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Summary

Authentication and authorization for the Skip Go API are managed via API keys. This document covers:
  1. Why you should use an API key
  2. How to get your key set up
  3. How to use the key in your requests
API Keys have replaced client_idHistorically, we used the client_id passed as a request parameter to identify and authenticate integrators. This system has been fully deprecated. If you’re currently using client_id, you should transition to using an API key.(We’re making this transition because client_id didn’t abide by best practices for security, and we could only attach limited functionality to it, since it was passed in the request body instead of a header.)

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Benefits of using an API key

Technically, you can access most of the basic functionality of the Skip Go API without an API key. But there are numerous benefits to authenticating yourself with a key:
  • No rate limit: Integrators that do not pass a valid API key in their requests will be subject to a restrictive global rate limit, shared with all other unauthenticated users.
  • Improved fee revenue share pricing: Unauthenticated integrators will be subject to a 25% revenue share on their fee revenue by default. Authenticated integrators who use API keys will be subject to a cheaper 20% revenue share by default.
  • Access to privileged features: Integrators who authenticate with an API key will receive access to premium features that we cannot offer to the general public (e.g. Gas estimation APIs, universal balance query APIs, etc…)
  • Metrics on your volume and revenue: Authenticated integrators will receive access to monthly statistics regarding their total swap and transfer volume and the amount of fee revenue they’ve earned. They will also receive annual transaction data for taxes.

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How to get an API Key

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1. Request an API Key

Open a support ticket on our Discord and tell our customer support that you’d like an API key. Please provide the following information in your request to help us get to know your project:
  1. Your name (or pseudo-anon name) and contact info (ideally Telegram, but possibly Email, Signal, etc…)
  2. Your project name
  3. A brief, 1-2 sentence description of your project
The customer support team member at Skip will establish an official channel of communication between Skip and your project (e.g. an email thread or a telegram group etc…).

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2. Store the API Key Securely

You should store the API key immediately when you create it. We do not store your raw API key in our server for security reasons, so we will not be able to access it for you if you lose it. It is important to keep your API key private. Anyone with your API key can make requests to the Skip Go API as you, getting access to your rate limit, privileged features, and affecting your revenue and volume statistics.

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How to use an API key

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Via REST API

You should pass your API key in every call to the Skip Go API using the authorization HTTP header. For example: 
curl -X 'POST' \
  'https://api.skip.build/v2/fungible/route' \
  -H 'accept: application/json' \
  -H 'authorization: <YOUR API KEY>' \
  -H 'Content-Type: application/json' \
  -d '{
  "amount_in": "1000000",
  "source_asset_denom": "uusdc",
  "source_asset_chain_id": "axelar-dojo-1",
  "dest_asset_denom": "uatom",
  "dest_asset_chain_id": "cosmoshub-4",
  "cumulative_affiliate_fee_bps": "0",
  "allow_multi_tx": true
}'

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Via @skip-go/client

For users of the @skip-go/client TypeScript package (v1.0.0+), you can configure your API key using either setApiOptions or setClientOptions at initialization. The library will automatically include it in the authorization header of all requests. For example: 
import { setApiOptions, setClientOptions } from "@skip-go/client";

// Option 1: For basic API calls
setApiOptions({
	apiKey: <YOUR API KEY>,
});

// Option 2: For executeRoute functionality
setClientOptions({
	apiKey: <YOUR API KEY>,
	// ... other options like endpointOptions, aminoTypes, etc.
});
Note: The SkipClient class has been removed in v1.0.0. Instead, you import and use individual functions directly after setting the API options. Also note that apiURL has been renamed to apiUrl to follow camelCase conventions.

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Setup a Proxy to Receive Skip Go API Requests and Add the API Key

To keep your API key secure and private, we recommend that you proxy the API requests from the frontend to your own backend—where you can add your API key in the header before forwarding the request to the Skip Go API. The snippets below show you how to use Next.js/Vercel for this kind of proxying. It only takes a moment to set up. 
// This handler runs server-side in Vercel and receive requests from the frontend
// sent to APP_URL/api/skip

import type { NextApiRequest } from 'next';
import { PageConfig } from 'next';

import { API_URL } from '@/constants/api';

export const config: PageConfig = {
  api: {
    externalResolver: true,
    bodyParser: false,
  },
  runtime: 'edge',
};

export default async function handler(req: NextApiRequest) {
  try {
    const splitter = '/api/skip/';

    const [...args] = req.url!.split(splitter).pop()!.split('/');
    const uri = [API_URL, ...args].join('/');
    const headers = new Headers();
    if (process.env.SKIP_API_KEY) {
      headers.set('authorization', process.env.SKIP_API_KEY);
    }
    return fetch(uri, {
      body: req.body,
      method: req.method,
      headers,
    });
  } catch (error) {
    const data = JSON.stringify({ error });
    return new Response(data, { status: 500 });
  }
}

// This config maps the requests to APP_URL/api/skip to the handler we just defined
	rewrites: async () => [
    {
      source: "/api/skip/(.*)",
      destination: "/api/skip/handler",
    },
  ],
// other config...

// This configures your client to make requests to your proxy service instead of
// the standard Skip Go API backend directly
import { setApiOptions, setClientOptions } from '@skip-go/client';

const appUrl =
  process.env.NEXT_PUBLIC_VERCEL_ENV === 'preview' ||
  process.env.NEXT_PUBLIC_VERCEL_ENV === 'staging'
    ? typeof window !== 'undefined'
      ? `https://${window.location.hostname}`
      : process.env.NEXT_PUBLIC_VERCEL_URL
    : 'https://<YOUR APP URL>';

// Option 1: For basic API calls
setApiOptions({
  // you don't need to pass apiKey since you already have it in your proxy handler
  apiUrl: `${appUrl}/api/skip`,
});

// Option 2: For executeRoute functionality
setClientOptions({
  // you don't need to pass apiKey since you already have it in your proxy handler
  apiUrl: `${appUrl}/api/skip`,
  // ... other options if needed
});

// These are environment variables you set in Vercel
// to store your API key securely in the backend
SKIP_API_KEY=<YOUR API KEY>

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How to Request Volume & Revenue Statistics

Just return to your official communication channel with Skip (probably a Telegram channel) and request the data. We can share monthly reports. Eventually, we will create a customer portal with dashboards, so you’ll have access to all the data you need in a self-service manner.
Have questions or feedback? Help us get better!Join our Discord and select the “Skip Go Developer” role to share your questions and feedback.