You can recover many card codes of the internet that can be used and used, but most of them cant be used after a peson has enetred the card code into their card collection (most combo card are as such).
You can create your own agent card.
Here is a few of other peoples agent cards that you can add to your collection.
P29RM2TNXP -Mine
P297G747XP
P26FF7N7XP
P29HKFCWXP
P2NNPCCCXP
P26D7G47XP
P2P9XCPTXP
P22GCWF7XP
P2PTPNRGXP
P2RM7RM3XP
P29PKCFNXP
Feel free to edit your in so that we can share. Also add as many as you can so that you can have a huge card collection.
P23hrfxfxp;P3RW4FPNXP and P44RJXMTXP
P23hrfxfxp add me too P3CDNFNTXP Hey add me P2XG22P6XP Me too! P3WHGTHMXP Me too P49K47D9XP
They are not reusable. Buy codes on eBay if you really want them. ~James the Janus Check out this reusable card code! P3GJW7JEXP actually here's one: P4X363G9XP
The code to unlock this clue is g5hj897z21
You can purchase card packs with codes for The 39 Clues. Examples of codes are: G69CTWHC9T, G69CKR3K9T, 223M6DTNX2.
857887578
P23hrfxfxp;P3RW4FPNXP and P44RJXMTXP
You can only get the codes by purchasing The 39 Clues Card Pack.
this is a rare card code:P24NXKNMXP
Here is a rare oneThe death clue: p462nrgxp
You need to play the missions, buy the books, and buy the card packs. Enter the card codes. Then you can gather clues.
P29rp379xp i got it in book 2. Along with some others.
there is no clue there is a puzzle
They organize the 39 clues cards by card numbers.
P23hrfxfxp add me too P3CDNFNTXP Hey add me P2XG22P6XP Me too! P3WHGTHMXP Me too P49K47D9XP
2g2dhjj7x2
here is one:P24NXKNMXPThis is a 39 clues card code : 24GW9PJWX3 - It unlocks 6 cards on the site :) My card code is P3JG2JXMXP. Please add me :)P49K47D9XP also is an agent number