How does Unbrowse work?

Unbrowse is an open-source action layer for AI agents. It learns first-party routes behind websites from real browsing, keeps credentials local, and lets later calls use a direct route when one is available. When a site still needs a browser, the browser remains the fallback.

How much faster is Unbrowse than headless browser automation?

In the Internal APIs Are All You Need benchmark, warmed cached routes averaged a 3.6x mean speedup and 5.4x median speedup over Playwright across 94 live domains. The practical benefit is not magic latency; it is avoiding repeated rendering, DOM parsing, and token-heavy page dumps when a structured route is already known.

The client, CLI, SDK, and local bridge are open and free to install. Metered marketplace work uses account credits; local capture and execution remain available without pretending every upstream cost is free.

What websites does Unbrowse support?

Unbrowse works best on sites whose frontends call structured first-party routes, which is common on modern web applications. Some routes are cached already; misses fall back to browser capture or ordinary browser automation. Blocked or hostile sites are recorded as misses rather than relabelled as successes.

Is Unbrowse secure? Do my credentials leave my machine?

Unbrowse runs entirely locally and your credentials never leave your device. There are no cloud proxies, no man-in-the-middle interception, browser cookies stay on your machine, and authentication credentials are encrypted with AES-256-CBC in a local vault. Only discovered API endpoint patterns (URL templates and schemas, never your data or credentials) are shared with the registry, and only when you opt in via `unbrowse mode`. That makes Unbrowse safe to install on a work machine without changing your existing security posture.

How do I install Unbrowse?

Run npm install -g unbrowse, then unbrowse setup. Setup installs the Unbrowse Agent Skill and browser engine; it does not write MCP host configs. Legacy MCP users can run unbrowse mcp manually as a stdio server.

What is the skill registry?

The skill registry is a shared marketplace of discovered API skills. When one agent discovers how to interact with a website's API, the result is published so every other agent can call those endpoints without re-discovering them. Value compounds because every new capture lowers the cost for the next agent that needs the same data, the way Wikipedia gets more useful with every edit. That is what turns Unbrowse from a per-agent tool into shared infrastructure for the agent web.

GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60
{"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")
<!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })
unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){
<div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD
Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}
POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"
skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0
import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })
X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>
response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit
GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}
unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry
var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss
GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60
{"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")
<!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })
unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){
<div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD
Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}
POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"
skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0
import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })
X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>
response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit
GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}
unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry
var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss
GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60
{"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")
<!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })
unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){
<div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD
Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}
POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"
skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0
import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })
X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>
response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit
GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}
unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry
var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss
GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60
{"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")
<!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })
unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){
<div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD
Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}
POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"
skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0
import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })
X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60     GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>
response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")     {"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit
GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}     <!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}
unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })     Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry
var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){     unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss
GET /api/v3/StaysSearch?query=Tokyo&checkin=2024-03-15&guests=2&currency=USD     <div class="listing" data-id="TKY-882"><span class="price">$89/night</span><span class="rating">4.92★</span>     X-Request-ID: 3f2a8b91  ·  X-RateLimit-Remaining: 998  ·  Cache-Control: public, max-age=60
{"listings":[{"id":"TKY-882","price":89,"rating":4.92,"title":"Shibuya Loft with City View"}     Content-Type: application/json  ·  200 OK  ·  0.4s  ·  1.2KB  ·  cache: hit     response.listings.map(l => `${l.title}: $${l.price}/night — ${l.rating}★`).join("\n")
<!DOCTYPE html><html><head><meta charset="utf-8"><title>TravelBooker</title><link rel="stylesheet"     POST /api/v3/StayCheckout {"listing_id":"TKY-882","dates":{"checkin":"2024-03-15","checkout":"2024-03-22"}}     GET /api/v3/PdpAvailabilityCalendar?id=TKY-882&month=2024-03  →  {"available":true,"price_override":null}
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMzQ1In0     skill: airbnb-stays-api  ·  quality: 91/100  ·  endpoints: 12  ·  indexed: public registry     unbrowse.skill("airbnb-stays-api").call("search", { location: "Tokyo", dates: "Mar 15-22" })
unbrowse.resolve({ url: "airbnb.com", intent: "find Tokyo stays for 2 guests, March 15-22" })     import { unbrowse } from "unbrowse"  // known route first, browser fallback on miss     var _0x3f2a=function(_0x2b1c){return _0x2b1c.split("").reverse()};window.__CF={};(function(){

Free, open source, runs locally·Star on GitHub

The route layer for web agents.

Name: Unbrowse
Author: Unbrowse

Ask it anything below. It tries the site's real first-party routes first, and keeps the browser for the cases where a browser is still required.

Search→Resolve→Execute·real site APIs, no browser window

Runs on your own browser first · run it in ElizaOS, Claude, or Cursor →

94-domain benchmark · 3.6x mean / 5.4x median speedup · direct routes when known; browser fallback when not.

·join discord·read the paper

Member of the NVIDIA Inception Program member

## Skill Install

$ unbrowse setup

Installs the Agent Skill and browser engine. MCP config is manual-only.

unbrowse mcp

○ anonymous install — the cli will prompt for an email on first runsign in to bake your api key into the install →

## already installed?

npm install -g unbrowse@latest&&unbrowse setup

Plugs into the agent stack you already use

Claude CodeClaude DesktopCursorCodexWindsurfOpenClawAny MCP framework

+ Useful contributions earn account credits. Redemption opens later.

## After You Install

Bypass the DOM completely.

Speed

Skip the rendering engine

Headless browsers are expensive when the page is only a route discovery step. Unbrowse reuses known first-party routes and falls back to the browser when the route is missing.

3.6xmean speedup in paper

browser-first→cached route

Tokens

Fewer tokens

A direct route returns structured data instead of forcing the model to reason over a whole rendered page.

Scraping HTML~8,000t

Direct API~200t

Discovery

Auto-discovers APIs

Your agent calls Unbrowse over MCP and the right shadow endpoint comes back — schemas, parameters, sample values, all ready to call.

Zero config needed

Shared skill registry

Security

Integrate with anything. Behind auth.

No cloud proxies, no expensive credits. Unbrowse runs locally, leveraging your actual browser sessions to securely access auth-protected content.

Security Check Passed

Proxy ServerNone

MITMDisabled

Cookies leave deviceFalse

ExecutionLocal Only

## Research

The thinking behind the engine.

The flagship paper: why internal APIs are the machine-native interface for autonomous agents, and how a shared route graph turns repeated browser rediscovery into collective memory.

Read ↗

Internal APIs Are All You Need

The wedge: first-party routes already sit beneath modern websites. Learn them once, reuse them when they are still fresh, and keep the browser as fallback.

read the paper

## The Problem

Three ways to see the same website

0.0s

128,500

$0.386

travelbooker.com

travelbooker

StaysExperiences

AnywhereAny week • Add guests

Tokyo, Japan

★ 4.98

Oct 15 - 22

$89 night

Paris, France

★ 4.92

Nov 2 - 7

$112 night

What Humans See

Beautiful, interactive UI

view-source:travelbooker.com

<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"/><meta name="viewport" content="width=device-width"/><script>var _0x3f2a=function(_0x2b1c){var _0x4e3d=_0x2b1c.split("").reverse().join("");return atob(_0x4e3d)};window.__CF={};(function(){var a="x3f",b=document.createElement("div");b.className="x3f"+a;b.id="_0x"+Math.random().toString(36).substr(2,9);</script><link rel="stylesheet" href="/_next/static/css/a3b2c1d.css"/><style>.x3f{display:flex;flex-direction:column}.x3f>div{padding:0}.x3f .k9m{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.x3f .q7p{position:absolute;top:0;left:0;right:0;bottom:0;z-index:1}.x3f .r2w{font-size:clamp(1.5rem,4vw,3rem);font-weight:800;letter-spacing:-.02em;line-height:1.1}</style></head><body><div id="__next"><div class="x3f"><div class="x3f q7p"><nav class="x3f k9m"><div class="x3f"><a href="/" class="x3f r2w">TravelBooker</a><div class="x3f"><a href="/flights" class="x3f">Flights</a><a href="/hotels" class="x3f">Hotels</a></div></div></nav><main class="x3f"><div class="x3f k9m"><h1 class="x3f r2w">Find your perfect getaway</h1><form class="x3f" action="/search" method="GET"><input class="x3f" name="q" placeholder="Anywhere" value=""/><button type="submit" class="x3f">Search</button></form></div><div class="x3f"><div class="x3f"><div class="x3f"><img src="https://images.unsplash.com/photo-1540959733332-eab4deabeeaf?auto=format&fit=crop&w=400&q=80" alt="Tokyo, Japan" class="x3f"/></div><div class="x3f"><div class="x3f">Tokyo, Japan</div><div class="x3f">★ 4.98</div></div><div class="x3f">2,410 kilometers away</div><div class="x3f">Oct 15 - 22</div><div class="x3f"><span class="x3f">$89</span> night</div></div><div class="x3f"><div class="x3f"><img src="https://images.unsplash.com/photo-1499856871958-5b9627545d1a?auto=format&fit=crop&w=400&q=80" alt="Paris, France" class="x3f"/></div><div class="x3f"><div class="x3f">Paris, France</div><div class="x3f">★ 4.92</div></div><div class="x3f">View of Eiffel Tower</div>

What Agents See Today

Image + 847KB DOM × 1 passes

Time:0.00s

Tokens:0

Cost:$0.0000

agent_session API

unbrowse.search{ query: 'Tokyo' }

Executing...

What Unbrowse Does

1KB JSON × 0 calls

Unbrowse — an action layer for web agents