diff --git a/src/adapters/sqlite/helpers/pull-request-adapter.ts b/src/adapters/sqlite/helpers/pull-request-adapter.ts
index 367c6780..6383e07a 100644
--- a/src/adapters/sqlite/helpers/pull-request-adapter.ts
+++ b/src/adapters/sqlite/helpers/pull-request-adapter.ts
@@ -1,9 +1,22 @@
 import { DataSource } from "typeorm";
 import { Context } from "../../../types";
+import { PullRequest } from "../entities/pull-request";
 import { Super } from "./sqlite";
 
 export class PullRequestAdapter extends Super {
   constructor(sqlite: DataSource, context: Context) {
     super(sqlite, context);
   }
+
+  public async create(url: string) {
+    const pullRequest = new PullRequest();
+
+    pullRequest.url = url;
+    try {
+      return await pullRequest.save();
+    } catch (e) {
+      this.context.logger.error(`Failed to save the url ${url} to the DB.`);
+      return null;
+    }
+  }
 }
diff --git a/src/handlers/pull-request-opened.ts b/src/handlers/pull-request-opened.ts
new file mode 100644
index 00000000..cf413e71
--- /dev/null
+++ b/src/handlers/pull-request-opened.ts
@@ -0,0 +1,15 @@
+import { Result } from "../proxy";
+import { Context } from "../types";
+
+/**
+ * On pull request opening, we want to add the entry to start watching it.
+ */
+export async function handlePullRequestOpened(context: Context): Promise<Result> {
+  const {
+    adapters: {
+      sqlite: { pullRequest },
+    },
+  } = context;
+  await pullRequest.create(context.payload.pull_request.html_url);
+  return { status: "ok" };
+}
diff --git a/src/plugin.ts b/src/plugin.ts
index ac8cd5a3..68f0e435 100644
--- a/src/plugin.ts
+++ b/src/plugin.ts
@@ -2,6 +2,7 @@ import { Octokit } from "@octokit/rest";
 import { Logs } from "@ubiquity-dao/ubiquibot-logger";
 import { createAdapters } from "./adapters";
 import { initializeDataSource } from "./adapters/sqlite/data-source";
+import { proxyCallbacks } from "./proxy";
 import { Context, Env, PluginInputs } from "./types";
 import "reflect-metadata";
 
@@ -23,10 +24,5 @@ export async function plugin(inputs: PluginInputs, env: Env) {
   };
 
   context.adapters = createAdapters(dataSource, context);
-
-  if (context.eventName === "pull_request.opened") {
-    // do something
-  } else {
-    context.logger.error(`Unsupported event: ${context.eventName}`);
-  }
+  return proxyCallbacks[inputs.eventName](context, env);
 }
diff --git a/src/proxy/index.ts b/src/proxy/index.ts
new file mode 100644
index 00000000..2e9244c3
--- /dev/null
+++ b/src/proxy/index.ts
@@ -0,0 +1,23 @@
+import { handlePullRequestOpened } from "../handlers/pull-request-opened";
+import { Context, Env, SupportedEventsU } from "../types";
+
+export interface Result {
+  status: "ok" | "failed" | "skipped";
+  content?: string;
+  reason?: string;
+}
+
+const callbacks: { [k in SupportedEventsU]: (context: Context, env: Env) => Result | Promise<Result> } = {
+  "pull_request.opened": handlePullRequestOpened,
+  "pull_request.reopened": handlePullRequestOpened,
+};
+
+export const proxyCallbacks = new Proxy(callbacks, {
+  get(target, prop: SupportedEventsU) {
+    if (!(prop in target)) {
+      console.warn(`${prop} is not supported, skipping.`);
+      return async () => ({ status: "skipped", reason: "unsupported_event" });
+    }
+    return target[prop].bind(target);
+  },
+});
diff --git a/src/types/context.ts b/src/types/context.ts
index a9163fc8..bfe7f489 100644
--- a/src/types/context.ts
+++ b/src/types/context.ts
@@ -5,7 +5,7 @@ import { createAdapters } from "../adapters";
 import { Env } from "./env";
 import { PluginSettings } from "./plugin-inputs";
 
-export type SupportedEventsU = "pull_request.opened" | "pull_request.reopened" | "pull_request.closed";
+export type SupportedEventsU = "pull_request.opened" | "pull_request.reopened";
 
 export type SupportedEvents = {
   [K in SupportedEventsU]: K extends WebhookEventName ? WebhookEvent<K> : never;