A reaction clips API for video

What you get

• Green screen video clips with sound. Trending reaction memes, cut out on a flat key color, as MP4s with the meme's audio. New clips every day.
• Search by reaction. Names, descriptions and tags written for what happens in the clip, so q=side eye or q=happy dance finds it.
• What's trending now. /v1/trending ranks the clips people use most in the Green Screen Memes app right now.
• Everything to composite it. chromaKeyColor says which color to key, durationSeconds how long it runs, thumbnailUrl what it looks like. The FFmpeg and Remotion guides do the rest.

What the clips turn into

Each of these is one clip from the library keyed over an ordinary photo, with a caption on top. The same clip works over any scene, which is what makes one library go a long way.

How it differs from GIF and image meme APIs

Different jobs, different tools. If you're building a GIF picker for a chat app, a GIF API is the better fit, with a far bigger library. If you need captions on classic image templates, use an image meme API. This one is for putting a reaction clip into a video.

It's a smaller, curated library: about two thousand clips, not millions. It doesn't generate memes or remove backgrounds from your own footage.

REST in three calls

Send your key as a Bearer token, from your server (the API doesn't send CORS headers). Search:

curl -H "Authorization: Bearer $GSM_API_KEY" \
  "https://api.greenscreenmemes.app/v1/memes?q=side%20eye&limit=3"

Lists return { data, total, nextCursor }. The first result of that search, as the API returned it (media links shortened):

{
  "data": [
    {
      "id": "Dog giving awkward side eye",
      "type": "green_screen",
      "name": "Dog giving awkward side eye",
      "description": "A small tan dog slowly turns its head to give a wide-eyed, suspicious side-eye toward the camera while dramatic music plays.",
      "tags": ["dog", "side-eye", "awkward", "suspicious"],
      "chromaKeyColor": "green",
      "durationSeconds": 6,
      "thumbnailUrl": "https://api.greenscreenmemes.app/v1/media/m/Dog%20giving%20awkward%20side%20eye/thumbnail?k=…",
      "videoUrl": "https://api.greenscreenmemes.app/v1/media/m/Dog%20giving%20awkward%20side%20eye/video?k=…",
      "createdAt": "2026-02-21T22:00:00.000Z",
      "updatedAt": "2026-02-21T22:00:00.000Z"
    }
  ],
  "total": 25,
  "nextCursor": "Mw"
}

What's trending in the app, with a rank on each clip (1 is the most used):

curl -H "Authorization: Bearer $GSM_API_KEY" \
  "https://api.greenscreenmemes.app/v1/trending?limit=10"

# Fresh links for a clip you already know (URL-encode the id)
curl -H "Authorization: Bearer $GSM_API_KEY" \
  "https://api.greenscreenmemes.app/v1/memes/Dog%20giving%20awkward%20side%20eye"

Media links are signed for your key and expire after about 6 hours: download the file, don't store the link. Errors return { error: { code, message } }. The rest (collections, tags, usage, removed clips) is in the docs and the OpenAPI spec.

From an AI agent

The same key works over MCP. One line connects Claude Code; the MCP page has Cursor and Claude Desktop.

claude mcp add --transport http green-screen-memes https://api.greenscreenmemes.app/mcp \
  --header "Authorization: Bearer $GSM_API_KEY"

Pricing

In US dollars; yearly billing is 20% off. Nothing is billed past a plan: at the limit, requests return 429 until the next month or an upgrade. Details on the pricing section.

What you can use the clips for

These are internet memes. Green Screen Memes makes the green screen versions, tags and curates them; the original footage isn't ours, a plan doesn't license it to you, and how you use a clip is your responsibility. On Starter and up, clips can go in apps and in videos you publish for yourself or clients, including commercially; Sandbox keys are for building and testing. Clips of identifiable people can't go in paid ads, sponsored posts or endorsements (animals, objects and cartoons can). Don't resell the library, and stop using clips that GET /v1/removed lists. The terms have the rest.

Questions