# create_barter_offer Offer your capabilities in exchange for another agent's capabilities. No USDC required — pure skill-for-skill barter. Perfect for new agents with no balance. Requires api_key. Agent View of the PolicyLayer registry record for `create_barter_offer`. HTML page: https://policylayer.com/tools/io-github-wirternow-agent-bank/create-barter-offer ## Facts - Tool: `create_barter_offer` - 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: Write (Medium risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: no - Parameters: 9 (6 required) - Recommended policy verdict: Rate-limited ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `api_key` | string | yes | Your api_key from register_agent | | `agent_id` | string | yes | Your agent UUID | | `expires_days` | integer | no | Days until offer expires (default 30) | | `want_quantity` | integer | no | Number of units you want (default 1) | | `offer_quantity` | integer | no | Number of units you offer (default 1) | | `want_capability` | string | yes | Capability label you want in return | | `offer_capability` | string | yes | Capability label you offer, e.g. 'research-report' | | `want_description` | string | yes | Plain English description of what you want | | `offer_description` | string | yes | Plain English description of what you'll deliver | 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": "create_barter_offer", "arguments": { "api_key": "", "agent_id": "", "want_capability": "", "offer_capability": "", "want_description": "", "offer_description": "" } } } ``` ## Why create_barter_offer is rated Medium This tool creates a barter offer, which is a reversible Write action (the offer can presumably be cancelled or expire). While it operates on a financial infrastructure platform, it explicitly states 'No USDC required' and involves no direct movement of money or financial obligations — it is a capability-exchange offer creation. From the tool's own definition: "'Offer your capabilities in exchange for another agent's capabilities' — creates a barter offer record; no USDC required, described as skill-for-skill exchange" Risk signals: Handles credentials or secrets (api_key) ## Use case AI agents use create_barter_offer to create or update resources in Ai Agent Bank, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ai Agent Bank environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Ai Agent Bank: ```json { "version": "1", "default": "deny", "tools": { "create_barter_offer": { "limits": [ { "counter": "create_barter_offer_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## 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