registry / oh-my-opencode / 5.1.0
oh-my-opencode@5.1.0
⚠ Under reviewThe Best AI Agent Harness - Batteries-Included OpenCode Plugin with Multi-Model Orchestration, Parallel Background Agents, and Crafted LSP/AST Tools
AI Security Review
scanned 1mo ago · by lpm-firewall-aiThe inspected behavior appears package-aligned and user-invoked or narrowly scoped, but a clean verdict cannot meet the mandatory fourteen-path citation coverage within the eight-citation limit. No independently supported warning or blocking behavior was established.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
Package installation runs the postinstall hook; configuration occurs through the install or setup command.
Impact
No confirmed credential theft, remote payload execution, broad agent-control mutation, or destructive behavior was established.
Mechanism
The lifecycle hook invalidates matching package cache entries, while the CLI conditionally copies configured MCP runtime assets and offers interactive setup.
AI rationale
The inspected behavior appears package-aligned and user-invoked or narrowly scoped, but a clean verdict cannot meet the mandatory fourteen-path citation coverage within the eight-citation limit. No independently supported warning or blocking behavior was established.
Evidence
postinstall.mjsdist/cli-node/index.jsdist/cli/index.js
Decision evidence
public snapshotAI called this Manual Review at 86.0% confidence as Unknown with low false-positive risk.
AI review observations
- The package exposes its command through a local bin wrapper.
- The postinstall cleanup targets cache entries prefixed with the package's own names.
- Both LSP QA scripts exercise rejection of malformed and out-of-scope request contexts.
- Both bundled CLI variants copy MCP runtimes only when the source configuration requests their matching argument.
- The Codex configuration workflow is exposed as an interactive install/setup command.
Evidence against
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell
HighEntropyStringsMinifiedTelemetryUrlStrings
GitDependency
Source & flagged code
24 flaggedpackage.jsonView file
1Install-time code directly mutates a foreign AI-agent control surface:
L62: "docs/reference/web-terminal-visual-qa.md",
L63: ".opencode/command",
L64: ".opencode/skills",
L65: ".agents/command",
L66: ".agents/skills",
L67: "packages/lsp-tools-mcp/package.json",
...
L97: "packages/prompts-core/prompts/ultrawork/codex.md",
L98: "packages/omo-codex/plugin/.codex-plugin",
L99: "!packages/omo-codex/plugin/node_modules",
...
L147: "test:fast": "bun run script/test-fast.ts",
L148: "test:senpi": "bun run build:senpi-plugin && tsgo --noEmit -p packages/omo-senpi/tsconfig.json && bun test --timeout 20000 packages/omo-senpi && bun test ./.agents/skills/senpi-qa/...
L149: "test:windows-codex": "bun run test:codex",
Write operation from dist/tui.js:
L2183: // packages/utils/src/xdg-data-dir.ts
L2184: i
Critical
Ai Agent Control Hijack
Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.
package.jsonView on unpkg · L1•scripts.postinstall = node postinstall.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node postinstall.mjs
Findings
5 Critical14 High9 Medium6 Low
CriticalSame File Env Network Executiondist/skills/browser/runtime/omowright/index.js
CriticalDownload Executedist/skills/browser/runtime/omowright/index.js
CriticalRemote Response Code Executiondist/index.js
CriticalAi Agent Control Hijackpackage.json
CriticalPrevious Version Dangerous Deltadist/cli-node/index.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processbin/oh-my-opencode.js
HighShelldist/cli-node/index.js
HighEvaldist/skills/ulw-research/scripts/layout-probe.test.ts
HighCredential Redirect Persistencedist/index.js
HighCommand Output Exfiltrationdist/cli-node/index.js
Affected versions and remediation
This report applies to oh-my-opencode@5.1.0.
See all versions of oh-my-opencode for other recorded verdicts.
- Review the evidence and your use of oh-my-opencode@5.1.0 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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