mech-server 0.8.4

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Mech Server

A CLI to create, deploy and manage Mechs — AI agents that execute tasks on-chain for payment — on the Olas Marketplace.

Note: The codebase uses the term service (from the underlying Open Autonomy framework) interchangeably with AI agent.

Quick Start

pip install mech-server
mech setup -c <chain>
mech run -c <chain>

Supported Chains

Chain	Native	OLAS Token	USDC Token	Nevermined
Gnosis	✅	✅	❌	✅
Base	✅	✅	❌	✅
Polygon	✅	✅	✅	✅
Optimism	✅	✅	❌	✅

Requirements

• Python >=3.10, <3.12
• Docker Engine + Docker Compose

Commands

Command	Description
mech setup -c <chain>	Full first-time setup: workspace, agent build, mech deployment, env config, key setup
mech add-tool <author> <name>	Scaffold a new mech tool
mech prepare-metadata -c <chain>	Recompute package fingerprints, push packages and metadata to IPFS, and write METADATA_HASH and TOOLS_TO_PACKAGE_HASH to .env
mech prepare-metadata -c <chain> --offchain-url <url>	Same as above, also sets the offchain URL in metadata and .env
mech update-metadata -c <chain>	Update the metadata hash on-chain via Safe transaction
mech run -c <chain>	Run the mech AI agent via Docker
mech stop -c <chain>	Stop a running mech AI agent

Developing a new tool

New service (no existing mech)

1. Set up the workspace and deploy the mech on-chain:

   mech setup -c <chain>
   

2. Scaffold a tool:

   mech add-tool <author> <tool_name> -d "Tool description"
   

3. Implement the tool logic in ~/.operate-mech/packages/<author>/customs/<tool_name>/<tool_name>.py. The scaffold generates a working stub with the correct structure:

   ALLOWED_TOOLS = ["tool_name"]
   
   def run(**kwargs: Any) -> MechResponse:
       prompt = kwargs.get("prompt")
       if prompt is None:
           return error_response("No prompt has been given.")
       result = do_work(prompt)
       context = None
       artifact = None
       callback = None
       return result, prompt, context, artifact, callback
   

4. If your tool requires API keys or other secrets, add them to ~/.operate-mech/.env.

5. (Optional) If your mech should serve off-chain requests over HTTP, provide a URL that routes to the mech's HTTP server (localhost:8000). This URL is included in the mech's on-chain metadata so that clients can discover it:

   mech prepare-metadata -c <chain> --offchain-url <url>
   

   Alternatively, set MECH_OFFCHAIN_URL in ~/.operate-mech/.env.<chain> and run prepare-metadata without the flag.

6. Generate and publish metadata (to IPFS), then update the on-chain registry:

   mech prepare-metadata -c <chain>
   mech update-metadata -c <chain>
   

7. Run:

   mech run -c <chain>
   

Existing service (mech already running)

1. Stop the service:

   mech stop -c <chain>
   

2. Scaffold, implement, and set any required API keys (same as steps 2–4 above).

3. Generate and publish metadata (to IPFS), then update:

   mech prepare-metadata -c <chain>
   mech update-metadata -c <chain>
   

4. Restart:

   mech run -c <chain>
   

Documentation

Find the full tutorial (tool development, publishing, sending requests) at stack.olas.network.