MCP, MCP server
Fable Mode
Evidence-gated workflow for risky coding tasks.
Compatibility: Not stated.
Grade C
One Medium finding. Read the findings before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit b1d6d12ba6f4, unchanged since the check below.
NETWORK_HOST_FROM_INPUT
Why this grade
- NETWORK_HOST_FROM_INPUT Medium
A file takes a URL or endpoint as input and has no fixed host list.
fable_engine/adjudicator.py, line 319
with urllib.request.urlopen(request, timeout=timeout) as resp:
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.
If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.
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
fable_compressor.py, line 78
shutil.rmtree(self.test_dir, ignore_errors=True)
run_tests.py, line 34
result = subprocess.run(cmd_args)
fable_engine/cas.py, line 363
os.remove(tmp_file_path)
Show more
fable_engine/test_server.py, line 706
self.proc = subprocess.Popen(
fable_engine/test_server.py, line 870
shutil.rmtree(self.test_dir, ignore_errors=True)
fable_engine/test_server.py, line 1339
shutil.rmtree(root, ignore_errors=True)
fable_engine/test_server.py, line 1363
completed = subprocess.run([sys.executable, str(Path(__file__).resolve().parent / "server.py")],
fable_engine/test_server.py, line 1372
shutil.rmtree(root, ignore_errors=True)
fable_engine/updater.py, line 106
res_local = subprocess.run(
fable_engine/updater.py, line 128
res_remote = subprocess.run(
fable_engine/updater.py, line 457
subprocess.run(
fable_engine/updater.py, line 471
pull_res = subprocess.run(
fable_engine/updater.py, line 483
fetch_res = subprocess.run(
fable_mode/adapters.py, line 245
shutil.rmtree(probe_home, ignore_errors=True)
fable_mode/launcher.py, line 107
shutil.rmtree(probe_home, ignore_errors=True)
fable_mode/safety.py, line 102
shutil.rmtree(p)
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Serious
accepts a host from input, with no fixed list in this file.
NETWORK_HOST_FROM_INPUT
fable_engine/adjudicator.py, line 319
with urllib.request.urlopen(request, timeout=timeout) as resp:
fable_engine/scrapers/arxiv.py, line 18
def fetch(self, target: str, timeout: int = 15, max_content_length: int = 10000) -> ResearchResult:
fable_engine/scrapers/arxiv.py, line 115
return ArxivScraper().fetch(target, timeout=timeout)
Show more
fable_engine/scrapers/base.py, line 130
self.sock = socket.create_connection((self.resolved_ip, self.port), self.timeout)
fable_engine/scrapers/base.py, line 141
sock = socket.create_connection((self.resolved_ip, self.port), self.timeout)
fable_engine/scrapers/base.py, line 411
def fetch(self, target: str, timeout: int = 15, max_content_length: int = 12000) -> ResearchResult:
fable_engine/scrapers/github.py, line 18
def fetch(self, target: str, timeout: int = 15, max_content_length: int = 8000) -> ResearchResult:
fable_engine/scrapers/github.py, line 129
return GitHubScraper().fetch(target, timeout=timeout)
fable_engine/scrapers/reddit.py, line 17
def fetch(self, target: str, timeout: int = 15, max_content_length: int = 10000) -> ResearchResult:
fable_engine/scrapers/reddit.py, line 154
return RedditScraper().fetch(target, timeout=timeout)
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
fable_v2/execution_broker.py, line 768
digest = os.environ.get("FABLE_BROKER_WRITE_TOKEN_DIGEST", "").strip()
fable_v2/execution_broker.py, line 769
digest_file = os.environ.get("FABLE_BROKER_WRITE_TOKEN_DIGEST_FILE", "").strip()
packaging/fable_mode.spec, line 7
# Only reviewed runtime resources are bundled. Sessions, caches, media, .env,
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 b1d6d12ba6f4. can delete files. accepts a host from input, with no fixed list in this file. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: b1d6d12ba6f4e62adcdf1d1358ee491197de89ca
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.