@blockrun/llm@3.24.4

⚠ Under review

TypeScript SDK for BlockRun - every frontier model behind one OpenAI-compatible client. Pay with a BlockRun API key or per-call in USDC. Smart routing picks the cheapest capable model. No rate limits.

AI Security Review

scanned 2d ago · by lpm-firewall-ai

The inspected payment behavior is consistent with the package’s stated per-call payment function, and no concrete attack was found. The declared Anthropic SDK and viem dependency sources were unresolved in the supplied inspection, so the package cannot be marked clean.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

A caller makes a request that receives an HTTP 402 payment challenge.

Impact

The request can authorize a payment described by the service challenge; no hidden transfer was established. Unreviewed dependency source leaves the overall assessment incomplete.

Mechanism

The SDK reads the challenge’s amount and recipient, then signs a USDC payment payload with the configured wallet.

AI rationale

Evidence

package.jsondist/index.jsdist/index.cjs

Decision evidence

public snapshot

AI called this Manual Review at 84.0% confidence as Unknown with medium false-positive risk.

AI review observations

The manifest points to ESM and CommonJS entrypoints and lists no install lifecycle hook.
The runtime signs the amount and recipient from an HTTP 402 payment challenge for USDC; this behavior is reached during a caller’s request.
When no BlockRun wallet key resolves, the wallet helper creates and saves a new wallet.
The manifest declares Anthropic SDK and viem dependencies; the supplied dependency inspection could not resolve their source, so their runtime behavior remains unreviewed.

Evidence against

The inspected payment flow uses the service’s payment challenge and does not show a hidden transfer to a package-selected recipient.
No concrete malicious behavior was established in the inspected package entrypoints.

Behavioral surface

Source

CryptoEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

Source & flagged code

5 flagged

dist/index.jsView file

Lines 81-121javascript

81 if (temperature === void 0 || temperature === null) {

82 return;

83 }

84 if (typeof temperature !== "number") {

85 throw new Error("temperature must be a number");

86 }

87 if (temperature < 0 || temperature > 2) {

88 throw new Error("temperature must be between 0 and 2");

89 }

90}

91function validateTopP(topP) {

92 if (topP === void 0 || topP === null) {

93 return;

94 }

95 if (typeof topP !== "number") {

96 throw new Error("topP must be a number");

97 }

98 if (topP < 0 || topP > 1) {

99 throw new Error("topP must be between 0 and 1");

100 }

101}

102function validatePrivateKey(key) {

103 if (typeof key !== "string") {

Critical

Wallet Drain

Source uses private key material to transfer cryptocurrency funds.

dist/index.jsView on unpkg · L101

104 throw new Error("Private key must be a string");

105 }

106 if (!key.startsWith("0x")) {

107 throw new Error("Private key must start with 0x");

108 }

109 if (key.length !== 66) {

110 throw new Error(

111 "Private key must be 66 characters (0x + 64 hexadecimal characters)"

112 );

113 }

114 if (!/^0x[0-9a-fA-F]{64}$/.test(key)) {

115 throw new Error(

116 "Private key must contain only hexadecimal characters (0-9, a-f, A-F)"

117 );

118 }

119}

120function validateApiUrl(url) {

121 let parsed;

Lines 5452-5492javascript

5452 } catch (err) {

5453 throw withDisposition(err, "paid-or-in-doubt");

5454 }

5455 }

5456 /** Read a 402's requirements and sign the exact payment for them. Sends nothing. */

5457 async signFrom402(url, response) {

5458 let paymentHeader = response.headers.

dist/index.cjsView file

232Trigger-reachable chain: manifest.main -> dist/index.cjs L232: } L233: function validatePrivateKey(key) { L234: if (typeof key !== "string") { ... L259: throw new Error( L260: `Invalid protocol: ${parsed.protocol}. Use http:// or https://` L261: ); ... L330: } L331: const key = options.apiKey ?? (options.privateKey === void 0 && typeof process !== "undefined" ? process.env?.BLOCKRUN_API_KEY : void 0); L332: if (key === void 0) return void 0; ... L397: try { L398: body = await response.json(); L399: } catch {

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/index.cjsView on unpkg · L232

package.jsonView file

Lines 1-40json

2 "name": "@blockrun/llm",

3 "version": "3.24.4",

4 "type": "module",

5 "description": "TypeScript SDK for BlockRun - every frontier model behind one OpenAI-compatible client. Pay with a BlockRun API key or per-call in USDC. Smart routing picks the cheapest capable model. No rate limits.",

Source & flagged code

5 flagged · loading source

dist/index.jsView file

101} L102: function validatePrivateKey(key) { L103: if (typeof key !== "string") { ... L128: throw new Error( L129: `Invalid protocol: ${parsed.protocol}. Use http:// or https://` L130: ); ... L199: } L200: const key = options.apiKey ?? (options.privateKey === void 0 && typeof process !== "undefined" ? process.env?.BLOCKRUN_API_KEY : void 0); L201: if (key === void 0) return void 0; ... L266: try { L267: body = await response.json(); L268: } catch {

Critical

Wallet Drain

Source uses private key material to transfer cryptocurrency funds.

dist/index.jsView on unpkg · L101

5472const paymentRequired = parsePaymentRequired(paymentHeader); const details = extractPaymentDetails(paymentRequired); const extensions = paymentRequired.extensions; const paymentPayload = await createPaymentPayload( this.privateKey, this.account.address, details.recipient, details.amount, details.network || "eip155:8453", { resourceUrl: validateResourceUrl(

Low

Ai Review Evidence

The runtime signs the amount and recipient from an HTTP 402 payment challenge for USDC; this behavior is reached during a caller’s request.

dist/index.jsView on unpkg · L5472

dist/index.cjsView file

Findings

2 Critical3 Medium7 Low

CriticalWallet Draindist/index.js

CriticalTrigger Reachable Dangerous Capabilitydist/index.cjs

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

LowSuspicious Lifecycle Evidencepackage.json

LowAi Review Evidencedist/index.js

Affected versions and remediation

This report applies to @blockrun/llm@3.24.4.

See all versions of @blockrun/llm for other recorded verdicts.

Review the evidence and your use of @blockrun/llm@3.24.4 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: 2026-10-20 19:17:24.434Z (UTC).

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