MCP, MCP server
langhuan
langhuan, an MCP server listed in the PlugVet directory.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_SHELL_UNDECLARED
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
cmd/langhuan-eval/server.go, line 64
build := exec.Command("go", "build", "-o", binary, "./cmd/langhuan")
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
requests shell access. No manifest field names shell or command execution.
PERMISSION_SHELL_UNDECLARED
cmd/langhuan-eval/server.go, line 64
build := exec.Command("go", "build", "-o", binary, "./cmd/langhuan")
cmd/langhuan-eval/server.go, line 75
command := exec.Command(binary, "-config", configPath)
cmd/langhuan-eval/server.go, line 155
output, err := exec.Command("git", "-C", root, "rev-parse", "HEAD").Output()
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
internal/adapters/source/web/fetch_auto_test.go, line 41
func (s *engineSpy) fetch(_ context.Context, request FetchRequest) (fetchedPage, error) {
internal/adapters/source/web/robots.go, line 121
fetched, err := c.fetch(ctx, origin)
internal/adapters/source/web/robots.go, line 136
func (c *RobotsChecker) fetch(ctx context.Context, origin string) (robotsEntry, error) {
Show more
web/e2e/docker-compose.e2e.yaml, line 48
- fetch('http://127.0.0.1:47701/healthz').then((r) => { if (!r.ok) throw new Error(String(r.status)) })
web/e2e/docker-compose.e2e.yaml, line 69
- fetch('http://127.0.0.1:47702/healthz').then((r) => { if (!r.ok) throw new Error(String(r.status)) })
web/e2e/docker-compose.firecrawl.yaml, line 116
- fetch('http://127.0.0.1:3002/test-health').then((r) => { if (!r.ok) throw new Error(String(r.status)) })
web/e2e/docker-compose.obscura.yaml, line 55
- fetch('http://127.0.0.1:47801/healthz').then((r) => { if (!r.ok) throw new Error(String(r.status)) })
web/e2e/global-setup.ts, line 30
const response = await fetch(`${url}/healthz`, {
web/src/assets/brand-assets.test.ts, line 5
const response = await fetch(path)
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
internal/adapters/storage/s3/integration_test.go, line 38
accessKey := os.Getenv("LANGHUAN_TEST_S3_ACCESS_KEY")
internal/adapters/storage/s3/integration_test.go, line 42
secretKey := os.Getenv("LANGHUAN_TEST_S3_SECRET_KEY")
.gitignore, line 9
*.local.yaml
Show more
.gitignore, line 10
.env
docs/superpowers/plans/2026-06-17-v0.1.0-foundation-implementation.md, line 161
*.local.yaml
docs/superpowers/plans/2026-06-17-v0.1.0-foundation-implementation.md, line 162
.env
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. the file cap was reached before every file was read.
OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
cmd/langhuan-eval/testdata/micro/track-b-corpus.jsonl, line 1
{"docid": "1005451", "title": "基督教教派列表", "passages": ["“基督教教派”（或“自认为基督徒的教派”）按历史或教义相关次序排列。", "基督教主要分成三大宗派，即天主教會、正教會、新教會。新教會因为教义的些微差异，又分为不同教派，如路德宗、长老会、浸信会等，而小教派则可能仅有几个教会。
internal/application/service/knowledge_base_jobs.go, line 1
package service
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 1638938fc962. requests shell access. No manifest field names shell or command execution. 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. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: 1638938fc962563b67d863ba2b2fe023f21e3965
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.