agent-browser
A real Chromium browser agents pay for per action in USDC via x402 — hosted MCP, free local stdio.
¿Debería usar esto?
Calidad y seguridad
Hallazgos (2)
- LOWTool 'browser_screenshot' description lacks action verben browser_screenshot
- LOWTool 'browser_close' suggests web access but openWorldHint=falseen browser_close
Basado en el análisis automatizado de las definiciones de herramientas y el cumplimiento del protocolo.
Costo de contexto
Este es el número aproximado de tokens que se consumen cada vez que las herramientas del servidor se cargan en el contexto de un modelo. Los recuentos más altos reducen la atención disponible para otras tareas.
Instalar
Instalación con un clic
Agrega esto a tu archivo `claude_desktop_config.json`:
{
"mcpServers": {
"agent-browser": {
"url": "https://agent-browser-r7d2.onrender.com/mcp"
}
}
}Puntos de conexión remotos
https://agent-browser-r7d2.onrender.com/mcpstreamable-httpQué puede hacer
Inventario de herramientas
Herramientas (6)
🟢browser_navigate(session_id, url, wait_for)
Use for: loading a web page in a real Chromium browser and reading it. Returns the page title, final URL and a clean text extract (up to 8000 chars). Don't use when: you only need raw HTML or an API response — a plain HTTP fetch is cheaper. Errors are structured: NAV_TIMEOUT, NAV_FAILED, INVALID_URL.
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
},
"url": {
"type": "string",
"description": "Absolute http(s) URL to load."
},
"wait_for": {
"type": "string",
"description": "Optional CSS selector to wait for after load (max 10s)."
}
},
"required": [
"session_id",
"url"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"title": {
"type": "string"
},
"url": {
"type": "string"
},
"text": {
"type": "string"
},
"session_id": {
"type": "string"
}
},
"required": [
"title",
"url",
"text",
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢browser_extract(session_id, selector, attribute)
Use for: pulling repeated elements (prices, titles, links) from the page a session is on, via a CSS selector, or the full page text when no selector is given. Returns one string per matched element. Don't use when: the page has not been loaded yet — call browser_navigate first.
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
},
"selector": {
"type": "string",
"description": "CSS selector to extract. Omit for full page text."
},
"attribute": {
"type": "string",
"description": "Attribute to read instead of text, e.g. href or src."
}
},
"required": [
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"results": {
"type": "array",
"items": {
"type": "string"
}
},
"count": {
"type": "number"
}
},
"required": [
"results",
"count"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢browser_snapshot(session_id)
Use for: understanding page structure cheaply and deterministically — returns the accessibility tree (roles, names, states) as compact YAML instead of pixels or raw HTML. This is the lowest-token way to decide what to click or fill next. Don't use when: you need visual layout or images — use browser_screenshot.
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
}
},
"required": [
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"snapshot": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"snapshot",
"url"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🔴browser_act(session_id, action, selector, value)
Use for: interacting with the page — click, fill, type, select, submit, press. Returns the resulting page title, URL and text so you can verify the action landed. Don't use when: the target element is not on the current page — navigate or snapshot first. This tool can change remote state (it can submit forms).
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
},
"action": {
"type": "string",
"enum": [
"click",
"fill",
"type",
"select",
"submit",
"press"
],
"description": "The interaction to perform on the target element."
},
"selector": {
"type": "string",
"description": "CSS selector of the target element."
},
"value": {
"type": "string",
"description": "Value for fill/type/select, or key name for press (default Enter)."
}
},
"required": [
"session_id",
"action",
"selector"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"success": {
"type": "boolean"
},
"title": {
"type": "string"
},
"url": {
"type": "string"
},
"text": {
"type": "string"
}
},
"required": [
"success",
"title",
"url",
"text"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢browser_screenshot(session_id, full_page)
Use for: visual verification — layout, images, charts, CAPTCHA presence, or evidence of page state. Returns a PNG image (JPEG if the PNG exceeds 2.5MB). Don't use when: you only need the page's content or structure — browser_extract and browser_snapshot are far cheaper in tokens.
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
},
"full_page": {
"type": "boolean",
"description": "Capture the full scrollable page instead of the viewport."
}
},
"required": [
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"bytes": {
"type": "number"
},
"mime_type": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"bytes",
"mime_type",
"url"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🔴browser_close(session_id)
Use for: ending a session and freeing its browser. Sessions also expire automatically after 10 idle minutes. Free on every door — closing is never charged.
Esquema de entrada
{
"type": "object",
"properties": {
"session_id": {
"type": "string",
"minLength": 1,
"description": "Session ID. Reuse the same ID to keep cookies, login state and page position across calls; a new ID starts a fresh browser."
}
},
"required": [
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Esquema de salida
{
"type": "object",
"properties": {
"closed": {
"type": "boolean"
},
"session_id": {
"type": "string"
}
},
"required": [
"closed",
"session_id"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Comunidad
Evidencia