Integrating Jupiter

Jupiter API Integration

Single skill for all Jupiter APIs, optimized for fast routing and deterministic execution.

Base URL: https://api.jup.ag Auth: x-api-key from developers.jup.ag (required for Jupiter REST endpoints)

Use/Do Not Use

Use when:

• The task requires choosing or calling Jupiter endpoints.
• The task involves swap, lending, perps, orders, pricing, portfolio, send, studio, lock, or routing.
• The user needs debugging help for Jupiter API calls.

Do not use when:

• The task is generic Solana setup with no Jupiter API usage.
• The task is UI-only with no API behavior decisions.
• The agent context is not DeFi/crypto (generic triggers like buy, sell, trade assume a DeFi domain).

Triggers: swap, quote, gasless, best route, buy, sell, trade, convert, token exchange, jupiter api, jup.ag, ultra, metis, ultra swap, ultra api, ultra-api.jup.ag, lend, borrow, earn, yield, apy, deposit, liquidation, perps, leverage, long, short, position, futures, margin trading, limit order, trigger, price condition, dca, recurring, scheduled swaps, token metadata, token search, verification, shield, price, valuation, price feed, portfolio, positions, holdings, prediction markets, market odds, event market, invite transfer, send, clawback, create token, studio, claim fee, vesting, distribution lock, unlock schedule, dex integration, rfq integration, routing engine, status page, health check, service health, accumulate, auto-buy

Developer Quickstart

import { Connection, Keypair, VersionedTransaction } from '@solana/web3.js';

const API_KEY = process.env.JUPITER_API_KEY!;  // from developers.jup.ag
if (!API_KEY) throw new Error('Missing JUPITER_API_KEY');
const BASE = 'https://api.jup.ag';
const headers = { 'x-api-key': API_KEY };

async function jupiterFetch<T>(path: string, init?: RequestInit): Promise<T> {
  const res = await fetch(`${BASE}${path}`, {
    ...init,
    headers: { ...headers, ...init?.headers },
  });
  if (res.status === 429) throw { code: 'RATE_LIMITED', retryAfter: Number(res.headers.get('Retry-After')) || 10 };
  if (!res.ok) {
    const raw = await res.text();
    let body: any = { message: raw || `HTTP_${res.status}` };
    try {
      body = raw ? JSON.parse(raw) : body;
    } catch {
      // keep text fallback body
    }
    throw { status: res.status, ...body };
  }
  return res.json();
}

// Sign and send any Jupiter transaction
async function signAndSend(
  txBase64: string,
  wallet: Keypair,
  connection: Connection,
  additionalSigners: Keypair[] = []
): Promise<string> {
  const tx = VersionedTransaction.deserialize(Buffer.from(txBase64, 'base64'));
  tx.sign([wallet, ...additionalSigners]);
  const sig = await connection.sendRawTransaction(tx.serialize(), {
    maxRetries: 0,
    skipPreflight: true,
  });
  return sig;
}

Token Amounts & Decimals

Every Jupiter amount field is in the token's smallest unit (raw integer) — never a human/UI value.

• Common decimals: SOL & wSOL = 9, USDC & USDT = 6. Canonical mints: SOL So11111111111111111111111111111111111111112, USDC EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v.
• Convert human → raw: raw = Math.round(human * 10 ** decimals). Examples: 1 SOL → 1_000_000_000, 100 USDC → 100_000_000. slippageBps is basis points: 0.5% = 50, 1% = 100.
• Read decimals per-mint on-chain with getMint(connection, mintPubkey) from @solana/spl-token — never hardcode (decimals vary by token), and do not call the Price API just to discover decimals.

Intent Router (first step)

API Playbooks

Use each block as a minimal execution contract. Fetch the linked refs for full request/response shapes, TypeScript interfaces, and parameter details.

Swap

• Base URL: https://api.jup.ag/swap/v2
• Triggers: swap, quote, gasless, best route
• Fee: Variable by pair — 0 bps (Jupiter tokens/pegged), 2 bps (SOL-Stable), 5 bps (LST-Stable), 10 bps (most pairs), 50 bps (tokens < 24h). Referral fees: 50-255 bps (Jupiter retains 20%).
• Rate Limit: 50 req/10s base, scales with 24h execute volume (see Rate Limits)
• Endpoints: /order (GET), /execute (POST), /build (GET, Metis-only raw instructions)
• Quote vs. execute: For a read-only quote/price preview, call GET /order and omit `taker` — the response transaction is null and you read outAmount, routePlan[].swapInfo.label, and price-impact fields. Pass taker (then sign + POST /execute) only when you actually intend to swap. There is no separate quote endpoint — /swap/v1/quote is deprecated; use /swap/v2/order for quotes too.
• Routing: 4 routers compete — Metis (metis), JupiterZ (jupiterz), Dflow (dflow), OKX (okx). The router response field returns one of these values. swapType is aggregator (Metis, Dflow, or OKX) or rfq (JupiterZ). Response mode field: "ultra" (all routers, default params) or "manual" (restricted by optional params). /build uses Metis only.
• Gasless: Three paths — automatic (Jupiter-covered), JupiterZ (MM-covered), integrator-payer (payer param, Metis-only routing). Eligibility varies by balance, trade size, and parameters used. See Gasless docs for current thresholds and disqualifying params.
• Gotchas:
• Signed payloads have ~2 min TTL. Transactions are immutable after receipt.
• Split order/execute in code and logging. Re-quote before execution when conditions may have changed.
• Routing impact of optional params: referralAccount + referralFee disable JupiterZ only (Metis/Dflow/OKX remain); payer (integrator gasless) restricts routing to Metis only (disables JupiterZ, Dflow, and OKX); receiver does NOT restrict routing, but must differ from taker (receiver=taker returns 400 "Receiver cannot be same as taker").
• /build transactions cannot use /execute — self-manage via RPC.
• Migrating from an older integration? Use the jupiter-swap-migration skill.