feat(examples): Add "Spending limit account" account abstraction example #8959
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TheMrAI
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Haven't checked the tests yet, just skimmed the rest.
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| public fun authenticate<T>( | ||
| account: &SpendLimit, | ||
| coins: &vector<Coin<T>>, |
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I don't get how this authenticate function prevents me from spending from the account. Some coins are passed here as auth inputs, but who to say that there are no more coins as PTB inputs that the authenticated transactions can spend?
On another note, spending limit without a time frame is rather useless, no? If I can spend $100 at a time, but I can repeat it as many times as I can then it's pretty easy to overspend 
If the intention is to have an account where you can only spend $X/period, it's pretty tought to implement without write access in the auth function.
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| } | ||
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| public fun authenticate( | ||
| account: &mut SpendLimit, |
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Right, this must be account: &SpendLimit. Check comment in authenticate_with_amount
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January 12, 2026 14:29
…uthentication of passing a u64 amount
…h, introduced a few extra helper functions in programmable_transaction
…w logic, added a few new tests
…wProof and adjusting error handling
…, added a few tests, deposits now are accepted from any address.
…ate test helper function
…nding limit authentication, updated ptb references
…ity, correct formatting in Move.toml
…functions and tests
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…ple (#8959) # Description of change Implement "Account with Spending limit" example for abstract accounts. ## Links to any relevant issues fixes #8651 ## How the change has been tested - [x] Basic tests (linting, compilation, formatting, unit/integration tests) - [ ] Patch-specific tests (correctness, functionality coverage) - [ ] I have added tests that prove my fix is effective or that my feature works - [x] I have checked that new and existing unit tests pass locally with my changes --------- Co-authored-by: miker83z <mirko.zichichi@iota.org>
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…ple (#8959) # Description of change Implement "Account with Spending limit" example for abstract accounts. ## Links to any relevant issues fixes #8651 ## How the change has been tested - [x] Basic tests (linting, compilation, formatting, unit/integration tests) - [ ] Patch-specific tests (correctness, functionality coverage) - [ ] I have added tests that prove my fix is effective or that my feature works - [x] I have checked that new and existing unit tests pass locally with my changes --------- Co-authored-by: miker83z <mirko.zichichi@iota.org>
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…ple (#8959) # Description of change Implement "Account with Spending limit" example for abstract accounts. ## Links to any relevant issues fixes #8651 ## How the change has been tested - [x] Basic tests (linting, compilation, formatting, unit/integration tests) - [ ] Patch-specific tests (correctness, functionality coverage) - [ ] I have added tests that prove my fix is effective or that my feature works - [x] I have checked that new and existing unit tests pass locally with my changes --------- Co-authored-by: miker83z <mirko.zichichi@iota.org>
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Description of change
Implement "Account with Spending limit" example for abstract accounts.
Links to any relevant issues
fixes #8651
How the change has been tested