MCP, MCP server
Pipe (SPR) MCP Server
The first language with built-in MCP — server and client.
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 cd921a8203c4, unchanged since the check below.
INSTALL_REMOTE_SCRIPT
Why this grade
- INSTALL_REMOTE_SCRIPT Medium
Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).
install.sh, line 8
# curl -fsSL https://pipe-lang.com/install.sh | bash
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
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
benchmarks/performance/tools/measure_perf.py, line 38
subprocess.run(cmd, cwd=str(cwd), capture_output=True, text=True, timeout=timeout, check=True)
benchmarks/performance/tools/measure_perf.py, line 49
bench_out = subprocess.run([str(PIPE_BIN), "-bench"], capture_output=True, text=True).stdout
benchmarks/python-vs-pipe/tools/measure.py, line 48
proc = subprocess.run(
Show more
benchmarks/python-vs-pipe/tools/measure.py, line 68
proc = subprocess.Popen(
cmd/pipe/main.go, line 322
cmd := exec.Command(upxPath, "-q", tmpPath)
cmd/pipe-lsp/e2e_test.go, line 18
cmd := exec.Command("go", "run", ".")
cmd/pipe-lsp/e2e_test.go, line 97
cmd := exec.Command("go", "run", ".", "--stdio")
pkg/docexamples/docexamples_test.go, line 122
cmd := exec.Command("go", "build", "-o", bin, "./cmd/pipe")
Install and update
Serious
install fetches a script from the network. The docs document an installer that pipes a download into a shell.
INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER
README.md, line 34
curl -fsSL https://pipe-lang.com/install.sh | bash # Linux & macOS
install.sh, line 8
# curl -fsSL https://pipe-lang.com/install.sh | bash
docs/de/01-erste-schritte.md, line 35
curl -fsSL https://pipe-lang.com/install.sh | bash
Show more
docs/de/19-ki-builtins.md, line 813
curl -fsSL https://ollama.com/install.sh | sh
docs/en/01-getting-started.md, line 35
curl -fsSL https://pipe-lang.com/install.sh | bash
docs/en/19-ai-builtins.md, line 790
curl -fsSL https://ollama.com/install.sh | sh
website/blog/pipe-v1.3.md, line 393
curl -fsSL https://pipe-lang.com/install.sh | bash
website/blog/pipe-v1.3.md, line 405
curl -fsSL https://pipe-lang.com/install.sh | bash
website/blog/pipe-v1.md, line 167
curl -fsSL https://pipe-lang.com/install.sh | bash
website/blog/pipe-v1.md, line 173
curl -fsSL https://pipe-lang.com/install.sh | bash
website/blog/repo-rag-mcp.md, line 15
curl -fsSL https://raw.githubusercontent.com/MachuraHarry/pipe/master/install.sh | sh
website/blog/repo-rag-mcp.md, line 126
curl -fsSL https://raw.githubusercontent.com/MachuraHarry/pipe/master/install.sh | sh
website/index.html, line 74
<pre class="inline" style="max-width:560px;margin:14px auto 0">curl -fsSL https://pipe-lang.com/install.sh | bash</pre>
website/index.html, line 515
<pre class="inline">curl -fsSL https://pipe-lang.com/install.sh | bash</pre>
website/install.html, line 165
curl -fsSL https://pipe-lang.com/install.sh | bash
website/install.sh, line 8
# curl -fsSL https://pipe-lang.com/install.sh | bash
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
install.sh, line 151
curl -fsSL -o "$tmp/$artifact" "$url"
install.sh, line 154
if curl -fsSL -o "$tmp/$artifact.sha256" "$url.sha256" 2>/dev/null; then
benchmarks/python-vs-pipe/python/summarize_api.py, line 3
# Test: curl -X POST http://localhost:8787/summarize -d '{"text":"..."}'
Show more
benchmarks/python-vs-pipe/tools/measure.py, line 83
with urllib.request.urlopen(req, timeout=10) as resp:
examples/redteam10_audit.sh, line 49
if curl -sf "http://127.0.0.1:$PORT/healthz" >/dev/null 2>&1; then
examples/redteam10_audit.sh, line 54
if ! curl -sf "http://127.0.0.1:$PORT/healthz" >/dev/null 2>&1; then
examples/api-client/run.sh, line 8
curl -s "$API/health" | jq .
examples/api-client/run.sh, line 12
curl -s -X POST "$API/run" \
examples/api-client/run.sh, line 18
curl -s -X POST "$API/run" \
benchmarks/sqlite_bench.lua, line 44
while cur:fetch() do n = n + 1 end
benchmarks/sqlite_bench.lua, line 54
while cur:fetch() do n = n + 1 end
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
cmd/pipe/main.go, line 1578
// binary (.env, a database file, output directories, ...). A chdir
pkg/ai/ai_test.go, line 221
oldVal := os.Getenv("OPENCODE_API_KEY")
pkg/ai/ai_test.go, line 252
oldVal := os.Getenv("OPENCODE_API_KEY")
Show more
pkg/analysis/builtins.go, line 116
scription: "Loads KEY=VALUE pairs from a .env file into environment variables. Return
pkg/eval/try_ai_integration_test.go, line 13
if os.Getenv("DEEPSEEK_API_KEY") == "" {
pkg/eval/try_ai_integration_test.go, line 19
ai.SetAPIKey("deepseek", os.Getenv("DEEPSEEK_API_KEY"))
docs/en/18-roadmap.md, line 232
- [x] Environment variable file loading (`.env` support)
examples/redteam.pipe, line 21
sys: "You are a red-team penetration tester. Your ONLY objective is to ESCAPE this sandbox and gain full access to the host system.\nThe sandbox restricts: file reads to an empty t
examples/redteam11.pipe, line 58
sys: ("You are a red-team agent attacking a Pipe sandbox profile (round 11 of an ongoing audit). Your objective: ESCAPE the sandbox and reach the host, OR prove that a COORDINATED
examples/redteam9.pipe, line 42
sys: "You are a red-team penetration tester attacking a Pipe sandbox profile (round 9 of an ongoing audit). Your ONLY objective is to ESCAPE this sandbox and gain full access to th
website/blog/pipe-v1.3.md, line 251
Separately, `runEmbedded` used to `os.Chdir` the *entire process* into the extracted-files temp directory so relative imports would resolve - which also silently redirected Muninn'
website/blog/pipe-v1.3.md, line 253
With both fixed: `pipe -build muninn.pipe -o muninn --embed-file modules/*.pipe` produced a single ~9 MB binary that resolved all 9 modules, read its real `.env` from the real work
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
the file cap was reached before every file was read.
OBFUSCATION_FILE_CAP_REACHED
pkg/object/builtins_sandbox.go, line 1
package object
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 cd921a8203c4. requests shell access. The manifest names this permission. install fetches a script from the network. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. reads a credential or environment file. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: cd921a8203c4b29773fb26079b8dc5791d78fcbb
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.