# argo-mcp MCP server

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2

## Links
- Registry page: https://www.getdrio.com/mcp/io-github-argo-rpg-platform-argo-mcp
- Repository: https://github.com/Argo-RPG-Platform/MCP
- Website: https://app.argo.games/docs/mcp

## Install
- Command: `npx -y argo-mcp`
- Endpoint: https://mcp.argo.games/mcp
- Auth: Auth required by registry metadata

## Setup notes
- Package: Npm argo-mcp v1.0.3
- Environment variable: OAUTH_TOKEN (required; secret)
- Environment variable: REFRESH_TOKEN (secret)
- Environment variable: ARGO_API_BASE
- The upstream registry signals required auth or secrets.
- Remote endpoint: https://mcp.argo.games/mcp

## Tools
- list_campaigns (List campaigns) - List all Argo campaigns the current grant token has access to, including the access level ("read" or "read+write") for each. Call this first when the user has not provided a campaign ID. Each entry includes both `campaignName` and `id` (shown inline as `[id: …]` and also in structuredContent.idMap). Use the `id` verbatim for any subsequent tool call that takes a `campaignId`. In prose to the user, refer to campaigns by `campaignName`; do not print the raw `id` unless asked. Endpoint: https://mcp.argo.games/mcp
- get_campaign (Get campaign) - Retrieve details of an Argo campaign (name, description, rule system, co-GMs). Endpoint: https://mcp.argo.games/mcp
- create_campaign (Create campaign) - Create a new Argo campaign. The current user becomes GM and the calling token gains read+write access to the new campaign immediately (no re-consent needed). Requires the campaign.create OAuth scope, granted at consent time. Endpoint: https://mcp.argo.games/mcp
- update_campaign (Update campaign) - Update a campaign's display name and/or description. Both fields optional — only supplied fields are changed; pass an empty string to clear the description. GMs and co-GMs can call this; rule-system swaps remain WebApp-only. Endpoint: https://mcp.argo.games/mcp
- list_co_gms (List co-GMs) - List the assistant GMs (co-GMs) of a campaign. Endpoint: https://mcp.argo.games/mcp
- add_co_gm (Add co-GM) - Send a user an assistant GM (co-GM) offer for a campaign. This does NOT add them immediately: the target must accept the offer before they become an assistant GM. Owner-only — the calling user must be the campaign's primary GM. Maximum 5 co-GMs per campaign. Endpoint: https://mcp.argo.games/mcp
- remove_co_gm (Remove co-GM) - Remove a co-GM from a campaign. Owner-only or self-removal. Endpoint: https://mcp.argo.games/mcp
- describe_mnemon_types (Describe mnemon types) - Returns a catalog of all mnemon types, their type-specific fields, and the full valid relationship matrix (sourceType → label → targetType). Call this before create_mnemon or create_mnemon_relationship when you are unsure which type or label to use. NPC subtype is strictly FACTION | INDIVIDUAL. Endpoint: https://mcp.argo.games/mcp
- list_mnemons (List mnemons) - List mnemon (lore/memory) entries for an Argo campaign. Optional filters: `title` (case-insensitive substring on entry title only) and `type` (e.g. NPC, Location, Quest). To find entries by what they CONTAIN, use search_mnemons instead. Returns up to `limit` entries (default 100); when `hasMore` is true, call again with `offset` = the returned `nextOffset` to fetch the next page. Each entry includes both `title` and `entryId` (shown inline as `[id: …]` and in structuredContent.idMap). Use the `entryId` verbatim for any tool that takes one; refer to entries by `title` in prose to the user. Endpoint: https://mcp.argo.games/mcp
- search_mnemons (Search mnemons) - Full-text search across mnemon titles, tags, and body content (case-insensitive substring). Prefer this over list_mnemons when looking for entries by what they contain — e.g. "what do we know about the Red Oracle?". Each hit reports which fields matched (title/tags/content) and up to 3 body snippets; a snippet's blockId is the same block id get_mnemon returns, so you can target the matched block directly in update_mnemons_content. Only content visible to the current user is searched. Returns at most `limit` hits (default 20, max 50) plus `hasMore`. Endpoint: https://mcp.argo.games/mcp
- get_mnemon (Get mnemon) - Get the full details of a specific mnemon entry (title, blocks, type properties). Endpoint: https://mcp.argo.games/mcp
- list_mnemon_relationships (List mnemon relationships) - List the relationships of a mnemon entry, split into outgoing edges, incoming edges, and a flat list of linked entries (entryId/title/type/relationshipTypes). Use this to find members of a faction, allies/enemies of an NPC, etc. Endpoint: https://mcp.argo.games/mcp
- create_npc_mnemons (Create NPC mnemons) - Create NPC mnemons (FACTION or INDIVIDUAL). npcType is REQUIRED on each item. Use memberNpcEntryIds (on FACTIONs) and affiliationEntryIds (on INDIVIDUALs) to wire membership; the server projects into MEMBER relationships. Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_location_mnemons (Create location mnemons) - Create Location mnemons (places — cities, dungeons, taverns). Use create_mnemon_relationship with PARENT_OF to nest larger places under one another after creation. Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_quest_mnemons (Create quest mnemons) - Create Quest mnemons. questStatus is one of active|completed|failed. Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_lore_mnemons (Create lore mnemons) - Create Lore mnemons (world background, factions' beliefs, history). Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_archive_mnemons (Create archive mnemons) - Create Archive mnemons (archived lore that is no longer current). Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_journal_mnemons (Create journal mnemons) - Create Journal mnemons (log of in-world events). Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_session_summary_mnemons (Create session summary mnemons) - Create SessionSummary mnemons (structured summaries of game sessions). Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- create_player_mnemons (Create player mnemons) - Create Player mnemons (party root, character notes, party notes). For playerKind=CHARACTER, supply parentEntryId (the PARTY mnemon), partyId (CampaignParty.id), and characterId (SessionCharacter id) or the entry will be auto-detached. Players with campaign.write may call this for a party they belong to; GMs may call for any party. Endpoint: https://mcp.argo.games/mcp
- create_custom_mnemons (Create custom mnemons) - Create custom-typed mnemons (any free-form entry that doesn't fit the other types). Players may not call this — GM/co-GM only. Endpoint: https://mcp.argo.games/mcp
- update_npc_mnemons (Update NPC mnemons) - Update typed/meta fields of NPC mnemons (visibility, tags, npcType, faction membership, etc.). Does NOT modify content blocks — use update_mnemons_content for that. Set visibility=PUBLIC on multiple NPCs in a single call by listing them in items[]. Endpoint: https://mcp.argo.games/mcp
- update_location_mnemons (Update location mnemons) - Update typed/meta fields of Location mnemons. Endpoint: https://mcp.argo.games/mcp
- update_quest_mnemons (Update quest mnemons) - Update typed/meta fields of Quest mnemons (status transitions, expiry, related entries). Endpoint: https://mcp.argo.games/mcp
- update_lore_mnemons (Update lore mnemons) - Update typed/meta fields of Lore mnemons. Endpoint: https://mcp.argo.games/mcp
- update_archive_mnemons (Update archive mnemons) - Update typed/meta fields of Archive mnemons. Endpoint: https://mcp.argo.games/mcp
- update_journal_mnemons (Update journal mnemons) - Update typed/meta fields of Journal mnemons. Endpoint: https://mcp.argo.games/mcp
- update_session_summary_mnemons (Update session summary mnemons) - Update typed/meta fields of SessionSummary mnemons. Endpoint: https://mcp.argo.games/mcp
- update_player_mnemons (Update player mnemons) - Update typed/meta fields of Player mnemons. Endpoint: https://mcp.argo.games/mcp
- update_custom_mnemons (Update custom mnemons) - Update typed/meta fields of Custom-typed mnemons. Endpoint: https://mcp.argo.games/mcp
- update_mnemons_content (Update mnemon content) - Edit the body content of one or more mnemon entries. Each item carries an entryId and an ordered list of ops (append, insertAfter, replace, remove) applied atomically per entry. Op content is authored as Markdown (headings, lists, quotes, code fences, bold/italic, links) — do NOT send HTML. Mentions: @[label](mnemon:<entryId>). Images: ![caption](asset:<assetId>@<campaignId>) — upload the asset first; inline base64 / data: URLs are not accepted. Node addressing: get body-node ids from get_mnemon, then target them in replace/remove/insertAfter. A single op's Markdown may produce several nodes; new nodes get fresh server-generated ids (replace keeps the original id on the first new node). On a bad op (missing blockId, unknown op, etc.) the whole entry's batch is rejected with the failedOpIndex; no partial mutation per entry. See describe_mnemon_types.blockOps for the full vocabulary. Endpoint: https://mcp.argo.games/mcp
- create_mnemon_relationship (Create mnemon relationship) - Create a relationship between two mnemon entries. The label decides everything: its kind (containment or association) and how it reads (one_way or mutual) belong to the word itself — never send a per-edge override. All 14 labels: MEMBER (NPC ∈ Faction, mutual), ALLY (mutual), ENEMY (one-way), RIVAL (one-way), PARENT_OF (Location hierarchy — sourceEntryId is the outer/larger place, e.g. Region → City → District → Tavern), CONTAINS (Location → NPC present there), LOCATED_IN (NPC → Location; inverse of CONTAINS), HAS_SUBQUEST (Quest → subquest Quest), QUEST_RELATED_NPC (Quest → NPC), QUEST_RELATED_LOCATION (Quest → Location), SESSION_ATTENDEE_CHARACTER (SessionSummary → CHARACTER-kind Player), SESSION_ATTENDEE_NPC (SessionSummary → NPC), SESSION_FEATURED_QUEST (SessionSummary → Quest), SESSION_FEATURED_LOCATION (SessionSummary → Location). sourceEntryId is the 'from' side; targetEntryId is the 'to' side — which end is which matters. Call describe_mnemon_types for the full valid (sourceType, label, targetType) matrix. For faction membership prefer memberNpcEntryIds / affiliationEntryIds on the NPC itself; for quest links prefer subQuestEntryIds / relatedNpcEntryIds / relatedLocationEntryIds on the quest. Session-summary links have no array equivalent — the SESSION_* labels are the only way to set them. Endpoint: https://mcp.argo.games/mcp
- delete_mnemon_relationship (Delete mnemon relationship) - Delete a relationship by id. Endpoint: https://mcp.argo.games/mcp
- delete_mnemon (Delete mnemon) - Permanently delete a mnemon entry and every relationship that touches it. GM-only on the backend. This cannot be undone — confirm with the user before calling. entryId accepts a hex id or an exact title. Endpoint: https://mcp.argo.games/mcp
- create_session (Schedule session) - Schedule a campaign session. Provide an ISO-8601 startAt; endAt is optional. Useful for laying out planned arcs or recurring play nights. Endpoint: https://mcp.argo.games/mcp
- list_sessions (List sessions) - List campaign sessions for a given month (defaults to the current month). Endpoint: https://mcp.argo.games/mcp
- get_session (Get session) - Get details of a single campaign session. Endpoint: https://mcp.argo.games/mcp
- update_session (Update session) - Reschedule a campaign session or edit its title/description. All fields optional. Owner-only on the backend. Endpoint: https://mcp.argo.games/mcp
- list_guilds (List guilds) - List the guilds the current user belongs to, with role (Owner/Admin/Member), member count, and campaign count. Requires the guild.read scope. Each entry includes both `name` and `guildId` (shown inline as `[id: …]` and in structuredContent.idMap). Use the `guildId` verbatim for any tool that takes one; refer to guilds by `name` in prose to the user. Endpoint: https://mcp.argo.games/mcp
- get_guild (Get guild) - Retrieve full details of a guild (members, campaigns, calendar metadata). Endpoint: https://mcp.argo.games/mcp
- list_guild_members (List guild members) - List the members of a guild (id, role, status, invitedAt, joinedAt). Endpoint: https://mcp.argo.games/mcp
- add_campaign_to_guild (Add campaign to guild) - Add a campaign to a guild. Any active member of the guild can do this; the calling user must be the campaign's GM (enforced server-side). Endpoint: https://mcp.argo.games/mcp
- invite_guild_member (Invite guild member) - Invite a user to join the guild. Owner/Admin only. Endpoint: https://mcp.argo.games/mcp
- remove_guild_member (Remove guild member) - Remove a member from the guild. Owner/Admin only. Endpoint: https://mcp.argo.games/mcp
- set_guild_member_role (Set guild member role) - Change a guild member's role to Owner, Admin, or Member. Owner/Admin only. Note that promoting another user to Owner transfers the guild — confirm with the user first. Endpoint: https://mcp.argo.games/mcp
- add_guild_calendar_event (Add guild calendar event) - Add a new event to the guild's shared calendar. Owner/Admin only. startDateTime / endDateTime are ISO-8601 (e.g. 2026-06-12T19:00:00). Endpoint: https://mcp.argo.games/mcp
- list_friends (List friends) - List the current user's accepted friends. Endpoint: https://mcp.argo.games/mcp
- list_sent_friend_requests (List sent friend requests) - List outgoing friend requests that are still pending. Endpoint: https://mcp.argo.games/mcp
- list_received_friend_requests (List received friend requests) - List incoming friend requests awaiting your response. Endpoint: https://mcp.argo.games/mcp
- send_friend_request (Send friend request) - Send a friend request to another Argo user. Endpoint: https://mcp.argo.games/mcp
- accept_friend_request (Accept friend request) - Accept an incoming friend request from the given user. Endpoint: https://mcp.argo.games/mcp
- reject_friend_request (Reject friend request) - Reject an incoming friend request from the given user. Endpoint: https://mcp.argo.games/mcp
- cancel_friend_request (Cancel friend request) - Cancel a friend request you previously sent. Endpoint: https://mcp.argo.games/mcp
- forum_list_categories (List forum categories) - List all Discourse forum categories at community.argo.games. Call this first when the user wants to post a bug report or feature request — you need the categoryId to create a topic. Endpoint: https://mcp.argo.games/mcp
- forum_list_topics (List forum topics) - List topics in a specific forum category. Provide categorySlug and/or categoryId — given only one, the other is resolved from the category list automatically. Use forum_list_categories to discover categories. Endpoint: https://mcp.argo.games/mcp
- forum_get_latest_topics (Get latest forum topics) - Get the latest active topics across all forum categories. Endpoint: https://mcp.argo.games/mcp
- forum_read_topic (Read forum topic) - Read the full content of a forum topic including all posts and replies. Post bodies are returned as plain text (HTML markup is stripped). Endpoint: https://mcp.argo.games/mcp
- forum_search (Search forum) - Search forum topics and posts. Supports Discourse search syntax: #category-slug to filter by category, @username to filter by author. Always search before creating a bug report or feature request to avoid duplicates. Endpoint: https://mcp.argo.games/mcp
- forum_get_user_posts (List my forum topics) - List topics created by the current user on the forum. Endpoint: https://mcp.argo.games/mcp
- forum_get_notifications (Get forum notifications) - Get the current user's forum notifications (replies, mentions, likes). Endpoint: https://mcp.argo.games/mcp
- forum_create_topic (Create forum topic) - Create a new forum topic (bug report, feature request, or general discussion). Always call forum_search first to check for duplicates. Call forum_list_categories to get the correct categoryId. Endpoint: https://mcp.argo.games/mcp
- forum_reply (Reply to forum topic) - Reply to an existing forum topic. Endpoint: https://mcp.argo.games/mcp

## Resources
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## Prompts
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## Metadata
- Owner: io.github.Argo-RPG-Platform
- Version: 1.0.3
- Runtime: Npm
- Transports: STDIO, HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: May 14, 2026
- Source: https://registry.modelcontextprotocol.io