# com.scriptmasterlabs/agent-browser

> Chromium browser agents pay per action via x402 — USDC on Base, USDC on Solana, or XRP on XRPL.

- name: com.scriptmasterlabs/agent-browser
- version: 2.0.3
- connection class: R0 (autonomous)
- trust: 93/100
- quality: 80/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.scriptmasterlabs%2Fagent-browser
- tools: https://api.protogrid.dev/v1/servers/com.scriptmasterlabs%2Fagent-browser/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "agent-browser": {
      "type": "http",
      "url": "https://agent-browser-r7d2.onrender.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 75
- drivers: +repository +dns-namespace +reachable +uptime-100% +updated-3d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 80/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 6 of 6 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: browser_navigate (idempotentHint); browser_extract (idempotentHint); browser_snapshot (idempotentHint); …
- pass `tools.token_cost`: about 1,315 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 11 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 6, about 1,315 tokens to load them all
- tool set hash: 719590bb21dc43fb13cccc4ebdcfeef8
- tools last changed: 2026-11-03T02:07:05.827Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.scriptmasterlabs/agent-browser.svg)](https://protogrid.dev/servers/com.scriptmasterlabs/agent-browser)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-11-03 `browser_screenshot` changed (description)
  - before: 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. Paid: $0.02 USDC per call via x402 on Base.
  - after: 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. Paid: $0.02 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- 2026-11-03 `browser_act` changed (description)
  - before: 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). Paid: $0.01 USDC per call via x402 on Base.
  - after: 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). Paid: $0.01 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- 2026-11-03 `browser_snapshot` changed (description)
  - before: 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. Paid: $0.005 USDC per call via x402 on Base.
  - after: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- 2026-11-03 `browser_extract` changed (description)
  - before: 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. Paid: $0.005 USDC per call via x402 on Base.
  - after: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- 2026-11-03 `browser_navigate` changed (description)
  - before: 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. Paid: $0.005 USDC per call via x402 on Base.
  - after: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- 2026-11-01 `browser_close` changed (description)
  - before: 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.
  - after: 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. Free.
- 2026-11-01 `browser_screenshot` changed (description)
  - before: 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.
  - after: 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. Paid: $0.02 USDC per call via x402 on Base.
- 2026-11-01 `browser_act` changed (description)
  - before: 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).
  - after: 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). Paid: $0.01 USDC per call via x402 on Base.
- 2026-11-01 `browser_snapshot` changed (description)
  - before: 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.
  - after: 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. Paid: $0.005 USDC per call via x402 on Base.
- 2026-11-01 `browser_extract` changed (description)
  - before: 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.
  - after: 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. Paid: $0.005 USDC per call via x402 on Base.

Full history: https://api.protogrid.dev/v1/servers/com.scriptmasterlabs%2Fagent-browser/changes

## Remotes

- https://agent-browser-r7d2.onrender.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (6)

- `browser_act`: 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). Paid: $0.01 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- `browser_close`: 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. Free.
- `browser_extract`: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- `browser_navigate`: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- `browser_screenshot`: 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. Paid: $0.02 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).
- `browser_snapshot`: 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. Paid: $0.005 per call via x402 (Base USDC, Solana USDC, or XRPL XRP).