
+#   -l ttl        TTL in seconds (default: 1 = auto)
+#   -p            Enable Cloudflare proxy (orange cloud)
+#   -P priority   MX/SRV priority (default: 10)
+#   -h            Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+source "$(dirname "$0")/_lib.sh"
+
+ZONE=""
+INSTANCE=""
+TYPE=""
+NAME=""
+CONTENT=""
+TTL=1
+PROXIED=false
+PRIORITY=""
+
+while getopts "z:a:t:n:c:l:pP:h" opt; do
+  case $opt in
+    z) ZONE="$OPTARG" ;;
+    a) INSTANCE="$OPTARG" ;;
+    t) TYPE="$OPTARG" ;;
+    n) NAME="$OPTARG" ;;
+    c) CONTENT="$OPTARG" ;;
+    l) TTL="$OPTARG" ;;
+    p) PROXIED=true ;;
+    P) PRIORITY="$OPTARG" ;;
+    h) head -18 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 -z <zone> -t <type> -n <name> -c <content> [-a instance] [-l ttl] [-p] [-P priority]" >&2; exit 1 ;;
+  esac
+done
+
+if [[ -z "$ZONE" || -z "$TYPE" || -z "$NAME" || -z "$CONTENT" ]]; then
+  echo "Error: -z, -t, -n, and -c are all required" >&2
+  exit 1
+fi
+
+cf_load_instance "$INSTANCE"
+ZONE_ID=$(cf_resolve_zone "$ZONE") || exit 1
+
+# Build JSON payload
+payload=$(jq -n \
+  --arg type "$TYPE" \
+  --arg name "$NAME" \
+  --arg content "$CONTENT" \
+  --argjson ttl "$TTL" \
+  --argjson proxied "$PROXIED" \
+  '{type: $type, name: $name, content: $content, ttl: $ttl, proxied: $proxied}')
+
+# Add priority for MX/SRV records
+if [[ -n "$PRIORITY" ]]; then
+  payload=$(echo "$payload" | jq --argjson priority "$PRIORITY" '. + {priority: $priority}')
+fi
+
+response=$(curl -s -w "\n%{http_code}" \
+  -X POST \
+  -H "Authorization: $(cf_auth)" \
+  -H "Content-Type: application/json" \
+  -d "$payload" \
+  "${CF_API}/zones/${ZONE_ID}/dns_records")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to create record (HTTP $http_code)" >&2
+  echo "$body" | jq -r '.errors[]?.message // empty' 2>/dev/null >&2
+  exit 1
+fi
+
+record_id=$(echo "$body" | jq -r '.result.id')
+echo "Created $TYPE record: $NAME → $CONTENT (ID: $record_id)"
--- a/tools/cloudflare/record-delete.sh
+++ b/tools/cloudflare/record-delete.sh
@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+#
+# record-delete.sh — Delete a DNS record from a Cloudflare zone
+#
+# Usage: record-delete.sh -z <zone> -r <record-id> [-a instance]
+#
+# Options:
+#   -z zone       Zone name or ID (required)
+#   -r record-id  DNS record ID (required)
+#   -a instance   Cloudflare instance name (default: uses credentials default)
+#   -h            Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+source "$(dirname "$0")/_lib.sh"
+
+ZONE=""
+INSTANCE=""
+RECORD_ID=""
+
+while getopts "z:a:r:h" opt; do
+  case $opt in
+    z) ZONE="$OPTARG" ;;
+    a) INSTANCE="$OPTARG" ;;
+    r) RECORD_ID="$OPTARG" ;;
+    h) head -11 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 -z <zone> -r <record-id> [-a instance]" >&2; exit 1 ;;
+  esac
+done
+
+if [[ -z "$ZONE" || -z "$RECORD_ID" ]]; then
+  echo "Error: -z and -r are both required" >&2
+  exit 1
+fi
+
+cf_load_instance "$INSTANCE"
+ZONE_ID=$(cf_resolve_zone "$ZONE") || exit 1
+
+response=$(curl -s -w "\n%{http_code}" \
+  -X DELETE \
+  -H "Authorization: $(cf_auth)" \
+  -H "Content-Type: application/json" \
+  "${CF_API}/zones/${ZONE_ID}/dns_records/${RECORD_ID}")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to delete record (HTTP $http_code)" >&2
+  echo "$body" | jq -r '.errors[]?.message // empty' 2>/dev/null >&2
+  exit 1
+fi
+
+echo "Deleted DNS record $RECORD_ID from zone $ZONE"
--- a/tools/cloudflare/record-list.sh
+++ b/tools/cloudflare/record-list.sh
@@ -0,0 +1,81 @@
+#!/usr/bin/env bash
+#
+# record-list.sh — List DNS records for a Cloudflare zone
+#
+# Usage: record-list.sh -z <zone> [-a instance] [-t type] [-n name] [-f format]
+#
+# Options:
+#   -z zone       Zone name or ID (required)
+#   -a instance   Cloudflare instance name (default: uses credentials default)
+#   -t type       Filter by record type (A, AAAA, CNAME, MX, TXT, etc.)
+#   -n name       Filter by record name
+#   -f format     Output format: table (default), json
+#   -h            Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+source "$(dirname "$0")/_lib.sh"
+
+ZONE=""
+INSTANCE=""
+TYPE=""
+NAME=""
+FORMAT="table"
+
+while getopts "z:a:t:n:f:h" opt; do
+  case $opt in
+    z) ZONE="$OPTARG" ;;
+    a) INSTANCE="$OPTARG" ;;
+    t) TYPE="$OPTARG" ;;
+    n) NAME="$OPTARG" ;;
+    f) FORMAT="$OPTARG" ;;
+    h) head -14 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 -z <zone> [-a instance] [-t type] [-n name] [-f format]" >&2; exit 1 ;;
+  esac
+done
+
+if [[ -z "$ZONE" ]]; then
+  echo "Error: -z zone is required" >&2
+  exit 1
+fi
+
+cf_load_instance "$INSTANCE"
+ZONE_ID=$(cf_resolve_zone "$ZONE") || exit 1
+
+# Build query params
+params="per_page=100"
+[[ -n "$TYPE" ]] && params="${params}&type=${TYPE}"
+[[ -n "$NAME" ]] && params="${params}&name=${NAME}"
+
+response=$(curl -s -w "\n%{http_code}" \
+  -H "Authorization: $(cf_auth)" \
+  -H "Content-Type: application/json" \
+  "${CF_API}/zones/${ZONE_ID}/dns_records?${params}")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to list records (HTTP $http_code)" >&2
+  echo "$body" | jq -r '.errors[]?.message // empty' 2>/dev/null >&2
+  exit 1
+fi
+
+if [[ "$FORMAT" == "json" ]]; then
+  echo "$body" | jq '.result'
+  exit 0
+fi
+
+echo "RECORD ID                         TYPE   NAME                                    CONTENT                          PROXIED  TTL"
+echo "--------------------------------  -----  --------------------------------------  -------------------------------  -------  -----"
+echo "$body" | jq -r '.result[] | [
+  .id,
+  .type,
+  .name,
+  .content,
+  (if .proxied then "yes" else "no" end),
+  (if .ttl == 1 then "auto" else (.ttl | tostring) end)
+] | @tsv' | while IFS=$'\t' read -r id type name content proxied ttl; do
+  printf "%-32s  %-5s  %-38s  %-31s  %-7s  %s\n" "$id" "$type" "${name:0:38}" "${content:0:31}" "$proxied" "$ttl"
+done
--- a/tools/cloudflare/record-update.sh
+++ b/tools/cloudflare/record-update.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+#
+# record-update.sh — Update a DNS record in a Cloudflare zone
+#
+# Usage: record-update.sh -z <zone> -r <record-id> -t <type> -n <name> -c <content> [-a instance] [-l ttl] [-p] [-P priority]
+#
+# Options:
+#   -z zone       Zone name or ID (required)
+#   -r record-id  DNS record ID (required)
+#   -t type       Record type: A, AAAA, CNAME, MX, TXT, etc. (required)
+#   -n name       Record name (required)
+#   -c content    Record value/content (required)
+#   -a instance   Cloudflare instance name (default: uses credentials default)
+#   -l ttl        TTL in seconds (default: 1 = auto)
+#   -p            Enable Cloudflare proxy (orange cloud)
+#   -P priority   MX/SRV priority
+#   -h            Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+source "$(dirname "$0")/_lib.sh"
+
+ZONE=""
+INSTANCE=""
+RECORD_ID=""
+TYPE=""
+NAME=""
+CONTENT=""
+TTL=1
+PROXIED=false
+PRIORITY=""
+
+while getopts "z:a:r:t:n:c:l:pP:h" opt; do
+  case $opt in
+    z) ZONE="$OPTARG" ;;
+    a) INSTANCE="$OPTARG" ;;
+    r) RECORD_ID="$OPTARG" ;;
+    t) TYPE="$OPTARG" ;;
+    n) NAME="$OPTARG" ;;
+    c) CONTENT="$OPTARG" ;;
+    l) TTL="$OPTARG" ;;
+    p) PROXIED=true ;;
+    P) PRIORITY="$OPTARG" ;;
+    h) head -18 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 -z <zone> -r <record-id> -t <type> -n <name> -c <content> [-a instance]" >&2; exit 1 ;;
+  esac
+done
+
+if [[ -z "$ZONE" || -z "$RECORD_ID" || -z "$TYPE" || -z "$NAME" || -z "$CONTENT" ]]; then
+  echo "Error: -z, -r, -t, -n, and -c are all required" >&2
+  exit 1
+fi
+
+cf_load_instance "$INSTANCE"
+ZONE_ID=$(cf_resolve_zone "$ZONE") || exit 1
+
+payload=$(jq -n \
+  --arg type "$TYPE" \
+  --arg name "$NAME" \
+  --arg content "$CONTENT" \
+  --argjson ttl "$TTL" \
+  --argjson proxied "$PROXIED" \
+  '{type: $type, name: $name, content: $content, ttl: $ttl, proxied: $proxied}')
+
+if [[ -n "$PRIORITY" ]]; then
+  payload=$(echo "$payload" | jq --argjson priority "$PRIORITY" '. + {priority: $priority}')
+fi
+
+response=$(curl -s -w "\n%{http_code}" \
+  -X PUT \
+  -H "Authorization: $(cf_auth)" \
+  -H "Content-Type: application/json" \
+  -d "$payload" \
+  "${CF_API}/zones/${ZONE_ID}/dns_records/${RECORD_ID}")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to update record (HTTP $http_code)" >&2
+  echo "$body" | jq -r '.errors[]?.message // empty' 2>/dev/null >&2
+  exit 1
+fi
+
+echo "Updated $TYPE record: $NAME → $CONTENT (ID: $RECORD_ID)"
--- a/tools/cloudflare/zone-list.sh
+++ b/tools/cloudflare/zone-list.sh
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+#
+# zone-list.sh — List Cloudflare zones (domains)
+#
+# Usage: zone-list.sh [-a instance] [-f format]
+#
+# Options:
+#   -a instance   Cloudflare instance name (default: uses credentials default)
+#   -f format     Output format: table (default), json
+#   -h            Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+source "$(dirname "$0")/_lib.sh"
+
+INSTANCE=""
+FORMAT="table"
+
+while getopts "a:f:h" opt; do
+  case $opt in
+    a) INSTANCE="$OPTARG" ;;
+    f) FORMAT="$OPTARG" ;;
+    h) head -10 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 [-a instance] [-f format]" >&2; exit 1 ;;
+  esac
+done
+
+cf_load_instance "$INSTANCE"
+
+response=$(curl -s -w "\n%{http_code}" \
+  -H "Authorization: $(cf_auth)" \
+  -H "Content-Type: application/json" \
+  "${CF_API}/zones?per_page=50")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to list zones (HTTP $http_code)" >&2
+  echo "$body" | jq -r '.errors[]?.message // empty' 2>/dev/null >&2
+  exit 1
+fi
+
+if [[ "$FORMAT" == "json" ]]; then
+  echo "$body" | jq '.result'
+  exit 0
+fi
+
+echo "ZONE ID                           NAME                          STATUS    PLAN"
+echo "--------------------------------  ----------------------------  --------  ----------"
+echo "$body" | jq -r '.result[] | [
+  .id,
+  .name,
+  .status,
+  .plan.name
+] | @tsv' | while IFS=$'\t' read -r id name status plan; do
+  printf "%-32s  %-28s  %-8s  %s\n" "$id" "$name" "$status" "$plan"
+done