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AgentDiet MCP Gateway – Injection Firewall Endpoint
x402
AgentDiet MCP Gateway – Injection Firewall Endpoint is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Acts as a broker/router gateway that validates and filters HTTP requests before forwarding them to MCP servers, x402 APIs, and A2A agents, returning a compressed intelligence payload with ROI proof.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.
Output
A JSON object containing a status field ('ok' on success), a data object with the downstream response payload, and an roi_proof object showing compression_ratio_pct (e.g. 91.4%), indicating how efficiently the gateway processed and compressed the result.
Example use cases
Filtered query to MCP server fleet
“Send my text query 'get me the top 5 trending GitHub repos today' through the AgentDiet injection firewall using a GET request, and return the compressed result with the compression ratio proof.”
Safe A2A request brokering
“I need to safely broker a POST request to an A2A agent with the text 'analyze my portfolio risk' — run it through the MCP gateway firewall first so I know it's been validated before hitting the downstream agent.”
x402 API access with payment proof
“Use the AgentDiet gateway to fire off a GET request with query text 'fetch current USDC price on Base' through the injection firewall and show me the status, data, and ROI compression proof I get back.”
Technical details
Endpoint
GEThttps://mcp-gateway.agentdiet.dev/v1/injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single deterministic broker that validates, filters, and routes requests to any of 31,000+ MCP servers or x402 APIs with built-in injection protection and on-chain USDC payment settlement on Base. Prefer it over direct API calls when security (injection firewall), payment automation (x402/L402), and compression efficiency (ROI proof) are priorities, or when you need a unified gateway rather than managing individual MCP server connections.
Side effects
- Missing required 'input' object returns schema validation error
- Invalid method enum value (not GET or POST) causes request rejection
- Downstream MCP server or agent unavailable returns error status
- Payment of 0.005 USDC not settled causes 402 Payment Required response
- Malformed queryParams.text causes upstream parsing failure
- Rate limiting or firewall injection detection blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"status": "ok",
"roi_proof": {
"compression_ratio_pct": 91.4
}
}
}Tags
x402
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