Show HN: Free API for social post metrics – URL in, views/likes/comments out
摘要
Pulse 提供标准化的 JSON 接口，用户只需提交帖子或个人主页 URL 即可获取观看、点赞、评论、转发及粉丝数等数据。该工具支持 YouTube、X、TikTok、LinkedIn 等主流平台，具备批量请求、历史快照和跨域支持（CORS）。其设计特别针对 AI Agent 优化，提供 OpenAPI 规范并支持 x402 自动支付协议。个人项目可免费使用，商业授权及高并发需求为 19 美元/月。
荐读理由
在开发 AI Agent 时，可直接调用该免注册 API 快速集成多平台（X、TikTok 等）社交数据抓取，免去自建爬虫与维护多套接口的成本；其支持 x402 协议的机器支付设计，为实现智能体自主支付提供了可落地的工程参考。
原文
Pulse Free Read the docs →
An API for agents
Give your agent the numbers behind any post.
Hand Pulse a public post URL — YouTube, X, TikTok, Bluesky, Mastodon, Instagram, Threads — and get back its views, likes, comments, shares, author, and publish date as JSON. Profiles too: a profile URL returns followers. One GET. No signup, no API key. Free.
Read the docs → How I built this
Free · no account · no key · 6 platforms live · Pro $19/mo for commercial use
One call
A URL in, normalized metrics out.
The same request shape for every platform. Here's a real response.
# one call, any public post — no key, no signup
curl "https://pulse.walls.sh/metrics?url=https://www.tiktok.com/@khaby.lame/video/6967348974688816390"
{
"platform": "tiktok",
"views": 39600000,
"likes": 5500000,
"comments": 39500,
"shares": 22300,
"publishedAt": "2021-05-28T14:32:30.000Z",
"title": "Boss.. one shot - 3 points"
}
Endpoints
Four ways to ask.
📈
/metrics
One post URL → views, likes, comments, author, thumbnail, publish date. Short links (vm.tiktok.com, t.co) resolve automatically.
🧺
/metrics/batch
Up to 50 posts in one request — order preserved, one bad URL never fails the batch.
📉
/history
The growth curve: every fresh fetch records a snapshot, so repeat lookups build the post's series over time.
👤
/profile
A profile URL → followers, following, post count, verified. YouTube, TikTok, Instagram, X, Bluesky.
Try it
Paste a post or profile URL, see real numbers.
Live, against this API, right now. A post URL returns its metrics; a profile URL returns followers. No signup — it's free.
Coverage
Eight platforms, one endpoint.
Read straight from each platform's own public pages. Live status, kept honest.
YouTube
views · likes · date
Live
X / Twitter
views · likes · comments · shares · date
Live
TikTok
views · likes · comments · shares · date
Live
Bluesky
likes · comments · shares · date
Live
Mastodon
likes · boosts · replies · date
Live
likes · comments · views
Beta
Threads
profiles: followers · verified · posts: needs login
Beta
likes · comments · date
Live
How it works
Made to be called by software.
🤖
Built for agents
Discoverable via OpenAPI and llms.txt, callable with one GET, and payable over x402 if you want — no human in the loop, no dashboard.
⚡
No signup, no key
Nothing to set up. Hit a URL, get JSON. There's no account to create and no API key to manage.
🧱
One normalized shape
Every platform returns views · likes · comments · publishedAt. Integrate once, cover them all.
🌐
Real public numbers
Pulse reads the same public engagement a logged-out visitor sees on each platform's own page, and tidies it into JSON.
🎯
Honest errors
A deleted or private post returns a clean 404 content_unavailable — never silent zeros you'd mistake for real data.
🆓
Free & open
Pulse is free to use, built in public as a wall on walls.sh. No catch.
Pricing
Free.
It's free.
No signup, no key, no card. Free for personal projects and indie builds. If you're shipping a commercial product on top of Pulse — a SaaS, an analytics tool, an agent pipeline — Pro is $19/mo and includes commercial use + 10× the throughput.
FAQ
Questions, answered.
Do I need an account or API key?
No. Pulse has no signup and no keys. Your agent calls /metrics?url=… directly and gets JSON back.
Is it really free?
Free for personal projects and indie builds — no account, no card, no rate-limit surprise. If you're building a commercial product on top of Pulse, Pro is $19/mo: commercial license, 10× the throughput (1,200 req/min vs 120), and priority support.
What is x402?
x402 is the open "HTTP 402 Payment Required" standard. It lets software pay for a request with a USDC micro-payment and retry — gasless, no human in the loop. Pulse supports it so agents can pay their own way.
Which platforms work?
YouTube, X/Twitter, TikTok, Bluesky, Mastodon, and LinkedIn are live and verified. Instagram and Threads are in beta — profiles work for both; post metrics need a session cookie for Threads. See the live status above.
Is this public data?
Yes — Pulse reads the same public engagement numbers a logged-out visitor sees on each platform's own pages, and normalizes them into one JSON shape.
Can I call it from a browser app?
Yes — CORS is enabled for all origins, so a dashboard or browser-based agent can fetch() Pulse directly. No key needed.
What happens for a deleted or private post?
You get a clean 404 {"error":"content_unavailable"} — never fabricated zeros.
Try a call in the next 60 seconds.
Open the docs, copy the curl, run it. That's the whole thing.
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