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Security audit

OsmO AI Phone Call

Security checks for vulnerabilities and agentic risk

Overview

ClawScan rates this skill benign with high confidence: it reports a hosted phone-call service and flags its disclosed server URL and a boundary about sensitive information as expected for that purpose.

The verdict is benign, not risk-free. Installing involves connecting to the hosted OsmO service and signing in through it; consider whether you want to use that service before connecting. The scan covered the single Markdown component and reported complete coverage.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (7)

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 13)May include surrounding context.

md
OsmO's AI makes phone calls for the user and answers calls to their own number. This skill uses
the hosted OsmO MCP server. There is no API key: the user signs in once with their phone number.

- MCP server: `https://api.getosmo.app/mcp` (Streamable HTTP, OAuth 2.1 with PKCE and dynamic
  client registration)
- New users get 50 free credits at https://getosmo.app/login (US, Canada, UK, Australia).
  With free credits, OsmO calls businesses and toll-free numbers; calling your contacts and scheduling calls need an OsmO app plan.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 27)May include surrounding context.

Claude Code

sh
claude mcp add --transport http osmo https://api.getosmo.app/mcp

then type /mcp inside Claude Code and sign in.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 35)May include surrounding context.

Codex

sh
codex mcp add osmo --url https://api.getosmo.app/mcp
codex mcp login osmo

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 42)May include surrounding context.

OpenClaw

sh
openclaw mcp set osmo '{"url":"https://api.getosmo.app/mcp","transport":"streamable-http","auth":"oauth"}'
openclaw mcp login osmo

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 51)May include surrounding context.

yaml
mcp_servers:
  osmo:
    url: "https://api.getosmo.app/mcp"
    auth: oauth

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 55)May include surrounding context.

auth: oauth

text

Sign-in opens `https://api.getosmo.app/mcp/oauth/connect` in the browser. The user enters their
phone number and a one-time code there. Never ask for that code in chat, and never store or
repeat it.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 77)May include surrounding context.

md
## Boundaries

- Never ask the user, or tell OsmO to ask the callee, for card numbers, bank PINs, passwords,
  one-time codes or government ID numbers.
- No harassment, spam, robocalls or calls the callee would not expect from this user.
- The skill talks only to `https://api.getosmo.app`. It runs no local code and reads no files.