Claude Code, Skill
stackshift
stackshift, a skill 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.
evals/baseline_operator.py, line 205
result = subprocess.run(
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
evals/baseline_operator.py, line 205
result = subprocess.run(
evals/baseline_operator.py, line 226
result = subprocess.run(
evals/baseline_operator.py, line 535
version = subprocess.run(
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evals/baseline_operator.py, line 564
dirty = subprocess.run(
evals/baseline_operator.py, line 650
version = subprocess.run(
evals/baseline_operator.py, line 659
head = subprocess.run(
evals/baseline_operator.py, line 663
calibration = subprocess.run(
evals/baseline_operator.py, line 669
dirty = 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
artifacts/act-04-invalid-1/session.jsonl, line 43
{"timestamp":"2026-08-09T01:34:28.631Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe428-3717-71b3-8f7e-c2e10ff09d5f","call_id":"call_QQwqyIFt
artifacts/act-04-invalid-1/session.jsonl, line 48
{"timestamp":"2026-08-09T01:34:34.384Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe428-4d90-7fa0-a1ca-d5d92cdef6c4","call_id":"call_GdcgVkOK
artifacts/act-04-invalid-1/tool-events.jsonl, line 7
{"timestamp":"2026-08-09T01:34:28.631Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe428-3717-71b3-8f7e-c2e10ff09d5f","call_id":"call_QQwqyIFt
Show more
artifacts/act-04-invalid-1/tool-events.jsonl, line 10
{"timestamp":"2026-08-09T01:34:34.384Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe428-4d90-7fa0-a1ca-d5d92cdef6c4","call_id":"call_GdcgVkOK
artifacts/act-04/session.jsonl, line 43
{"timestamp":"2026-08-09T15:48:13.082Z","type":"event_msg","payload":{"type":"web_search_end","call_id":"exec-3da12b03-fcda-4d69-9aca-e18ee93eea1c","query":"site:nextjs.org/docs ap
artifacts/act-04/session.jsonl, line 44
{"timestamp":"2026-08-09T15:48:13.087Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe735-d69f-71f0-ac41-67632446cdda","call_id":"call_HZTAHmid
artifacts/act-04/tool-events.jsonl, line 8
{"timestamp":"2026-08-09T15:48:13.082Z","type":"event_msg","payload":{"type":"web_search_end","call_id":"exec-3da12b03-fcda-4d69-9aca-e18ee93eea1c","query":"site:nextjs.org/docs ap
artifacts/act-04/tool-events.jsonl, line 9
{"timestamp":"2026-08-09T15:48:13.087Z","type":"response_item","payload":{"type":"custom_tool_call_output","id":"ctco_019fe735-d69f-71f0-ac41-67632446cdda","call_id":"call_HZTAHmid
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_UNCONFIRMED
artifacts/act-04-invalid-1/session.jsonl, line 3
{"timestamp":"2026-08-09T01:32:02.369Z","type":"response_item","payload":{"type":"message","id":"msg_019fe425-fbc1-7872-8e3a-58aadf306894","role":"developer","content":[{"type":"in
artifacts/act-04-invalid-1/session.jsonl, line 7
{"timestamp":"2026-08-09T01:32:02.369Z","type":"world_state","payload":{"full":true,"state":{"agents_md":{},"apps_instructions":true,"collaboration_mode":{"mode":"default","model":
artifacts/act-04/session.jsonl, line 3
{"timestamp":"2026-08-09T15:46:54.740Z","type":"response_item","payload":{"type":"message","id":"msg_019fe734-a494-7132-8c6a-222fe64b7fa7","role":"developer","content":[{"type":"in
Show more
artifacts/act-04/session.jsonl, line 7
{"timestamp":"2026-08-09T15:46:54.740Z","type":"world_state","payload":{"full":true,"state":{"agents_md":{},"apps_instructions":true,"collaboration_mode":{"mode":"default","model":
artifacts/baseline-operator-config-freeze-dry-run-v0.2/executions/synthetic-operator-01/attempt-001/session.jsonl, line 2
{"timestamp":"2026-08-12T15:16:26.214Z","type":"response_item","payload":{"type":"message","id":"msg_019ff68b-d1e6-7923-8401-cfc8aae61ef8","role":"developer","content":[{"type":"in
artifacts/baseline-operator-config-freeze-dry-run-v0.2/executions/synthetic-operator-01/attempt-001/session.jsonl, line 6
{"timestamp":"2026-08-12T15:16:26.216Z","type":"world_state","payload":{"full":true,"state":{"agents_md":{},"apps_instructions":true,"environments":{"environments":{"local":{"cwd":
artifacts/baseline-operator-config-freeze-dry-run-v0.2/executions/synthetic-operator-01/attempt-001/transport-events.jsonl, line 13
{"direction": "server_to_client", "message": {"emittedAtMs": 1786547786216, "method": "rawResponseItem/completed", "params": {"item": {"content": [{"text": "<skills_instructions>\n
artifacts/baseline-operator-config-freeze-dry-run-v0.3/executions/synthetic-operator-01/attempt-001/session.jsonl, line 2
{"timestamp":"2026-08-12T15:58:12.160Z","type":"response_item","payload":{"type":"message","id":"msg_019ff6b2-0ec0-7600-82f4-c29aad4a67f1","role":"developer","content":[{"type":"in
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
artifacts/act-04/session.jsonl, line 1
{"timestamp":"2026-08-09T15:46:54.570Z","type":"session_meta","payload":{"session_id":"019fe731-2df6-71b2-8da3-78ecd6cf8c9c","id":"019fe731-2df6-71b2-8da3-78ecd6cf8c9c","timestamp"
artifacts/act-04-invalid-1/session.jsonl, line 1
{"timestamp":"2026-08-09T01:32:02.081Z","type":"session_meta","payload":{"session_id":"019fe424-e858-7e81-91ad-c016ed3f9d1f","id":"019fe424-e858-7e81-91ad-c016ed3f9d1f","timestamp"
artifacts/act-04/session.jsonl, line 29
{"timestamp":"2026-08-09T15:47:24.946Z","type":"response_item","payload":{"type":"reasoning","id":"rs_062d00b24c8ab4fd016a78a105739c819586de2baa2d8444d2","summary":[],"encrypted_co
Show more
artifacts/baseline-operator-config-freeze-dry-run-v0.4/executions/synthetic-operator-01/attempt-001/session.jsonl, line 27
{"timestamp":"2026-08-12T16:16:38.747Z","type":"response_item","payload":{"type":"reasoning","id":"rs_018d10a7b36f531f016a7c9c66ac888195a644edc53e42c4fc","summary":[],"encrypted_co
artifacts/baseline-operator-config-freeze-dry-run-v0.4/executions/synthetic-operator-01/attempt-001/transport-events.jsonl, line 97
{"direction": "server_to_client", "message": {"emittedAtMs": 1786551398747, "method": "rawResponseItem/completed", "params": {"item": {"encrypted_content": "gAAAAABqfJxmawWaCrBXQZk
artifacts/baseline-operator-config-freeze-dry-run-v0.9/executions/synthetic-operator-01/attempt-001/session.jsonl, line 34
{"timestamp":"2026-08-12T16:41:44.406Z","type":"response_item","payload":{"type":"reasoning","id":"rs_0c0b8fd0ac98f7e6016a7ca247573c819795734d2001da05c2","summary":[],"encrypted_co
artifacts/baseline-operator-config-freeze-dry-run-v0.9/executions/synthetic-operator-01/attempt-001/transport-events.jsonl, line 129
{"direction": "server_to_client", "message": {"emittedAtMs": 1786552904420, "method": "rawResponseItem/completed", "params": {"item": {"encrypted_content": "gAAAAABqfKJIQ9Y2fxlPxCv
artifacts/flow-04/session.jsonl, line 21
{"timestamp":"2026-08-09T16:51:20.538Z","type":"response_item","payload":{"type":"reasoning","id":"rs_0f5ab07a742376e9016a78b0062fd08190ba2280deb32eb521","summary":[],"encrypted_co
artifacts/live-synthetic-parser-requalification-v1.0/executions/synthetic-static-directory-guard-false-01/attempt-001/session.jsonl, line 27
{"timestamp":"2026-08-13T15:22:39.812Z","type":"response_item","payload":{"type":"reasoning","id":"rs_0882f38bfb3e4f4c016a7de13f8a948194aaa6ca1d9fcfa032","summary":[],"encrypted_co
artifacts/live-synthetic-parser-requalification-v1.0/executions/synthetic-static-directory-guard-false-01/attempt-001/transport-events.jsonl, line 72
{"direction": "server_to_client", "message": {"emittedAtMs": 1786634559812, "method": "rawResponseItem/completed", "params": {"item": {"encrypted_content": "gAAAAABqfeE_SKeDsUp7pck
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 84fa9b7c68cf. 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. contains an encoded blob in a file that should be readable.
Date and source
Date checked:
github.com
Commit graded: 84fa9b7c68cfa1c3bfbb66f538705a0f4f651fed
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