diff --git a/__tests__/run/001-single-node.ts b/__tests__/run/001-single-node.ts
index 03dcc48..2398f25 100644
--- a/__tests__/run/001-single-node.ts
+++ b/__tests__/run/001-single-node.ts
@@ -1,4 +1,4 @@
-import {App} from "../../util/app";
+import {App} from "../util/app";
 
 describe('Run', () => {
   let app: App;
@@ -23,16 +23,18 @@ describe('Run', () => {
       method: 'PUT',
       headers: {'Content-Type': 'application/json'},
       body: JSON.stringify({
-        name: "Peon",
         id: "peon-1",
-        age: 263
+        properties: {
+          name: "Peon",
+          age: 263
+        }
       })
     });
     const data = await res.json();
     expect(data).toMatchObject({
+      id: "peon-1",
       properties: {
         name: "Peon",
-        id: "peon-1",
         age: 263
       }
     });
diff --git a/__tests__/run/002-two-nodes.ts b/__tests__/run/002-two-nodes.ts
index 05848d8..832c72c 100644
--- a/__tests__/run/002-two-nodes.ts
+++ b/__tests__/run/002-two-nodes.ts
@@ -1,4 +1,6 @@
-import {App} from '../../util/app';
+import Debug from 'debug';
+import {App} from '../util/app';
+const debug = Debug('test:two');
 
 describe('Run', () => {
   const apps: App[] = [];
@@ -6,10 +8,14 @@ describe('Run', () => {
   beforeAll(async () => {
     apps[0] = new App({
       httpEnable: true,
+      peerId: 'app0',
     });
     apps[1] = new App({
       httpEnable: true,
+      peerId: 'app1',
     });
+    apps[0].config.seedPeers.push(apps[1].myRequestAddr);
+    apps[1].config.seedPeers.push(apps[0].myRequestAddr);
 
     await Promise.all(apps.map((app) => app.start()));
   });
@@ -19,40 +25,38 @@ describe('Run', () => {
   });
 
   it('can create a record on node 0 and read it on node 1', async () => {
+    debug('apps[0].apiUrl', apps[0].apiUrl);
+    debug('apps[1].apiUrl', apps[1].apiUrl);
+
     const res = await fetch(`${apps[0].apiUrl}/users`, {
       method: 'PUT',
       headers: {'Content-Type': 'application/json'},
       body: JSON.stringify({
-        name: "Peon",
         id: "peon-1",
-        age: 263
+        properties: {
+          name: "Peon",
+          age: 263
+        }
       })
     });
     const data = await res.json();
     expect(data).toMatchObject({
+      id: "peon-1",
       properties: {
         name: "Peon",
-        id: "peon-1",
         age: 263
       }
     });
 
     await new Promise((resolve) => setTimeout(resolve, 100));
 
-    const res2 = await fetch(`${apps[0].apiUrl}/users`, {
-      method: 'PUT',
-      headers: {'Content-Type': 'application/json'},
-      body: JSON.stringify({
-        name: "Peon",
-        id: "peon-1",
-        age: 263
-      })
-    });
+    const res2 = await fetch(`${apps[1].apiUrl}/users/peon-1`);
     const data2 = await res2.json();
+    debug('data2', data2);
     expect(data2).toMatchObject({
+      id: "peon-1",
       properties: {
         name: "Peon",
-        id: "peon-1",
         age: 263
       }
     });
diff --git a/util/app.ts b/__tests__/util/app.ts
similarity index 74%
rename from util/app.ts
rename to __tests__/util/app.ts
index 51c583c..2084916 100644
--- a/util/app.ts
+++ b/__tests__/util/app.ts
@@ -1,5 +1,5 @@
-import {RhizomeNode, RhizomeNodeConfig} from "../src/node";
-import {TypedCollection} from "../src/typed-collection";
+import {RhizomeNode, RhizomeNodeConfig} from "../../src/node";
+import {TypedCollection} from "../../src/typed-collection";
 
 type User = {
   id?: string;
@@ -28,7 +28,8 @@ export class App extends RhizomeNode {
     const users = new TypedCollection<User>("users");
     users.rhizomeConnect(this);
 
-    this.apiUrl = `http://${this.config.httpAddr}:${this.config.httpPort}`;
+    const {httpAddr, httpPort} = this.config;
+    this.apiUrl = `http://${httpAddr}:${httpPort}`;
   }
 }
 
diff --git a/package.json b/package.json
index a5b6d8e..278fbd8 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,8 @@
     "level": "^9.0.0",
     "object-hash": "^3.0.0",
     "showdown": "^2.1.0",
-    "zeromq": "^6.1.2"
+    "zeromq": "^6.1.2",
+    "util": "./util/"
   },
   "devDependencies": {
     "@eslint/js": "^9.17.0",
diff --git a/src/collection.ts b/src/collection.ts
index 8cb3ca5..a99e7db 100644
--- a/src/collection.ts
+++ b/src/collection.ts
@@ -66,6 +66,7 @@ export class Collection {
     } else {
       let anyChanged = false;
       Object.entries(properties).forEach(([key, value]) => {
+        if (key === 'id') return;
         let changed = false;
         if (entity.properties && entity.properties[key] !== value) {
           entity.properties[key] = value;
diff --git a/src/http-api.ts b/src/http-api.ts
index 76417df..29bfb98 100644
--- a/src/http-api.ts
+++ b/src/http-api.ts
@@ -1,124 +1,26 @@
 import Debug from "debug";
-import express from "express";
-import {FSWatcher} from "fs";
-import {readdirSync, readFileSync, watch} from "fs";
+import express, {Express, Router} from "express";
 import {Server} from "http";
-import path, {join} from "path";
-import {Converter} from "showdown";
 import {Collection} from "./collection";
 import {RhizomeNode} from "./node";
 import {Delta} from "./types";
+import {htmlDocFromMarkdown, MDFiles} from "./util/md-files";
 const debug = Debug('http-api');
 
-const docConverter = new Converter({
-  completeHTMLDocument: true,
-  // simpleLineBreaks: true,
-  tables: true,
-  tasklists: true
-});
-
-const htmlDocFromMarkdown = (md: string): string => docConverter.makeHtml(md);
-
-type mdFileInfo = {
-  name: string,
-  md: string,
-  html: string
-};
-
-class MDFiles {
-  files = new Map<string, mdFileInfo>();
-  readme?: mdFileInfo;
-  dirWatcher?: FSWatcher;
-  readmeWatcher?: FSWatcher;
-
-  readFile(name: string) {
-    const md = readFileSync(join('./markdown', `${name}.md`)).toString();
-    const html = htmlDocFromMarkdown(md);
-    this.files.set(name, {name, md, html});
-  }
-
-  readReadme() {
-    const md = readFileSync('./README.md').toString();
-    const html = htmlDocFromMarkdown(md);
-    this.readme = {name: 'README', md, html};
-  }
-
-  getReadmeHTML() {
-    return this.readme?.html;
-  }
-
-  getHtml(name: string): string | undefined {
-    return this.files.get(name)?.html;
-  }
-
-  list(): string[] {
-    return Array.from(this.files.keys());
-  }
-
-  readDir() {
-    // Read list of markdown files from directory and
-    // render each markdown file as html
-    readdirSync('./markdown/')
-      .filter((f) => f.endsWith('.md'))
-      .map((name) => path.parse(name).name)
-      .forEach((name) => this.readFile(name));
-  }
-
-  watchDir() {
-    this.dirWatcher = watch('./markdown', null, (eventType, filename) => {
-      if (!filename) return;
-      if (!filename.endsWith(".md")) return;
-
-      const name = path.parse(filename).name;
-
-      switch (eventType) {
-        case 'rename': {
-          debug(`file ${name} renamed`);
-          // Remove it from memory and re-scan everything
-          this.files.delete(name);
-          this.readDir();
-          break;
-        }
-        case 'change': {
-          debug(`file ${name} changed`);
-          // Re-read this file
-          this.readFile(name)
-          break;
-        }
-      }
-    });
-  }
-
-  watchReadme() {
-   this.readmeWatcher = watch('./README.md', null, (eventType, filename) => {
-      if (!filename) return;
-
-      switch (eventType) {
-        case 'change': {
-          debug(`README file changed`);
-          // Re-read this file
-          this.readReadme()
-          break;
-        }
-      }
-    });
-  }
-
-  close() {
-    this.dirWatcher?.close();
-    this.readmeWatcher?.close();
-  }
-}
-
 export class HttpApi {
   rhizomeNode: RhizomeNode;
-  app = express();
+  app: Express;
+  router: Router;
   mdFiles = new MDFiles();
   server?: Server;
 
   constructor(rhizomeNode: RhizomeNode) {
     this.rhizomeNode = rhizomeNode;
+    this.app = express();
+    this.router = Router();
+
     this.app.use(express.json());
+    this.app.use(this.router);
   }
 
   start() {
@@ -129,13 +31,13 @@ export class HttpApi {
     this.mdFiles.watchReadme();
 
     // Serve README
-    this.app.get('/html/README', (_req: express.Request, res: express.Response) => {
+    this.router.get('/html/README', (_req: express.Request, res: express.Response) => {
       const html = this.mdFiles.getReadmeHTML();
       res.setHeader('content-type', 'text/html').send(html);
     });
 
     // Serve markdown files as html
-    this.app.get('/html/:name', (req: express.Request, res: express.Response) => {
+    this.router.get('/html/:name', (req: express.Request, res: express.Response) => {
       let html = this.mdFiles.getHtml(req.params.name);
       if (!html) {
         res.status(404);
@@ -154,24 +56,24 @@ export class HttpApi {
       }
       const html = htmlDocFromMarkdown(md);
 
-      this.app.get('/html', (_req: express.Request, res: express.Response) => {
+      this.router.get('/html', (_req: express.Request, res: express.Response) => {
         res.setHeader('content-type', 'text/html').send(html);
       });
     }
 
     // Serve list of all deltas accepted
     // TODO: This won't scale well
-    this.app.get("/deltas", (_req: express.Request, res: express.Response) => {
+    this.router.get("/deltas", (_req: express.Request, res: express.Response) => {
       res.json(this.rhizomeNode.deltaStream.deltasAccepted);
     });
 
     // Get the number of deltas ingested by this node
-    this.app.get("/deltas/count", (_req: express.Request, res: express.Response) => {
+    this.router.get("/deltas/count", (_req: express.Request, res: express.Response) => {
       res.json(this.rhizomeNode.deltaStream.deltasAccepted.length);
     });
 
     // Get the list of peers seen by this node (including itself)
-    this.app.get("/peers", (_req: express.Request, res: express.Response) => {
+    this.router.get("/peers", (_req: express.Request, res: express.Response) => {
       res.json(this.rhizomeNode.peers.peers.map(({reqAddr, publishAddr, isSelf, isSeedPeer}) => {
         const deltasAcceptedCount = this.rhizomeNode.deltaStream.deltasAccepted
           .filter((delta: Delta) => {
@@ -193,12 +95,16 @@ export class HttpApi {
     });
 
     // Get the number of peers seen by this node (including itself)
-    this.app.get("/peers/count", (_req: express.Request, res: express.Response) => {
+    this.router.get("/peers/count", (_req: express.Request, res: express.Response) => {
       res.json(this.rhizomeNode.peers.peers.length);
     });
 
     const {httpAddr, httpPort} = this.rhizomeNode.config;
-    this.server = this.app.listen(httpPort, httpAddr, () => {
+    this.server = this.app.listen({
+      port: httpPort,
+      host: httpAddr,
+      exclusive: true
+    }, () => {
       debug(`HTTP API bound to ${httpAddr}:${httpPort}`);
     });
   }
@@ -207,27 +113,31 @@ export class HttpApi {
     const {name} = collection;
 
     // Get the ID of all domain entities
-    this.app.get(`/${name}/ids`, (_req: express.Request, res: express.Response) => {
+    this.router.get(`/${name}/ids`, (_req: express.Request, res: express.Response) => {
       res.json({ids: collection.getIds()});
     });
 
     // Get a single domain entity by ID
-    this.app.get(`/${name}/:id`, (req: express.Request, res: express.Response) => {
+    this.router.get(`/${name}/:id`, (req: express.Request, res: express.Response) => {
       const {params: {id}} = req;
       const ent = collection.get(id);
+      if (!ent) {
+        res.status(404).send({error: "Not Found"});
+        return;
+      }
       res.json(ent);
     });
 
     // Add a new domain entity
     // TODO: schema validation
-    this.app.put(`/${name}`, (req: express.Request, res: express.Response) => {
-      const {body: properties} = req;
-      const ent = collection.put(properties.id, properties);
+    this.router.put(`/${name}`, (req: express.Request, res: express.Response) => {
+      const {body: {id, properties}} = req;
+      const ent = collection.put(id, properties);
       res.json(ent);
     });
 
     // Update a domain entity
-    this.app.put(`/${name}/:id`, (req: express.Request, res: express.Response) => {
+    this.router.put(`/${name}/:id`, (req: express.Request, res: express.Response) => {
       const {body: properties, params: {id}} = req;
       if (properties.id && properties.id !== id) {
         res.status(400).json({error: "ID Mismatch", param: id, property: properties.id});
diff --git a/src/peers.ts b/src/peers.ts
index 82f0331..0429431 100644
--- a/src/peers.ts
+++ b/src/peers.ts
@@ -7,7 +7,7 @@ import {PeerRequest, RequestSocket, ResponseSocket} from "./request-reply";
 import {Delta, PeerAddress} from "./types";
 const debug = Debug('peers');
 
-export enum PeerMethods {
+export enum RequestMethods {
   GetPublishAddress,
   AskForDeltas
 }
@@ -28,7 +28,7 @@ class Peer {
     this.isSeedPeer = !!SEED_PEERS.find((seedPeer) => reqAddr.isEqual(seedPeer));
   }
 
-  async request(method: PeerMethods): Promise<Message> {
+  async request(method: RequestMethods): Promise<Message> {
     if (!this.reqSock) {
       this.reqSock = new RequestSocket(this.reqAddr);
     }
@@ -38,7 +38,7 @@ class Peer {
   async subscribeDeltas() {
     if (!this.publishAddr) {
       debug(`requesting publish addr from peer ${this.reqAddr.toAddrString()}`);
-      const res = await this.request(PeerMethods.GetPublishAddress);
+      const res = await this.request(RequestMethods.GetPublishAddress);
       this.publishAddr = PeerAddress.fromString(res.toString());
       debug(`received publish addr ${this.publishAddr.toAddrString()} from peer ${this.reqAddr.toAddrString()}`);
     }
@@ -63,7 +63,7 @@ class Peer {
     // Third pass should find a way to reduce the number of deltas transmitted.
 
     // TODO: requestTimeout
-    const res = await this.request(PeerMethods.AskForDeltas);
+    const res = await this.request(RequestMethods.AskForDeltas);
     const deltas = JSON.parse(res.toString());
     return deltas;
   }
@@ -82,12 +82,12 @@ export class Peers {
     this.rhizomeNode.requestReply.registerRequestHandler(async (req: PeerRequest, res: ResponseSocket) => {
       debug('inspecting peer request');
       switch (req.method) {
-        case PeerMethods.GetPublishAddress: {
+        case RequestMethods.GetPublishAddress: {
           debug('it\'s a request for our publish address');
           await res.send(this.rhizomeNode.myPublishAddr.toAddrString());
           break;
         }
-        case PeerMethods.AskForDeltas: {
+        case RequestMethods.AskForDeltas: {
           debug('it\'s a request for deltas');
           // TODO: stream these rather than
           // trying to write them all in one message
diff --git a/src/request-reply.ts b/src/request-reply.ts
index 029e912..6eb1ff6 100644
--- a/src/request-reply.ts
+++ b/src/request-reply.ts
@@ -1,13 +1,13 @@
 import {Request, Reply, Message} from 'zeromq';
 import {EventEmitter} from 'node:events';
-import {PeerMethods} from './peers';
+import {RequestMethods} from './peers';
 import Debug from 'debug';
 import {RhizomeNode} from './node';
 import {PeerAddress} from './types';
 const debug = Debug('request-reply');
 
 export type PeerRequest = {
-  method: PeerMethods;
+  method: RequestMethods;
 };
 
 export type RequestHandler = (req: PeerRequest, res: ResponseSocket) => void;
@@ -22,7 +22,7 @@ export class RequestSocket {
     debug(`Request socket connecting to ${addrStr}`);
   }
 
-  async request(method: PeerMethods): Promise<Message> {
+  async request(method: RequestMethods): Promise<Message> {
     const req: PeerRequest = {
       method
     };
diff --git a/src/util/md-files.ts b/src/util/md-files.ts
new file mode 100644
index 0000000..b6d2b82
--- /dev/null
+++ b/src/util/md-files.ts
@@ -0,0 +1,105 @@
+import Debug from "debug";
+import {FSWatcher, readdirSync, readFileSync, watch} from "fs";
+import path, {join} from "path";
+import {Converter} from "showdown";
+const debug = Debug('md-files');
+
+const docConverter = new Converter({
+  completeHTMLDocument: true,
+  // simpleLineBreaks: true,
+  tables: true,
+  tasklists: true
+});
+
+export const htmlDocFromMarkdown = (md: string): string => docConverter.makeHtml(md);
+
+type mdFileInfo = {
+  name: string,
+  md: string,
+  html: string
+};
+
+export class MDFiles {
+  files = new Map<string, mdFileInfo>();
+  readme?: mdFileInfo;
+  dirWatcher?: FSWatcher;
+  readmeWatcher?: FSWatcher;
+
+  readFile(name: string) {
+    const md = readFileSync(join('./markdown', `${name}.md`)).toString();
+    const html = htmlDocFromMarkdown(md);
+    this.files.set(name, {name, md, html});
+  }
+
+  readReadme() {
+    const md = readFileSync('./README.md').toString();
+    const html = htmlDocFromMarkdown(md);
+    this.readme = {name: 'README', md, html};
+  }
+
+  getReadmeHTML() {
+    return this.readme?.html;
+  }
+
+  getHtml(name: string): string | undefined {
+    return this.files.get(name)?.html;
+  }
+
+  list(): string[] {
+    return Array.from(this.files.keys());
+  }
+
+  readDir() {
+    // Read list of markdown files from directory and
+    // render each markdown file as html
+    readdirSync('./markdown/')
+      .filter((f) => f.endsWith('.md'))
+      .map((name) => path.parse(name).name)
+      .forEach((name) => this.readFile(name));
+  }
+
+  watchDir() {
+    this.dirWatcher = watch('./markdown', null, (eventType, filename) => {
+      if (!filename) return;
+      if (!filename.endsWith(".md")) return;
+
+      const name = path.parse(filename).name;
+
+      switch (eventType) {
+        case 'rename': {
+          debug(`file ${name} renamed`);
+          // Remove it from memory and re-scan everything
+          this.files.delete(name);
+          this.readDir();
+          break;
+        }
+        case 'change': {
+          debug(`file ${name} changed`);
+          // Re-read this file
+          this.readFile(name)
+          break;
+        }
+      }
+    });
+  }
+
+  watchReadme() {
+    this.readmeWatcher = watch('./README.md', null, (eventType, filename) => {
+      if (!filename) return;
+
+      switch (eventType) {
+        case 'change': {
+          debug(`README file changed`);
+          // Re-read this file
+          this.readReadme()
+          break;
+        }
+      }
+    });
+  }
+
+  close() {
+    this.dirWatcher?.close();
+    this.readmeWatcher?.close();
+  }
+}
diff --git a/tsconfig.json b/tsconfig.json
index a8c6919..4b3def9 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,9 +6,6 @@
     "moduleResolution": "Node",
     "sourceMap": true,
     "baseUrl": ".",
-    "paths": {
-      "@/*": ["src/*"]
-    },
     "outDir": "dist",
     "importsNotUsedAsValues": "remove",
     "strict": true,