feat: initial release with 48 Mattermost MCP tools

- 27 base tools: channels, messaging, users, reactions, files, DMs
- Team management: invite/remove users, get stats, list members
- Slash commands: execute /remind, /poll, etc.
- Webhook management: incoming and outgoing webhooks
- System tools: server config, logs, bulk status updates
- Channel admin: create, invite, leave, delete channels
- Read-only mode for safe exploration
- Dual token support (bot + PAT) for enhanced security
- Apache 2.0 licensed
This commit is contained in:
2026-04-15 21:14:47 -07:00
commit 35a0b2b715
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package outgoing
import (
"context"
"fmt"
"strings"
"github.com/karti-ai/mattermost-mcp-server/pkg/log"
"github.com/karti-ai/mattermost-mcp-server/pkg/mattermost"
"github.com/karti-ai/mattermost-mcp-server/pkg/params"
"github.com/karti-ai/mattermost-mcp-server/pkg/to"
"github.com/karti-ai/mattermost-mcp-server/pkg/tool"
"github.com/mark3labs/mcp-go/mcp"
"github.com/mark3labs/mcp-go/server"
)
var Tool = tool.New()
const (
CreateOutgoingWebhookToolName = "mattermost_create_outgoing_webhook"
ListOutgoingWebhooksToolName = "mattermost_list_outgoing_webhooks"
DeleteOutgoingWebhookToolName = "mattermost_delete_outgoing_webhook"
)
var (
CreateOutgoingWebhookTool = mcp.NewTool(
CreateOutgoingWebhookToolName,
mcp.WithDescription("Create an outgoing webhook that triggers on specific words"),
mcp.WithString("team_id", mcp.Required(), mcp.Description("Team ID for the webhook")),
mcp.WithString("display_name", mcp.Required(), mcp.Description("Display name for the webhook")),
mcp.WithString("trigger_words", mcp.Required(), mcp.Description("Comma-separated list of words that trigger the webhook")),
mcp.WithString("callback_url", mcp.Required(), mcp.Description("URL to POST to when triggered")),
)
ListOutgoingWebhooksTool = mcp.NewTool(
ListOutgoingWebhooksToolName,
mcp.WithDescription("List outgoing webhooks for a team"),
mcp.WithString("team_id", mcp.Required(), mcp.Description("Team ID to list webhooks for")),
mcp.WithNumber("page", mcp.Description("Page number (default 0)")),
mcp.WithNumber("per_page", mcp.Description("Items per page (default 20, max 100)")),
)
DeleteOutgoingWebhookTool = mcp.NewTool(
DeleteOutgoingWebhookToolName,
mcp.WithDescription("Delete an outgoing webhook"),
mcp.WithString("webhook_id", mcp.Required(), mcp.Description("Webhook ID to delete")),
)
)
func init() {
registerTools()
}
func registerTools() {
tools := []server.ServerTool{
{Tool: CreateOutgoingWebhookTool, Handler: CreateOutgoingWebhookFn},
{Tool: ListOutgoingWebhooksTool, Handler: ListOutgoingWebhooksFn},
{Tool: DeleteOutgoingWebhookTool, Handler: DeleteOutgoingWebhookFn},
}
for _, t := range tools {
if t.Tool.Name == ListOutgoingWebhooksToolName {
Tool.RegisterRead(t)
} else {
Tool.RegisterWrite(t)
}
}
}
func CreateOutgoingWebhookFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
log.Debugf("[Outgoing] Called CreateOutgoingWebhookFn")
args := req.GetArguments()
teamID, err := params.GetString(args, "team_id")
if err != nil {
return to.Error(fmt.Errorf("[team_id] %v", err)), nil
}
displayName, err := params.GetString(args, "display_name")
if err != nil {
return to.Error(fmt.Errorf("[display_name] %v", err)), nil
}
triggerWordsStr, err := params.GetString(args, "trigger_words")
if err != nil {
return to.Error(fmt.Errorf("[trigger_words] %v", err)), nil
}
triggerWords := strings.Split(triggerWordsStr, ",")
for i, word := range triggerWords {
triggerWords[i] = strings.TrimSpace(word)
}
callbackURL, err := params.GetString(args, "callback_url")
if err != nil {
return to.Error(fmt.Errorf("[callback_url] %v", err)), nil
}
client := mattermost.GetGlobalClient()
if client == nil {
return to.Error(fmt.Errorf("[internal] client not initialized")), nil
}
hook, err := client.CreateOutgoingWebhook(ctx, teamID, displayName, triggerWords, callbackURL)
if err != nil {
return to.Error(fmt.Errorf("[webhook] failed to create: %v", err)), nil
}
return to.Result(map[string]interface{}{
"id": hook.Id,
"team_id": hook.TeamId,
"display_name": hook.DisplayName,
"trigger_words": hook.TriggerWords,
"callback_url": callbackURL,
"message": "Outgoing webhook created successfully",
}), nil
}
func ListOutgoingWebhooksFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
log.Debugf("[Outgoing] Called ListOutgoingWebhooksFn")
args := req.GetArguments()
teamID, err := params.GetString(args, "team_id")
if err != nil {
return to.Error(fmt.Errorf("[team_id] %v", err)), nil
}
page := params.GetOptionalInt(args, "page", 0)
perPage := params.GetOptionalInt(args, "per_page", 20)
if perPage > 100 {
perPage = 100
}
client := mattermost.GetGlobalClient()
if client == nil {
return to.Error(fmt.Errorf("[internal] client not initialized")), nil
}
hooks, err := client.ListOutgoingWebhooks(ctx, teamID, int(page), int(perPage))
if err != nil {
return to.Error(fmt.Errorf("[webhook] failed to list: %v", err)), nil
}
results := make([]map[string]interface{}, 0, len(hooks))
for _, hook := range hooks {
results = append(results, map[string]interface{}{
"id": hook.Id,
"team_id": hook.TeamId,
"display_name": hook.DisplayName,
"trigger_words": hook.TriggerWords,
})
}
return to.Result(map[string]interface{}{
"webhooks": results,
"count": len(results),
"page": page,
"per_page": perPage,
}), nil
}
func DeleteOutgoingWebhookFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
log.Debugf("[Outgoing] Called DeleteOutgoingWebhookFn")
args := req.GetArguments()
webhookID, err := params.GetString(args, "webhook_id")
if err != nil {
return to.Error(fmt.Errorf("[webhook_id] %v", err)), nil
}
client := mattermost.GetGlobalClient()
if client == nil {
return to.Error(fmt.Errorf("[internal] client not initialized")), nil
}
err = client.DeleteOutgoingWebhook(ctx, webhookID)
if err != nil {
return to.Error(fmt.Errorf("[webhook] failed to delete: %v", err)), nil
}
return to.Result(map[string]interface{}{
"success": true,
"webhook_id": webhookID,
"message": "Outgoing webhook deleted successfully",
}), nil
}