Versioned security assessment

Report ID: SA-6A1D1B9E

7/10/2026, 12:00:46 AM

nansen-prediction-markets security assessment v1

Skill Security Certification Report

Audit History
Audit model: codex Historical report
Skill name
nansen-prediction-markets
Version
v1
Maintainer
internet-court
Source
github.com/internet-court/internet-court-skill/tree/main/vendored/nansen/nansen-prediction-markets
Coverage
1 Files scanned · 48 Lines analyzed
Policy version
Unavailable

Highest confirmed finding severity

High

1 confirmed security finding requires attention.

Installation context

Historical evidence

This report may not describe the currently installable artifact. Open the current Skill page for install guidance.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

The skill contains no prompt injection text or hidden authority claims. Several markdown backtick detections are false positives, but the skill does execute Nansen CLI screeners and requires NANSEN_API_KEY. The main risk is exposing a sensitive API credential to an installed third-party CLI.

Report position

Historical report

Open audit history before using this report to install.

Audit attestation

Not attestable

The required immutable binding is incomplete.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

1 Files scanned · 48 Lines analyzed

5 items shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Binding unavailable

  2. Artifact

    Identity incomplete

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Not recorded by this audit

Network access

May connect to external services.

Not recorded by this audit

Filesystem access

May read or write local files.

Not recorded by this audit

Env variables

May read values from the process environment.

Observed in 2 evidence locations

External commands

May invoke commands or programs outside the Skill.

Observed in 5 evidence locations

Capability review items (4)
High
SKILL.md:8
Generic API/secret keys
- NANSEN_API_KEY
Line 8 declares NANSEN_API_KEY as a required environment variable. This is a sensitive credential that will be available when the external CLI runs.
High
SKILL.md:11
Generic API/secret keys
primaryEnv: NANSEN_API_KEY
Line 11 marks NANSEN_API_KEY as the primary environment credential. The use appears legitimate, but it increases credential exposure risk.
Medium
SKILL.md:21
Ruby/shell backtick execution
All commands: `nansen research prediction-market <sub> [options]` (alias: `nansen research pm <sub>`
Line 21 documents the Nansen CLI command pattern that the agent is expected to run. The command is bounded to nansen, but it is still external command execution.
Medium
SKILL.md:25-43
Ruby/shell backtick execution
```bash
The fenced block from lines 25 to 43 contains concrete nansen research commands intended for execution. The commands are narrow, but they run an installed external CLI.

Risk findings

Confirmed security concerns are separated from items that still need review.

Confirmed security concerns (1)

RISK-001 High
SKILL.md:8-16
Third-Party CLI Receives API Credential
The skill installs nansen-cli, permits Bash(nansen:*), and requires NANSEN_API_KEY. This gives an installed third-party CLI access to a sensitive user credential during execution.
The metadata explicitly combines a required API key, a node package install, and allowed Nansen Bash execution. No malicious intent is shown, but the trust-boundary risk is clear.

Remediation

Suggested fixes recorded by this audit. Applying them is the maintainer’s responsibility.

  1. FIX-001
    High
    Sensitive API key is required for the skill.
    Do not print NANSEN_API_KEY in prompts, command output, logs, or examples. Pass it only through the environment used by the Nansen CLI.
  2. FIX-002
    High
    External CLI receives the configured API key.
    Pin nansen-cli to a trusted version and document the service endpoints it contacts before users provide credentials.
  3. FIX-003
    Medium
    The skill depends on shell command execution.
    Keep tool access restricted to Bash(nansen:*) and avoid adding arbitrary shell snippets or interpolated user commands.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
Unavailable
Content hash
Unavailable
Tree hash
Unavailable
Skill path
Unavailable
Audit payload hash
Unavailable

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: not_attestable