feat: surface badge-adoption tag for repos embedding their AFC badge (#8)

Detect when a repo embeds its own Agent Friendly Code badge in the README
(`/api/badge/<slug>`) and show a "Badge" tag on the leaderboard and the repo
detail page. Dashboard-only social-proof metadata — not a scored signal, and
never vendored to the sibling scorers.

- lib/badge-adoption.ts: host-agnostic detectBadgeEmbed over README candidates
- lib/db.ts: badge_embedded column + in-place migration for pre-existing DBs
- scripts/score.ts: detect on every score; seed flows through score
- components/BadgeAdoptedTag.tsx + RepoHero/leaderboard render the tag
- tests/badge-adoption.test.ts: 6 cases (match, host-agnostic, wrong-slug, …)
- scripts/seed-list.ts: ~30 new curated seed repos
- re-seeded data/rank.db

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: hsnice16

AGENTS.md

@@ -73,7 +73,7 @@ components/               # Tailwind-styled React components
   RepoHero.tsx, ScoreDeltaPopover.tsx, SignalListCard.tsx, ModelSuggestions.tsx, PerModelScores.tsx,
   AlternativesStrip.tsx, BreadcrumbJsonLd.tsx, HomeJsonLd.tsx, ExternalLink.tsx,
   BadgeEmbed.tsx, ActionEmbed.tsx, PeerlistCard.tsx, CopySnippet.tsx, PackageLookupForm.tsx,
-  BackToTop.tsx, GoogleAnalytics.tsx
+  BadgeAdoptedTag.tsx, BackToTop.tsx, GoogleAnalytics.tsx
 lib/
   constants/
     scoring.ts            # score thresholds, visible limits
@@ -93,6 +93,7 @@ lib/
   types/
     db.ts                 # shared row-shape types for lib/db.ts (RepoRow, LeaderboardRow, …)
   package-lookup.ts                   # shared registry → repo lookup (used by /api/package + /package page)
+  badge-adoption.ts                   # detectBadgeEmbed — reads the cloned README for an embedded AFC badge (dashboard metadata, NOT a scored signal; never vendored to siblings)
   db.ts                   # better-sqlite3 schema + queries
   version.ts              # APP_NAME, APP_VERSION, IS_PRE_RELEASE, APP_URL, APP_DESCRIPTION, REPO_URL, SIBLING_VERSION, ACTION_REPO_URL, ACTION_USES, SKILL_REPO_URL, SKILL_INSTALL_CMD, OG_DEFAULTS, TWITTER_DEFAULTS (spread into per-page openGraph / twitter — Next.js shallow-merges these objects so defaults must be re-spread on every page)
   changelog.ts            # typed ChangelogEntry[]
@@ -105,6 +106,7 @@ tests/
   format.test.ts          # compactStars, relativeTime, hostLabel
   parse-repo-url.test.ts  # GH / GL / BB parsing + edge cases
   scorer.test.ts          # scoreRepo, topImprovements
+  badge-adoption.test.ts  # detectBadgeEmbed — README badge-embed detection
   signals/                # one *.test.ts per signal
 tasks/
   README.md

app/page.tsx

@@ -2,6 +2,7 @@ import { ArrowUpRight } from "@phosphor-icons/react/dist/ssr";
 import type { Metadata } from "next";
 import { headers } from "next/headers";
 import Link from "next/link";
+import { BadgeAdoptedTag } from "@/components/BadgeAdoptedTag";
 import { HomeJsonLd } from "@/components/HomeJsonLd";
 import { HostPill } from "@/components/HostPill";
 import { HostSelect } from "@/components/HostSelect";
@@ -246,6 +247,7 @@ export default async function Page({ searchParams }: { searchParams: Promise<Sea
                         {r.owner}/{r.name}
                       </Link>
                       <HostPill host={r.host} />
+                      {r.badge_embedded ? <BadgeAdoptedTag /> : null}
                     </td>
                     <td className="text-right tabular-nums text-ink-dim">{compactStars(r.stars)}</td>
                     <td className="text-right">

components/BadgeAdoptedTag.tsx

@@ -0,0 +1,13 @@
+import { CheckCircle } from "@phosphor-icons/react/dist/ssr";
+
+export function BadgeAdoptedTag() {
+  return (
+    <span
+      title="This repo embeds its Agent Friendly Code badge in its README"
+      className="ml-2 inline-flex items-center gap-1 rounded border border-ok/40 bg-ok/10 px-2 py-px align-middle text-[10.5px] font-semibold uppercase tracking-wider text-ok"
+    >
+      <CheckCircle size={12} weight="fill" aria-hidden="true" />
+      Badge
+    </span>
+  );
+}

components/RepoHero.tsx

@@ -2,6 +2,7 @@ import type { RepoRow } from "@/lib/types/db";
 import { compactStars, relativeTime } from "@/lib/utils/format";
 import { scoreTier, TIER_TEXT_CLASS } from "@/lib/utils/score";
 
+import { BadgeAdoptedTag } from "./BadgeAdoptedTag";
 import { HostPill } from "./HostPill";
 import { Panel } from "./Panel";
 import { ScoreDeltaPopover } from "./ScoreDeltaPopover";
@@ -20,6 +21,7 @@ export function RepoHero({ repo }: { repo: RepoRow }) {
           <h1 className="m-0 break-words text-[20px] font-semibold tracking-tight sm:text-[22px]">
             {repo.owner}/{repo.name}
             <HostPill host={repo.host} />
+            {repo.badge_embedded ? <BadgeAdoptedTag /> : null}
           </h1>
 
           <a

data/rank.db

@@ -0,0 +1,12 @@
+import { firstExisting, readSafe } from "./scoring/signals/helpers";
+
+const README_CANDIDATES = ["README.md", "README.rst", "README.txt", "README"];
+
+export function detectBadgeEmbed(repoPath: string, slug: string): boolean {
+  const p = firstExisting(repoPath, README_CANDIDATES);
+  if (!p) {
+    return false;
+  }
+
+  return readSafe(p).includes(`/api/badge/${slug}`);
+}

lib/badge-adoption.ts

@@ -39,6 +39,7 @@ db.exec(`
     overall_score          REAL,
     previous_overall_score REAL,
     language               TEXT,
+    badge_embedded         INTEGER,
     UNIQUE(host, owner, name)
   );
   CREATE TABLE IF NOT EXISTS model_score (
@@ -73,22 +74,24 @@ export function saveScoredRepo(args: {
   owner: string;
   overall: number;
   stars?: number | null;
+  badgeEmbedded?: boolean;
   signals: SignalResult[];
   language?: string | null;
   modelScores: ModelScore[];
   defaultBranch?: string | null;
 }): number {
   const tx = db.transaction(() => {
     db.prepare(
-      `INSERT INTO repo (host, owner, name, url, default_branch, stars, last_scored_at, overall_score, language)
-       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+      `INSERT INTO repo (host, owner, name, url, default_branch, stars, last_scored_at, overall_score, language, badge_embedded)
+       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
        ON CONFLICT(url) DO UPDATE SET
          default_branch         = excluded.default_branch,
          stars                  = excluded.stars,
          last_scored_at         = excluded.last_scored_at,
          previous_overall_score = repo.overall_score,
          overall_score          = excluded.overall_score,
-         language               = COALESCE(excluded.language, repo.language)`,
+         language               = COALESCE(excluded.language, repo.language),
+         badge_embedded         = excluded.badge_embedded`,
     ).run(
       args.host,
       args.owner,
@@ -99,6 +102,7 @@ export function saveScoredRepo(args: {
       Math.floor(Date.now() / 1000),
       args.overall,
       args.language ?? null,
+      args.badgeEmbedded ? 1 : 0,
     );
 
     const row = db.prepare("SELECT id FROM repo WHERE url = ?").get(args.url) as { id: number };

lib/db.ts

@@ -7,6 +7,7 @@ export type RepoRow = {
   stars: number | null;
   language: string | null;
   overall_score: number | null;
+  badge_embedded: number | null;
   default_branch: string | null;
   last_scored_at: number | null;
   previous_overall_score: number | null;

lib/types/db.ts

@@ -1,6 +1,7 @@
 import { existsSync, mkdirSync, statSync } from "node:fs";
 import { join } from "node:path";
 
+import { detectBadgeEmbed } from "../lib/badge-adoption";
 import { shallowClone } from "../lib/clients/git";
 import { fetchRepoMeta, parseRepoUrl } from "../lib/clients/github";
 import { saveScoredRepo } from "../lib/db";
@@ -61,12 +62,14 @@ async function scoreCommand(target: string): Promise<void> {
 
   console.log(`[score] scanning ${repoPath}`);
   const result = scoreRepo(repoPath);
+  const badgeEmbedded = detectBadgeEmbed(repoPath, `${host}/${owner}/${name}`);
 
   saveScoredRepo({
     url,
     host,
     name,
     owner,
+    badgeEmbedded,
     stars: stars ?? null,
     overall: result.overall,
     signals: result.signals,

scripts/score.ts

@@ -119,6 +119,26 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/payloadcms/payload",
   },
   { url: "https://github.com/strapi/strapi", note: "Strapi — Node.js headless CMS" },
+  { url: "https://github.com/solidjs/solid", note: "Solid — reactive UI library" },
+  { url: "https://github.com/preactjs/preact", note: "Preact — 3kB React alternative" },
+  { url: "https://github.com/mui/material-ui", note: "MUI — React component library" },
+  {
+    url: "https://github.com/chakra-ui/chakra-ui",
+    note: "Chakra UI — accessible React component library",
+  },
+  { url: "https://github.com/nrwl/nx", note: "Nx — smart monorepo build system" },
+  {
+    url: "https://github.com/directus/directus",
+    note: "Directus — headless CMS + data platform",
+  },
+  {
+    url: "https://github.com/medusajs/medusa",
+    note: "Medusa — open-source commerce platform",
+  },
+  {
+    url: "https://github.com/novuhq/novu",
+    note: "Novu — open-source notification infrastructure",
+  },
 
   // --- GitHub, Python ---
   {
@@ -177,6 +197,15 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/sqlfluff/sqlfluff",
     note: "SQLFluff — multi-dialect SQL linter / formatter",
   },
+  { url: "https://github.com/encode/httpx", note: "HTTPX — next-gen Python HTTP client" },
+  { url: "https://github.com/encode/starlette", note: "Starlette — lightweight ASGI framework" },
+  { url: "https://github.com/celery/celery", note: "Celery — distributed task queue" },
+  { url: "https://github.com/scrapy/scrapy", note: "Scrapy — web crawling framework" },
+  {
+    url: "https://github.com/python-poetry/poetry",
+    note: "Poetry — Python packaging & dependency manager",
+  },
+  { url: "https://github.com/mkdocs/mkdocs", note: "MkDocs — Markdown project documentation" },
 
   // --- GitHub, Rust ---
   {
@@ -226,6 +255,19 @@ export const SEEDS: Seed[] = [
     note: "reqwest — ergonomic Rust HTTP client",
     url: "https://github.com/seanmonstar/reqwest",
   },
+  { url: "https://github.com/clap-rs/clap", note: "clap — Rust command-line argument parser" },
+  {
+    url: "https://github.com/alacritty/alacritty",
+    note: "Alacritty — GPU-accelerated terminal emulator",
+  },
+  {
+    url: "https://github.com/surrealdb/surrealdb",
+    note: "SurrealDB — multi-model database (Rust)",
+  },
+  {
+    url: "https://github.com/rustdesk/rustdesk",
+    note: "RustDesk — open-source remote desktop",
+  },
 
   // --- GitHub, Go ---
   {
@@ -269,6 +311,16 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/charmbracelet/bubbletea",
     note: "Bubble Tea — Go TUI framework based on The Elm Architecture",
   },
+  {
+    url: "https://github.com/caddyserver/caddy",
+    note: "Caddy — web server with automatic HTTPS",
+  },
+  {
+    url: "https://github.com/traefik/traefik",
+    note: "Traefik — cloud-native reverse proxy / load balancer",
+  },
+  { url: "https://github.com/minio/minio", note: "MinIO — high-performance object storage" },
+  { url: "https://github.com/go-gorm/gorm", note: "GORM — Go ORM library" },
 
   // --- GitHub, C / C++ / systems ---
   {
@@ -295,6 +347,9 @@ export const SEEDS: Seed[] = [
   { url: "https://github.com/postgres/postgres", note: "PostgreSQL — relational database (mirror)" },
   { url: "https://github.com/duckdb/duckdb", note: "DuckDB — in-process analytical database" },
   { url: "https://github.com/ml-explore/mlx", note: "MLX — Apple's array framework for ML on Apple silicon" },
+  { url: "https://github.com/fmtlib/fmt", note: "fmt — modern C++ formatting library" },
+  { url: "https://github.com/nlohmann/json", note: "JSON for Modern C++" },
+  { url: "https://github.com/opencv/opencv", note: "OpenCV — computer vision library" },
 
   // --- GitHub, JVM (Java / Kotlin) ---
   {
@@ -317,13 +372,19 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/Anuken/Mindustry",
     note: "Mindustry — open-source factory / tower-defense game (Java + libGDX)",
   },
+  { url: "https://github.com/square/okhttp", note: "OkHttp — HTTP client for JVM / Android" },
+  {
+    url: "https://github.com/netty/netty",
+    note: "Netty — async event-driven network framework",
+  },
 
   // --- GitHub, Swift ---
   { url: "https://github.com/apple/swift", note: "Swift language" },
   {
     note: "Vapor — Swift web framework",
     url: "https://github.com/vapor/vapor",
   },
+  { url: "https://github.com/Alamofire/Alamofire", note: "Alamofire — Swift HTTP networking" },
 
   // --- GitHub, Ruby ---
   {
@@ -368,6 +429,10 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/jellyfin/jellyfin",
     note: "Jellyfin — open-source media server (.NET)",
   },
+  {
+    url: "https://github.com/PowerShell/PowerShell",
+    note: "PowerShell — cross-platform shell + scripting (.NET)",
+  },
 
   // --- GitHub, PHP ---
   { url: "https://github.com/laravel/laravel", note: "Laravel — PHP web framework starter" },
@@ -467,6 +532,18 @@ export const SEEDS: Seed[] = [
     url: "https://github.com/earendil-works/pi",
     note: "Pi — self-extensible coding agent CLI + unified multi-provider LLM API (TypeScript)",
   },
+  {
+    url: "https://github.com/block/goose",
+    note: "Goose — open-source on-machine AI coding agent",
+  },
+  {
+    url: "https://github.com/cline/cline",
+    note: "Cline — autonomous coding agent for VS Code",
+  },
+  {
+    url: "https://github.com/continuedev/continue",
+    note: "Continue — open-source AI code assistant for IDEs",
+  },
 
   // --- AI-native: models + infra ---
   {