The playground

Try any of 1042 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com
post/fitness/v1/by_target1 credit

All exercises that target a specific muscle — e.g. 'biceps', 'triceps', 'quads', 'glutes', 'lats'. Returns name, equipment, body part, and step-by-step instructions.

Parameters

Target muscle to filter by (e.g. biceps, triceps, quads, glutes). Matched by substring; use target_list for the live options.

Results per page (1-100, default 20). Larger values are clamped to 100. (1–100)

Pagination offset (skip N results). Page forward with meta.next_offset. (0–)

wger language id for names/instructions (2 = English, 1 = German, 4 = Russian, 5 = Spanish, …). Defaults to English.

request preview
curl -X POST https://api.reefapi.com/fitness/v1/by_target \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{}'

Hit Send to run this endpoint live.