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@softize/opus@9.1.1: AI-agent control-surface risk | LPM Firewall

registry / @softize/opus / 9.1.1

@softize/opus@9.1.1

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

AI Security Review

scanned 4h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package runs setup automatically in the consuming repository. That setup writes agent skills, Claude configuration/hooks, instruction files, and Git hook configuration.

Static reason

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

Trigger

npm postinstall during installation of a project declaring @softize/opus

Impact

A dependency install changes agent behavior and repository hook execution without an explicit user command.

Mechanism

unconsented materialization of AI-agent and Git control surfaces

Policy narrative

The install-time postinstall script identifies the consuming project and calls initProject. That calls materializeOpus in setup mode, which copies package-provided skills into .agents and .claude, registers a Claude Stop command hook, modifies AGENTS.md and CLAUDE.md, configures Git hooks, and can remove ignore rules for those agent artifacts. These changes occur on dependency installation rather than an explicit setup command.

Rationale

The package performs unconsented postinstall mutation of foreign AI-agent control surfaces and repository execution settings. This meets the blocking policy despite no observed network exfiltration.

Evidence

package.jsonbin/lib/postinstall.mjsbin/lib/init.mjsbin/lib/materialize.mjsregistry/hooks/opus-check-on-stop.mjsregistry/git/pre-push.d/opusopus.json.agents/skills/.claude/skills/

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@9.0.2 matchedPath = bin/lib/db.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.2 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@9.0.2 matchedPath = bin/lib/gen.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.2 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 327-356json

327 "jsonwebtoken": "^9.0.2",

328 "kysely": "^0.27.0",

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

330 "pg": "^8.13.0",

331 "pino": "^9.5.0",

332 "react": "^19.0.0",

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

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

335 "tsx": "^4.19.0",

336 "vite": "^6.0.0",

337 "vitest": "^2.1.0",

338 "zod": "^3.24.0"

339 },

340 "repository": {

341 "type": "git",

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

343 "directory": "packages/opus"

344 },

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

346 "scripts": {

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

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L347

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L347

348 "typecheck": "tsc --noEmit",

349 "test": "vitest run",

350 "test:watch": "vitest",

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

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

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

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

355 }

356}

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@9.0.2 matchedPath = bin/lib/db.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.2 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@9.0.2 matchedPath = bin/lib/gen.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:9.0.2 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