feat: add Sardis payment action provider

python/coinbase-agentkit/changelog.d/add-sardis-action-provider.feature.md

@@ -0,0 +1 @@
+Added new Sardis payment action provider for policy-controlled AI agent payments. The provider supports payment execution, balance checking, policy validation, policy management with natural language rules, and transaction history across Base, Polygon, Ethereum, Arbitrum, and Optimism networks.

python/coinbase-agentkit/coinbase_agentkit/__init__.py

@@ -19,6 +19,7 @@
     nillion_action_provider,
     onramp_action_provider,
     pyth_action_provider,
+    sardis_action_provider,
     ssh_action_provider,
     superfluid_action_provider,
     twitter_action_provider,
@@ -69,6 +70,7 @@
     "nillion_action_provider",
     "onramp_action_provider",
     "pyth_action_provider",
+    "sardis_action_provider",
     "ssh_action_provider",
     "superfluid_action_provider",
     "twitter_action_provider",

python/coinbase-agentkit/coinbase_agentkit/action_providers/__init__.py

@@ -27,6 +27,7 @@
 from .nillion.nillion_action_provider import NillionActionProvider, nillion_action_provider
 from .onramp.onramp_action_provider import OnrampActionProvider, onramp_action_provider
 from .pyth.pyth_action_provider import PythActionProvider, pyth_action_provider
+from .sardis.sardis_action_provider import SardisActionProvider, sardis_action_provider
 from .ssh.ssh_action_provider import SshActionProvider, ssh_action_provider
 from .superfluid.superfluid_action_provider import (
     SuperfluidActionProvider,
@@ -69,6 +70,8 @@
     "onramp_action_provider",
     "PythActionProvider",
     "pyth_action_provider",
+    "SardisActionProvider",
+    "sardis_action_provider",
     "SshActionProvider",
     "ssh_action_provider",
     "SuperfluidActionProvider",

python/coinbase-agentkit/coinbase_agentkit/action_providers/sardis/README.md

@@ -0,0 +1,60 @@
+# Sardis Action Provider
+
+The Sardis action provider enables AI agents to make **policy-controlled financial transactions** through [Sardis](https://sardis.sh) — the Payment OS for the Agent Economy.
+
+## Features
+
+- **Policy-Controlled Payments**: Every payment enforces spending rules automatically
+- **Natural Language Policies**: Set limits like "Max $50 per transaction, daily limit $500"
+- **Multi-Chain Support**: Base, Polygon, Ethereum, Arbitrum, Optimism
+- **Stablecoin Payments**: USDC, USDT, PYUSD, EURC
+- **Non-Custodial**: MPC wallets — Sardis never holds private keys
+
+## Setup
+
+1. Get an API key at [sardis.sh/dashboard](https://sardis.sh/dashboard)
+2. Create a wallet and note the wallet ID
+3. Set environment variables:
+
+```bash
+export SARDIS_API_KEY="sk_..."
+export SARDIS_WALLET_ID="wal_..."
+```
+
+## Usage
+
+```python
+from coinbase_agentkit import AgentKit, AgentKitConfig, sardis_action_provider
+
+# Add Sardis payments to your agent
+agent_kit = AgentKit(AgentKitConfig(
+    # ... wallet config ...
+    action_providers=[sardis_action_provider()]
+))
+```
+
+## Actions
+
+| Action | Description |
+|--------|-------------|
+| `sardis_pay` | Execute a policy-controlled payment |
+| `sardis_check_balance` | Check wallet balance and spending limits |
+| `sardis_check_policy` | Dry-run policy validation (does NOT execute) |
+| `sardis_set_policy` | Set spending policy with natural language |
+| `sardis_list_transactions` | View transaction history |
+
+## Supported Chains & Tokens
+
+| Chain | Tokens |
+|-------|--------|
+| Base | USDC, EURC |
+| Polygon | USDC, USDT, EURC |
+| Ethereum | USDC, USDT, PYUSD, EURC |
+| Arbitrum | USDC, USDT |
+| Optimism | USDC, USDT |
+
+## Links
+
+- [Sardis Documentation](https://sardis.sh/docs)
+- [API Reference](https://sardis.sh/docs/api)
+- [GitHub](https://github.com/sardis-labs/sardis)

python/coinbase-agentkit/coinbase_agentkit/action_providers/sardis/__init__.py

@@ -0,0 +1,8 @@
+"""Sardis payment action provider for policy-controlled AI agent payments."""
+
+from .sardis_action_provider import SardisActionProvider, sardis_action_provider
+
+__all__ = [
+    "SardisActionProvider",
+    "sardis_action_provider",
+]

python/coinbase-agentkit/coinbase_agentkit/action_providers/sardis/constants.py

@@ -0,0 +1,13 @@
+"""Constants for Sardis action provider."""
+
+SARDIS_API_BASE_URL = "https://api.sardis.sh/api/v2"
+
+SUPPORTED_TOKENS = ["USDC", "USDT", "PYUSD", "EURC"]
+
+SUPPORTED_CHAINS = {
+    "base": {"chain_id": "8453", "tokens": ["USDC", "EURC"]},
+    "polygon": {"chain_id": "137", "tokens": ["USDC", "USDT", "EURC"]},
+    "ethereum": {"chain_id": "1", "tokens": ["USDC", "USDT", "PYUSD", "EURC"]},
+    "arbitrum": {"chain_id": "42161", "tokens": ["USDC", "USDT"]},
+    "optimism": {"chain_id": "10", "tokens": ["USDC", "USDT"]},
+}