Agentic Payments Protocol Comparator — OpenChainGraph compute node (routing_policy). Runs deterministically in-browser; zero PII, zero egress. Exports an AP2 artifact with execution_hash for chain provenance. Output feeds: art-16-google-ap2-mandate-builder, art-23-visa-trusted-agent-protocol-insp...
AI agents call compare_agentic_rail_protocols to retrieve information from Ainumbers Mcp Apps without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
compute | string | — | Compute mode (v0.4 Compute Binding). "auto" (default) = server for gpu:false nodes with registered kernels; "server" = force server-side; "browser" = always ret |
parent_hashes | array | — | execution_hash values from upstream ChainGraph AP2 artifacts to chain from (sets chain.parent_hashes in the export). |
parent_tool_ids | array | — | tool_id values matching parent_hashes, in the same order. |
policy_parameters | object | — | Input parameters for this tool's decision function. For gpu:false nodes with a registered kernel, these are computed server-side when compute is "auto" or "serv |
Parameters from the server's own tool schema.
This is a comparison and artifact export tool that queries/analyzes payment protocol specifications and generates documentation. It reads protocol data and outputs structured artifacts for downstream tools, but does not execute payments, modify state, delete data, or trigger external operations. The emphasis on deterministic in-browser execution and zero egress confirms it performs passive analysis only.
From the tool's definition Tool name and description indicate it 'Compares' agentic payment protocols and 'Exports an AP2 artifact' — purely informational/analytical operations.
Attacks that exploit this kind of access
Agentic Payments Protocol Comparator — OpenChainGraph compute node (routing_policy). Runs deterministically in-browser; zero PII, zero egress. Exports an AP2 artifact with execution_hash for chain provenance. Output feeds: art-16-google-ap2-mandate-builder, art-23-visa-trusted-agent-protocol-inspector, art-24-mastercard-agentic-token-builder, art-25-a2a-agent-card-validator, art-26-x402-payload-decoder-flow-simulator, ptg-01-ap2-prompt-template-generator. Open at: https://ainumbers.co/chaingraph/art-22-agentic-payments-protocol-comparator.html. It is categorised as a Read tool in the Ainumbers Mcp Apps MCP Server, which means it retrieves data without modifying state.
compare_agentic_rail_protocols accepts 4 parameters: compute, parent_hashes, parent_tool_ids, policy_parameters. The full parameter table on this page comes from the server's own tool schema.
Register the Ainumbers Mcp Apps MCP server in PolicyLayer and add a rule for compare_agentic_rail_protocols: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Ainumbers Mcp Apps. Nothing to install.
compare_agentic_rail_protocols is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the compare_agentic_rail_protocols rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for compare_agentic_rail_protocols. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
compare_agentic_rail_protocols is provided by the Ainumbers Mcp Apps MCP server (postoaklabs/ainumbers-mcp-apps). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →