diff --git a/src/controllers/api/guildTechController.ts b/src/controllers/api/guildTechController.ts
index 9e4243da..951291c0 100644
--- a/src/controllers/api/guildTechController.ts
+++ b/src/controllers/api/guildTechController.ts
@@ -1,5 +1,92 @@
 import { RequestHandler } from "express";
+import { getGuildForRequestEx } from "@/src/services/guildService";
+import { ExportDojoRecipes } from "warframe-public-export-plus";
+import { getAccountIdForRequest } from "@/src/services/loginService";
+import { addMiscItems, getInventory, updateCurrency } from "@/src/services/inventoryService";
+import { IMiscItem } from "@/src/types/inventoryTypes/inventoryTypes";
+import { IInventoryChanges } from "@/src/types/purchaseTypes";
 
-export const guildTechController: RequestHandler = (_req, res) => {
-    res.status(500).end(); // This is what I got for a fresh clan.
+export const guildTechController: RequestHandler = async (req, res) => {
+    const accountId = await getAccountIdForRequest(req);
+    const inventory = await getInventory(accountId);
+    const guild = await getGuildForRequestEx(req, inventory);
+    const data = JSON.parse(String(req.body)) as TGuildTechRequest;
+    if (data.Action == "Sync") {
+        res.json({
+            TechProjects: guild.toJSON().TechProjects
+        });
+    } else if (data.Action == "Start") {
+        const recipe = ExportDojoRecipes.research[data.RecipeType!];
+        guild.TechProjects ??= [];
+        guild.TechProjects.push({
+            ItemType: data.RecipeType!,
+            ReqCredits: scaleRequiredCount(recipe.price),
+            ReqItems: recipe.ingredients.map(x => ({
+                ItemType: x.ItemType,
+                ItemCount: scaleRequiredCount(x.ItemCount)
+            })),
+            State: 0
+        });
+        await guild.save();
+        res.end();
+    } else if (data.Action == "Contribute") {
+        const contributions = data as IGuildTechContributeFields;
+        const techProject = guild.TechProjects!.find(x => x.ItemType == contributions.RecipeType)!;
+        techProject.ReqCredits -= contributions.RegularCredits;
+        const miscItemChanges = [];
+        for (const miscItem of contributions.MiscItems) {
+            const reqItem = techProject.ReqItems.find(x => x.ItemType == miscItem.ItemType);
+            if (reqItem) {
+                reqItem.ItemCount -= miscItem.ItemCount;
+                miscItemChanges.push({
+                    ItemType: miscItem.ItemType,
+                    ItemCount: miscItem.ItemCount * -1
+                });
+            }
+        }
+        addMiscItems(inventory, miscItemChanges);
+        const inventoryChanges: IInventoryChanges = {
+            ...updateCurrency(inventory, contributions.RegularCredits, false),
+            MiscItems: miscItemChanges
+        };
+
+        if (techProject.ReqCredits == 0 && !techProject.ReqItems.find(x => x.ItemCount > 0)) {
+            // This research is now fully funded.
+            techProject.State = 1;
+            const recipe = ExportDojoRecipes.research[data.RecipeType!];
+            techProject.CompletionDate = new Date(new Date().getTime() + recipe.time * 1000);
+        }
+
+        await guild.save();
+        await inventory.save();
+        res.json({
+            InventoryChanges: inventoryChanges
+        });
+    } else {
+        throw new Error(`unknown guildTech action: ${data.Action}`);
+    }
+};
+
+type TGuildTechRequest = {
+    Action: string;
+} & Partial<IGuildTechStartFields> &
+    Partial<IGuildTechContributeFields>;
+
+interface IGuildTechStartFields {
+    Mode: "Guild";
+    RecipeType: string;
+}
+
+interface IGuildTechContributeFields {
+    ResearchId: "";
+    RecipeType: string;
+    RegularCredits: number;
+    MiscItems: IMiscItem[];
+    VaultCredits: number;
+    VaultMiscItems: IMiscItem[];
+}
+
+const scaleRequiredCount = (count: number): number => {
+    // The recipes in the export are for Moon clans. For now we'll just assume we only have Ghost clans.
+    return Math.max(1, Math.trunc(count / 100));
 };
diff --git a/src/models/guildModel.ts b/src/models/guildModel.ts
index 22269ec8..ab87e719 100644
--- a/src/models/guildModel.ts
+++ b/src/models/guildModel.ts
@@ -1,5 +1,12 @@
-import { IGuildDatabase, IDojoComponentDatabase } from "@/src/types/guildTypes";
+import {
+    IGuildDatabase,
+    IDojoComponentDatabase,
+    ITechProjectDatabase,
+    ITechProjectClient
+} from "@/src/types/guildTypes";
 import { model, Schema } from "mongoose";
+import { typeCountSchema } from "./inventoryModels/inventoryModel";
+import { toMongoDate } from "../helpers/inventoryHelpers";
 
 const dojoComponentSchema = new Schema<IDojoComponentDatabase>({
     pf: { type: String, required: true },
@@ -10,12 +17,35 @@ const dojoComponentSchema = new Schema<IDojoComponentDatabase>({
     CompletionTime: Date
 });
 
+const techProjectSchema = new Schema<ITechProjectDatabase>(
+    {
+        ItemType: String,
+        ReqCredits: Number,
+        ReqItems: [typeCountSchema],
+        State: Number,
+        CompletionDate: Date
+    },
+    { _id: false }
+);
+
+techProjectSchema.set("toJSON", {
+    virtuals: true,
+    transform(_doc, obj) {
+        const db = obj as ITechProjectDatabase;
+        const client = obj as ITechProjectClient;
+        if (db.CompletionDate) {
+            client.CompletionDate = toMongoDate(db.CompletionDate);
+        }
+    }
+});
+
 const guildSchema = new Schema<IGuildDatabase>(
     {
         Name: { type: String, required: true },
         DojoComponents: [dojoComponentSchema],
         DojoCapacity: { type: Number, default: 100 },
-        DojoEnergy: { type: Number, default: 5 }
+        DojoEnergy: { type: Number, default: 5 },
+        TechProjects: { type: [techProjectSchema], default: undefined }
     },
     { id: false }
 );
diff --git a/src/models/inventoryModels/inventoryModel.ts b/src/models/inventoryModels/inventoryModel.ts
index 5e5a1680..868a2491 100644
--- a/src/models/inventoryModels/inventoryModel.ts
+++ b/src/models/inventoryModels/inventoryModel.ts
@@ -61,7 +61,7 @@ import {
 import { toMongoDate, toOid } from "@/src/helpers/inventoryHelpers";
 import { EquipmentSelectionSchema } from "./loadoutModel";
 
-const typeCountSchema = new Schema<ITypeCount>({ ItemType: String, ItemCount: Number }, { _id: false });
+export const typeCountSchema = new Schema<ITypeCount>({ ItemType: String, ItemCount: Number }, { _id: false });
 
 const focusXPSchema = new Schema<IFocusXP>(
     {
diff --git a/src/services/guildService.ts b/src/services/guildService.ts
index 35b697fc..250408b9 100644
--- a/src/services/guildService.ts
+++ b/src/services/guildService.ts
@@ -2,10 +2,15 @@ import { Request } from "express";
 import { getAccountIdForRequest } from "@/src/services/loginService";
 import { getInventory } from "@/src/services/inventoryService";
 import { Guild } from "@/src/models/guildModel";
+import { IInventoryDatabaseDocument } from "../types/inventoryTypes/inventoryTypes";
 
 export const getGuildForRequest = async (req: Request) => {
     const accountId = await getAccountIdForRequest(req);
     const inventory = await getInventory(accountId);
+    return await getGuildForRequestEx(req, inventory);
+};
+
+export const getGuildForRequestEx = async (req: Request, inventory: IInventoryDatabaseDocument) => {
     const guildId = req.query.guildId as string;
     if (!inventory.GuildId || inventory.GuildId.toString() != guildId) {
         throw new Error("Account is not in the guild that it has sent a request for");
diff --git a/src/types/guildTypes.ts b/src/types/guildTypes.ts
index edd7aa0c..1778582f 100644
--- a/src/types/guildTypes.ts
+++ b/src/types/guildTypes.ts
@@ -11,6 +11,7 @@ export interface IGuildDatabase extends IGuild {
     DojoComponents?: IDojoComponentDatabase[];
     DojoCapacity: number;
     DojoEnergy: number;
+    TechProjects?: ITechProjectDatabase[];
 }
 
 export interface IDojoClient {
@@ -45,3 +46,15 @@ export interface IDojoComponentDatabase
     pi?: Types.ObjectId;
     CompletionTime?: Date;
 }
+
+export interface ITechProjectClient {
+    ItemType: string;
+    ReqCredits: number;
+    ReqItems: IMiscItem[];
+    State: number; // 0 = pending, 1 = complete
+    CompletionDate?: IMongoDate;
+}
+
+export interface ITechProjectDatabase extends Omit<ITechProjectClient, "CompletionDate"> {
+    CompletionDate?: Date;
+}