diff --git a/netlify/functions/metrics.ts b/netlify/functions/metrics.ts
index 84737a8..8abf3a6 100644
--- a/netlify/functions/metrics.ts
+++ b/netlify/functions/metrics.ts
@@ -7,7 +7,7 @@ const handler: Handler = async (event: HandlerEvent) => {
   try {
     const eventSignature = event.headers["x-github-event"] || "unknown";
     const body = getEventBody(event);
-    await collectMetricsHandler({ ...body, eventSignature });
+    await collectMetricsHandler({ eventSignature, ...body });
     return {
       statusCode: 200,
       body: "success",
diff --git a/package-lock.json b/package-lock.json
index 94c40d0..b10b46d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "@deven-org/telemetry-functions",
-      "version": "1.2.0",
+      "version": "1.1.0",
       "license": "MIT",
       "dependencies": {
         "@netlify/functions": "^1.4.0",
@@ -22366,6 +22366,7 @@
     "node_modules/netlify-cli/node_modules/unix-dgram": {
       "version": "2.0.6",
       "dev": true,
+      "hasInstallScript": true,
       "license": "ISC",
       "optional": true,
       "dependencies": {
diff --git a/src/__tests__/handler.test.ts b/src/__tests__/handler.test.ts
index 8a0f0ae..c2947b8 100644
--- a/src/__tests__/handler.test.ts
+++ b/src/__tests__/handler.test.ts
@@ -1,32 +1,99 @@
+import * as moduleAddSignature from "../core/addSignature";
+import * as moduleCollectMetrics from "../core/collectMetrics";
+import * as moduleStoreData from "../core/storeData";
 import { handler } from "../handler";
-import mergedCompletedSuccessfully from "./fixtures/merged-completed-successful.json";
+import { logger } from "../core/logger";
+import { DataEventSignature } from "../interfaces";
+import { LogErrors, LogWarnings } from "../shared/logMessages";
 
-describe("Handler", () => {
-  beforeEach(() => {});
+jest.mock("../core/logger", () => ({
+  __esModule: true,
+  logger: {
+    start: jest.fn(),
+    config: jest.fn(),
+    info: jest.fn(),
+    warning: jest.fn(),
+    error: jest.fn(),
+    complete: jest.fn(),
+  },
+}));
 
-  afterEach(() => {});
+const spyOnAddSignature = jest.spyOn(moduleAddSignature, "addSignature");
+const spyOnCollectMetrics = jest.spyOn(moduleCollectMetrics, "collectMetrics");
+const spyOnStoreData = jest.spyOn(moduleCollectMetrics, "collectMetrics");
 
-  it.only("returns the payload enhanced with relative matrix", async () => {
-    const data = {
-      signature: "packages",
+describe("handler", () => {
+  it("calls addSignature passing the given event payload", async () => {
+    const event = {
       foo: "foo",
       bar: "bar",
+      eventSignature: "toolingUsage",
     };
-    const output = await handler(data);
+    await handler(event);
+    expect(spyOnAddSignature).toBeCalledWith({
+      bar: "bar",
+      foo: "foo",
+      eventSignature: "toolingUsage",
+    });
+  });
+  it("calls collectMetrics passing a signed event, given that the event is known", async () => {
+    const event = {
+      foo: "foo",
+      bar: "bar",
+      eventSignature: "toolingUsage",
+    };
+
+    await handler(event);
 
-    expect(output).toMatchObject({
+    expect(spyOnCollectMetrics).toBeCalledWith({
       created_at: expect.any(Number),
-      output: data,
-      dataEventSignature: "packages",
+      dataEventSignature: "deven-tooling-usage",
+      owner: "",
+      repo: "",
+      output: {},
+      payload: {
+        foo: "foo",
+        bar: "bar",
+        eventSignature: "toolingUsage",
+      },
     });
   });
 
-  it("...", async () => {
-    const output = await handler(mergedCompletedSuccessfully);
+  it("doesn't call collectMetrics if the event is unknown", async () => {
+    const event = {
+      foo: "foo",
+      bar: "bar",
+      eventSignature: "foo",
+    };
+
+    await handler(event);
+
+    expect(spyOnCollectMetrics).not.toBeCalled();
+    expect(logger.warning).toBeCalledWith(
+      LogWarnings.signingEventSignatureNotRecognized
+    );
+  });
+
+  it("calls storeData passing an enhanced data event, given that the metrics can be collects", async () => {
+    const event = {
+      foo: "foo",
+      bar: "bar",
+      eventSignature: "toolingUsage",
+    };
+
+    await handler(event);
 
-    expect(output).toMatchObject({
+    expect(spyOnStoreData).toBeCalledWith({
       created_at: expect.any(Number),
-      dataEventSignature: "merged-pr",
+      dataEventSignature: "deven-tooling-usage",
+      output: {},
+      owner: "",
+      payload: {
+        bar: "bar",
+        eventSignature: "toolingUsage",
+        foo: "foo",
+      },
+      repo: "",
     });
   });
 });
diff --git a/src/__tests__/setup.js b/src/__tests__/setup.js
index b0fbbf4..f5255f7 100644
--- a/src/__tests__/setup.js
+++ b/src/__tests__/setup.js
@@ -2,11 +2,11 @@ const dotenv = require("dotenv");
 
 global.console = {
   ...console,
-  //log: jest.fn(),
+  // log: jest.fn(),
   debug: jest.fn(),
   info: jest.fn(),
   warn: jest.fn(),
-  error: jest.fn(),
+  // error: jest.fn(),
 };
 
 dotenv.config({ path: ".test.env" });
diff --git a/src/core/addSignature.ts b/src/core/addSignature.ts
index ae08d14..ce96985 100644
--- a/src/core/addSignature.ts
+++ b/src/core/addSignature.ts
@@ -1,9 +1,7 @@
-import { createDataEvent, Errors, getRejectionReason, logger } from ".";
-import { cond, T, always, pipe, clone } from "ramda";
-import { isWorkflowJobCompleted } from "./signingConditions";
-import { LogInfos } from "../shared/logMessages";
+import { createDataEvent, getRejectionReason, logger } from ".";
+import { cond, pipe, clone, T, always } from "ramda";
+import { LogInfos, LogWarnings } from "../shared/logMessages";
 import { DataEventSignature, DataEvent } from "../interfaces";
-import { isPullRequestClosed } from "../metrics/pull_requests/signatureConditions";
 import signatureConditions from "../signatureConditions";
 
 const createSignedDataEvent =
@@ -14,25 +12,29 @@ const createSignedDataEvent =
       dataEventSignature: signature,
       output: {},
       payload: data,
+      owner: "",
+      repo: "",
     });
   };
 
-const signDataEvent = cond(
-  signatureConditions.map((cond) => [
-    cond[0],
-    createSignedDataEvent(cond[1] as DataEventSignature),
-  ])
-);
+const signDataEvent = cond([
+  ...signatureConditions.map((item) => [
+    item[0],
+    createSignedDataEvent(item[1]),
+  ]),
+  [T, always(false)],
+]);
 
 export const addSignature = (data: any): Promise<DataEvent> => {
   return new Promise((res, rej) => {
     const signedDataEvent = pipe(clone, signDataEvent)(data);
+
     signedDataEvent
       ? res(signedDataEvent)
       : rej(
           getRejectionReason({
-            level: "warn",
-            message: Errors.signingEventSignatureNotRecognized,
+            level: "warning",
+            message: LogWarnings.signingEventSignatureNotRecognized,
           })
         );
   });
diff --git a/src/metrics/collectMetrics.ts b/src/core/collectMetrics.ts
similarity index 76%
rename from src/metrics/collectMetrics.ts
rename to src/core/collectMetrics.ts
index 29f1cf3..4ca9288 100644
--- a/src/metrics/collectMetrics.ts
+++ b/src/core/collectMetrics.ts
@@ -1,13 +1,14 @@
-import { getRejectionReason } from "../core";
-import { logger } from "../core/logger";
-import { cond, clone, pipe, omit } from "ramda";
+import { getRejectionReason } from ".";
+import { logger } from "./logger";
+import { cond, clone, pipe, omit, T, always } from "ramda";
 import metricsConditions from "../metricsConditions";
 
 import { LogErrors, LogInfos } from "../shared/logMessages";
 import { DataEvent, EnhancedDataEvent } from "../interfaces";
 
 const collectMetricsBySignature = cond(
-  metricsConditions.map((cond) => [cond[0], cond[1]])
+  [metricsConditions.map((cond) => [cond[0], cond[1]])],
+  [T, always(false)]
 );
 
 export const collectMetrics = async (
diff --git a/src/core/errorCatcher.ts b/src/core/errorCatcher.ts
index 2a466f5..6890176 100644
--- a/src/core/errorCatcher.ts
+++ b/src/core/errorCatcher.ts
@@ -1,12 +1,7 @@
 import { logger } from "./logger";
 
-export enum Errors {
-  collectMetricsSignatureNotRecognized = "The signature of the data event is not recognized.",
-  signingEventSignatureNotRecognized = "Can't identify the signature of the data event. Skipping.",
-}
-
 export interface ErrorForCatcher {
-  level: "error" | "warn";
+  level: "error" | "warning";
   message: string;
 }
 
diff --git a/src/handler.ts b/src/handler.ts
index cc33017..b292516 100644
--- a/src/handler.ts
+++ b/src/handler.ts
@@ -1,4 +1,4 @@
-import { collectMetrics } from "./metrics/collectMetrics";
+import { collectMetrics } from "./core/collectMetrics";
 import { storeData, errorCatcher } from "./core";
 import { logger } from "./core/logger";
 import { pipeWith, tap } from "ramda";
diff --git a/src/interfaces.ts b/src/interfaces.ts
index ad59eef..722dd2f 100644
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -2,22 +2,32 @@ import {
   PullRequestClosedPayload,
   PullRequestClosedOutput,
 } from "./metrics/pull_requests/interfaces";
+import {
+  ToolingUsageOutput,
+  ToolingUsagePayload,
+} from "./metrics/tooling_usage/interfaces";
 
-import { WorkflowJobCompletedPayload } from "./metrics/workflows/interfaces";
+import {
+  WorkflowJobCompletedOutput,
+  WorkflowJobCompletedPayload,
+} from "./metrics/workflows/interfaces";
 
 export enum DataEventSignature {
   PullRequestClosed = "pull_request-completed",
   WorkflowJobCompleted = "workflow-job-completed",
+  ToolingUsage = "deven-tooling-usage",
 }
 
 interface DataEventPayloadMap {
   [DataEventSignature.PullRequestClosed]: PullRequestClosedPayload;
   [DataEventSignature.WorkflowJobCompleted]: WorkflowJobCompletedPayload;
+  [DataEventSignature.ToolingUsage]: ToolingUsagePayload;
 }
 
 interface DataEventOutputMap {
   [DataEventSignature.PullRequestClosed]: PullRequestClosedOutput;
-  [DataEventSignature.WorkflowJobCompleted]: WorkflowJobCompletedPayload;
+  [DataEventSignature.WorkflowJobCompleted]: WorkflowJobCompletedOutput;
+  [DataEventSignature.ToolingUsage]: ToolingUsageOutput;
 }
 
 export type EnhancedDataEvent = Omit<DataEvent, "payload">;
diff --git a/src/metrics/packages/index.ts b/src/metrics/packages/index.ts
deleted file mode 100644
index 17c316a..0000000
--- a/src/metrics/packages/index.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { DataEvent } from "../../core";
-
-export const collectPackagesMetrics = (
-  dataEvent: DataEvent
-): Promise<DataEvent> => {
-  return new Promise((res) => {
-    res({ ...dataEvent, output: dataEvent.payload });
-  });
-};
diff --git a/src/metrics/pull_requests/signatureConditions.ts b/src/metrics/pull_requests/signatureConditions.ts
index 78f0afe..cc1fb56 100644
--- a/src/metrics/pull_requests/signatureConditions.ts
+++ b/src/metrics/pull_requests/signatureConditions.ts
@@ -1,10 +1,9 @@
 import { allPass, propEq } from "ramda";
 import { DataEventSignature } from "../../interfaces";
 
-export const isPullRequestClosed = () =>
-  allPass([
-    propEq("eventSignature", "pull_request"),
-    propEq("action", "closed"),
-  ]);
+export const isPullRequestClosed = allPass([
+  propEq("eventSignature", "pull_request"),
+  propEq("action", "closed"),
+]);
 
 export default [[isPullRequestClosed, DataEventSignature.PullRequestClosed]];
diff --git a/src/metrics/tooling_usage/__tests__/fixtures/merged-completed-successful.json b/src/metrics/tooling_usage/__tests__/fixtures/merged-completed-successful.json
new file mode 100644
index 0000000..73c8769
--- /dev/null
+++ b/src/metrics/tooling_usage/__tests__/fixtures/merged-completed-successful.json
@@ -0,0 +1,535 @@
+{
+  "action": "closed",
+  "number": 12,
+  "pull_request": {
+    "url": "https://api.github.com/repos/deven-org/telemetry-functions/pulls/12",
+    "id": 1257191273,
+    "node_id": "PR_kwDOI7W9J85K7zdp",
+    "html_url": "https://github.com/deven-org/telemetry-functions/pull/12",
+    "diff_url": "https://github.com/deven-org/telemetry-functions/pull/12.diff",
+    "patch_url": "https://github.com/deven-org/telemetry-functions/pull/12.patch",
+    "issue_url": "https://api.github.com/repos/deven-org/telemetry-functions/issues/12",
+    "number": 12,
+    "state": "closed",
+    "locked": false,
+    "title": "chore(main): release 1.2.1",
+    "user": {
+      "login": "github-actions[bot]",
+      "id": 41898282,
+      "node_id": "MDM6Qm90NDE4OTgyODI=",
+      "avatar_url": "https://avatars.githubusercontent.com/in/15368?v=4",
+      "gravatar_id": "",
+      "url": "https://api.github.com/users/github-actions%5Bbot%5D",
+      "html_url": "https://github.com/apps/github-actions",
+      "followers_url": "https://api.github.com/users/github-actions%5Bbot%5D/followers",
+      "following_url": "https://api.github.com/users/github-actions%5Bbot%5D/following{/other_user}",
+      "gists_url": "https://api.github.com/users/github-actions%5Bbot%5D/gists{/gist_id}",
+      "starred_url": "https://api.github.com/users/github-actions%5Bbot%5D/starred{/owner}{/repo}",
+      "subscriptions_url": "https://api.github.com/users/github-actions%5Bbot%5D/subscriptions",
+      "organizations_url": "https://api.github.com/users/github-actions%5Bbot%5D/orgs",
+      "repos_url": "https://api.github.com/users/github-actions%5Bbot%5D/repos",
+      "events_url": "https://api.github.com/users/github-actions%5Bbot%5D/events{/privacy}",
+      "received_events_url": "https://api.github.com/users/github-actions%5Bbot%5D/received_events",
+      "type": "Bot",
+      "site_admin": false
+    },
+    "body": ":robot: I have created a release *beep* *boop*\n---\n\n\n## [1.2.0](https://github.com/deven-org/telemetry-functions/compare/v1.1.0...v1.2.0) (2023-03-06)\n\n\n### Features\n\n* **functions:** write JSON files instead of base64 ([3471b10](https://github.com/deven-org/telemetry-functions/commit/3471b101c5f5db7af44dcfc516fc298883678012))\n\n\n### Bug Fixes\n\n* show push error ([64ce354](https://github.com/deven-org/telemetry-functions/commit/64ce354dc5588a7e3ca9336d6f0223616c96ed26))\n* show push error ([ea31bd2](https://github.com/deven-org/telemetry-functions/commit/ea31bd20fe32c935a0bcbd1d8f145dfa16ed4c55))\n* show push error ([64f2eb3](https://github.com/deven-org/telemetry-functions/commit/64f2eb39f4a6c81f9d5d86419586c713cbe37321))\n* show push error ([aca964f](https://github.com/deven-org/telemetry-functions/commit/aca964f6ab0a9547b47c174ffe4309fa664bbd6c))\n* show push error ([21fecfb](https://github.com/deven-org/telemetry-functions/commit/21fecfb4f09770e9d978d7f30e343ad093dccc77))\n\n---\nThis PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).",
+    "created_at": "2023-02-28T14:02:15Z",
+    "updated_at": "2023-03-13T15:22:57Z",
+    "closed_at": "2023-03-13T15:22:57Z",
+    "merged_at": "2023-03-13T15:22:57Z",
+    "merge_commit_sha": "9a104bbffd39546de230f96ecba5bbab0204f783",
+    "assignee": null,
+    "assignees": [],
+    "requested_reviewers": [],
+    "requested_teams": [],
+    "labels": [
+      {
+        "id": 5208092354,
+        "node_id": "LA_kwDOI7W9J88AAAABNm0uwg",
+        "url": "https://api.github.com/repos/deven-org/telemetry-functions/labels/autorelease:%20pending",
+        "name": "autorelease: pending",
+        "color": "ededed",
+        "default": false,
+        "description": null
+      }
+    ],
+    "milestone": null,
+    "draft": false,
+    "commits_url": "https://api.github.com/repos/deven-org/telemetry-functions/pulls/12/commits",
+    "review_comments_url": "https://api.github.com/repos/deven-org/telemetry-functions/pulls/12/comments",
+    "review_comment_url": "https://api.github.com/repos/deven-org/telemetry-functions/pulls/comments{/number}",
+    "comments_url": "https://api.github.com/repos/deven-org/telemetry-functions/issues/12/comments",
+    "statuses_url": "https://api.github.com/repos/deven-org/telemetry-functions/statuses/abb8528c80bb8eff88493a61a0e0432a2ba7852c",
+    "head": {
+      "label": "deven-org:release-please--branches--main--components--documentation-skeleton",
+      "ref": "release-please--branches--main--components--documentation-skeleton",
+      "sha": "abb8528c80bb8eff88493a61a0e0432a2ba7852c",
+      "user": {
+        "login": "deven-org",
+        "id": 118735834,
+        "node_id": "O_kgDOBxPD2g",
+        "avatar_url": "https://avatars.githubusercontent.com/u/118735834?v=4",
+        "gravatar_id": "",
+        "url": "https://api.github.com/users/deven-org",
+        "html_url": "https://github.com/deven-org",
+        "followers_url": "https://api.github.com/users/deven-org/followers",
+        "following_url": "https://api.github.com/users/deven-org/following{/other_user}",
+        "gists_url": "https://api.github.com/users/deven-org/gists{/gist_id}",
+        "starred_url": "https://api.github.com/users/deven-org/starred{/owner}{/repo}",
+        "subscriptions_url": "https://api.github.com/users/deven-org/subscriptions",
+        "organizations_url": "https://api.github.com/users/deven-org/orgs",
+        "repos_url": "https://api.github.com/users/deven-org/repos",
+        "events_url": "https://api.github.com/users/deven-org/events{/privacy}",
+        "received_events_url": "https://api.github.com/users/deven-org/received_events",
+        "type": "Organization",
+        "site_admin": false
+      },
+      "repo": {
+        "id": 599112999,
+        "node_id": "R_kgDOI7W9Jw",
+        "name": "telemetry-functions",
+        "full_name": "deven-org/telemetry-functions",
+        "private": false,
+        "owner": {
+          "login": "deven-org",
+          "id": 118735834,
+          "node_id": "O_kgDOBxPD2g",
+          "avatar_url": "https://avatars.githubusercontent.com/u/118735834?v=4",
+          "gravatar_id": "",
+          "url": "https://api.github.com/users/deven-org",
+          "html_url": "https://github.com/deven-org",
+          "followers_url": "https://api.github.com/users/deven-org/followers",
+          "following_url": "https://api.github.com/users/deven-org/following{/other_user}",
+          "gists_url": "https://api.github.com/users/deven-org/gists{/gist_id}",
+          "starred_url": "https://api.github.com/users/deven-org/starred{/owner}{/repo}",
+          "subscriptions_url": "https://api.github.com/users/deven-org/subscriptions",
+          "organizations_url": "https://api.github.com/users/deven-org/orgs",
+          "repos_url": "https://api.github.com/users/deven-org/repos",
+          "events_url": "https://api.github.com/users/deven-org/events{/privacy}",
+          "received_events_url": "https://api.github.com/users/deven-org/received_events",
+          "type": "Organization",
+          "site_admin": false
+        },
+        "html_url": "https://github.com/deven-org/telemetry-functions",
+        "description": null,
+        "fork": false,
+        "url": "https://api.github.com/repos/deven-org/telemetry-functions",
+        "forks_url": "https://api.github.com/repos/deven-org/telemetry-functions/forks",
+        "keys_url": "https://api.github.com/repos/deven-org/telemetry-functions/keys{/key_id}",
+        "collaborators_url": "https://api.github.com/repos/deven-org/telemetry-functions/collaborators{/collaborator}",
+        "teams_url": "https://api.github.com/repos/deven-org/telemetry-functions/teams",
+        "hooks_url": "https://api.github.com/repos/deven-org/telemetry-functions/hooks",
+        "issue_events_url": "https://api.github.com/repos/deven-org/telemetry-functions/issues/events{/number}",
+        "events_url": "https://api.github.com/repos/deven-org/telemetry-functions/events",
+        "assignees_url": "https://api.github.com/repos/deven-org/telemetry-functions/assignees{/user}",
+        "branches_url": "https://api.github.com/repos/deven-org/telemetry-functions/branches{/branch}",
+        "tags_url": "https://api.github.com/repos/deven-org/telemetry-functions/tags",
+        "blobs_url": "https://api.github.com/repos/deven-org/telemetry-functions/git/blobs{/sha}",
+        "git_tags_url": "https://api.github.com/repos/deven-org/telemetry-functions/git/tags{/sha}",
+        "git_refs_url": "https://api.github.com/repos/deven-org/telemetry-functions/git/refs{/sha}",
+        "trees_url": "https://api.github.com/repos/deven-org/telemetry-functions/git/trees{/sha}",
+        "statuses_url": "https://api.github.com/repos/deven-org/telemetry-functions/statuses/{sha}",
+        "languages_url": "https://api.github.com/repos/deven-org/telemetry-functions/languages",
+        "stargazers_url": "https://api.github.com/repos/deven-org/telemetry-functions/stargazers",
+        "contributors_url": "https://api.github.com/repos/deven-org/telemetry-functions/contributors",
+        "subscribers_url": "https://api.github.com/repos/deven-org/telemetry-functions/subscribers",
+        "subscription_url": "https://api.github.com/repos/deven-org/telemetry-functions/subscription",
+        "commits_url": "https://api.github.com/repos/deven-org/telemetry-functions/commits{/sha}",
+        "git_commits_url": "https://api.github.com/repos/deven-org/telemetry-functions/git/commits{/sha}",
+        "comments_url": "https://api.github.com/repos/deven-org/telemetry-functions/comments{/number}",
+        "issue_comment_url": "https://api.github.com/repos/deven-org/telemetry-functions/issues/comments{/number}",
+        "contents_url": "https://api.github.com/repos/deven-org/telemetry-functions/contents/{+path}",
+        "compare_url": "https://api.github.com/repos/deven-org/telemetry-functions/compare/{base}...{head}",
+        "merges_url": "https://api.github.com/repos/deven-org/telemetry-functions/merges",
+        "archive_url": "https://api.github.com/repos/deven-org/telemetry-functions/{archive_format}{/ref}",
+        "downloads_url": "https://api.github.com/repos/deven-org/telemetry-functions/downloads",
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+  "installation": {
+    "id": 34494610,
+    "node_id": "MDIzOkludGVncmF0aW9uSW5zdGFsbGF0aW9uMzQ0OTQ2MTA="
+  }
+}
diff --git a/src/metrics/tooling_usage/__tests__/fixtures/mocked-package.json b/src/metrics/tooling_usage/__tests__/fixtures/mocked-package.json
new file mode 100644
index 0000000..6125b45
--- /dev/null
+++ b/src/metrics/tooling_usage/__tests__/fixtures/mocked-package.json
@@ -0,0 +1,56 @@
+{
+  "name": "@deven-org/telemetry-functions",
+  "version": "1.1.0",
+  "description": "@deven-org/telemetry-functions",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/deven-org/telemetry-functions.git"
+  },
+  "publishConfig": {
+    "@deven-org:registry": "https://npm.pkg.github.com"
+  },
+  "keywords": [
+    "deven",
+    "telemetry",
+    "functions",
+    "serverless"
+  ],
+  "homepage": "https://github.com/deven-org/telemetry-functions",
+  "engines": {
+    "node": ">= 16"
+  },
+  "author": "Deven Team",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/deven-org/telemetry-functions/issues"
+  },
+  "scripts": {
+    "build": "rm -fr dist && microbundle --target node -f umd",
+    "prettier": "prettier --config .prettierrc.js 'src/**/*.ts' --write",
+    "lint": "eslint --fix --max-warnings 0 **/*.ts",
+    "test": "jest",
+    "test:coverage": "jest --coverage",
+    "test:dev": "jest --watch",
+    "doc:install": "deven-documentation-skeleton install",
+    "doc:check": "deven-documentation-skeleton check",
+    "doc:update": "deven-documentation-skeleton update"
+  },
+  "dependencies": {
+    "@netlify/functions": "^1.4.0",
+    "@octokit/rest": "^19.0.7",
+    "dotenv": "^16.0.3",
+    "js-base64": "^3.7.5"
+  },
+  "devDependencies": {
+    "@types/jest": "^29.4.1",
+    "@types/node": "^18.13.0",
+    "deven-documentation-skeleton": "^2.0.0",
+    "moment": "^2.29.4",
+    "netlify": "^13.1.2",
+    "netlify-cli": "^13.0.1",
+    "ramda": "^0.28.0",
+    "semver": "^7.3.8",
+    "signale": "^1.4.0",
+    "ts-jest": "^29.0.5"
+  }
+}
diff --git a/src/metrics/tooling_usage/__tests__/toolingUsage.test.ts b/src/metrics/tooling_usage/__tests__/toolingUsage.test.ts
new file mode 100644
index 0000000..9fb664a
--- /dev/null
+++ b/src/metrics/tooling_usage/__tests__/toolingUsage.test.ts
@@ -0,0 +1,135 @@
+import { DataEventSignature } from "../../../interfaces";
+import { handler } from "../../../handler";
+import mergedCompletedSuccessfully from "./fixtures/merged-completed-successful.json";
+import { encode, decode } from "js-base64";
+import mockedPackageWithDocSkeleton from "./fixtures/mocked-package.json";
+
+let octokitResponse = {};
+
+jest.mock("./../../../core/octokit.ts", () => ({
+  __esModule: true,
+  default: {
+    request: () => octokitResponse,
+  },
+}));
+
+describe("Tooling_Usage", () => {
+  beforeEach(() => {});
+
+  afterEach(() => {});
+
+  it("event gets signed as a toolingUsage event", async () => {
+    const eventBody = {
+      eventSignature: "toolingUsage",
+    };
+
+    octokitResponse = {
+      data: {
+        content: encode(JSON.stringify(mockedPackageWithDocSkeleton)),
+      },
+    };
+
+    const output = await handler(eventBody);
+
+    expect(output).toMatchObject({
+      created_at: expect.any(Number),
+      output: {},
+      dataEventSignature: DataEventSignature.ToolingUsage,
+    });
+  });
+
+  it("returns true if package has deven-documentation-skeleton", async () => {
+    const eventBody = {
+      eventSignature: "toolingUsage",
+    };
+
+    octokitResponse = {
+      data: {
+        content: encode(JSON.stringify(mockedPackageWithDocSkeleton)),
+      },
+    };
+
+    const output = await handler(eventBody);
+
+    expect(output).toMatchObject({
+      created_at: expect.any(Number),
+      output: { hasDocumentationSkeleton: true },
+      dataEventSignature: DataEventSignature.ToolingUsage,
+    });
+  });
+
+  it("returns false if package does not have deven-documentation-skeleton ", async () => {
+    const eventBody = {
+      eventSignature: "toolingUsage",
+    };
+
+    let mockedPackageWithoutDocSkeleton = JSON.parse(
+      JSON.stringify(mockedPackageWithDocSkeleton)
+    );
+
+    delete mockedPackageWithoutDocSkeleton.devDependencies[
+      "deven-documentation-skeleton"
+    ];
+
+    octokitResponse = {
+      data: {
+        content: encode(JSON.stringify(mockedPackageWithoutDocSkeleton)),
+      },
+    };
+
+    const output = await handler(eventBody);
+
+    expect(output).toMatchObject({
+      created_at: expect.any(Number),
+      output: { hasDocumentationSkeleton: false },
+      dataEventSignature: DataEventSignature.ToolingUsage,
+    });
+  });
+
+  it("returns false if there are no devDependencies", async () => {
+    const eventBody = {
+      eventSignature: "toolingUsage",
+    };
+
+    let mockedPackageWithoutDocSkeleton = JSON.parse(
+      JSON.stringify(mockedPackageWithDocSkeleton)
+    );
+
+    delete mockedPackageWithoutDocSkeleton.devDependencies;
+    delete mockedPackageWithoutDocSkeleton.dependencies;
+
+    octokitResponse = {
+      data: {
+        content: encode(JSON.stringify(mockedPackageWithoutDocSkeleton)),
+      },
+    };
+
+    const output = await handler(eventBody);
+
+    expect(output).toMatchObject({
+      created_at: expect.any(Number),
+      output: { hasDocumentationSkeleton: false },
+      dataEventSignature: DataEventSignature.ToolingUsage,
+    });
+  });
+
+  it("return hasValidPackageJson=false if package.json is invalid", async () => {
+    const eventBody = {
+      eventSignature: "toolingUsage",
+    };
+
+    octokitResponse = {
+      data: {
+        content: undefined,
+      },
+    };
+
+    const output = await handler(eventBody);
+
+    expect(output).toMatchObject({
+      created_at: expect.any(Number),
+      output: { hasValidPackageJson: false },
+      dataEventSignature: DataEventSignature.ToolingUsage,
+    });
+  });
+});
diff --git a/src/metrics/tooling_usage/index.ts b/src/metrics/tooling_usage/index.ts
new file mode 100644
index 0000000..a707cee
--- /dev/null
+++ b/src/metrics/tooling_usage/index.ts
@@ -0,0 +1,67 @@
+import { logger } from "../../core";
+import { DataEvent, EnhancedDataEvent } from "../../interfaces";
+import { ToolingUsageOutput, ToolingUsagePayload } from "./interfaces";
+import { keys, pipe, mergeAll, includes } from "ramda";
+import octokit from "../../core/octokit";
+import { encode, decode } from "js-base64";
+import { invalid } from "moment";
+import { LogWarnings } from "../../shared/logMessages";
+
+export const collectToolingUsageMetrics = async (
+  dataEvent: DataEvent
+): Promise<EnhancedDataEvent> => {
+  const payload = dataEvent.payload as ToolingUsagePayload;
+
+  let output: ToolingUsageOutput;
+
+  try {
+    const response = await octokit.request(
+      "GET /repos/{owner}/{repo}/contents/{path}",
+      {
+        owner: payload.owner,
+        repo: payload.repo,
+        path: "package.json",
+      }
+    );
+    const { dependencies, devDependencies } = JSON.parse(
+      decode(response.data["content"])
+    );
+
+    const hasDocumentationSkeleton = pipe(
+      keys,
+      includes("deven-documentation-skeleton")
+    )(mergeAll([devDependencies, dependencies]));
+
+    output = {
+      hasDocumentationSkeleton,
+      dependencies: dependencies,
+      devDependencies: devDependencies,
+      owner: payload.owner,
+      repo: payload.repo,
+      hasValidPackageJson: true,
+    };
+  } catch (error) {
+    output = {
+      hasDocumentationSkeleton: false,
+      dependencies: [],
+      devDependencies: [],
+      owner: payload.owner,
+      repo: payload.repo,
+      hasValidPackageJson: false,
+    };
+    logger.warn(
+      LogWarnings.invalidPackageJson,
+      `${payload.owner}/${payload.repo}`
+    );
+  }
+
+  logger.success(
+    `Collected metrics for "${dataEvent.dataEventSignature}": %s`,
+    keys(output).join(", ")
+  );
+
+  return {
+    ...dataEvent,
+    output,
+  };
+};
diff --git a/src/metrics/tooling_usage/interfaces.d.ts b/src/metrics/tooling_usage/interfaces.d.ts
new file mode 100644
index 0000000..6bbfbe4
--- /dev/null
+++ b/src/metrics/tooling_usage/interfaces.d.ts
@@ -0,0 +1,13 @@
+export type ToolingUsagePayload = {
+  repo: string;
+  owner: string;
+};
+
+export interface ToolingUsageOutput {
+  hasDocumentationSkeleton: boolean;
+  devDependencies: object;
+  dependencies: object;
+  repo: string;
+  owner: string;
+  hasValidPackageJson: boolean;
+}
diff --git a/src/metrics/tooling_usage/metricsConditions.ts b/src/metrics/tooling_usage/metricsConditions.ts
new file mode 100644
index 0000000..435a069
--- /dev/null
+++ b/src/metrics/tooling_usage/metricsConditions.ts
@@ -0,0 +1,7 @@
+import { collectToolingUsageMetrics } from ".";
+import { DataEvent, DataEventSignature } from "../../interfaces";
+
+const isSignedAsToolingUsage = (dataEvent: DataEvent) =>
+  dataEvent.dataEventSignature === DataEventSignature.ToolingUsage;
+
+export default [[isSignedAsToolingUsage, collectToolingUsageMetrics]];
diff --git a/src/metrics/tooling_usage/signatureConditions.ts b/src/metrics/tooling_usage/signatureConditions.ts
new file mode 100644
index 0000000..7444454
--- /dev/null
+++ b/src/metrics/tooling_usage/signatureConditions.ts
@@ -0,0 +1,8 @@
+import { allPass, propEq } from "ramda";
+import { DataEventSignature } from "../../interfaces";
+
+export const isToolingUsed = allPass([
+  propEq("eventSignature", "toolingUsage"),
+]);
+
+export default [[isToolingUsed, DataEventSignature.ToolingUsage]];
diff --git a/src/metricsConditions.ts b/src/metricsConditions.ts
index 95b3e03..1360aa5 100644
--- a/src/metricsConditions.ts
+++ b/src/metricsConditions.ts
@@ -1,5 +1,9 @@
 import { always, T } from "ramda";
 
 import pullRequestsMetricsConditions from "./metrics/pull_requests/metricsConditions";
+import toolingUsageMetricsConditions from "./metrics/tooling_usage/metricsConditions";
 
-export default [...pullRequestsMetricsConditions, [T, always(false)]];
+export default [
+  ...pullRequestsMetricsConditions,
+  ...toolingUsageMetricsConditions,
+];
diff --git a/src/shared/logMessages.ts b/src/shared/logMessages.ts
index 1f0b38a..14325e3 100644
--- a/src/shared/logMessages.ts
+++ b/src/shared/logMessages.ts
@@ -1,6 +1,5 @@
 export enum LogErrors {
   collectMetricsSignatureNotRecognized = "The signature of the data event is not recognized.",
-  signingEventSignatureNotRecognized = "Can't identify the signature of the data event. Skipping.",
 }
 
 export enum LogInfos {
@@ -8,3 +7,8 @@ export enum LogInfos {
   eventSigned = "Event has been signed as: '%s'",
   startCollectingMetrics = "Trying to collect metrics...",
 }
+
+export enum LogWarnings {
+  invalidPackageJson = "Package.json is invalid. Owner/Repo is: '%s'",
+  signingEventSignatureNotRecognized = "Can't identify the signature of the data event. Skipping.",
+}
diff --git a/src/signatureConditions.ts b/src/signatureConditions.ts
index 5f04284..0d2d92e 100644
--- a/src/signatureConditions.ts
+++ b/src/signatureConditions.ts
@@ -1,5 +1,6 @@
 import { always, T } from "ramda";
 
 import pullRequestsConditions from "./metrics/pull_requests/signatureConditions";
+import toolingUsageConditions from "./metrics/tooling_usage/signatureConditions";
 
-export default [...pullRequestsConditions, [T, always(false)]];
+export default [...pullRequestsConditions, ...toolingUsageConditions];