Tools
Built only on fields this API returns, with the field name and the surface printed on every page.
Profile viewers
Ten platforms, because followers was measured as populated on ten of the eleven profile routes on 2026-10-02 — each page names the exact field it reads.
| Tool | Field read | Surface |
|---|---|---|
| Bluesky profile viewer | followersCount | public.api.bsky.app (official, no key) |
| GitHub profile viewer | followers | api.github.com (official, authenticated) |
| Instagram profile viewer | follower_count | public profile page, logged out |
| Mastodon profile viewer | followers_count | the account's own instance (official API, no key) |
| Medium profile viewer | socialStats.followerCount | public profile page, logged out |
| Pinterest profile viewer | mainEntity.interactionStatistic.userInteractionCount | public page, logged out |
| SoundCloud profile viewer | followers_count | public page, logged out |
| Threads profile viewer | follower_count | public page, logged out |
| TikTok profile viewer | statsV2.followerCount | public page, logged out |
| YouTube channel viewer | statistics.subscriberCount | googleapis.com Data API v3 (official, authenticated) |
Engagement rate calculators
Three platforms, because only three have a posts route that carries per-post counters. Each page prints the formula it used.
- Bluesky engagement rate calculator
- Mastodon engagement rate calculator
- Threads engagement rate calculator
What the engagement rate is made of
The numerator uses the four counters PostItem.metrics carries, and there is no fifth: likes, replies, reposts, quotes. The denominator is the follower count from the profile route. Each calculator page prints the formula it used, because a rate without its formula in view is a number nobody can check.
There is no Instagram or TikTok version, and the reason is about what this API returns rather than about the platforms:
- Instagram has no posts route with per-post counters here: the two post-shaped routes are highlights and embed, and neither carries likes or replies.
- TikTok has no posts route at all in this API — only profile, and the three video routes, none of which returns a list of a handle's posts with counters.
What is not here, and why
The competitor ships 32 tools. We sustain 14. The gap is not effort — each one below needs data this API does not return, or a number nobody measured.
- Earnings and money calculators
- Every one of them needs a CPM that nobody gave us. Publishing one would be inventing a number with the face of a measurement.
- Transcript generators
- There is no transcription route in this API today.
- Comment analyzers
- There is no comments route: third-party comments do not cross into our product, by the privacy decision in the vault.
- LinkedIn, Amazon, Twitch, Naver and Facebook tools
- There is no API route for any of those platforms here.
- A Linktree profile viewer
- Measured on 2026-10-02: the page is readable and the profile is found, but followers comes back null — Linktree is a link-in-bio page and has no follower count. Nothing to show.
- Instagram and TikTok engagement calculators
- Both need per-post counters. Instagram's only post-shaped routes are highlights and embed, and TikTok has no posts route at all.