# list_contracts_by_trait

List contracts that implement a specific trait

Agent View of the PolicyLayer registry record for `list_contracts_by_trait`. HTML page: https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/list-contracts-by-trait

## Facts

- Tool: `list_contracts_by_trait`
- Server: Stacks AI MCP Server (`stack-ai-mcp/stacks-mcp-server`) — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server.md
- Homepage: https://github.com/Stack-AI-MCP/stacks-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why list_contracts_by_trait is rated Low

This tool retrieves or queries information about contracts matching specific criteria. It performs no mutations, deletions, or financial operations. The verb 'list' and the passive information retrieval nature of the operation clearly place it in the Read category. Severity is low as misuse would only result in information disclosure, not irreversible changes or financial harm.

From the tool's own definition: "Tool name 'list_contracts_by_trait' and description 'List contracts that implement a specific trait' indicate a query/retrieval operation with no side effects."

## Use case

AI agents call list_contracts_by_trait to retrieve information from Stacks AI MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Stacks AI MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_contracts_by_trait": {}
  }
}
```

## Other tools on Stacks AI MCP Server (199)

- `arkadiko_burn_usda` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-burn-usda.md
- `bitflow_cancel_group_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-cancel-group-order.md
- `bitflow_cancel_keeper_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-cancel-keeper-order.md
- `charisma_cancel_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-cancel-order.md
- `charisma_revoke_api_key` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-revoke-api-key.md
- `alex_execute_swap_3hop` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-3hop.md
- `arkadiko_create_proposal` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-create-proposal.md
- `broadcast_transaction` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/broadcast-transaction.md
- `charisma_execute_intent` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-intent.md
- `charisma_execute_order` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-order.md
- `alex_execute_swap` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap.md
- `alex_execute_swap_2hop` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-2hop.md
- `alex_execute_swap_4hop` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-4hop.md
- `arkadiko_add_liquidity` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-add-liquidity.md
- `arkadiko_claim_staking_rewards` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-claim-staking-rewards.md
- `arkadiko_close_vault` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-close-vault.md
- `arkadiko_complete_cdp_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-complete-cdp-workflow.md
- `arkadiko_complete_governance_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-complete-governance-workflow.md
- `arkadiko_create_vault` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-create-vault.md
- `arkadiko_stake_diko` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-stake-diko.md
- `arkadiko_swap_tokens` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-swap-tokens.md
- `bitflow_create_group_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-create-group-order.md
- `bitflow_create_keeper_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-create-keeper-order.md
- `bitflow_execute_btc_to_sbtc_keeper_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-execute-btc-to-sbtc-keeper-order.md
- `bitflow_execute_token_swap_with_keeper` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-execute-token-swap-with-keeper.md
- `bitflow_setup_dca_orders` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-setup-dca-orders.md
- `charisma_complete_swap_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-complete-swap-workflow.md
- `charisma_create_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-create-order.md
- `charisma_execute_multihop_swap` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-multihop-swap.md
- `granite_add_collateral` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/granite-add-collateral.md
- …and 169 more: https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server.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=stack-ai-mcp-stacks-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/stack-ai-mcp-stacks-mcp-server