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Security audit

Mint Artblocks Token

Security checks for vulnerabilities and agentic risk

Overview

This skill is a narrow Art Blocks minting guide that can help prepare an NFT purchase transaction, with no bundled code or hidden behavior found.

Before installing, understand that this skill helps prepare Art Blocks NFT mint transactions. Only sign in your wallet after checking the project, chain, price, recipient address, warnings, and gas cost. For eligibility checks, prefer a single wallet address if you do not want profile-linked wallets queried together.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (5)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill enables users to build and sign an on-chain NFT purchase transaction but does not present a clear upfront warning that this action can spend ETH and incur irreversible blockchain fees. In a transaction-oriented skill, omission of a prominent spending-risk notice increases the chance of uninformed approval, especially when users may treat the tool as informational rather than financial execution support.

Content

No source excerpt is available for this finding.

Whitespace Padding

Medium
Category
Prompt Injection
Confidence
70% confidence
Finding

Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Content

Scanner excerpt · SKILL.md (reported line 47)May include surrounding context.

md
`build_purchase_transaction` currently supports **MinterSetPriceV5 (ETH)** only.

| Param        | Required | Notes                                                                                                                                 |
| ------------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `projectId`  | yes      | `<contract_address>-<project_index>`                                                                                                  |
| `chainId`    | —        | Default `1`. See chain IDs below.                                                                                                     |

Whitespace Padding

Medium
Category
Prompt Injection
Confidence
70% confidence
Finding

Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Content

Scanner excerpt · SKILL.md (reported line 49)May include surrounding context.

md
| Param        | Required | Notes                                                                                                                                 |
| ------------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `projectId`  | yes      | `<contract_address>-<project_index>`                                                                                                  |
| `chainId`    | —        | Default `1`. See chain IDs below.                                                                                                     |
| `purchaseTo` | —        | Mint to a different address (gifting). Check `purchaseTo.disabled` in `get_project_minter_config` first — some projects disable this. |

Whitespace Padding

Medium
Category
Prompt Injection
Confidence
70% confidence
Finding

Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Content

Scanner excerpt · SKILL.md (reported line 50)May include surrounding context.

md
| Param        | Required | Notes                                                                                                                                 |
| ------------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `projectId`  | yes      | `<contract_address>-<project_index>`                                                                                                  |
| `chainId`    | —        | Default `1`. See chain IDs below.                                                                                                     |
| `purchaseTo` | —        | Mint to a different address (gifting). Check `purchaseTo.disabled` in `get_project_minter_config` first — some projects disable this. |

Returns `{ transaction, project, minter, price, purchaseTo, warnings }`. The `warnings` array contains non-fatal issues (paused project, sold out, complete) — always surface these to the user before they sign.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

The skill states that eligibility checks may query all wallets linked to an Art Blocks profile, but it does not clearly warn users that profile-linked wallet relationships may be looked up and exposed during the workflow. This creates a privacy risk because users may not expect a username or wallet lookup to reveal or process multiple associated addresses.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.