Discord API Skill

Use this skill to run Discord REST operations through uxc + OpenAPI.

Reuse the uxc skill for shared execution, auth, and error-handling guidance.

Prerequisites

uxc is installed and available in PATH.
Network access to https://discord.com/api/v10.
Access to Discord OpenAPI spec URL:
- https://raw.githubusercontent.com/discord/discord-api-spec/main/specs/openapi.json
Discord bot token (recommended) or OAuth2 user authentication (limited functionality).

Authentication

Option 1: Bot Token (Recommended)

Bot token provides full access to Discord API including reading messages, managing servers, sending messages, and all administrative operations. This is the recommended method for most use cases.

Create a bot application at https://discord.com/developers/applications
Generate a bot token from the Bot section
Configure bot credential:

uxc auth credential set discord-bot \
  --auth-type api_key \
  --header "Authorization=Bot {{secret}}" \
  --secret "YOUR_BOT_TOKEN_HERE"

Bind credential to Discord API endpoint:

uxc auth binding add \
  --id discord-bot \
  --host discord.com \
  --path-prefix /api/v10 \
  --scheme https \
  --credential discord-bot \
  --priority 100

Option 2: OAuth2 User Authentication (Limited Use Cases)

Important: User OAuth2 has significant limitations and is not recommended for most operations:

❌ Cannot read channel messages via HTTP API (local RPC only)
❌ Cannot send messages or manage servers
✅ Can read user profile, email, connections
✅ Can list user's servers

Only use OAuth2 if you specifically need to access user profile information as the user. For all other operations, use Bot Token.

If you still need OAuth2 for user profile operations:

Configuration:

Client ID: 1479302369723285736
Redirect URI: http://127.0.0.1:11111/callback

OAuth2 Scopes:

Discord user OAuth2 supports read-only operations. It cannot send messages or manage servers as a user (use Bot Token for those operations).

Recommended Scopes (Full Functionality):

--scope "identify email connections guilds guilds.members.read messages.read openid"

Minimal Read-Only Scopes:

--scope "identify email connections guilds guilds.members.read"

Scope Reference:

Scope	Description	Write Operation
`identify`	Basic user info (username, avatar, etc.)	❌ Read
`email`	User's email address	❌ Read
`connections`	Linked third-party accounts (Twitch, YouTube, etc.)	❌ Read
`guilds`	User's server list	❌ Read
`guilds.join`	Join user to servers (requires the same application's bot to already be in that guild)	✅ Write
`guilds.members.read`	User's member info in servers	❌ Read
`messages.read`	Read messages (local RPC only, not HTTP API)	❌ Read
`openid`	OpenID Connect support	❌ Read

Note: User OAuth2 cannot send messages or manage servers as the user. Use Bot Token for write operations. guilds.join is a special user OAuth write capability that depends on the same application's bot already being in the target guild, so it is not part of the default read-only flow. See Discord OAuth2 documentation for complete scope list.

Two-Stage OAuth Flow (Agent-Friendly):

Start OAuth flow with desired scopes:

uxc auth oauth start discord-user \
  --endpoint https://discord.com/api/oauth2/token \
  --client-id 1479302369723285736 \
  --redirect-uri http://127.0.0.1:11111/callback \
  --scope "identify email connections guilds guilds.members.read messages.read openid"

Open the displayed authorization URL in browser, complete authorization, then copy the callback URL from browser address bar.
Complete OAuth flow:

uxc auth oauth complete discord-user \
  --session-id <session_id_from_step_1> \
  --authorization-response "<callback_url_from_browser>"

Bind credential:

uxc auth binding add \
  --id discord-user \
  --host discord.com \
  --path-prefix /api/v10 \
  --scheme https \
  --credential discord-user \
  --priority 100

Interactive Alternative (Local Terminal Only):

uxc auth oauth login discord-user \
  --endpoint https://discord.com/api/oauth2/token \
  --flow authorization_code \
  --client-id 1479302369723285736 \
  --redirect-uri http://127.0.0.1:11111/callback \
  --scope "identify email connections guilds guilds.members.read messages.read openid"

Then paste the callback URL when prompted.

Core Workflow

Use fixed link command by default:
- command -v discord-openapi-cli
- If missing, create it: uxc link discord-openapi-cli https://discord.com/api/v10 --schema-url https://raw.githubusercontent.com/discord/discord-api-spec/main/specs/openapi.json
- discord-openapi-cli -h
Discover operations with schema mapping:
- discord-openapi-cli -h
Inspect operation schema first:
- discord-openapi-cli get:/users/@me -h
- discord-openapi-cli post:/channels/{channel_id}/messages -h
Execute operation:
- connectivity check (no auth): discord-openapi-cli get:/gateway
- key/value: discord-openapi-cli get:/guilds/{guild_id}/channels guild_id=GUILD_ID
- positional JSON: discord-openapi-cli post:/channels/{channel_id}/messages '{"channel_id":"CHANNEL_ID","content":"Hello from uxc"}'
- binding check when auth looks wrong: uxc auth binding match https://discord.com/api/v10

Authentication Methods Comparison

Feature	Bot Token	User OAuth2
Read channel messages	✅ Full access	❌ Not via HTTP API
Send messages	✅ As the bot	❌ Not supported
Manage channels/roles	✅ Bot permissions	❌ Not supported
Moderation actions	✅ Bot permissions	❌ Not supported
List servers	✅ Servers bot is in	✅ User's servers
Read user info	❌ Not available	✅ As the user
Message appearance	Bot badge "BOT"	N/A

Key Recommendation: Use Bot Token for almost all operations. User OAuth2 is only useful if you need to read user profile information as that specific user. For reading channel messages, managing servers, or sending messages, Bot Token is required.

Guardrails

OAuth2 Scope Limitation: User OAuth2 tokens cannot read channel messages via HTTP API, send messages, or manage servers. These operations require Bot Token authentication.
Discord OpenAPI spec is persisted in the generated link via uxc link --schema-url ...; pass --schema-url <other-url> only when you need to override it temporarily.
Keep automation on JSON output envelope; do not use --text.
Parse stable fields first: ok, kind, protocol, data, error.
Prefer positional JSON for non-string objects instead of --input-json.
discord-openapi-cli <operation> ... is equivalent to uxc https://discord.com/api/v10 --schema-url <discord_openapi_spec> <operation> ....
Treat post:/channels/{channel_id}/messages, delete/update endpoints, and moderation endpoints as write/high-risk operations; require explicit user confirmation before execution.

References

Usage patterns: references/usage-patterns.md
Discord API docs: https://discord.com/developers/docs
Discord API OpenAPI spec: https://github.com/discord/discord-api-spec

discord-openapi-skill