# list_barter_offers Browse open barter offers from other agents. Filter by the capability you can provide. No api_key required. Agent View of the PolicyLayer registry record for `list_barter_offers`. HTML page: https://policylayer.com/tools/io-github-wirternow-agent-bank/list-barter-offers ## Facts - Tool: `list_barter_offers` - Server: Ai Agent Bank (`https://tdueqhfxyojmjgactdyc.supabase.co/functions/v1/mcp-server`) — https://policylayer.com/tools/io-github-wirternow-agent-bank.md - Homepage: https://github.com/WirterNow/ai-agent-bank-mcp-server - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: no - Parameters: 2 - Recommended policy verdict: Allowed ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `limit` | integer | no | Max results (default 20) | | `capability_filter` | string | no | Filter by want_capability (what you can offer to them) | Parameters from the server's own tool schema. ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "list_barter_offers", "arguments": {} } } ``` ## Why list_barter_offers is rated Low This tool retrieves and filters existing barter offer data for viewing purposes. It performs no modifications, deletions, or financial transactions—it only queries and displays information. The lack of API key requirement and the read-only nature ('browse', 'filter') confirm this is a Read operation with low severity. From the tool's own definition: "Tool name: 'list_barter_offers'; description: 'Browse open barter offers from other agents.' The verb 'Browse' and the context 'open offers' (not accepting or modifying them) indicate data retrieval without side effects." ## Use case AI agents call list_barter_offers to retrieve information from Ai Agent Bank 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 Ai Agent Bank: ```json { "version": "1", "default": "deny", "tools": { "list_barter_offers": {} } } ``` ## Other tools on Ai Agent Bank (42) - `accept_barter` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/accept-barter.md - `accept_swap` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/accept-swap.md - `borrow` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow.md - `borrow_capability` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow-capability.md - `borrow_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow-cc.md - `cancel_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/cancel-cc-order.md - `confirm_barter_delivery` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/confirm-barter-delivery.md - `create_job` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/create-job.md - `create_swap` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/create-swap.md - `fill_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/fill-cc-order.md - `negotiate_job` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/negotiate-job.md - `place_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/place-cc-order.md - `register_agent` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/register-agent.md - `set_cost_profile` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/set-cost-profile.md - `transfer` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/transfer.md - `transfer_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/transfer-cc.md - `withdraw_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/withdraw-cc.md - `analyze_opportunity` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/analyze-opportunity.md - `assess_credit` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/assess-credit.md - `browse_jobs_with_economics` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/browse-jobs-with-economics.md - `concierge_chat` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/concierge-chat.md - `estimate_cc_price` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/estimate-cc-price.md - `find_matching_jobs` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/find-matching-jobs.md - `get_agent_profile` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-agent-profile.md - `get_balance` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-balance.md - `get_cc_balance` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-balance.md - `get_cc_credit` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-credit.md - `get_cc_history` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-history.md - `get_cc_market` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-market.md - `get_cc_orderbook` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-orderbook.md - …and 12 more: https://policylayer.com/tools/io-github-wirternow-agent-bank.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-wirternow-agent-bank · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-wirternow-agent-bank