MCP, MCP server
lex
UK legal research skill for Claude Code using the Lex API
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_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
src/lex/core/http.py, line 276
shutil.rmtree(cache_dir) - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
app/src/app/settings/page.tsx, line 51
const response = await fetch(`${apiUrl}/healthcheck`, { - SECRETS_PATH_DOTENV Low
Mentions a .env file.
infrastructure/azure/deploy.sh, line 131
# Load credentials from .env file - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
app/src/app/api/research/chat/route.ts, line 11
apiKey: process.env.AZURE_OPENAI_API_KEY!, - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
uv.lock, line 1
version = 1
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Concern
can delete files.
PERMISSION_DELETE_FILES
src/lex/core/http.py, line 276
shutil.rmtree(cache_dir)
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
app/src/app/settings/page.tsx, line 51
const response = await fetch(`${apiUrl}/healthcheck`, {
app/src/components/caselaw-preview.tsx, line 88
const response = await fetch(`${API_CONFIG.baseUrl}/caselaw/reference/search`, {
app/src/components/caselaw-preview.tsx, line 107
const response = await fetch(`${API_CONFIG.baseUrl}/caselaw/search`, {
Show more
app/src/components/legislation-preview.tsx, line 255
const response = await fetch(`${API_CONFIG.baseUrl}/legislation/section/lookup`, {
app/src/components/legislation-preview.tsx, line 273
const response = await fetch(`${API_CONFIG.baseUrl}/legislation/proxy/${legislationPath}/data.html`)
app/src/components/legislation-preview.tsx, line 286
const response = await fetch(`${API_CONFIG.baseUrl}/caselaw/reference/search`, {
app/src/hooks/use-document-search.ts, line 101
const res = await fetch(`${API_CONFIG.baseUrl}${config.endpoint}`, {
app/src/hooks/use-legislation-prefetch.ts, line 25
const response = await fetch(`${API_CONFIG.baseUrl}/legislation/section/lookup`, {
scripts/create_payload_indexes.py, line 109
"curl http://localhost:6333/collections/<name> "
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
app/src/app/api/research/chat/route.ts, line 11
apiKey: process.env.AZURE_OPENAI_API_KEY!,
app/src/app/api/suggestions/from-history/route.ts, line 8
apiKey: process.env.AZURE_OPENAI_API_KEY!,
infrastructure/azure/deploy.sh, line 131
# Load credentials from .env file
Show more
infrastructure/azure/deploy.sh, line 132
if [ -f ".env" ]; then
infrastructure/azure/deploy.sh, line 133
QDRANT_CLOUD_URL=$(grep "^QDRANT_CLOUD_URL=" .env | cut -d '=' -f2)
infrastructure/azure/deploy.sh, line 134
QDRANT_CLOUD_API_KEY=$(grep "^QDRANT_CLOUD_API_KEY=" .env | cut -d '=' -f2)
infrastructure/azure/deploy.sh, line 135
AZURE_OPENAI_API_KEY=$(grep "^AZURE_OPENAI_API_KEY=" .env | cut -d '=' -f2)
infrastructure/azure/deploy.sh, line 136
AZURE_OPENAI_ENDPOINT=$(grep "^AZURE_OPENAI_ENDPOINT=" .env | cut -d '=' -f2)
infrastructure/azure/deploy.sh, line 137
AZURE_OPENAI_EMBEDDING_MODEL=$(grep "^AZURE_OPENAI_EMBEDDING_MODEL=" .env | cut -d '=' -f2)
infrastructure/azure/deploy.sh, line 138
POSTHOG_KEY=$(grep "^POSTHOG_KEY=" .env | cut -d '=' -f2)
scripts/bulk_search_qdrant.py, line 359
if not os.getenv("AZURE_OPENAI_API_KEY"):
scripts/maintenance/fix_null_years.py, line 152
api_key=os.getenv("AZURE_OPENAI_API_KEY"),
src/backend/core/config.py, line 17
REDIS_PASSWORD = os.getenv("REDIS_PASSWORD")
src/backend/core/config.py, line 23
POSTHOG_KEY = os.getenv("POSTHOG_KEY")
src/lex/settings.py, line 10
QDRANT_API_KEY = os.environ.get("QDRANT_API_KEY", None)
src/lex/settings.py, line 14
QDRANT_CLOUD_API_KEY = os.environ.get("QDRANT_CLOUD_API_KEY")
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read.
OBFUSCATION_FILE_OVER_READ_CAP
uv.lock, line 1
version = 1
app/bun.lock, line 1
{
data/pdf_only_legislation_complete.csv, line 1
pdf_url,legislation_type,identifier
Show more
tests/test_data/ewhc_ch_2017_3397.xml, line 1
<akomaNtoso xmlns="http://docs.oasis-open.org/legaldocml/ns/akn/3.0" xmlns:html="http://www.w3.org/1999/xhtml" xmlns:uk="https://caselaw.nationalarchives.gov.uk/akn">
tests/test_data/legislation_text_target.py, line 1
target_texts = [
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 a31684d5fc71. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: a31684d5fc71d070514c1d2e0f043dcad99f7a74
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