Parallel Browser MCP
NPM · PARALLEL-BROWSER-MCP
MCP server for parallel browser automation across multiple providers.
Available components
Last scanned (6 hours ago)
Scores higher than 65% of npm servers
Category Browser Automation
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security80
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 53 of 137 dependencies flagged as unhealthy (2 deprecated). View diagnostics → Partial
Provenance & Transparency84
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to etairl/parallel-browser-mcp). View diagnostics → Pass
- License check failed: no license is declared. See how to fix → Fail
- Actively maintained (last published 157 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability60
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 1059 tokens (~40/item across 26 items; 26 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management87
- Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage72
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 16% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 26 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 27 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 4 Nov 26 −2
- Stability: pass → 0.83 functional
- 29 Oct 26 0
- Stability: 0.97 → pass security
- 28 Oct 26 0
- Stability: pass → 0.97 functional
- 24 Oct 26 −6
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: pass → fail ▼ security
- 16 Oct 26 +1
- Stability: 0.97 → pass security
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/parallel-browser-mcp@0.1.14
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | etairl/parallel-browser-mcp |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/etairl/parallel-browser-mcp/.github/workflows/release.yml@refs/tags/v0.1.14 |
| Rekor log index | 1679640570 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:c97a3bdc91af9622b40205dc7b18043bda20a55d37519ad3bc29ac4f5917e2f896963f0cb8011b94af283acb27a9a7a741c6a835a43217ce24a07ab74 |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 1 finding
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-mrhx-c7xc-m3w5 | CVE-2023-54404 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 137 packages
| Packages resolved | 137 |
|---|---|
| Deprecated | 2 |
| Stale | 37 |
| No linked repository | 14 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
browser_click Browser Click ~36
Click an element by selector.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
| timeout | integer | – | – |
No output schema declared.
No examples provided.
browser_dom_query Browser DOM Query ~35
Query element presence, count, and state without waiting.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_drag Browser Drag ~46
Drag from one element to another.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
| sourceSelector | string | yes | – |
| targetSelector | string | yes | – |
| timeout | integer | – | – |
No output schema declared.
No examples provided.
browser_evaluate Browser Evaluate ~48
Run JavaScript in the page context.
| Name | Type | Req | Description |
|---|---|---|---|
| script | string | yes | – |
| selector | string | – | Matched element passed as first arg to script. |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_fill Browser Fill ~43
Fill a field with text.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
| timeout | integer | – | – |
| value | string | yes | – |
No output schema declared.
No examples provided.
browser_fill_form Browser Fill Form ~29
Fill multiple form fields.
| Name | Type | Req | Description |
|---|---|---|---|
| fields | array | yes | – |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_generate_locator Browser Generate Locator ~31
Generate locator suggestions for an element.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_get_page_structure Browser Get Page Structure ~72
Return a readable page structure summary.
| Name | Type | Req | Description |
|---|---|---|---|
| maxChildren | integer | – | Max children per node (default 20). |
| maxDepth | integer | – | Max tree depth (default 4). |
| selector | string | – | Scope to an element; omit for document body. |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_go_back Browser Go Back ~23
Go back in browser history.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_hover Browser Hover ~37
Hover over an element by selector.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
| timeout | integer | – | – |
No output schema declared.
No examples provided.
browser_keyboard_press Browser Keyboard Press ~50
Press a keyboard key or key chord.
| Name | Type | Req | Description |
|---|---|---|---|
| key | string | yes | Playwright key name, e.g. "Enter", "ArrowDown", "Control+A". |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_keyboard_type Browser Keyboard Type ~48
Type text into the active page.
| Name | Type | Req | Description |
|---|---|---|---|
| delay | integer | – | Ms between keystrokes. Omit for instant. |
| sessionId | integer | yes | – |
| text | string | yes | – |
No output schema declared.
No examples provided.
browser_mouse_click_xy Browser Mouse Click XY ~37
Click at viewport coordinates.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
| x | number | yes | – |
| y | number | yes | – |
No output schema declared.
No examples provided.
browser_mouse_drag Browser Mouse Drag ~58
Drag the mouse from one point to another.
| Name | Type | Req | Description |
|---|---|---|---|
| endX | number | yes | – |
| endY | number | yes | – |
| sessionId | integer | yes | – |
| startX | number | yes | – |
| startY | number | yes | – |
No output schema declared.
No examples provided.
browser_mouse_move Browser Mouse Move ~38
Move the mouse to viewport coordinates.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
| x | number | yes | – |
| y | number | yes | – |
No output schema declared.
No examples provided.
browser_navigate Browser Navigate ~32
Navigate the session page to a URL.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
| url | string | yes | – |
No output schema declared.
No examples provided.
browser_screenshot Browser Screenshot ~43
Capture a screenshot of the current page.
| Name | Type | Req | Description |
|---|---|---|---|
| fullPage | boolean | – | Capture full scrollable page, not just the viewport. |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_select_option Browser Select Option ~55
Select options in a select element.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
| timeout | integer | – | – |
| values | array | yes | Option values to select; pass multiple for multi-select. |
No output schema declared.
No examples provided.
browser_snapshot Browser Snapshot ~69
Return a structured page snapshot.
| Name | Type | Req | Description |
|---|---|---|---|
| maxChildren | integer | – | Max children per node (default 20). |
| maxDepth | integer | – | Max tree depth (default 4). |
| selector | string | – | Scope to an element; omit for document body. |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_upload_file Browser Upload File ~39
Upload files to a file input.
| Name | Type | Req | Description |
|---|---|---|---|
| filePaths | array | yes | – |
| selector | string | yes | – |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
browser_wait_for_selector Browser Wait For Selector ~48
Wait for a selector to reach a state.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | – |
| sessionId | integer | yes | – |
| state | string | – | – |
| timeout | integer | – | – |
No output schema declared.
No examples provided.
browser_wait_for_timeout Browser Wait For Timeout ~32
Wait a fixed number of milliseconds.
| Name | Type | Req | Description |
|---|---|---|---|
| milliseconds | integer | yes | – |
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
close_all_sessions Close All Sessions ~15
Close all active browser sessions.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
close_session Close Session ~25
Close a browser session by numeric session ID.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | integer | yes | – |
No output schema declared.
No examples provided.
get_sessions Get Sessions ~14
List all active browser sessions.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
start_session Start Session ~32
Start a browser session using the configured provider.
| Name | Type | Req | Description |
|---|---|---|---|
| provider | string | – | – |
| sessionName | string | – | – |
No output schema declared.
No examples provided.
How do I install the Parallel Browser MCP server?
Parallel Browser MCP runs locally as an npm package, launched with npx -y parallel-browser-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · parallel-browser-mcp
claude mcp add etairl-parallel-browser-mcp -- npx -y parallel-browser-mcp
What is the Parallel Browser MCP server?
Parallel Browser MCP is listed in the public MCP registry as io.github.etairl/parallel-browser-mcp. MCP server for parallel browser automation across multiple providers. This page covers its npm package (parallel-browser-mcp).
Is the Parallel Browser MCP server safe to use?
Parallel Browser MCP scores 80 out of 100 on VerifyMCP. We recorded 1 known advisory against it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Parallel Browser MCP server expose?
Parallel Browser MCP exposes 26 tools: start_session, close_session, close_all_sessions, get_sessions, browser_navigate, and 21 more. Their descriptions and schemas cost roughly 1,035 tokens of context every time the server is loaded.
Is the Parallel Browser MCP server still maintained?
Parallel Browser MCP is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.