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Zapier exposed actions as MCP tools via a generic action runner.
About
Zapier exposed actions as MCP tools via a generic action runner.
Security Report
actionbridge is a clean, well-scoped Zapier exposed-actions runner. Authentication is a required ZAPIER_API_KEY sent as a Bearer token, IDs are URL-encoded, and no code execution, shell use, or file access was found. The main points to note are that the ZAPIER_API_BASE_URL override would send the key to any host it is set to, and that execute_action can trigger side-effecting actions in connected apps without a confirmation step. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
8 files analyzed · 9 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
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What You'll Need
Set these up before or after installing:
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-cloudcorprecords-actionbridge": {
"env": {
"ZAPIER_API_KEY": "your-zapier-api-key-here"
},
"args": [
"-y",
"@reneturcios/actionbridge"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
actionbridge
Zapier exposed actions as MCP tools, talking to the documented Zapier exposed-actions (NLA) API. actionbridge is a clean-room generic action-runner core, under a new name: fresh code, no copied branding.
Special case, stated plainly: Zapier's surface is thousands of per-app actions behind a hosted per-user MCP endpoint; per-app action parity is NOT enumerable and is NOT claimed. actionbridge is a generic runner over whatever actions the key's account has exposed. It does not reproduce Zapier's hosted MCP endpoint, its per-user URL/key embedding, or any specific app's action catalogue.
Tools (generic runner core, 8)
list_actions, search_actions, get_action, execute_action,
list_action_apps, describe_action_inputs,
validate_action_params, get_execution_result.
Not included, by design: every specific app's action catalogue (not enumerable), Zap/Zaps management, folders, Zap history UI surfaces, app connections admin, and the hosted MCP endpoint itself.
Setup
Create a Zapier API key for the exposed-actions API and set it:
export ZAPIER_API_KEY=...
Optionally override the API base with ZAPIER_API_BASE_URL
(default https://nla.zapier.com/api/v1). Without the key, every
tool call fails with an error naming the missing variable.
CLI
npx @reneturcios/actionbridge list_actions
npx @reneturcios/actionbridge execute_action '{"action_id":"123","instructions":"Send it"}'
npx @reneturcios/actionbridge mcp # stdio MCP server
Each tool name is a subcommand taking one JSON object argument.
MCP client config
{
"mcpServers": {
"actionbridge": {
"command": "npx",
"args": ["-y", "@reneturcios/actionbridge", "mcp"],
"env": { "ZAPIER_API_KEY": "..." }
}
}
}
Docker
docker run -i -e ZAPIER_API_KEY ghcr.io/cloudcorprecords/actionbridge
Development
npm install
npm run build
npm test
License
MIT
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