# MCP WireCheck: synthetic examples Created by: AgentToolbox (first-party). Version: 0.1.1. Beta. [Tool guide](/tools/mcp-wirecheck) · [Success checks](/tools/mcp-wirecheck/checks) · [Synthetic examples](/tools/mcp-wirecheck/examples) · [Reviews](https://agi.agenttoolbox2026.workers.dev/products/mcp-wirecheck/reviews) · [Private feedback](/feedback?tool=mcp-wirecheck) Free offline fixtures; no tool runs, source fetches, endpoint probes or payments occur here. They are examples of the contract, not customer reviews or evidence of live demand. input_valid means the full runtime accepts the input, including host, schema-subset and seed constraints. [Canonical fixture JSON](https://agi.agenttoolbox2026.workers.dev/v1/products/mcp-wirecheck/examples) ```json { "api_version": "1", "fixture_version": "1", "product_id": "mcp-wirecheck", "version": "0.1.1", "publisher": "AgentToolbox", "provenance": "first_party_synthetic_fixture", "example_kind": "offline_contract_examples", "execution": "none", "payment": { "status": "not_required", "amount_settled_atomic": "0" }, "fixed_clock": "2026-10-07T00:00:00.000Z", "interpretation": "Static authored examples, not live remote observations, payment verification, customer outcomes or proof of usefulness. Fixture URLs identify mocked responses; do not invoke the live service with these fixture inputs.", "expected_format": "input_valid means the complete handler input validation passed, including runtime restrictions such as supported hosts, schema keywords and a valid seed. It is not just validation against the published JSON Schema, which cannot express every runtime restriction. outcome_qualifies tests the handler success predicate, not a payment. checks compare exact values at RFC 6901 JSON Pointers into the output; unlisted fields are not asserted. failure_reason names the handler failure code when no output is returned.", "contract_path": "/v1/products/mcp-wirecheck", "criteria_path": "/v1/products/mcp-wirecheck/criteria", "purpose": "Inspect a bounded discovery/tools-list compatibility matrix; no tool is invoked and no conformance or security certification is implied.", "independent_check": "Read the supplied JSON-RPC response shapes and method sequence; compare with an MCP client or Inspector against a local mock. Never send fixture replay commands to a live target as part of this offline check.", "real_input_preview": { "supported": false, "path": null, "scope": "A real endpoint verdict is the paid output. These fixtures send no target probes and are not a live endpoint dry run." }, "cases": [ { "id": "both_protocol_flows", "description": "The fixed old handshake and modern discovery both expose one tool. All replies here are synthetic, including those labeled with our public URL.", "input": { "endpoint": "https://agi.agenttoolbox2026.workers.dev/mcp", "protocol_versions": [ "2025-11-25", "2026-07-28" ], "authority": "I own this endpoint or am authorized to request its anonymous read-only MCP discovery." }, "fixture": { "kind": "rpc_sequence", "requests": [ { "method": "initialize", "protocol_version": "2025-11-25", "request_id": 1, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": "{\"jsonrpc\":\"2.0\",\"id\":1,\"result\":{\"protocolVersion\":\"2025-11-25\",\"capabilities\":{\"tools\":{}},\"serverInfo\":{\"name\":\"AgentToolbox offline fixture\",\"version\":\"0\"}}}" } }, { "method": "notifications/initialized", "protocol_version": "2025-11-25", "request_id": null, "response": { "status": 202, "headers": {}, "body": null } }, { "method": "tools/list", "protocol_version": "2025-11-25", "request_id": 2, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": "{\"jsonrpc\":\"2.0\",\"id\":2,\"result\":{\"tools\":[{\"name\":\"fixture_lookup\",\"inputSchema\":{\"type\":\"object\",\"properties\":{\"query\":{\"type\":\"string\"}}}}]}}" } }, { "method": "server/discover", "protocol_version": "2026-07-28", "request_id": 1, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": "{\"jsonrpc\":\"2.0\",\"id\":1,\"result\":{\"ttlMs\":0,\"cacheScope\":\"public\",\"resultType\":\"complete\",\"supportedVersions\":[\"2026-07-28\"],\"capabilities\":{\"tools\":{}}}}" } }, { "method": "tools/list", "protocol_version": "2026-07-28", "request_id": 2, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": "{\"jsonrpc\":\"2.0\",\"id\":2,\"result\":{\"ttlMs\":0,\"cacheScope\":\"public\",\"resultType\":\"complete\",\"tools\":[{\"name\":\"fixture_lookup\",\"inputSchema\":{\"type\":\"object\",\"properties\":{\"query\":{\"type\":\"string\"}}}}]}}" } } ] }, "expected": { "input_valid": true, "outcome_qualifies": true, "checks": [ { "pointer": "/checked_at", "value": "2026-10-07T00:00:00.000Z" }, { "pointer": "/request_count", "value": 5 }, { "pointer": "/complete", "value": true }, { "pointer": "/preview_supported", "value": false }, { "pointer": "/versions/0/status", "value": "compatible" }, { "pointer": "/versions/0/reason", "value": "checked_scope_passed" }, { "pointer": "/versions/0/tool_count", "value": 1 }, { "pointer": "/versions/0/pagination", "value": "complete" }, { "pointer": "/versions/1/status", "value": "compatible" }, { "pointer": "/versions/1/reason", "value": "checked_scope_passed" }, { "pointer": "/versions/1/tool_count", "value": 1 }, { "pointer": "/versions/1/pagination", "value": "complete" } ] } }, { "id": "no_tools_capability", "description": "Valid modern discovery explicitly lacks tools support. A decisive incompatibility finding is a qualifying outcome.", "input": { "endpoint": "https://agi.agenttoolbox2026.workers.dev/mcp", "protocol_versions": [ "2026-07-28" ], "authority": "I own this endpoint or am authorized to request its anonymous read-only MCP discovery." }, "fixture": { "kind": "rpc_sequence", "requests": [ { "method": "server/discover", "protocol_version": "2026-07-28", "request_id": 1, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": "{\"jsonrpc\":\"2.0\",\"id\":1,\"result\":{\"ttlMs\":0,\"cacheScope\":\"public\",\"resultType\":\"complete\",\"supportedVersions\":[\"2026-07-28\"],\"capabilities\":{}}}" } } ] }, "expected": { "input_valid": true, "outcome_qualifies": true, "checks": [ { "pointer": "/request_count", "value": 1 }, { "pointer": "/versions/0/discovery_valid", "value": true }, { "pointer": "/versions/0/status", "value": "incompatible" }, { "pointer": "/versions/0/reason", "value": "tools_capability_absent" }, { "pointer": "/versions/0/failure_location", "value": "server/discover" } ] } }, { "id": "authentication_required", "description": "A 401 yields no validated discovery and does not qualify for payment.", "input": { "endpoint": "https://agi.agenttoolbox2026.workers.dev/mcp", "protocol_versions": [ "2026-07-28" ], "authority": "I own this endpoint or am authorized to request its anonymous read-only MCP discovery." }, "fixture": { "kind": "rpc_sequence", "requests": [ { "method": "server/discover", "protocol_version": "2026-07-28", "request_id": 1, "response": { "status": 401, "headers": { "Content-Type": "text/plain" }, "body": "Fixture requires authentication." } } ] }, "expected": { "input_valid": true, "outcome_qualifies": false, "checks": [ { "pointer": "/request_count", "value": 1 }, { "pointer": "/versions/0/discovery_valid", "value": false }, { "pointer": "/versions/0/status", "value": "auth_required" }, { "pointer": "/versions/0/reason", "value": "authentication_required" } ] } }, { "id": "unsupported_endpoint", "description": "Custom domains are outside this product scope and fail input validation without any request.", "input": { "endpoint": "https://example.invalid/mcp", "protocol_versions": [ "2026-07-28" ], "authority": "I own this endpoint or am authorized to request its anonymous read-only MCP discovery." }, "fixture": { "kind": "none" }, "expected": { "input_valid": false, "outcome_qualifies": false, "checks": [] } } ] } ```