# Near API Js

Guide for developing with near-api-js v7 - the JavaScript/TypeScript library for NEAR...

- Repository: https://github.com/internet-court/internet-court-skill (7050 stars)
- Category: Engineering
- License: see repository
- Last updated: 2026-10-26
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add internet-court/internet-court-skill --skill near-api-js -g -a claude-code -y`
Codex: `npx skills add internet-court/internet-court-skill --skill near-api-js -g -a codex -y`
Cursor: `npx skills add internet-court/internet-court-skill --skill near-api-js -g -a cursor -y`
Gemini CLI: `npx skills add internet-court/internet-court-skill --skill near-api-js -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add internet-court/internet-court-skill`

## Description

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.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# near-api-js Skill

JavaScript/TypeScript library for NEAR blockchain interaction. Works in browser and Node.js.

## Quick Start

```typescript
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

```typescript
// 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";

The rest: https://github.com/internet-court/internet-court-skill/blob/HEAD/vendored/near/near-api-js/SKILL.md