Near API Js
Guide for developing with near-api-js v7 - the JavaScript/TypeScript library for NEAR...
Install
npx skills add internet-court/internet-court-skill --skill near-api-js -g -a claude-code -y- Repository
- internet-court/internet-court-skill7k
- Category
- Engineering
- Updated
- 9d ago
- License
- See repository
- Context cost
- Mediumabout 3,000 tokens
- Runs scripts
- No, instructions only
What it does
Guide for developing with near-api-js v7 - the JavaScript/TypeScript library for NEAR blockchain interaction. Use when: (1) building apps that interact with NEAR blockchain, (2) creating/signing transactions, (3) calling smart contracts, (4) managing accounts and keys, (5) working with NEAR RPC API, (6) handling FT/NFT tokens on NEAR, (7) using NEAR cryptographic operations (KeyPair, signing), (8) converting between NEAR units (yocto, gas), (9) gasless/meta transactions with relayers, (10) NEP-413 message signing for authentication, (11) storage deposit management for FT contracts. Triggers on any NEAR blockchain development tasks.
near-api-js Skill
JavaScript/TypeScript library for NEAR blockchain interaction. Works in browser and Node.js.
Quick Start
import { Account, JsonRpcProvider, KeyPairString } from "near-api-js";
import { NEAR } from "near-api-js/tokens";
// Connect to testnet
const provider = new JsonRpcProvider({ url: "https://test.rpc.fastnear.com" });
// Create account with signer
const account = new Account(
"my-account.testnet",
provider,
"ed25519:..." as KeyPairString,
);
// View call (read-only, via provider)
const data = await provider.callFunction({
contractId: "guestbook.near-examples.testnet",
method: "get_messages",
args: {},
});
// Change call (requires account)
await account.callFunction({
contractId: "guestbook.near-examples.testnet",
methodName: "add_message",
args: { text: "Hello!" },
gas: teraToGas("30"),
deposit: nearToYocto("0.1"),
});
Import Cheatsheet
// Core
import { Account, JsonRpcProvider, FailoverRpcProvider } from "near-api-js";
import { KeyPair, PublicKey, KeyType, KeyPairString } from "near-api-js";
// Signers
import { KeyPairSigner, MultiKeySigner, Signer } from "near-api-js";
// Units
import { nearToYocto, yoctoToNear, teraToGas, gigaToGas } from "near-api-js";
// Tokens
import { NEAR, FungibleToken } from "near-api-js/tokens";
import { USDC, wNEAR } from "near-api-js/tokens/mainnet";
import { USDT } from "near-api-js/tokens/testnet";
// Seed phrases
import { generateSeedPhrase, parseSeedPhrase } from "near-api-js/seed-phrase";
// Transactions
import { createTransaction, signTransaction, actions } from "near-api-js";
// Contract with ABI
import { Contract } from "near-api-js";
// Transform key into implicit account ID
import { keyToImplicitAddress } from "near-api-js";
// NEP-413 signing & verification
import { verifyMessage, signMessage } from "near-api-js/nep413";
