diff --git a/src/bundle.ts b/src/bundle.ts
index 7d59698..1a3e1df 100644
--- a/src/bundle.ts
+++ b/src/bundle.ts
@@ -20,7 +20,11 @@ export async function publishProject(
   sandboxFactory = getDefaultSandbox,
 ): Promise<string> {
   projectPath = await Deno.realPath(projectPath);
-  const projectJson = await getProjectJson(projectPath, sandboxFactory);
+  const projectJson = await getProjectJson(
+    projectPath,
+    "local",
+    sandboxFactory,
+  );
   let code = await generateBundle(projectPath);
   const vectorDbPath = projectJson.vectorStorage?.path;
   if (vectorDbPath) {
diff --git a/src/project/project.ts b/src/project/project.ts
index 6ab37fd..99672f1 100644
--- a/src/project/project.ts
+++ b/src/project/project.ts
@@ -32,6 +32,11 @@ export const VectorConfig = Type.Object({
 });
 
 export const Project = Type.Object({
+  // Note: If a new spec version is introduced Type.TemplateLiteral could be used here
+  specVersion: Type.Literal(
+    "0.0.1",
+    { description: "The specification version of the project structure." },
+  ),
   model: Type.String({
     description: "The llm model to use",
   }),
@@ -71,8 +76,9 @@ export type IProjectEntrypoint<T extends TObject = TObject> = Static<
   IProjectEntry<T>
 >;
 
-export function validateProject(project: unknown): void {
-  return Value.Assert(Project, project);
+export function validateProject(project: unknown): project is IProject {
+  Value.Assert(Project, project);
+  return true;
 }
 
 function validateProjectEntry(entry: unknown): entry is IProjectEntry {
@@ -109,10 +115,9 @@ export async function getProjectFromEntrypoint(
     // Check that the constructed project is valid
     const project = await entrypoint.projectFactory(config);
 
-    validateProject(project);
-
-    return project;
-  } else {
-    throw new Error("Unable to validate project");
+    if (validateProject(project)) {
+      return project;
+    }
   }
+  throw new Error("Unable to validate project");
 }
diff --git a/src/sandbox/webWorker/webWorker.ts b/src/sandbox/webWorker/webWorker.ts
index 426a070..88f544d 100644
--- a/src/sandbox/webWorker/webWorker.ts
+++ b/src/sandbox/webWorker/webWorker.ts
@@ -19,6 +19,7 @@ import {
   type IProjectEntrypoint,
 } from "../../project/project.ts";
 import type { IContext } from "../../context/context.ts";
+import { PrettyTypeboxError } from "../../util.ts";
 
 const conn = rpc.createMessageConnection(
   new BrowserMessageReader(self),
@@ -52,9 +53,16 @@ conn.onRequest(Init, async (config) => {
     throw new Error("Please call `load` first");
   }
 
-  project ??= await getProjectFromEntrypoint(entrypoint, config);
+  try {
+    project ??= await getProjectFromEntrypoint(entrypoint, config);
 
-  return toJsonProject();
+    return toJsonProject();
+  } catch (e: unknown) {
+    if (e instanceof Error) {
+      throw PrettyTypeboxError(e, "Project validation failed");
+    }
+    throw e;
+  }
 });
 
 conn.onRequest(GetConfig, () => {
diff --git a/src/util.ts b/src/util.ts
index cfffe64..befcad7 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -1,5 +1,5 @@
 import type { Static, TSchema } from "@sinclair/typebox";
-import { Value } from "@sinclair/typebox/value";
+import { AssertError, Value } from "@sinclair/typebox/value";
 import ora, { type Ora } from "ora";
 import { brightBlue } from "@std/fmt/colors";
 
@@ -35,3 +35,22 @@ export function getPrompt(): string | null {
 
 // Possible sources where projects can be loaded from
 export type ProjectSource = "local" | "ipfs";
+
+export function PrettyTypeboxError(
+  error: Error,
+  prefix = "Type Assertion Failed",
+): Error {
+  if (
+    error instanceof AssertError || error.constructor.name === "AssertError"
+  ) {
+    const errs = [...(error as AssertError).Errors()];
+
+    let msg = `${prefix}:\n`;
+    for (const e of errs) {
+      msg += `\t${e.path}: ${e.message}\n`;
+    }
+    return new Error(msg, { cause: error });
+  }
+
+  return error;
+}
diff --git a/subquery-delegator/index.ts b/subquery-delegator/index.ts
index 5458108..63633c7 100644
--- a/subquery-delegator/index.ts
+++ b/subquery-delegator/index.ts
@@ -56,6 +56,7 @@ export const entrypoint: IProjectEntrypoint<typeof ConfigType> = {
 
     return {
       tools,
+      specVersion: "0.0.1",
       model: "llama3.1",
       vectorStorage: {
         type: "lancedb",