MCP server FirstReply

FirstReply MCP Server

MCP (Model Context Protocol) server that exposes FirstReply customer support operations as tools for AI assistants like Claude. It lets an assistant browse and answer customer conversations, look up contacts, search and maintain the knowledge base, draft and translate replies, draft and schedule social media posts, manage classifications, templates, prompts, webhooks and saved filters, pull support and publishing statistics and manage organization API keys, all scoped and permission-checked by the FirstReply REST API.

The server speaks MCP protocol 2026-07-28 and the earlier 2025-* revisions over stdio and HTTP, built on the v2 MCP TypeScript SDK.

Tools

Tools are named resource_action. Every organization-scoped tool takes an organizationId (see organization_list). Tools that send something to a customer or delete data are annotated as destructive.

Organization, members & API keys

Tool	Description
organization_list	List accessible organizations
organization_get	Get an organization with its settings and AI prompts
organization_update	Update name, language, auto-close and the custom AI prompts
organization_usage	Plan, trial state and channel / member counts against the limits
member_list	List organization members
member_get	Get one member
member_create	Add a member by email with a permission level
member_update	Change a member's permission level
member_delete	Remove a member (destructive)
api_key_list	List the organization's named API keys (metadata only)
api_key_create	Create a named API key; plaintext returned once
api_key_delete	Delete (revoke) an API key (destructive)

Channels

Tool	Description
channel_list	List the channels (email, website chat, WhatsApp, Facebook Page, Instagram, LinkedIn, Threads, X, TikTok, YouTube, Google Business Profile, Bluesky, Mastodon, Telegram, Google Play, App Store) and whether Publishing is on
channel_get	Get one channel
channel_statistics	Statistics per channel
channel_refresh	Fetch new messages from a channel now
channel_test	Test the connection of a channel to its platform
channel_create	Create a channel from settings or credentials: email, website chat, Bluesky, Telegram, App Store, Google Play
channel_connect	Start connecting (or reconnecting) an account that signs in on the platform; returns the login link
channel_update	Rename, pause, turn Publishing and comment handling on or off, change settings or credentials
channel_playstore_service_account	The organization's Google service account to invite in the Play Console
channel_tiktok_creator_info	What a TikTok channel may post right now (privacy levels, interactions, video length)

Facebook Pages, Instagram, LinkedIn, WhatsApp, Threads, X, TikTok, YouTube, Google Business Profile and Mastodon are connected by signing in on the platform. channel_connect returns the login link; the user opens it in a browser where they are signed in to FirstReply (as the organization's owner, which an API key acts as) and finishes there. The link is valid for 10 minutes. There is no tool to delete a channel.

Conversations & messages

Tool	Description
conversation_list	List / filter / search conversations (status, channel, member, contact, classification, language, spam, priority, date ranges, search operators)
conversation_get	Get one conversation
conversation_thread	Get a conversation with all of its messages
conversation_messages	List the messages of a conversation
conversation_reply	Send a reply to the customer, or store an internal note or a draft, with attachments (destructive)
conversation_close	Close a conversation
conversation_read	Mark a conversation as read
conversation_spam	Mark a conversation as spam or not spam
conversation_update	Assign, reprioritize, reclassify, rename, change language, contact or spam flag
conversation_delete	Delete a conversation (destructive)
conversation_stats	Conversation statistics for a date range
conversation_stats_by_member	Statistics per member for a date range
conversation_metrics	Response and resolution metrics for a date range
conversation_totals	Current open / unread totals
message_get	Get one message
message_update	Edit a draft or internal note
message_send	Send a draft (destructive)
message_delete	Delete a message (destructive)
attachment_upload	Upload a file from a public https address; returns the attachment for conversation_reply

The search argument of conversation_list, search and the saved filters understands the FirstReply search syntax: words are AND-ed and prefix matched, "quoted phrases", -word, and the operators from:, subject:, is: (open, closed, unread, read, assigned, unassigned, ai), has: (attachment, draft), before: and after: (YYYY-MM-DD).

attachment_upload takes images (JPEG, PNG, GIF, WebP), PDF, plain text, CSV, Word and Excel files of up to 50 MB. Like post_media_upload it only fetches public https addresses, and the file is streamed to the API, not kept.

Contacts

Tool	Description
contact_list	List / search contacts
contact_get	Get one contact with custom fields
contact_create	Create a contact
contact_update	Update a contact
contact_delete	Delete a contact (destructive)
contact_field_list	List the custom contact fields

Social posts

Tool	Description
post_list	List / filter posts (status, channel, period, text); order: asc for upcoming posts
post_get	Get a post with its channels, publish state and latest metrics
post_statistics	How many posts are drafts, waiting for approval, scheduled, published and failed, and when the next one goes out
post_metrics	Metric snapshots of every channel of a published post
post_comments	The comment threads on a post, as conversations
post_write	Write, shorten or rewrite a post text with AI, for a platform and a character limit; saves nothing
post_media_upload	Upload an image or video from a public https address; returns the media id for a post
post_create	Save a post as a draft, with media and per-channel text and settings
post_schedule	Schedule a new post or an existing draft for a time on the given channels
post_reschedule	Move a post to another time; text, channels and media stay
post_analytics	Totals, daily series, top posts and channels for a period

Posts target channels with Publishing on (publishingEnabled in channel_list), given as channelIds or as targets with a text of their own and the platform's settings (YouTube title and made-for-kids choice, TikTok privacy level, Instagram post type, X thread parts, ...). There is no tool to publish right away, approve, retry or delete a post: a public post cannot be taken back, so the assistant drafts or schedules and a person can still change it. Scheduled times have to be at least 10 minutes ahead. When the organization requires approval, a member's scheduled post waits for a manager (status PENDING_APPROVAL); such a post is not rescheduled with manager rights (an API key acts as the owner), since saving it would approve it. Comments are only read: hiding, deleting or liking a comment and answering it privately act publicly on the platform and stay in FirstReply.

Classifications

Tool	Description
classification_list	List classifications with their automation settings
classification_get	Get one classification
classification_create	Create a classification
classification_update	Update a classification (unchanged settings are kept)
classification_delete	Delete a classification, optionally moving its conversations (destructive)
classification_impact	Preview what deleting a classification affects
classification_statistics	Conversation counts per classification

Knowledge base

Tool	Description
knowledge_search	Search or browse knowledge entries
knowledge_get	Get one knowledge entry
knowledge_create	Add a question / answer entry
knowledge_update	Update a knowledge entry
knowledge_delete	Delete a knowledge entry (destructive)
knowledge_source_list	List synced knowledge sources with their sync state
knowledge_source_get	Get one knowledge source
knowledge_source_create	Add a website or helpdesk (Freshdesk) source
knowledge_source_update	Rename a source, change its settings or its sync
knowledge_source_delete	Delete a knowledge source (destructive)
knowledge_source_sync	Start a sync now
knowledge_source_status	Sync status of a source

Knowledge source configurations hold credentials and are never returned. knowledge_source_update puts the settings it is given on top of the stored ones. GitHub, Notion, GitBook, ClickUp and monday.com sources are connected by signing in and are added in FirstReply; their settings can be changed here.

AI & search

Tool	Description
ai_draft_reply	Generate an AI reply draft for a conversation without sending it
ai_prompt	Run a free-form prompt with the organization's persona and knowledge
ai_translate	Translate a text, e.g. a reply into the customer's language
ai_test	Simulate an incoming message: classification, spam verdict and reply
search	Global search across conversations, contacts, knowledge and messages

Templates, prompts, webhooks & filters

Tool	Description
template_list / template_get / template_create / template_update / template_delete	Reply templates and their language variants
prompt_list / prompt_get / prompt_create / prompt_update / prompt_delete	Saved AI prompts
webhook_list / webhook_get / webhook_create / webhook_update / webhook_delete	Webhooks and their events (including post.create, post.update, post.delete)
webhook_test	Send a test event to a webhook
webhook_rotate_secret	Generate a new signing secret (returned once)
filter_list / filter_get / filter_create / filter_update / filter_delete	Saved conversation filters

Not covered, by design: authentication and profile endpoints, channel creation and OAuth connections, knowledge source creation, billing, attachments and CSV import / export, publishing posts right away, approving posts, media uploads, comment moderation and private replies to comments. Those stay in the FirstReply web app.

Widgets

Hosts that support MCP Apps (Claude, ChatGPT) show some results as a small view next to the answer:

Widget	Tools	What it shows
ConversationList	conversation_list	Contact, subject, last message, status and classification per conversation
ReplyDraft	ai_draft_reply	The draft in a text field, with Send reply, Save as draft and Copy
PostCard	post_get, post_create, post_schedule, post_reschedule	The post, its time and the status per channel
PostAnalytics	post_analytics	Totals, views per day and numbers per channel
ResultCard	conversation_reply, conversation_close, channel_connect, channel_create, channel_update	A confirmation, or the sign-in link of a channel

Send reply in ReplyDraft calls conversation_reply with the text on screen; a host that does not let widgets call tools only offers Copy. Widgets are in English and German, following the host's language. Other hosts ignore them and get the same JSON text as before.

Requirements

• Node.js >= 20
• A FirstReply account, or an organization API key

Authentication

The hosted server accepts two kinds of bearer token:

• Sign-in (OAuth 2.1): hosts such as Claude and ChatGPT only need the address https://mcp.firstreply.ai/. They register themselves, send the user to FirstReply to allow the connection, and act with that user's permissions in all of their organizations.
• Organization API key: as described below; the only option for the local (stdio) server.

With an API key, the server authenticates against the FirstReply REST API with an organization API key (fr_...), created in FirstReply under Organization → Development → API Keys. Organizations support multiple named keys with optional expiry, so it is best to create a dedicated key for this MCP server. The key is sent as Authorization: Bearer.

API key requests run with the permissions of the organization owner: treat the key as a secret and rotate it by creating a new key and deleting the old one.

A key only reaches its own organization: organization_list returns just that organization, and requests for any other organization are refused with 403. To work across several organizations, configure one server per key.

Usage (stdio, e.g. Claude Desktop)

{
  "mcpServers": {
    "firstreply": {
      "command": "npx",
      "args": ["-y", "@firstreply/mcp"],
      "env": {
        "FIRSTREPLY_API_TOKEN": "fr_..."
      }
    }
  }
}

Claude Code

claude mcp add firstreply --env FIRSTREPLY_API_TOKEN=fr_... -- npx -y @firstreply/mcp

Usage (hosted)

The server runs at https://mcp.firstreply.ai/ (streamable HTTP). Send the organization API key as bearer token:

claude mcp add --transport http firstreply https://mcp.firstreply.ai/ \
  --header "Authorization: Bearer fr_..."

Usage (HTTP)

npm run build && npm run start:http   # listens on :8080

Stateless: every request gets its own server instance, 2026-07-28 requests are answered directly and 2025-era clients over a stateless streamable-HTTP transport. Every request must carry Authorization: Bearer with an API key or access token. A /health endpoint is provided for probes.

Without a token the answer is 401 with a WWW-Authenticate header naming /.well-known/oauth-protected-resource, where the sign-in of an MCP host starts; MCP_SERVER_URL is the address the server names itself with there.

A browser that opens the endpoint (GET / with Accept: text/html) gets the landing page from public/.

Environment variables

Variable	Description
FIRSTREPLY_API_TOKEN	Organization API key (stdio mode)
FIRSTREPLY_API_URL	API base URL (default https://api.firstreply.ai)
MCP_SERVER_URL	Public address of the HTTP server, its OAuth resource identifier (default https://mcp.firstreply.ai)
PORT	HTTP port (HTTP mode, default 8080)
MCP_ENDPOINT_PATH	HTTP endpoint path (default /)

Development

npm install
npm run typecheck
npm test          # builds and runs node:test suites
npm run build     # compiles TypeScript to dist/

Project structure

src/
├── index.ts              # stdio entry point
├── http-server.ts        # HTTP entry point (Express + createMcpHandler)
├── server.ts             # MCP server factory (McpServer + registerTool)
├── tools.ts              # loads the tool modules, exposes the registry
├── tools/registry.ts     # add() builder, schema helpers, dispatch
├── tools/<resource>.ts   # one module per resource (conversations, contacts, ...)
├── media.ts              # fetches a public file and streams it to a signed upload URL
└── client.ts             # minimal FirstReply REST client
test/
├── tools.test.ts         # tool definition checks and handler tests against a fake client
└── protocol.test.ts      # stdio and HTTP end to end, both protocol eras, against an API stub

Adding a tool: call add(name, description, zodShape, annotations, handler) in the matching src/tools/<resource>.ts. The zod shape is validated by the SDK and published to clients as JSON Schema; every argument needs a description (the tests check).