btspoony/mstar-harness
C3An omni-plugin for harness engineering workflows with multi-agents, programmatic gates and skills.
★ 10+ · btspoony/mstar-harness source on GitHub · this plugin in the registry
btspoony/mstar-harness is a DeepSeek Harness plugin rated C3 — powerful capability combined with sensitive behavior. It patches the dsh runtime, runs code at install time, gates tool execution, executes system commands.
What it can do
| Capability | Flag | Evidence |
|---|---|---|
| patches the dsh runtime | runtime_patch | ./bundle/cordis.patch.yml |
| runs code at install time | install_script | postinstall: bun run opencode:bundle-assets && bun run dsh:bundle-assets |
| gates tool execution | tool_gate | hook: tools/pre-execute |
| executes system commands | exec | ×32 src, e.g. scripts/drift-lint.ts:54, scripts/drift-lint.ts:54 |
Services it injects
invariants loader locale sessions skills slots
Hooks it attaches
agent/pre-step fs/edit-intent fs/write-intent mstar/dispatch-gate mstar/seam-lint mstar/skill-lint mstar/status-gate tools/pre-execute
Outbound domains
agent-plugins.org mathiasbynens.be opencode.ai
Environment variables it reads
MSTAR_WORKING_BRANCH MSTAR_CLI_PROJECT_ROOT MSTAR_HARNESS_DIR SDD_DIR GITHUB_ACTIONS RELEASE_VERSION GITHUB_REF_NAME INIT_CWD MSTAR_CONTROL_ROOT MSTAR_GIT_PROBE_TIMEOUT_MS
How to read this
Levels measure capability surface and transparency, not maliciousness. A C3 plugin can be entirely legitimate — a desktop shell genuinely needs subprocesses. The point is that you can see this before installing. See the levels explained and how dsh plugins work.
Findings come from static analysis of shipped code; nothing is executed. Think a flag is wrong? Open an issue — every flag cites the file and line it came from.