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Security audit

Agent Signet ID

Security checks for vulnerabilities and agentic risk

Overview

This skill is an API reference for Signet and its external calls, API key use, and agent scoring data are disclosed and aligned with that purpose.

Install only if you intend to use Signet. Keep SIGNET_API_KEY secret, review what agent configuration and transaction metadata you send, and avoid including sensitive prompts, credentials, PII, file contents, or internal details in reports.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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 (9)

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
Signet is the trust scoring platform for autonomous AI agents. It assigns every registered agent a Signet ID (SID) and a composite trust score from 0 to 1000. Platforms query this score before allowing agents to transact.

Base URL: `https://api.agentsignet.com`
All routes are also available at `/v1/` (e.g., `https://api.agentsignet.com/v1/register/self`).
All responses use JSON with snake_case field names.
All responses include an `X-Request-Id` header (UUID) for debugging.
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.