feat: Add create org invitation tool

pkg/github/__toolsnaps__/create_org_invitation.snap

@@ -0,0 +1,46 @@
+{
+  "annotations": {
+    "title": "Create Organization Invitation",
+    "readOnlyHint": false
+  },
+  "description": "Invite a user to join an organization by GitHub user ID or email address. Requires organization owner permissions. This endpoint triggers notifications and may be subject to rate limiting.",
+  "inputSchema": {
+    "properties": {
+      "email": {
+        "description": "Email address of the person you are inviting. Required unless invitee_id is provided.",
+        "type": "string"
+      },
+      "invitee_id": {
+        "description": "GitHub user ID for the person you are inviting. Required unless email is provided.",
+        "type": "number"
+      },
+      "org": {
+        "description": "The organization name (not case sensitive)",
+        "type": "string"
+      },
+      "role": {
+        "default": "direct_member",
+        "description": "The role for the new member",
+        "enum": [
+          "admin",
+          "direct_member",
+          "billing_manager",
+          "reinstate"
+        ],
+        "type": "string"
+      },
+      "team_ids": {
+        "description": "Team IDs to invite new members to",
+        "items": {
+          "type": "number"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "org"
+    ],
+    "type": "object"
+  },
+  "name": "create_org_invitation"
+}

pkg/github/orgs.go

@@ -0,0 +1,186 @@
+package github
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strconv"
+
+	"github.com/google/go-github/v74/github"
+	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
+
+	"github.com/github/github-mcp-server/pkg/translations"
+)
+
+// CreateOrgInvitation creates a new invitation for a user to join an organization
+func CreateOrgInvitation(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
+	return mcp.NewTool("create_org_invitation",
+			mcp.WithDescription(t("TOOL_CREATE_ORG_INVITATION_DESCRIPTION", "Invite a user to join an organization by GitHub user ID or email address. Requires organization owner permissions. This endpoint triggers notifications and may be subject to rate limiting.")),
+			mcp.WithToolAnnotation(mcp.ToolAnnotation{
+				Title:        t("TOOL_CREATE_ORG_INVITATION", "Create Organization Invitation"),
+				ReadOnlyHint: ToBoolPtr(false),
+			}),
+			mcp.WithString("org",
+				mcp.Required(),
+				mcp.Description("The organization name (not case sensitive)"),
+			),
+			mcp.WithNumber("invitee_id",
+				mcp.Description("GitHub user ID for the person you are inviting. Required unless email is provided."),
+			),
+			mcp.WithString("email",
+				mcp.Description("Email address of the person you are inviting. Required unless invitee_id is provided."),
+			),
+			mcp.WithString("role",
+				mcp.Description("The role for the new member"),
+				mcp.Enum("admin", "direct_member", "billing_manager", "reinstate"),
+				mcp.DefaultString("direct_member"),
+			),
+			mcp.WithArray("team_ids",
+				mcp.Description("Team IDs to invite new members to"),
+				mcp.Items(map[string]any{
+					"type": "number",
+				}),
+			),
+		),
+		func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
+			org, err := RequiredParam[string](request, "org")
+			if err != nil {
+				return mcp.NewToolResultError(err.Error()), nil
+			}
+
+			inviteeID, err := OptionalParam[float64](request, "invitee_id")
+			if err != nil {
+				return mcp.NewToolResultError(err.Error()), nil
+			}
+
+			email, err := OptionalParam[string](request, "email")
+			if err != nil {
+				return mcp.NewToolResultError(err.Error()), nil
+			}
+
+			// Validate that at least one of invitee_id or email is provided
+			if inviteeID == 0 && email == "" {
+				return mcp.NewToolResultError("either invitee_id or email must be provided"), nil
+			}
+
+			role, err := OptionalParam[string](request, "role")
+			if err != nil {
+				return mcp.NewToolResultError(err.Error()), nil
+			}
+			if role == "" {
+				role = "direct_member"
+			}
+
+			var teamIDs []int64
+			if rawTeamIDs, ok := request.GetArguments()["team_ids"]; ok {
+				switch v := rawTeamIDs.(type) {
+				case nil:
+					// nothing to do
+				case []any:
+					for _, item := range v {
+						id, parseErr := parseTeamID(item)
+						if parseErr != nil {
+							return mcp.NewToolResultError(parseErr.Error()), nil
+						}
+						teamIDs = append(teamIDs, id)
+					}
+				case []float64:
+					for _, item := range v {
+						teamIDs = append(teamIDs, int64(item))
+					}
+				default:
+					return mcp.NewToolResultError("team_ids must be an array of numbers"), nil
+				}
+			}
+
+			client, err := getClient(ctx)
+			if err != nil {
+				return nil, fmt.Errorf("failed to get GitHub client: %w", err)
+			}
+
+			// Create the invitation request
+			invitation := &github.CreateOrgInvitationOptions{
+				Role:   github.Ptr(role),
+				TeamID: teamIDs,
+			}
+
+			if inviteeID != 0 {
+				invitation.InviteeID = github.Ptr(int64(inviteeID))
+			}
+
+			if email != "" {
+				invitation.Email = github.Ptr(email)
+			}
+
+			createdInvitation, resp, err := client.Organizations.CreateOrgInvitation(ctx, org, invitation)
+			if err != nil {
+				return nil, fmt.Errorf("failed to create organization invitation: %w", err)
+			}
+			defer func() { _ = resp.Body.Close() }()
+
+			if resp.StatusCode != http.StatusCreated {
+				body, err := io.ReadAll(resp.Body)
+				if err != nil {
+					return nil, fmt.Errorf("failed to read response body: %w", err)
+				}
+				return mcp.NewToolResultError(fmt.Sprintf("failed to create organization invitation: %s", string(body))), nil
+			}
+
+			// Return a minimal response with relevant information
+			type InvitationResponse struct {
+				ID                 int64  `json:"id"`
+				Login              string `json:"login,omitempty"`
+				Email              string `json:"email,omitempty"`
+				Role               string `json:"role"`
+				InvitationTeamsURL string `json:"invitation_teams_url"`
+				CreatedAt          string `json:"created_at"`
+				InviterLogin       string `json:"inviter_login,omitempty"`
+			}
+
+			response := InvitationResponse{
+				ID:                 createdInvitation.GetID(),
+				Login:              createdInvitation.GetLogin(),
+				Email:              createdInvitation.GetEmail(),
+				Role:               createdInvitation.GetRole(),
+				InvitationTeamsURL: createdInvitation.GetInvitationTeamURL(),
+				CreatedAt:          createdInvitation.GetCreatedAt().Format("2006-01-02T15:04:05Z07:00"),
+			}
+
+			if createdInvitation.Inviter != nil {
+				response.InviterLogin = createdInvitation.Inviter.GetLogin()
+			}
+
+			r, err := json.Marshal(response)
+			if err != nil {
+				return nil, fmt.Errorf("failed to marshal response: %w", err)
+			}
+
+			return mcp.NewToolResultText(string(r)), nil
+		}
+}
+
+func parseTeamID(value any) (int64, error) {
+	switch v := value.(type) {
+	case float64:
+		// JSON numbers decode to float64; ensure they are whole numbers
+		if v != float64(int64(v)) {
+			return 0, fmt.Errorf("team_id must be an integer value")
+		}
+		return int64(v), nil
+	case int:
+		return int64(v), nil
+	case int64:
+		return v, nil
+	case string:
+		id, err := strconv.ParseInt(v, 10, 64)
+		if err != nil {
+			return 0, fmt.Errorf("invalid team_id")
+		}
+		return id, nil
+	default:
+		return 0, fmt.Errorf("invalid team_id")
+	}
+}