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Questions tagged [fa2]

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FA2 showing as a Token and not NFT on TzKT

I am trying to develop an NFT based on the FA2 standard, but as of now, it is recognized as a Token and not as a NFT inside the balance tab: https://ghostnet.tzkt.io/...
Blixrow's user avatar
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1 answer
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sp.contract can get only explicit string as an entrypoint

I'm trying to call another contract from mine. It seems like I can't feed sp.contract with an entrypoint string that comes from an argument (it works perfectly fine with an explicit string like "...
PinkD's user avatar
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1 vote
2 answers
66 views

Creation of a FA2 Token (Fungible) and not an NFT

I created a smart contract to do several interactions with tokens. With the tutorial on the tezos website: https://tezos.com/developers/tutorials/nft-markeplace Here is my smart contract: https://...
TM Paolo's user avatar
0 votes
1 answer
8 views

Does anyone have template code calling balance_of entrypoint using JSLigo?

Does anyone have template code calling balance_of entrypoint using JSLigo? I want sth similar to Tezos.get_balance() but getting FA2 token balance instead of tez.
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1 answer
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Trying to create a FA2 token with Archetype

I’m trying to create a FA2 token, for this I use https://github.com/completium/archetype-fa2/blob/main/contracts/fa2_fungible.arl as an example. When I change line 71 to put my ipfs link in bytes (...
user avatar
0 votes
1 answer
46 views

Problem for creating smart contract NFT marketplace

I am trying to make an NFT Marketplace using the tutorials given here: https://tezos.com/developers/tutorials/nft-markeplace The first problem I had was when they give us the smartcontract, the ...
TM Paolo's user avatar
0 votes
1 answer
43 views

calling a FA2 smart contract transfer entrypoint from my contract in smartpy

Hello guys I am trying to call from my contract entry point from FA2 token contract that I have deployed. But I am unable to find anything on the internet. The only thing I found from the ...
Rukundo Aimé's user avatar
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0 answers
24 views

Updating baseURI not working in FA2

I have been working on a Worker contract which is the parent of an NFT contract. The NFT contract is used to create dynamic NFTs (by changing their baseURI) in the contract and accessing the tokens ...
Yash Garg's user avatar
0 votes
1 answer
20 views

got HTTPError while imporing

i am getting http error while importing fa2 library. i checked link and it says host error. did it moved to new address? File "./contracts/src/something.py", line 3, in FA2 = sp.io....
Sandip Bhujel's user avatar
0 votes
1 answer
26 views

Trying to give a custom metadata but still it is using the default base metadata mentioned in class Common

Hello I am using the template Fa2NFT library. When we add the compilation target we need to give it a metadata parameter. I am trying to give it a custom metadata but still it is using the default ...
user avatar
2 votes
1 answer
53 views

Smartpy 0.18.0 FA2 template

I am looking for the FA2 template with the new syntax in version 0.18.0 and above in smartpy. Is there something already available as the token template in the smartpy template are using old version. ...
Axel R.'s user avatar
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2 votes
1 answer
35 views

Pytezos: structuring call for FA2

Can you guys help me correctly structure a call to the update_operators in an FA2? I tried everything single combination I can think of, and it still doesn't work It says the structure should be like ...
João Gonçalo Morais's user avatar
0 votes
1 answer
38 views

changing from transfer to NoTransfer on FA2

I have deployed a contract with basic mint and transfer of NFT. I did some transaction on that contract like minting into one address and then transferring the token from one address to another ...
Kin's user avatar
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0 votes
1 answer
29 views

interact with FA2.0 Smart Contract

I deployed a FA2.0 Smart Contract and would need to interact with it through Java. I tried to use Tezosj (enter link description here) but it does not support FA2.0 smart contracts...hence, I would ...
tiamat's user avatar
  • 131
0 votes
1 answer
56 views

Default operators with FA2 library in SmartPy

I was wondering if, when using the FA2 library, there is a way to have the contract as a default operator so that users don't have to call update_operators ? Thank you
Synexio's user avatar
1 vote
2 answers
66 views

TzKt not recognising the tokens of my contract

TzKt can recognize the FA1.2 and FA2 tokens like this one: https://ghostnet.tzkt.io/KT1WkGNtcuGq6Rxh8CPSn9J1z7vgxsupBYps/operations/ Here, it understands that it is a token with GaGe as its symbol. ...
Ojuswi Rastogi's user avatar
1 vote
1 answer
31 views

Pattern by which you can determine that this is a FA2 contract, and not FA1.2

i want to understand how tzkt indexer works. If there is some pattern by which you can determine that this is a fa2 contract, and not fa1.2? Maybe there is a prefix by which you can determine? I saw ...
user avatar
0 votes
1 answer
38 views

Is operator support required for standard NFTs?

I'm making my first FA2-based NFT contract and I want to reduce the amount of code by sacking the operator logic. To be clear, I'm still following the FA2 interface, but the entrypoint now looks like ...
Bijou Trouvaille's user avatar
0 votes
1 answer
42 views

Call FA2 transfer from another smart-contract with archertype

I’m trying to call a FA2 transfer function from another smart-contract but I’m not sure how to write it in archetype. Here is my code so far archetype Test( a_contractToken : address, a_quantity: ...
Thib's user avatar
  • 1
1 vote
2 answers
116 views

How to retrive parameters from a Michelson function?

I'm developing a Flutter application and used Dartez plugin to transfer token contracts from one wallet to another wallet. The Dartez package has a function named sendContractInvocationOperation for ...
Taleb's user avatar
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1 answer
70 views

Clarifications on FA2 operator

I am looking for some clarifications around FA2 tokens and the notion of operators, as I’m not sure if I get it right or not. My first question is: Is it possible to have multiple operators on a ...
Julien's user avatar
  • 3
2 votes
1 answer
170 views

How to get the owner of an FA2 token on chain

For an FA2 nft contract, how can I get the address of the owner of token_id 0 from inside another contract?
tinuggunit's user avatar
0 votes
2 answers
72 views

FA2 view not working correctly

I've deployed an FA2 token that is supposed to use a token_metadata view to display the token metadata. The view is works fine if you call it directly, but it doesn't seem to be affecting the token ...
littlezigy's user avatar
0 votes
2 answers
107 views

How to change the storage to transfer of an NFT?

I would like to be able to change the price of an nft when transferring it, but I can't change it it gives me an error... (** Implementation of the FA2 interface for the NFT contract supporting ...
oriana's user avatar
  • 119
0 votes
1 answer
178 views

I can't import my nft into my temple wallet

I followed the tutorial https://forklog.com/sp/dev-on-tezos/en/nft-issuance/ to be able to create an nft via FA2 but my temple wallet does not recognize it.. . My Smart Contract (pascaligo) : //...
oriana's user avatar
  • 119
0 votes
1 answer
16 views

is it necessary to implement the permissions_descriptor?

With FA2 NFT tokens, is it necessary to implement the permissions_descriptor? As far as I can see in tzkt, it doesn't look like it's actually being used. Are there any contracts that are actually used?...
ans st's user avatar
  • 1
0 votes
1 answer
97 views

Is it possible to dynamically generate FA2 token metadata?

For example, I know the code below isn't valid syntax, but would doing something like it be possible to dynamically set metadata content based on the token id? If so, how would that work? @sp....
JJJ's user avatar
  • 557
1 vote
1 answer
188 views

Is there a "standard" way to load off-chain metadata for all tokens from a single off-chain data source in an FA2 contract?

Let's say I want to create a fixed cap of 10,000 NFTs. I pre-generate the token_metadata and store it on IPFS. The token_ids are only recorded on the FA2 contract when they're bought. If I don't want ...
JJJ's user avatar
  • 557
0 votes
2 answers
59 views

Do FA2 entrypoints need to be at the top level in order to comply with the spec?

Most of the example FA2 implementations I've found, as well as the deployed contracts I've investigated have the required FA2 entrypoints (transfer, balance_of, update_operators) buried in the second ...
Nox's user avatar
  • 131
1 vote
1 answer
44 views

Best way to duplicate/sync private database with FA2 contract transactions & balances

If you wanted a private DB to have all of the transactions,balances etc. of a particular FA2 contract deployed on mainnet, what would be the best way of achieving this? Is it possible to have a ...
redbluegreentoast's user avatar
2 votes
1 answer
567 views

How to store and load custom FA2 NFT metadata?

First time I'm writing a smart contract. If anything doesn't make sense at all, feel free to call out what specifically doesn't make sense and suggest a better approach. Thanks! At a high level I just ...
JJJ's user avatar
  • 557
1 vote
1 answer
353 views

Calling contract entrypoint having complex parameters

I am trying to call FA-2.0 transfer entry point using tezos taquito, I have also gone through https://tezostaquito.io/docs/complex_parameters/. however I get the error below when I try to call ...
Harsha Bakku's user avatar
2 votes
1 answer
121 views

How to monitor RPC block responses for token transfers?

I am wondering how to effectively monitor for some given address for FA 1.2 and FA 2 token balance updates. Given that the entrypoints to the contract are defined, I'd like to write something which ...
enforser's user avatar
2 votes
0 answers
91 views

how to hook function in smartpy FA2

when calling transfer method, how to call hook method on received smart contract. I'm using fa2 in smartpy
MS.J's user avatar
  • 51
1 vote
1 answer
93 views

FA2 from/to serialization

In the FA2.0 standard the sender and receiver is send as Bytes (vs. send as string for FA1.2). Expected result: When decoding the addresses (string) to their public key hash representation I would ...
Felix Laufenberg's user avatar
3 votes
1 answer
212 views

How do I call the FA2 balance_of endpoint through Truffle?

I have written a contract to implement FA2 and I have a Truffle/JavaScript setup to test this contract while running against a sandboxed node. I can test the transfer endpoint and the update_operators ...
Thorkil Værge's user avatar