registry / @threadbase-sh/streamer / 1.22.2

@threadbase-sh/streamer@1.22.2

PTY session management, WebSocket streaming, and REST API server for Claude Code conversations

AI Security Review

scanned 7d ago · by lpm-firewall-ai

LPM treats this as warn-only first-party agent extension lifecycle risk. No confirmed malicious install-time attack surface was found. Residual risk is explicit/user-invoked Claude config seeding and PTY control of Claude sessions with acceptEdits.

Static reason

High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source

Trigger

npm postinstall, explicit CLI server/session use, or direct seed-claude-config execution

Impact

Can run Claude sessions and, when explicitly invoked, mark a configured Claude project trusted; install hook only changes node-pty helper permissions.

Mechanism

dependency chmod plus first-party Claude PTY streaming/config seeding

Rationale

Source inspection supports a warning rather than a block: the npm postinstall is narrowly scoped to chmoding node-pty's helper, while the Claude config and update behaviors are explicit/runtime features. Because the package can modify Claude trust state when invoked, keep it flagged as agent extension lifecycle risk, not malicious malware.

Evidence

package.jsondist/index.cjsdist/cli.cjsdist/seed-claude-config.cjsnode_modules/node-pty/prebuilds/<platform>-<arch>/spawn-helper~/.threadbase/server.yaml$CLAUDE_CONFIG~/.claude/projects/<encoded-project>/<session>.jsonl~/.threadbase/releases~/.threadbase/current~/.threadbase/cli.js

Network endpoints6

api.github.comlocalhost:8081localhost:19006localhost:3000localhost:<port>ws://localhost:<port>/ws

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json postinstall chmods node-pty prebuild spawn-helper in dependency path
dist/index.cjs spawns Claude via node-pty with --permission-mode acceptEdits
dist/seed-claude-config.cjs can write CLAUDE_CONFIG to accept trust/onboarding for /data/.claude/projects
dist/cli.cjs has user-invoked update path fetching GitHub release assets

Evidence against

postinstall has no network, payload execution, or AI-agent config mutation
Claude config mutation is in explicit seed script, not npm install lifecycle
Update downloads verify manifest sha256/size and require update config or signed webhook secret
Network endpoints are package-aligned local server, GitHub updater, and localhost pairing
No credential harvesting or exfiltration flow found

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 4 file(s), 1.34 MB of source, external domains: github.com, json-schema.org

Oversized source lightweight scan

dist/cli.cjs6.81 MB file, sampled 256 KB

FilesystemNetworkChildProcessEnvironmentVarsCryptoHighEntropyStrings

Source & flagged code

8 flagged

package.jsonView file

Lines 38-78json

38 "files": [

39 "dist"

40 ],

41 "publishConfig": {

42 "access": "public"

43 },

44 "engines": {

45 "node": ">=18"

46 },

47 "scripts": {

48 "build": "tsup && node -e \"const{cpSync}=require('fs');cpSync('src/db/migrations','dist/migrations',{recursive:true});cpSync('src/db/pg-migrations','dist/pg-migrations',{recursive:true})\"",

49 "dev": "tsup --watch",

50 "pretest": "npm rebuild better-sqlite3",

51 "test": "vitest run",

52 "test:verbose": "vitest run --reporter=verbose",

53 "test:watch": "vitest",

54 "lint": "tsc --noEmit && npx biome check .",

55 "format": "npx biome format --write .",

56 "check": "npx biome check --write .",

57 "prepare": "patch-package",

58 "postinstall": "node -e \"try{require('fs').chmodSync(require('path').join(require.resolve('node-pty'),'..','..','prebuilds',process.platform+'-'+process.arch,'spawn-helper'),0o755)}catch{}\"",

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg · L58

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L58

59 "prepublishOnly": "npm run build",

60 "test:contracts": "vitest run __tests__/contracts/",

61 "test:e2e": "vitest run __tests__/e2e/",

62 "migrate": "tsx scripts/migrate.ts",

63 "migrate:projects": "tsx scripts/migrate-projects.ts",

64 "db:validate": "tsx scripts/validate-db.ts",

65 "update-schema": "tsx scripts/update-schema.ts",

66 "update-schema:mobile": "tsx scripts/update-schema.ts --mobile",

67 "update-schema:desktop": "tsx scripts/update-schema.ts --desktop",

68 "update-schema:shared": "tsx scripts/update-schema.ts --shared",

69 "deploy": "scripts/deploy.sh deploy",

70 "deploy:force": "scripts/deploy.sh deploy --force",

71 "deploy:rollback": "scripts/deploy.sh rollback",

72 "deploy:status": "scripts/deploy.sh status",

73 "deploy:healthcheck": "scripts/deploy.sh healthcheck",

74 "deploy:linux": "scripts/deploy-linux.sh deploy",

75 "deploy:linux:force": "scripts/deploy-linux.sh deploy --force",

76 "deploy:linux:rollback": "scripts/deploy-linux.sh rollback",

77 "deploy:linux:status": "scripts/deploy-linux.sh status",

78 "deploy:linux:healthcheck": "scripts/deploy-linux.sh healthcheck",

dist/index.jsView file

Lines 35-75javascript

36// src/agent/agent-config.ts

37var DEFAULTS = {

38 TEMPORAL_ADDRESS: "localhost:7233",

39 TEMPORAL_NAMESPACE: "default",

40 TEMPORAL_TASK_QUEUE: "agent-tasks",

41 PROGRESS_HMAC_SECRET: "dev-secret-change-me",

42 PROGRESS_WEBHOOK_TIMESTAMP_SKEW_SECONDS: "300",

dist/index.cjsView file

Lines 81-121javascript

82// src/agent/agent-config.ts

83var DEFAULTS = {

84 TEMPORAL_ADDRESS: "localhost:7233",

85 TEMPORAL_NAMESPACE: "default",

86 TEMPORAL_TASK_QUEUE: "agent-tasks",

87 PROGRESS_HMAC_SECRET: "dev-secret-change-me",

88 PROGRESS_WEBHOOK_TIMESTAMP_SKEW_SECONDS: "300",

dist/cli.cjsView file

•path = dist/cli.cjs kind = oversized_source_file sizeBytes = 7139736 magicHex = [redacted]

High

Oversized Source File

Package contains source files above the static scanner size ceiling.

dist/cli.cjsView on unpkg

•path = dist/cli.cjs kind = oversized_cli_entrypoint sizeBytes = 7139736 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.cjsView on unpkg

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node -e "try{require('fs').chmodSync(require('path').join(require.resolve('node-pty'),'..','..','prebuilds',process.platform+'-'+process.arch,'spawn-helper'),0o755)}catch{}"

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg

•scripts.postinstall = node -e "try{require('fs').chmodSync(require('path').join(require.resolve('node-pty'),'..','..','prebuilds',process.platform+'-'+process.arch,'spawn-helper'),0o755)}catch{}"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

dist/index.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @threadbase-sh/streamer@1.24.4 matchedIdentity = npm:QHRocmVhZGJhc2Utc2gvc3RyZWFtZXI:1.24.4 similarity = 0.500 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/index.jsView on unpkg

483// src/process-discovery.ts L484: import { execFile } from "child_process"; L485: import { platform as platform2 } from "os";

High

Child Process

Package source references child process execution.

dist/index.jsView on unpkg · L483

55} L56: function readAgentConfig(env = process.env) { L57: const enabled = isTruthy(env.MULTI_AGENT_FLOW); ... L160: try { L161: return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(expected)); L162: } catch { ... L179: const app = new Hono(); L180: app.post("/sessions/:sessionId/progress", async (c) => { L181: if (!deps.agentConfig.enabled) { ... L281: function configDir() { L282: return process.env.THREADBASE_CONFIG_DIR ?? join2(homedir(), ".threadbase"); L283: }

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/index.jsView on unpkg · L55

dist/index.cjsView file

101Cross-file remote execution chain: dist/index.cjs spawns dist/index.js; helper contains network access plus dynamic code execution. L101: } L102: function readAgentConfig(env = process.env) { L103: const enabled = isTruthy(env.MULTI_AGENT_FLOW); ... L206: try { L207: return import_node_crypto.default.timingSafeEqual(Buffer.from(signature), Buffer.from(expected)); L208: } catch { ... L225: const app = new import_hono.Hono(); L226: app.post("/sessions/:sessionId/progress", async (c) => { L227: if (!deps.agentConfig.enabled) { ... L327: function configDir() { L328: return process.env.THREADBASE_CONFIG_DIR ?? (0, import_path.join)((0, import_os.homedir)(), ".threadbase"); L329: }

High

Cross File Remote Execution Context

Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.

dist/index.cjsView on unpkg · L101

dist/cli.cjsView file

•path = dist/cli.cjs kind = oversized_source_file sizeBytes = 7139736 magicHex = [redacted]

High

Oversized Source File

Package contains source files above the static scanner size ceiling.

dist/cli.cjsView on unpkg

•path = dist/cli.cjs kind = oversized_cli_entrypoint sizeBytes = 7139736 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.cjsView on unpkg

Findings

2 Critical5 High4 Medium6 Low

CriticalRed Install Lifecycle Scriptpackage.json

CriticalPrevious Version Dangerous Deltadist/index.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/index.js

HighShell

HighCross File Remote Execution Contextdist/index.cjs

HighOversized Source Filedist/cli.cjs

MediumNetwork

MediumEnvironment Vars

MediumOversized Cli Entrypointdist/cli.cjs

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

LowWeak Cryptodist/index.js

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

84%Warn

Verdict confidence

IntentDangerous Capability

TypeAgent extension lifecycle risk

False-positive riskMedium

Review stagesource_first_review

Firewall policyWarn-only agent extension risk

Package metadata

npm

AuthorRonen Mars

Maintainersronenmars

Version1.27.0

PublishedJul 3, 2026

LicenseMIT

Dependencies25

Integrityverified

Package size4.30 MB

Files27

Keywordsclaudeclaude-codeptywebsocketterminalstreamerthreadbase

LinksRepository Homepage Issues

Runtime surface

package.json

Entrypointsmain → dist/index.cjsmodule → dist/index.jstypes → dist/index.d.tsexports mapbin → threadbase-streamer

Runtimenode >=18

Artifact21.2 MB · 27 files1 signature(s) · provenance

Install lifecyclepostinstallprepareprepublishOnly

Behavioral surface

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShellHighEntropyStringsUrlStringsManifest: clean

Source & flagged code

8 flagged

package.jsonView file

Lines 38-78json

38 "files": [

39 "dist"

40 ],

41 "publishConfig": {

42 "access": "public"

43 },

44 "engines": {

45 "node": ">=18"

46 },

47 "scripts": {

48 "build": "tsup && node -e \"const{cpSync}=require('fs');cpSync('src/db/migrations','dist/migrations',{recursive:true});cpSync('src/db/pg-migrations','dist/pg-migrations',{recursive:true})\"",

49 "dev": "tsup --watch",

50 "pretest": "npm rebuild better-sqlite3",

51 "test": "vitest run",

52 "test:verbose": "vitest run --reporter=verbose",

53 "test:watch": "vitest",

54 "lint": "tsc --noEmit && npx biome check .",

55 "format": "npx biome format --write .",

56 "check": "npx biome check --write .",

57 "prepare": "patch-package",

58 "postinstall": "node -e \"try{require('fs').chmodSync(require('path').join(require.resolve('node-pty'),'..','..','prebuilds',process.platform+'-'+process.arch,'spawn-helper'),0o755)}catch{}\"",

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg · L58

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L58

59 "prepublishOnly": "npm run build",

60 "test:contracts": "vitest run __tests__/contracts/",

61 "test:e2e": "vitest run __tests__/e2e/",

62 "migrate": "tsx scripts/migrate.ts",

63 "migrate:projects": "tsx scripts/migrate-projects.ts",

64 "db:validate": "tsx scripts/validate-db.ts",

65 "update-schema": "tsx scripts/update-schema.ts",

66 "update-schema:mobile": "tsx scripts/update-schema.ts --mobile",

67 "update-schema:desktop": "tsx scripts/update-schema.ts --desktop",

68 "update-schema:shared": "tsx scripts/update-schema.ts --shared",

69 "deploy": "scripts/deploy.sh deploy",

70 "deploy:force": "scripts/deploy.sh deploy --force",

71 "deploy:rollback": "scripts/deploy.sh rollback",

72 "deploy:status": "scripts/deploy.sh status",

73 "deploy:healthcheck": "scripts/deploy.sh healthcheck",

74 "deploy:linux": "scripts/deploy-linux.sh deploy",

75 "deploy:linux:force": "scripts/deploy-linux.sh deploy --force",

76 "deploy:linux:rollback": "scripts/deploy-linux.sh rollback",

77 "deploy:linux:status": "scripts/deploy-linux.sh status",

78 "deploy:linux:healthcheck": "scripts/deploy-linux.sh healthcheck",

dist/index.jsView file

Lines 35-75javascript

36// src/agent/agent-config.ts

37var DEFAULTS = {

38 TEMPORAL_ADDRESS: "localhost:7233",

39 TEMPORAL_NAMESPACE: "default",

40 TEMPORAL_TASK_QUEUE: "agent-tasks",

41 PROGRESS_HMAC_SECRET: "dev-secret-change-me",

42 PROGRESS_WEBHOOK_TIMESTAMP_SKEW_SECONDS: "300",

dist/index.cjsView file

Lines 81-121javascript

82// src/agent/agent-config.ts

83var DEFAULTS = {

84 TEMPORAL_ADDRESS: "localhost:7233",

85 TEMPORAL_NAMESPACE: "default",

86 TEMPORAL_TASK_QUEUE: "agent-tasks",

87 PROGRESS_HMAC_SECRET: "dev-secret-change-me",

88 PROGRESS_WEBHOOK_TIMESTAMP_SKEW_SECONDS: "300",

dist/cli.cjsView file

•path = dist/cli.cjs kind = oversized_source_file sizeBytes = 7139736 magicHex = [redacted]

High

Oversized Source File

Package contains source files above the static scanner size ceiling.

dist/cli.cjsView on unpkg

•path = dist/cli.cjs kind = oversized_cli_entrypoint sizeBytes = 7139736 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.cjsView on unpkg