MCP, MCP server
Aptu Coder
Aptu Coder, an MCP server listed in the PlugVet directory.
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.
NETWORK_NO_FIXED_HOST OBFUSCATION_ENCODED_BLOB PERMISSION_SHELL_DECLARED
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
crates/aptu-coder/src/heredoc_validation.rs, line 304
let cmd = "curl --data - <<EOF\ncontent\nEOF\n"; - OBFUSCATION_ENCODED_BLOB Low
Contains a long base64 shaped string in a file that should be readable.
docs/benchmarks/v10/results/runs/R08-session.jsonl, line 1
{"type":"queue-operation","operation":"enqueue","timestamp":"2026-03-18T13:32:21.273Z","sessionId":"fb60e137-ccba-4ff5-bcb9-9820d96baf9f","content":"<!-- TARGET REPO: django/django - PERMISSION_SHELL_DECLARED Note
Runs shell commands, and the manifest or description says so.
scripts/bench-v17-run.sh, line 294
p = subprocess.run(["aptu-coder"], input="".join(json.dumps(m) + "\n" for m in msgs),
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
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
scripts/bench-v17-run.sh, line 294
p = subprocess.run(["aptu-coder"], input="".join(json.dumps(m) + "\n" for m in msgs),
scripts/bench_v18/oracle.py, line 46
proc = subprocess.run(
scripts/bench_v18/runner.py, line 211
proc: subprocess.Popen | None,
Show more
scripts/bench_v18/runner.py, line 284
proc = subprocess.Popen(
scripts/bench_v19/oracle.py, line 290
proc = subprocess.run(argv, capture_output=True, text=True, check=False)
scripts/bench_v19/oracle.py, line 395
proc = subprocess.run(
scripts/bench_v19/pilot.py, line 288
pi_version = subprocess.run(["pi", "--version"], capture_output=True,
scripts/bench_v19/pilot.py, line 295
"repo-head": subprocess.run(
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
crates/aptu-coder/src/heredoc_validation.rs, line 304
let cmd = "curl --data - <<EOF\ncontent\nEOF\n";
docs/benchmarks/v15/methodology.md, line 37
| T1 | File fetch (full) | gnome/gtk | gtk/gtkwidget.c | N/A | ~350 KB C source; tests baseline file fetch |
docs/benchmarks/v15/methodology.md, line 38
| T1b | File fetch (sliced) | gnome/gtk | gtk/gtkwidget.c (lines 1-50) | N/A | Same network cost as T1; agent sees 50 lines vs ~350 KB; tests token efficiency |
Show more
docs/benchmarks/v3/results/runs/A1.json, line 143
"key_function": "Core::fetch() -> Vec<Meta>, then Core::sort()",
docs/benchmarks/v3/results/runs/A1.json, line 148
"description": "fetch() collects paths and calls Meta::from_path for each, building Vec<Meta>. sort() creates sort function closures from flags.sorters list using sort module. Appl
docs/benchmarks/v3/results/runs/A1.json, line 210
"reason": "Orchestration hub. Imports and instantiates Colors, Icons, GitTheme, Flags, GitCache; calls fetch(), sort(), display(). Coordinates sequence of operations: configure ->
docs/benchmarks/v3/results/runs/A4.json, line 64
"Core::fetch() - collects Meta from path array",
docs/benchmarks/v3/results/runs/A4.json, line 174
"stage": "2. Batch fetch (accumulate)",
Secrets
Pass
No read of a credential file or secret environment variable found.
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Concern
contains an encoded blob in a file that should be readable.
OBFUSCATION_ENCODED_BLOB
docs/benchmarks/v10/results/runs/R08-session.jsonl, line 1
{"type":"queue-operation","operation":"enqueue","timestamp":"2026-03-18T13:32:21.273Z","sessionId":"fb60e137-ccba-4ff5-bcb9-9820d96baf9f","content":"<!-- TARGET REPO: django/django
docs/benchmarks/v10/results/runs/R09-session.jsonl, line 1
{"type":"queue-operation","operation":"enqueue","timestamp":"2026-03-18T13:33:52.071Z","sessionId":"f8c3dc5c-8939-4e63-9118-f0bd3b4b2747","content":"<!-- TARGET REPO: django/django
docs/benchmarks/v10/results/runs/R14-session.jsonl, line 1
{"type":"queue-operation","operation":"enqueue","timestamp":"2026-03-18T13:44:07.159Z","sessionId":"75853cf4-7a5b-4e2c-b155-bd25f813b770","content":"<!-- TARGET REPO: django/django
Show more
docs/benchmarks/v10/results/runs/R21-session.jsonl, line 1
{"type":"queue-operation","operation":"enqueue","timestamp":"2026-03-18T13:52:55.839Z","sessionId":"a5c9043a-a3a3-4541-b3d9-4367b58a4455","content":"<!-- TARGET REPO: django/django
docs/benchmarks/v14/results/scores-A.json, line 1
{
docs/benchmarks/v10/results/runs/R01-session.jsonl, line 5
{"parentUuid":"ad2156ba-6d53-4a8a-a082-2c976bb28420","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_01NtMM3Bxd9ffrP2JQXKgaRq","type":"message","role":"as
docs/benchmarks/v10/results/runs/R01-session.jsonl, line 8
{"parentUuid":"32c897dc-5d27-4b17-974d-8dc0c17465ed","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_01NVDiTsN8DrzkrPGq1YQAfP","type":"message","role":"as
docs/benchmarks/v10/results/runs/R01-session.jsonl, line 15
{"parentUuid":"8c613dd4-f776-4973-bde9-16791ae80a37","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_015cGMMwuAoH9uvyPg1THM6G","type":"message","role":"as
docs/benchmarks/v10/results/runs/R01-session.jsonl, line 18
{"parentUuid":"58614313-3c4e-4554-9d25-4625f5829869","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_01CaosC6AQz54RZCL6UARNWg","type":"message","role":"as
docs/benchmarks/v10/results/runs/R05-session.jsonl, line 5
{"parentUuid":"b64f7340-01d2-4270-b106-55b49ba683c2","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_01LqNkWQj1uSCcj6Mugm6cAT","type":"message","role":"as
docs/benchmarks/v10/results/runs/R05-session.jsonl, line 8
{"parentUuid":"4b408c93-aa21-4251-a641-e52e36d95fdf","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_013d6Y4Q2t828c86tXxk3JWg","type":"message","role":"as
docs/benchmarks/v10/results/runs/R05-session.jsonl, line 15
{"parentUuid":"d9ee3253-4a64-48a3-b6be-063d24e2fa5b","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_015EAVbq3VSkJxRJkBnY6ViL","type":"message","role":"as
docs/benchmarks/v10/results/runs/R09-session.jsonl, line 5
{"parentUuid":"43f07978-80ac-43e7-b302-d66072823e58","isSidechain":false,"message":{"model":"claude-sonnet-4-6","id":"msg_bdrk_01CUfgQWyveGS1P1hxFKPchL","type":"message","role":"as
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 45e222fb3899. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. contains an encoded blob in a file that should be readable.
Date and source
Date checked:
github.com
Commit graded: 45e222fb3899a03569484ef50e5211065748e5bf
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