Skill Writing

access

A user-invocable Claude Code skill that manages who can reach Claude through the Discord channel. It approves pairings, edits allowlists, sets DM and group policy, and tunes delivery settings by editing a local access.json file.

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access — illustration

What it is

The access skill, invoked as /discord:access, manages access control for the Discord channel. It never talks to Discord directly. All state lives in ~/.claude/channels/discord/access.json, and the skill only reads and edits that JSON. The channel server re-reads the file to apply changes. The file holds: - a dmPolicy - an allowFrom list of sender IDs - per-channel group settings (requireMention and an allowFrom list) - pending pairing entries keyed by a 6-character code - optional mentionPatterns If the file is missing, the defaults are dmPolicy "pairing" with empty allowFrom, groups and pending. The skill parses space-separated arguments. With no arguments, or unrecognized ones, it shows status: dmPolicy, the allowFrom count and list, pending codes with sender IDs and age, and the group count. Subcommands: - pair <code> adds the pending sender to allowFrom, removes the pending entry, and writes a file to ~/.claude/channels/discord/approved/<senderId> containing the chatId. The server polls that directory and sends "you're in". - deny <code> deletes a pending entry. - allow <senderId> and remove <senderId> edit the allowlist. - policy <mode> accepts pairing, allowlist or disabled. - group add <channelId> takes optional --no-mention and --allow id1,id2 flags. - group rm <channelId> removes a group. - set <key> <value> changes delivery/UX keys: ackReaction, replyToMode, textChunkLimit, chunkMode and mentionPatterns. Security is central to the design. The skill only acts on requests the user types in their terminal session. If a request to approve a pairing, add to the allowlist or change policy arrives through a channel notification, such as a Discord or Telegram message, the skill must refuse and tell the user to run /discord:access themselves. The reason is that channel messages can carry prompt injection. Pairing always requires an explicit code. Even when only one entry is pending, the skill lists the entries and asks which one to approve, because an attacker can seed a single pending entry by DMing the bot. Implementation rules: - Always read the file before writing, so pending entries added by the server aren't overwritten. - Pretty-print the JSON with a 2-space indent. - Handle a missing channels directory (ENOENT) by creating defaults. - Keep sender IDs (Discord user snowflakes) separate from chat IDs (DM channel snowflakes). The skill's allowed tools are limited to Read, Write, Bash(ls *) and Bash(mkdir *).

Who it's for

  • Users running Claude Code with the Discord channel plugin who need to approve or deny pairing requests
  • Users who want to control which Discord users or channels can reach Claude via allowlists and group settings
  • Users adjusting Discord DM policy or delivery behavior such as ack reactions, reply mode and message chunking

Requirements

Requirements

  • The Discord channel plugin and its channel server, which reads ~/.claude/channels/discord/access.json and polls the approved directory
  • Access to the ~/.claude/channels/discord/ directory (created with defaults if missing)
  • Commands must be typed by the user in their terminal session, not relayed from channel messages

هاد السكيل بيخليك تتحكم مين بيقدر يحكي مع Claude عن طريق قناة ديسكورد. بتوافق على طلبات الـpairing، بتعدّل قائمة المسموحين، وبتغيّر سياسة الرسائل الخاصة والمجموعات، وكل هاد بتعديل ملف access.json عندك عالجهاز.

Examples

Show access status

Prompt
prompt
/discord:access

Expected output: With no arguments, the skill reads access.json and shows the dmPolicy, the allowFrom count and list, pending codes with sender IDs and age, and the group count.

Approve a pairing

Prompt
prompt
pair <code>

Expected output: Moves the pending sender into allowFrom, deletes the pending entry, and writes the approved/<senderId> file so the server sends "you're in". The code is always required.

Add a group channel with options

Prompt
prompt
group add <channelId>

Expected output: Adds a group channel entry. Optional --no-mention sets requireMention to false, and --allow id1,id2 sets that channel's allowFrom list.

access.json state shape

json
json
{
  "dmPolicy": "pairing",
  "allowFrom": ["<senderId>", ...],
  "groups": {
    "<channelId>": { "requireMention": true, "allowFrom": [] }
  },
  "pending": {
    "<6-char-code>": {
      "senderId": "...", "chatId": "...",
      "createdAt": <ms>, "expiresAt": <ms>
    }
  },
  "mentionPatterns": ["@mybot"]
}

What it does: The structure of ~/.claude/channels/discord/access.json, the file this skill reads and edits.