# variable-set

Sets a repository, organization, or environment GitHub Actions variable. Variables are not secret and may be visible in logs.

Agent View of the PolicyLayer registry record for `variable-set`. HTML page: https://policylayer.com/tools/io-github-dave-london-http/variable-set

## Facts

- Tool: `variable-set`
- Server: Http (`@paretools/http`) — https://policylayer.com/tools/io-github-dave-london-http.md
- Install: `npx -y @paretools/http`
- Homepage: https://github.com/Dave-London/Pare
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "variable-set",
    "arguments": {}
  }
}
```

## Why variable-set is rated Medium

This tool modifies GitHub Actions configuration by creating or updating environment variables. While the action itself is reversible (variables can be changed or deleted separately), it affects CI/CD pipeline behavior and could potentially be exploited to inject malicious values into build processes, alter deployment parameters, or expose sensitive information through variable usage in workflows.

From the tool's own definition: "Tool description states it 'Sets a repository, organization, or environment GitHub Actions variable,' which is a create/modify operation. The note that 'Variables are not secret and may be visible in logs' indicates data modification without deletion."

## Use case

AI agents use variable-set to create or update resources in Http, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Http environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Http:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "variable-set": {
      "limits": [
        {
          "counter": "variable-set_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Http (201)

- `branch` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/branch.md
- `clean` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/clean.md
- `compose-down` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/compose-down.md
- `remove` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/remove.md
- `reset` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/reset.md
- `secret-delete` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/secret-delete.md
- `tag` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/tag.md
- `variable-delete` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/variable-delete.md
- `workspace` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/workspace.md
- `worktree` — Destructive — https://policylayer.com/tools/io-github-dave-london-http/worktree.md
- `add` — Execute — https://policylayer.com/tools/io-github-dave-london-http/add.md
- `add-package` — Execute — https://policylayer.com/tools/io-github-dave-london-http/add-package.md
- `ansible-galaxy` — Execute — https://policylayer.com/tools/io-github-dave-london-http/ansible-galaxy.md
- `ansible-playbook` — Execute — https://policylayer.com/tools/io-github-dave-london-http/ansible-playbook.md
- `api` — Execute — https://policylayer.com/tools/io-github-dave-london-http/api.md
- `apply` — Execute — https://policylayer.com/tools/io-github-dave-london-http/apply.md
- `audit` — Execute — https://policylayer.com/tools/io-github-dave-london-http/audit.md
- `bazel` — Execute — https://policylayer.com/tools/io-github-dave-london-http/bazel.md
- `biome-check` — Execute — https://policylayer.com/tools/io-github-dave-london-http/biome-check.md
- `bisect` — Execute — https://policylayer.com/tools/io-github-dave-london-http/bisect.md
- `black` — Execute — https://policylayer.com/tools/io-github-dave-london-http/black.md
- `build` — Execute — https://policylayer.com/tools/io-github-dave-london-http/build.md
- `bundle-exec` — Execute — https://policylayer.com/tools/io-github-dave-london-http/bundle-exec.md
- `bundle-install` — Execute — https://policylayer.com/tools/io-github-dave-london-http/bundle-install.md
- `check` — Execute — https://policylayer.com/tools/io-github-dave-london-http/check.md
- `cherry-pick` — Execute — https://policylayer.com/tools/io-github-dave-london-http/cherry-pick.md
- `clippy` — Execute — https://policylayer.com/tools/io-github-dave-london-http/clippy.md
- `cmake` — Execute — https://policylayer.com/tools/io-github-dave-london-http/cmake.md
- `compose-build` — Execute — https://policylayer.com/tools/io-github-dave-london-http/compose-build.md
- `compose-up` — Execute — https://policylayer.com/tools/io-github-dave-london-http/compose-up.md
- …and 171 more: https://policylayer.com/tools/io-github-dave-london-http.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-dave-london-http · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-dave-london-http