diff --git a/src/http/get-benefits/index.js b/src/http/get-benefits/index.js
index 9755a25..4a2c225 100644
--- a/src/http/get-benefits/index.js
+++ b/src/http/get-benefits/index.js
@@ -5,6 +5,7 @@ const { getDefinitions } = require("@architect/shared/s3");
 
 // Definitions will be loaded from benefits-recs-defs.json in S3.
 // We keep it outside the handler to cache it between Lambda runs.
+/** @type {import('./node_modules/@architect/shared/s3.js').Definitions} */
 let definitions = {};
 
 /** Core function for get-benefits. */
@@ -19,9 +20,7 @@ exports.handler = arc.http.async(async (req) => {
   const language = req.query.language || "en";
 
   const allLinks = assembleLinks(definitions, language, host);
-  console.log("All:" + allLinks.length);
   const links = await applyRules(definitions, allLinks, host);
-  console.log("Filtered:" + links.length);
   const data = {
     header: "Apply for more benefits!",
     tagline: "You might be able to get:",
diff --git a/src/shared/links.js b/src/shared/links.js
index 1408a3c..5c5e403 100644
--- a/src/shared/links.js
+++ b/src/shared/links.js
@@ -47,12 +47,23 @@ const addAnalytics = (linkUrl, analytics, hostDef) => {
   }
 };
 
+/**
+ * @typedef TargetLink
+ * @type {object}
+ * @property {string} id
+ * @property {string} language
+ * @property {string} lead
+ * @property {string} catalyst
+ * @property {string} url
+ * @property {string} graphic
+ */
+
 /**
  * Construct link objects for the given language and host.
- * @param {object} definitions
+ * @param {import('./s3.js').Definitions} definitions
  * @param {string} language
  * @param {string} host
- * @returns
+ * @returns {TargetLink[]}
  */
 exports.assembleLinks = (definitions, language, host) => {
   const { targets, hosts: hostDefs } = definitions;
@@ -76,9 +87,6 @@ exports.assembleLinks = (definitions, language, host) => {
     const catalyst =
       translations[langKey]?.catalyst || translations.en.catalyst || "";
 
-    const description =
-      translations[langKey]?.description || translations.en.description || "";
-
     const linkUrl = translations[langKey]?.url || translations.en.url || "";
 
     const analytics =
@@ -87,11 +95,8 @@ exports.assembleLinks = (definitions, language, host) => {
     const urlWithAnalytics = addAnalytics(linkUrl, analytics, hostDef);
 
     return {
-      linktext: lead, // linktext depreciated
-      program: catalyst, // program depreciated
       lead,
       catalyst,
-      description, // description possibly depreciated
       url: urlWithAnalytics,
       graphic,
       language: langKey,
diff --git a/src/shared/rules.js b/src/shared/rules.js
index 947a524..0a533ed 100644
--- a/src/shared/rules.js
+++ b/src/shared/rules.js
@@ -1,3 +1,6 @@
+const url = require("./url");
+const { getThrottles } = require("./throttles");
+
 /**
  * rules.js
  * Welcome to rules.
@@ -8,10 +11,19 @@
  * Rules are processed in a specific order.
  */
 
-const url = require("./url");
-const { getThrottles } = require("./throttles");
+/**
+ * @callback Rule
+ * @param {import('./links.js').TargetLink[]} links
+ * @param {object} params
+ * @param {string} [params.host]
+ * @param {import('./s3.js').Throttle[]} [params.throttles]
+ * @returns {import('./links.js').TargetLink[]}
+ */
 
-/** Remove links that have exceeded daily throttles. */
+/**
+ * Remove links that have exceeded daily throttles.
+ * @type {Rule}
+ */
 const removeThrottledLinks = (links, { throttles }) =>
   links.filter((link) => {
     const blockingThrottles = throttles.filter(
@@ -22,21 +34,33 @@ const removeThrottledLinks = (links, { throttles }) =>
     return blockingThrottles.length < 1;
   });
 
-/** Remove links that point back to the same host site as the widget. */
+/**
+ * Remove links that point back to the same host site as the widget.
+ * @type {Rule}
+ */
 const removeLinkBacks = (links, { host }) =>
   links.filter((link) => !url.matchHosts(host, link.url));
 
-/** Randomize the order of the links. */
+/**
+ * Randomize the order of the links.
+ * @type {Rule}
+ */
 const randomizeOrder = (links) =>
   links
     .map((link) => ({ link, sort: Math.random() }))
     .sort((a, b) => a.sort - b.sort)
     .map(({ link }) => link);
 
-/** Reduce the list of links to just the top three. */
+/**
+ * Reduce the list of links to just the top three.
+ * @type {Rule}
+ */
 const pickTopThree = (links) => links.slice(0, 3);
 
-/** Active rules, in order. */
+/**
+ * Active rules, in order.
+ * @type {Rule[]}
+ */
 const rules = [
   removeThrottledLinks,
   removeLinkBacks,
@@ -44,7 +68,13 @@ const rules = [
   pickTopThree,
 ];
 
-/** Apply the rules to the list of links. */
+/**
+ * Apply the rules to the list of links.
+ * @param {import('./s3.js').Definitions} definitions
+ * @param {import('./links.js').TargetLink[]} allLinks
+ * @param {string} host
+ * @returns {Promise<import('./links.js').TargetLink[]>}
+ */
 const applyRules = async (definitions, allLinks, host) => {
   const throttles = await getThrottles(definitions);
 
diff --git a/src/shared/s3.js b/src/shared/s3.js
index dc531fa..3ecddeb 100644
--- a/src/shared/s3.js
+++ b/src/shared/s3.js
@@ -2,7 +2,57 @@ const { GetObjectCommand, S3Client } = require("@aws-sdk/client-s3");
 
 const s3 = new S3Client({});
 
-/** Grab the definitions file from S3. */
+/**
+ * @typedef Definitions
+ * @type {object}
+ * @property {string} name
+ * @property {string} description
+ * @property {string} updated
+ * @property {Target[]} targets
+ * @property {Throttle[]} throttles
+ * @property {Host[]} hosts
+ */
+
+/**
+ * @typedef Target
+ * @type {object}
+ * @property {string} id
+ * @property {object.<string, Translation>} translations
+ * @property {string[]} throttle_ids
+ */
+
+/**
+ * @typedef Translation
+ * @type {object}
+ * @property {string} id
+ * @property {string} url
+ * @property {string} icon
+ * @property {string} analytics
+ * @property {string} lead
+ * @property {string} catalyst
+ */
+
+/**
+ * @typedef Throttle
+ * @type {object}
+ * @property {string} id
+ * @property {number} [limit]
+ * @property {string} [start]
+ * @property {string} [end]
+ * @property {string[]} urls
+ * @property {boolean} [exceeded]
+ */
+
+/**
+ * @typedef Host
+ * @type {object}
+ * @property {string} id
+ * @property {string[]} urls
+ */
+
+/** Grab the definitions file from S3.
+ * @returns {Promise<Definitions>}
+ */
 exports.getDefinitions = async () => {
   const command = new GetObjectCommand({
     Bucket: "cdn.innovation.ca.gov",
diff --git a/src/shared/throttles.js b/src/shared/throttles.js
index 4a8a180..2cbd500 100644
--- a/src/shared/throttles.js
+++ b/src/shared/throttles.js
@@ -1,6 +1,10 @@
 const arc = require("@architect/functions");
 
-/** Retrieve throttles. */
+/**
+ * Retrieve throttles.
+ * @param {import('./s3.js').Definitions} definitions
+ * @returns {Promise<import('./s3.js').Throttle[]>}
+ */
 exports.getThrottles = async (definitions) => {
   const { throttles: throttleDefs } = definitions;
 
diff --git a/src/shared/url.js b/src/shared/url.js
index 21ceb2f..d7152ec 100644
--- a/src/shared/url.js
+++ b/src/shared/url.js
@@ -1,11 +1,11 @@
+const { URL } = require("url");
+
 /**
  * url.js
  * A collection of functions for comparing URLs.
  * We'll be doing a lot of that when targetting links to send to the widget.
  */
 
-const { URL } = require("url");
-
 /**
  * Get a URL object from a string, if possible.
  * @param {string} input A string representation of the URL.
@@ -60,6 +60,12 @@ const comparePaths = (pUrl1, pUrl2) => {
   return normalizePath(pUrl1) === normalizePath(pUrl2);
 };
 
+/**
+ * See if two URLs have matching hostnames and pathnames.
+ * @param {URL} pUrl1 A URL object for the first URL.
+ * @param {URL} pUrl2 A URL object for the second URL.
+ * @returns {boolean}
+ */
 const compare = (pUrl1, pUrl2) => {
   return compareHosts(pUrl1, pUrl2) && comparePaths(pUrl1, pUrl2);
 };