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Featured products

Normal shirt product image (4) Normal shirt product image (12)

Normal shirt

¥4,142
+2
I can see the curvature of the Earth product image (1) I can see the curvature of the Earth product image (2)

I can see the curvature of the Earth

¥8,283
Private Keys & Public Mischief product image (1) Private Keys & Public Mischief product image (2)

Private Keys & Public Mischief

¥4,142
Minimum Viable Flex product image (1) Minimum Viable Flex product image (2)

Minimum Viable Flex

¥4,142
Evals shirt product image (1) Evals shirt product image (2)

Evals shirt

¥4,142
San Mateo 2025! product image (1) San Mateo 2025! product image (2)

San Mateo 2025!

¥4,142
Promptfoo Open Source Participation Acknowledgement Shirt - 2026 Edition product image (1) Promptfoo Open Source Participation Acknowledgement Shirt - 2026 Edition product image (2)

Promptfoo Open Source Participation Acknowledgement Shirt - 2026 Edition

¥4,142
+1
run product image (1) run product image (2)

run

¥4,142
Just a goddamn normal shirt smaller logo product image (1) Just a goddamn normal shirt smaller logo product image (2)

Just a goddamn normal shirt smaller logo

¥5,237
+1
simple hoodie product image (1) simple hoodie product image (2)

simple hoodie

¥16,566
Ship It Together product image (1) Ship It Together product image (2)

Ship It Together

¥8,283
Pending Review product image (1) Pending Review product image (2)

Pending Review

¥4,142
Promptfoo: Poop Early, Poop Often product image (1) Promptfoo: Poop Early, Poop Often product image (2)

Promptfoo: Poop Early, Poop Often

¥4,142
Pixel Panda Promptfoo Hat product image (3) Pixel Panda Promptfoo Hat product image (8)

Pixel Panda Promptfoo Hat

¥4,142
+2
Foily Foo Sticker product image (1) Foily Foo Sticker product image (2)

Foily Foo Sticker

¥828
The Custom Provider Whisperer Coffee Mug product image (1) The Custom Provider Whisperer Coffee Mug product image (2)

The Custom Provider Whisperer Coffee Mug

¥4,142
YOU PARTICIPATED product image (1) YOU PARTICIPATED product image (2)

YOU PARTICIPATED

¥2,071 ¥165,664
boring af product image (1) boring af product image (2)

boring af

¥1,656,641 ¥4,142
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