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Challenge checkers

All forums related to Challenge Checkers (requesting, developing, questions, voting exceptions) Some sub forums will be read-only to some. 
Forums Topics Posts Last Post

Documentation

Documentation and guidelines for writing challenge checkers and creating tags. Also some useful links.

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5 6 May 04, 2016 07:03PM

Checker news

New api methods will be announced here. Changes in our data that is relevant to checkers scripts/tags will also be announced here.

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150 796 March 16, 2026 09:42AM

Checker requests

Need a challenge checker made or improved? This is where you should post your request.

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38 138 March 16, 2026 09:18PM

Method requests

Request new methods needed to make challenge checkers. One method request per thread please.

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26 159 May 16, 2025 03:58AM

Script development

Discuss your script development with others (bugs, optimizations, methods ...)

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88 436 February 16, 2026 09:39PM

Challenge checker exceptions

Not all Geocaches are clear if they are a Challenge or not. Therefore Project-GC has built a Challenge Exception-system. A part of the community has been granted access to this system, and they read through cache description to add votes if they believe these Geocaches are Challenges or not. In here, they can discuss extreme cases and see if they can come to an agreement.

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48 214 August 15, 2025 11:41AM

Miscellaneous

Topics that don't fit elsewhere, but still are related to challenge checkers.

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455 1,804 February 20, 2026 01:45PM

ARCHIVE Checker requests (completed)

Once a checker request has been fulfilled and the challenge owner (or checker requester) is satisfied the thread should be moved here by a moderator. Please allow some time before moving the thread, to allow feedback from the requester.

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24,214 103,787 March 16, 2026 08:18PM

ARCHIVE Checker requests (impossible)

Moderators will move threads from "Checker requests" into this forum after a while when it has been decided that the challenge checker isn't possible for one or another reason. The threads should not be moved right away. The challenge owner should have a chance to adjust his requirements if that helps.

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3,003 11,967 March 16, 2026 04:04PM