MCP, MCP server
Cf Browser
Use Cloudflare Browser Run (formerly Browser Rendering) from Python or Claude Code.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_ENV_READ
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
setup.sh, line 718
pathlib.Path(temporary_name).unlink(missing_ok=True) - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
setup.sh, line 82
for command_name in node npm curl openssl; do - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
mcp-server/src/cf_browser_mcp/server.py, line 95
api_token = os.environ.get("CF_API_TOKEN")
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Concern
can delete files.
PERMISSION_DELETE_FILES
setup.sh, line 718
pathlib.Path(temporary_name).unlink(missing_ok=True)
mcp-server/src/cf_browser_mcp/server.py, line 224
shutil.rmtree(directory, ignore_errors=True)
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
setup.sh, line 82
for command_name in node npm curl openssl; do
setup.sh, line 560
curl --disable -sS -o "$SMOKE_BODY" -w '%{http_code}' "${WORKER_URL}/health" \
setup.sh, line 592
curl --disable --config "$SMOKE_CURL_CONFIG" -sS -o "$SMOKE_BODY" -w '%{http_code}' \
Show more
scripts/test_setup.sh, line 313
for command_name in node npm npx curl openssl python3 claude; do
worker/src/lib/cf-api.ts, line 111
const res = await fetch(`${this.baseUrl}${endpoint}`, {
worker/src/lib/validate-url.ts, line 149
const response = await fetch(`${DNS_ENDPOINT}?${params.toString()}`, {
Secrets
Note
reads an environment variable.
SECRETS_ENV_READ
mcp-server/src/cf_browser_mcp/server.py, line 95
api_token = os.environ.get("CF_API_TOKEN")
mcp-server/src/cf_browser_mcp/server.py, line 97
worker_key = os.environ.get("CF_BROWSER_API_KEY")
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 9d75d5f20362. can delete files. can reach a host that is not written as a fixed address. reads an environment variable.
Date and source
Date checked:
github.com
Commit graded: 9d75d5f20362ad752befe14ea8c6392c21ec79ba
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