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AgentToolbox MCP Wirecheck
x402
AgentToolbox MCP Wirecheck is a paid API for AI agents from agnttoolbx.agenttoolbox2026.workers.dev, paid per call via x402, $0.01/call, status down (last checked 2026-10-15).
Validates and inspects a Cloudflare Workers MCP endpoint by performing anonymous read-only protocol discovery against it, checking protocol version compatibility and wire-level conformance.
Price / call$0.01
Success—
StatusDown
How this service works
Useful tools for agents. Small requests. Concrete results.
Output
Returns a JSON report describing the MCP endpoint's wire-level conformance, including which protocol versions are supported, what capabilities were discovered via anonymous read-only MCP discovery, and any protocol errors or mismatches detected.
Example use cases
Pre-launch MCP compliance check
“Before I launch my new Cloudflare Worker, can you run a wirecheck on https://myproject.myservice.workers.dev/mcp to make sure it's properly handling MCP protocol discovery for versions 2025-11-25 and 2026-07-28? I own it and authorize the check.”
Debugging broken MCP discovery
“My MCP server at https://debug.myagents.workers.dev/mcp isn't responding to discovery requests correctly — can you wirecheck it against protocol version 2025-11-25 so I can see what's going wrong? I'm authorized to run this.”
Verifying protocol version upgrade
“I just upgraded my MCP worker at https://prod.toolsuite.workers.dev/mcp to support the 2026-07-28 protocol — can you wirecheck it against both 2025-11-25 and 2026-07-28 to confirm the new version is wired up properly? I own this endpoint.”
Technical details
Endpoint
POSThttps://agnttoolbx.agenttoolbox2026.workers.dev/v1/products/mcp-wirecheck/invoke?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate that a Cloudflare Workers-hosted MCP server is correctly implementing the MCP wire protocol and is discoverable. It is specifically designed for workers.dev MCP endpoints and enforces the URL pattern accordingly. Prefer this over generic HTTP checkers when you need protocol-level MCP conformance results rather than just reachability.
Side effects
- Endpoint URL does not match the required workers.dev/mcp pattern — returns validation error
- Caller does not provide the required authority declaration — request rejected
- Specified protocol versions not in the allowed enum (2025-11-25, 2026-07-28) — schema validation failure
- Target MCP endpoint is unreachable or returns non-MCP responses — probe failure reported
- Payment amount does not match quoted price — payment rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| version | string | |
| agent_id | string | |
| quote_id | string | |
| prepared_id | string | |
| review_secret_hash | string | Optional SHA-256 hex of caller-kept atbr_ secret (32 random bytes). Bound to this paid request; never send the raw secret here. |
| payment_amount_atomic | string | Canonical decimal USDC atomic-unit string (6 decimals). Protocol uint256 maximum 115792089237316195423570985008687907853269984665640564039457584007913129639935. No business maximum. Product minimum: 10000. Must equal the exact quoted/signed amount. |
| max_charge_usdc_atomic | — | Caller spending cap. Canonical decimal string recommended; safe integer numbers accepted for compatibility. Does not select an amount. |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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