# coldstar-agent-signer

> coldstar-agent-signer — expertvagabond-coldstar-agent-signer. Use this tool when you need to securely sign transactions for AI agents on the Solana network, leveraging policy-gated and air-gap-rooted signing to protect root keys. It solves the problem of secure key management, providing a drop-in BaseWallet solution for the Solana Agent Kit. The tool takes in transaction data and outputs securely signed transactions, ideal for use cases requiring high security and compliance.

Canonical page: https://skillsregistry.net/skills/expertvagabond-coldstar-agent-signer  
JSON: https://api.skillsregistry.net/v1/skills/expertvagabond-coldstar-agent-signer

## Description

Policy-gated, air-gap-rooted signing for AI agents on Solana. Drop-in BaseWallet for Solana Agent Kit. The agent never holds the root key.

## Trust

- **Trust score (0–1):** 0.88
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/ExpertVagabond/coldstar-agent-signer)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "expertvagabond-coldstar-agent-signer"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/expertvagabond-coldstar-agent-signer` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/expertvagabond-coldstar-agent-signer/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt