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@softize/opus@9.0.2: AI-agent control-surface risk | LPM Firewall

registry / @softize/opus / 9.0.2

@softize/opus@9.0.2

End-to-end action protocol for TypeScript. Single package with subpath exports (core + adapters).

AI Security Review

scanned 2d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. npm postinstall mutates the consuming repository's broad Claude and agent-control surfaces. It installs skills and a Stop hook that executes the package CLI when an agent turn ends.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm install of @softize/opus

Impact

Unconsented persistence and execution in the consumer's AI-agent environment.

Mechanism

automatic materialization of agent skills, instructions, and Claude hook configuration

Policy narrative

Installing the package automatically invokes initProject in the consuming project. That setup writes broad .agents and .claude content, modifies AGENTS.md and CLAUDE.md, configures a Claude Stop hook, and installs a hook that invokes the Opus CLI after agent turns. These changes occur without an explicit user setup command, creating an unconsented AI-agent control surface.

Rationale

The package has concrete postinstall mutation of foreign, broad AI-agent control surfaces, including a command-executing Claude hook. This meets the install-control-surface block boundary even though no exfiltration was found.

Evidence

package.jsonbin/lib/postinstall.mjsbin/lib/init.mjsbin/lib/materialize.mjsregistry/hooks/opus-check-on-stop.mjs.agents/skills/**.claude/skills/**.claude/hooks/opus-check-on-stop.mjs.claude/settings.jsonAGENTS.md

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./bin/lib/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node ./bin/lib/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

src/ui/docs/markdown.tsxView file

59) L60: const fn = new Function(...entries.map(([k]) => k), js) L61: const args = entries.map(([, v]) => v)

Low

Eval

Package source references a known benign dynamic code generation pattern.

src/ui/docs/markdown.tsxView on unpkg · L59

bin/lib/db-migrate-runner.mjsView file

44L45: const mod = await import(pathToFileURL(path.resolve(configPath)).href) L46: const config = mod.default ?? mod

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/lib/db-migrate-runner.mjsView on unpkg · L44

bin/lib/init.mjsView file

1Install-time code directly mutates a foreign AI-agent control surface: L238: } else if (!twConfig) { L239: await fs.writeFile( L240: path.join(projectDir, "tailwind.config.js"), ... L318: if (!(await exists(markerPath)) || (await fs.readFile(markerPath, "utf8")) !== marker) { L319: await fs.writeFile(markerPath, marker); L320: (prev === null ? created : synced).push(MARKER); ... L323: // Remove somente o bloco legado que o próprio setup antigo declarava como gerenciado. L324: const claudePath = path.join(projectDir, "CLAUDE.md"); L325: if (await exists(claudePath)) { ... L328: if (next !== cur) { L329: await fs.writeFile(claudePath, next); L330: synced.push("CLAUDE.md (bloco legado removido)"); Write operation from bin/lib/init.mjs: L238: } else if (!twConfig) { L239: await fs.writeFile( L

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

bin/lib/init.mjsView on unpkg · L1

bin/cli.mjsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 13

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

bin/cli.mjsView on unpkg

bin/lib/db.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@9.0.0 matchedPath = bin/lib/db.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/db.mjsView on unpkg

bin/lib/gen.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@9.0.0 matchedPath = bin/lib/gen.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/gen.mjsView on unpkg

Source & flagged code

8 flagged

package.jsonView file

Lines 312-341json

312 "jsonwebtoken": "^9.0.2",

313 "kysely": "^0.27.0",

314 "node-cron": "^3.0.3",

315 "pg": "^8.13.0",

316 "pino": "^9.5.0",

317 "react": "^19.0.0",

318 "react-dom": "^19.0.0",

319 "react-hook-form": "^7.54.0",

320 "tsx": "^4.19.0",

321 "vite": "^6.0.0",

322 "vitest": "^2.1.0",

323 "zod": "^3.24.0"

324 },

325 "repository": {

326 "type": "git",

327 "url": "git+https://github.com/softize-dev/opus.git",

328 "directory": "packages/opus"

329 },

330 "homepage": "https://opus.softize.com.br",

331 "scripts": {

332 "postinstall": "node ./bin/lib/postinstall.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L332

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L332

333 "typecheck": "tsc --noEmit",

334 "test": "vitest run",

335 "test:watch": "vitest",

336 "test:cov": "vitest run --coverage",

337 "registry:up": "npx -y verdaccio --config ~/.config/verdaccio/config.yaml",

338 "release": "bash ./scripts/release.sh",

339 "release:local": "bash ./scripts/release.sh --local"

340 }

341}

src/ui/docs/markdown.tsxView file

Lines 39-79tsx

39 scope,

40 previewClassName,

41}: {

42 code: string

43 scope: Record<string, unknown>

44 previewClassName?: string

45}): React.ReactElement {

46 const result = React.useMemo

bin/lib/db-migrate-runner.mjsView file

Lines 24-64javascript

24

25function emit(obj) {

26 process.stdout.write(`\n${JSON.stringify(obj)}\n`)

27}

28

bin/lib/init.mjsView file

Lines 1-21javascript

1/** opus setup: aplica o marcador per-app e os artefatos Opus rastreáveis no repo. */

2

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

bin/lib/init.mjsView on unpkg · L1

3import { promises as fs } from "node:fs";

4import path from "node:path";

5

bin/cli.mjsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 13

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

bin/cli.mjsView on unpkg

bin/lib/db.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@9.0.0 matchedPath = bin/lib/db.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/db.mjsView on unpkg

bin/lib/gen.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@9.0.0 matchedPath = bin/lib/gen.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/gen.mjsView on unpkg