Green Screen Memes API examples
Copy-paste examples for the Green Screen Memes API:
about 2,100 green screen meme clips (trending reaction memes on solid green, blue or
red backgrounds, most with their original sound), searchable by reaction, action or
subject, over REST or MCP. New clips are added every day.
Each example finds a clip, downloads it and keys it over your own photo or video,
ending with a 1080x1920 MP4 for Shorts, Reels or TikTok.
Use as a Claude Code plugin
This repo is also a Claude Code plugin marketplace. The plugin sets up the MCP server
and adds a make-memes skill that plans captions, finds clips and composites them with
ffmpeg, one meme or a whole batch. Set GSM_API_KEY (free key)
in the shell you start Claude Code from, then run:
/plugin marketplace add green-screen-memes/green-screen-memes-api
/plugin install green-screen-memes@green-screen-memes
Then ask something like "I need a lot of memes for my business". Codex and other
agents: see AGENTS.md for the same workflow and MCP setup.
| Example | What it shows | Run it |
|---|
claude-code/ | Connect the MCP server, then make a meme from one prompt | claude mcp add --transport http green-screen-memes https://api.greenscreenmemes.app/mcp --header "Authorization: Bearer $GSM_API_KEY" |
node/ | Search, download and composite from Node 18+, no dependencies | node examples/node/meme.mjs "shocked cat" background.jpg |
python/ | The same with the Python standard library | python3 examples/python/meme.py "shocked cat" background.jpg |
ffmpeg/ | curl + ffmpeg scripts: key over a photo, or over a video with mixed audio | examples/ffmpeg/key-over-image.sh background.jpg greenscreen.mp4 green |
remotion/ | A Remotion composition with a pre-keyed transparent clip | cd examples/remotion && npm install && npm run studio |
trending-to-short/ | Today's #1 trending clip as a vertical short | node examples/trending-to-short/trending-to-short.mjs background.jpg |
Everything except the MCP setup needs FFmpeg
(with ffprobe) on your PATH.
1. Get a free key
Sign in at https://api.greenscreenmemes.app/dashboard (Google or email link) and
create a free Sandbox key: 50 video downloads in total and 30,000 calls a month,
for building and testing. Then:
cp .env.example .env # put your key in GSM_API_KEY
set -a; source .env; set +a # or: export GSM_API_KEY=gsm_live_...
Keep the key on your machine or server. The API doesn't send CORS headers, so call
it from a backend, not from a browser.
2. Use it from an AI agent (MCP)
claude mcp add --transport http green-screen-memes https://api.greenscreenmemes.app/mcp \
--header "Authorization: Bearer $GSM_API_KEY"
Cursor and other MCP clients: url https://api.greenscreenmemes.app/mcp with the
same Authorization header. Ready-made configs are in
examples/claude-code. The server is also in the official MCP
Registry as app.greenscreenmemes.api/green-screen-memes.
Then ask, for example:
Make a meme for my coffee shop. Find a green screen of someone or something
reacting with pure relief or joy, key it over ./shop.jpg as a vertical video and
caption it "Monday, fixed."
Tools: search_green_screens, get_green_screen (video link and a ready ffmpeg
command), get_trending, list_collections, get_collection, list_tags,
get_usage.
3. Or call REST
curl -H "Authorization: Bearer $GSM_API_KEY" \
"https://api.greenscreenmemes.app/v1/memes?q=side%20eye&limit=5"
| Endpoint | |
|---|
GET /v1/memes?q=&tag=&color=&updatedSince=&limit=&cursor= | Search or list green screens |
GET /v1/memes/{id} | One green screen (URL-encode the id) |
GET /v1/trending | What's trending in the Green Screen Memes app right now, with rank |
GET /v1/collections, GET /v1/collections/{id} | Curated collections |
GET /v1/tags | Most used tags |
GET /v1/usage | Your plan and this month's usage |
GET /v1/removed?since= | Clips taken down at a rights holder's request |
Lists return { data, total, nextCursor }; errors return { error: { code, message } }.
Each clip has id, name, description, tags, chromaKeyColor (green, blue,
red or none), durationSeconds, thumbnailUrl and videoUrl. Media links are
signed for your key and expire after about 6 hours, so download the file and don't
store the link.
Full reference: https://api.greenscreenmemes.app/docs ·
OpenAPI: https://api.greenscreenmemes.app/v1/openapi.json ·
For LLMs: https://api.greenscreenmemes.app/llms.txt
4. Key it with FFmpeg
Over a photo (vertical 1080x1920, clip at the bottom, keeps the clip's sound):
ffmpeg -loop 1 -i background.jpg -i greenscreen.mp4 -filter_complex \
"[0:v]scale=1080:1920:force_original_aspect_ratio=increase,crop=1080:1920,setsar=1[bg];\
[1:v]chromakey=0x00ff00:0.2:0.05,scale=1080:-2[fg];\
[bg][fg]overlay=(W-w)/2:H-h:shortest=1,format=yuv420p[v]" \
-map "[v]" -map "1:a?" -c:v libx264 -crf 20 -c:a aac meme.mp4
Key colors: green 0x00ff00, blue 0x0000ff, red 0xff0000. With none, the clip
is used as-is. If a green fringe stays, raise 0.2 a little; if parts of the subject turn see-through, lower it. Over a video with mixed
audio: see examples/ffmpeg.
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