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Questions tagged [api]

Application Programming Interface

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0 votes
1 answer
102 views

How to loop through multiple pages of blockfrost api in Javascript

I'm trying to count the assets at a blockfrost api endpoint. It only shows 100 items on a page though. How do you loop through all the pages and extract the asset count? Thanks for any help. const ...
0 votes
1 answer
71 views

How can I Convert BlockFrost API Code to Dandelion API?

I have somehow managed to get a lot of code for BlockFrost API, however, I want to build some free applications for people to monitor blockchain data from a website dashboard. To take advantage of the ...
3 votes
1 answer
134 views

Is there a way to get the current circulating supply of an asset via API?

More specific, I am looking to fetch the circulating supply of native cardano tokens with the Blockfrost API. I know how to get the total supply, but I was wondering if there is any possibility to get ...
0 votes
1 answer
28 views

How to get total fees of a NFT transaction in cardano blockchain?

Is there any api for to get transaction fees of the NFTs when buy or sold and does the transaction fees includes Royalty fees ?
0 votes
1 answer
16 views

How to find the last time an asset was transferred from one wallet to another

Sounds easy enough to do with something like Blockfrost but the best method I could find involved many API calls to different endpoints. It doesn't sound like something that should be too hard so ...
0 votes
0 answers
26 views

division amount to multi cardano address

There is a way to split a Cardano address among several addresses, for example, deposit an amount to one address and divide it equally among the holders of 100 NFTs. thanks
0 votes
1 answer
260 views

How to know wallet name by wallet Address?

I am fetching the data of ADA rate in USD through api(https://studio-api.nmkr.io/v2/GetAdaRates) and I want to fetch the some data of related to wallet like its wallet name, wallet image, wallet ...
1 vote
1 answer
135 views

How can I add Webpack to a React app so I can use Lucid with it?

I have a React app (created with npx create-react-app) that doesn't have Webpack installed. I want to add lucid-cardano to it. Going through Lucid documentation, I found that Webpack is a dependency, ...
0 votes
1 answer
134 views

Compile errors when importing Cardano Serialization Lib Browser in React

I'm getting several compile errors as soon as I import @emurgo/cardano-serialization-lib-browser in my project, all of them similar to these: ERROR in ./node_modules/@emurgo/cardano-serialization-lib-...
0 votes
2 answers
31 views

Does nmkr.io provide public api?

Does nmkr.io provide free usable cardano apis for NFTS or do we have to mint the nfts and build a project on their platform something like that ...and then we can use their api because in their apis ...
2 votes
1 answer
34 views

Api for historical USD rates?

I want to fetch the historical USD rates from a timestamp, is there any api available for that could be used in javascript?
0 votes
1 answer
413 views

How to get assets with a specifc policy id from a wallet address using BlockFrost OpenAPI

For context, I'm trying to get all NFTs with a policy id, but only from a wallet address. I'm using BlockFrost OpenAPI, and it seems that I can only get assets with a policy id from the entire ...
1 vote
1 answer
43 views

Is there a possibility to fetch the volumen of e.g Minswap with Koios or Blockfrost?

I am looking for a way to get the volume of certain protocols on Cardano(e.g. Minswap or SundaeSwap). I thought of using Koios or Blockfrost, but I am not entirely sure how to get volume. If there's ...
0 votes
1 answer
46 views

Get list of users addresses that minted native asset NFT

I would like to get a list of user addresses, that minted a native asset NFT. Is this possible? I do not want current holders of the NFT, but the original minting NFT holders.
0 votes
1 answer
159 views

How can I find the logo of a token in the Cardano Token Registry?

I know this is the API for accesing the Cardano Token Registry (https://tokens.cardano.org/metadata/) but I don't know how to get and process the logo image of a token from there. Anyone?
1 vote
1 answer
356 views

Is it MuesliSwap the only DEX with an API?

I'd like to build a backend that brings data from all Cardano DEXes. I have been exploring this link: https://docs.muesliswap.com/cardano/api/api-v1 Is it the only DEX that provides an API? I didn't ...
0 votes
1 answer
66 views

How can I query the version of the node using the APIs?

I want to know the version of a node using API. I know I can use the CLI to know the version, but can't I use the API? Any advice would be greatly appreciated! https://input-output-hk.github.io/...
2 votes
2 answers
578 views

Token price API

Besides http://analytics.muesliswap.com/ticker - are there any other APIs that return token price?
0 votes
1 answer
73 views

How to specify the Cardano address for BlockFrost Transaction Endpoint?

Hi im trying to call this https://docs.blockfrost.io/#tag/Cardano-Addresses/paths/~1addresses~1{address}~1transactions/get from some code I wrote (images attached below) and get a None or Empty value ...
2 votes
1 answer
325 views

How To Get All Transactions of Associated With an Address In A Given Interval?

okay so given some reciving address such as addr1qxq7k07cnt8vstdmygu7lpw0tyyssu4trs27qq6f7xjpmvrdrr3j8j5k5yacga4ckv6lnx4p0la57q7nf24eszqk0r2q9axgqv how can I use a service like BlockFrost (or any ...
0 votes
2 answers
95 views

How to securely call Blockfrost or other API service from Smart Contract?

I just spent a few days trying to find a way to access account data from a smart contract using only plutus. Turns out IOG has yet to put that functionality in (at least that's how I understand it) ...
1 vote
0 answers
125 views

How to get prices, volume and latest transactions of a liquidity pool

I am working on a app to view charts and more. For the charts I need open, close, high, low prices for any intervals like 1min, 5min, 1h etc for a specific token/pool. So far there seems a lack of ...
1 vote
2 answers
63 views

How to get blockchain block load from blockfrost?

I'm currently going through Blockfrost documentation and trying to figure out if there is a way to fetch block load for each day. Seems like they don't have such option, in that case: Is there a way ...
1 vote
1 answer
97 views

Is there an API for Cardano Blockchain Insights?

I'm looking for any API or any source that would allow me to export data & statistics? (Specifically Blockchain load per day) I found that DataStudio has stats, yet it doesn't have any export ...
0 votes
3 answers
106 views

Creating wallets using apis

I am wondering whether the cardano block chain has the apis which i can integrate with a third arty cms. For example if i call an api the wallet has to be created and i can sent funds using the same ...
1 vote
2 answers
134 views

find holders from same policy but different asset name

I have a policy ID with hundreds of NFT with different asset name (for eg TTS19, TTS20, etc) what is the easiest way to find all addresses/wallets which have this NFT(holders)? I tried with koios and ...
0 votes
1 answer
63 views

Is the Transaction Hash from block frost the same as the transaction id?

When making an API (HTTP) Get request to the blockfrost API service, you can specify an address and get the transactions at the address (https://docs.blockfrost.io/#tag/Cardano-Addresses/paths/~...
1 vote
1 answer
225 views

How to get NFT count of wallet address

I'm wanting to display the NFT count of a wallet on my website. I've gone through the blockfrost SDK and I don't see anything that relates to NFTs. Is there a method to return this value? Here is my ...
1 vote
1 answer
147 views

How can I configure and send a transaction to the Cardano chain using python

I have written some plutus contracts, but they use parameterisation and the params are gained through a REST API. I am using python3 to interface with the API, but would like to be able to script an ...
2 votes
0 answers
119 views

How to link custom API endpoints with Plutus script? (Without Blockfrost or PAB)

I have a few questions, which I think might interest a lot of folks here. Me and my team we are developing an app on Cardano and we want to avoid using PAB or Blockfrost for our infrastructure. We are ...
0 votes
1 answer
507 views

API to get NFT Floor Price

Does anyone know of a public API that I can use to get the floor price for ALL Cardano NFT projects. I have created a Database listing all the Cardano NFT projects (currently there are just over 5000 ...
10 votes
1 answer
170 views

Between the cardano-graphql and cardano-rosetta APIs, which one is recommended for apps and dapps integration?

From what I understand, cardano-graphql as well as cardano-rosetta APIs enable interaction with the Cardano blockchain. Which of these is recommended for developing apps/dapps that interact with ...
1 vote
0 answers
63 views

Listening for rollbacks

How can you listen for all chain rollbacks? For example every time there is a rollback, based on the depth, I'd like to take some action on my app's backend. Is there any API that could enable this?
3 votes
1 answer
270 views

Cardano Serialization Lib Usage

I am going through Cardano developer docs and the different APIs used to interact with the Cardano network. In the list is Cardano Serialization Lib which has the description, This is a library for ...
2 votes
1 answer
589 views

Fetching exchange prices via an API?

Are there any APIs currently available that let you fetch Cardano native token prices without web-scraping? SundaeSwap, ADAX, MuesliSwap, and MinSwap don't appear to have this functionality. ErgoDEX ...
4 votes
2 answers
489 views

Cbor address to bech32 type address in JS or python

I have managed to retrive a user address from a dapp connector wallet using JS: api_promise = window.cardano.{wallet}.enable(); api_promise.then(function(api) { addr_promise = api.getUsedAddresses();...
1 vote
1 answer
135 views

I hear that Daedalus Is a Full Node Does That Mean I Can Set Up a DB Sync Server On Top of It?

The Daedalus wallet is said to be a full node wallet. Does that mean I can set up something similar to blockfrost on top of it? If so how?
0 votes
1 answer
78 views

Cardano dapp user authentication based on the wallet address

What are the best options to add user-authentication system based on the wallet address for my website? Thanks
2 votes
1 answer
104 views

How to retrieve an addresses transaction history inside a plutus contract

I am trying to implement so logic to ensure smart contract (SC) validation upon certain conditions - which are derived from the end-users transaction history. If I parameterise the SC and take the ...
3 votes
2 answers
119 views

Is there a publicly available Cardano API with pre-indexed blockchain data?

I'm looking for a public API that has idempotent endpoints that can be used to query for transaction data for a given address. Specifically, I'm looking for reward payout data. Does this exist in this ...
6 votes
3 answers
1k views

How to get all NFTs of a wallet address?

I'm trying to retrieve all assets which are located at the specific wallet address, I queried through the docs but couldn't find anything suitable. Can anybody provide me some help regarding this ...
0 votes
1 answer
100 views

How to enable cardano CLI REST API on DigitalOcean?

I've set up a Cardano node using DigitalOcean's droplet, and I've gotten to the point where I can run: cardano-wallet serve --port 1337 --mainnet --database ~/cardano/db --node-socket ~/cardano/...
2 votes
1 answer
63 views

Cardano Data for Data Analytics and Data Visualisation

Where can I get Cardano raw data or formatted data (e.g. no. of wallets, ADA price, etc) that I can use for data science, analytics and visualisation?
1 vote
1 answer
235 views

Received the transaction id but the transaction never happened

I used to work with Blockfrost API to submit my transactions. A few days ago, I ran into this problem in which my transactions were submitted successfully (The API returned me the transaction id ...
6 votes
1 answer
372 views

Blockfrost, GrapgQL or any API for cardano help, working with javascript

I am building an MERN stack app cardano dex tool, I want to use Blockfrost. I have installed the SDK in Node.js backend, but there are only very few examples on how to get any kind of data from it. ...
2 votes
1 answer
57 views

What are the security implications to having cardano-wallet run on a public server?

I want to use a public cardano-wallet server running on mainnet, so I can connect to it and create wallets for users of my iOS app. How can I set up all transactions to be encrypted (over SSL) ...
1 vote
2 answers
319 views

How do I get the http endpoint to work for cardano-wallet?

Using a DigitalOcean Ubuntu droplet, I have: successfully installed cardano-node according to: https://developers.cardano.org/docs/get-started/installing-cardano-node/ cardano-cli 1.32.1 - linux-...
8 votes
2 answers
773 views

Nami wallet showing getBalance returning a NaN

Hi i just recently started working with Nami Wallet to be implementes in a web app, but when im trying to get my wallet balance: window.cardano.getBalance().then(res => console.log(res)) its ...
0 votes
2 answers
376 views

How to obtain PubKeyHash from Address ShelleyAddr

Is there a way to do this programmatically? I have an Address ShelleyAddr obtained from deserialiseFromBech32 AsShelleyAddress and need its Plutus.V1.Ledger.Crypto.PubKeyHash
1 vote
1 answer
162 views

Get a list of top asset hodlers for a specific asset

I'm using the Blockfrost API to get a list of the top holders of an asset. ie. The people with the highest quantity of this asset in their wallet. I'm using Blockfrost's API, and the specific call I'm ...