Cobblr Labs
Weird little tools for the
XRP Ledger
.
Built by a penguin, powered by curiosity. ๐ง๐๏ธ
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XRPFeesWTF
How much XRP have you burned on gas fees? Paste any address, get the damage + a full breakdown of transaction types. Leaderboard included.
LIVE
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Hash Harmony
The XRP Ledger as an ambient radio station. Every transaction becomes a note โ payments play piano, offers hit the drums. Put it on and vibe.
LIVE
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How to use Batch
Batch examples for XRPL Batch transactions: 9 examples covering all four modes (All or Nothing, Only One, Until Failure and Independent), each run live on mainnet with receipts and a short clip.
9 BATCH EXAMPLES
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Labs Mystery Box
Provably fair. On-chain. A Xahau testnet mint party with 10 bot frens: a Hook rolls each box with on-chain RNG, mints a URIToken, and the recap page lives on the ledger.
NEW ยท TESTNET TOY
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On-chain pages
Web pages that live on the Xahau testnet ledger, not on our servers: the Mystery Box and Bolt Buddies mint party pages and a mini site stitched from three accounts.
NEW ยท TESTNET TOYS
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Daily $LHT pulse
Price, AMM pool, TVL and holder count for $LHT, posted every day on @CobblrLabsBot. {Your Ledger, Your Luck}
POSTED DAILY
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Concluded experiments
ยท finished lab runs, archived with their receipts. Latest: Federation of Unique Nodes (archived Oct 18, 2026) and Flywheel Cat (ended Oct 13, 2026).
Browse the archive โ
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@CobblrLabsBot
is the lab's public account: Batch examples, mainnet receipts and the daily $LHT pulse.
Follow on X โ