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GPT-5.5 x402 AgentCore Integration Kit
x402
GPT-5.5 x402 AgentCore Integration Kit is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).
Returns code snippets and integration guidance for connecting AI agents to the GPT-5.5 x402 gateway via AgentCore, CDP Bazaar, MCP, curl, or x402 buyer protocols
Price / call$0.006
Success—
StatusUnknown
How this service works
Low-price OpenAI-compatible GPT-5.5 chat completions and text tools over x402 USDC on Base: $0.0001 compact requests, $0.066667 true max-output requests, no subscription.
Output
A JSON object with ok=true, a tool name ('x402AgentCoreIntegrationKit'), and a summary string describing generated integration snippets for AgentCore Gateway, CDP Bazaar, MCP, curl, and x402 buyer code — ready to drop into an agent or script that pays per GPT-5.5 request via x402 USDC.
Example use cases
Example prompt
“Generate an AgentCore integration kit for the GPT-5.5 x402 gateway at https://gpt55.558686.xyz — my agent is called 'ResearchBot', my buyer goal is 'summarize documents', and I want to cap spending at $0.006 USDC per call.”
Technical details
Endpoint
POSThttps://gpt55.558686.xyz/v1/tools/x402-agentcore-integration-kitWhen to prefer
Choose this endpoint when you need ready-to-use integration scaffolding — AgentCore, MCP, CDP Bazaar, curl, or x402 buyer code — for connecting to the GPT-5.5 x402 gateway, rather than making a direct chat/text completion call. Ideal for agent developers bootstrapping payment-aware LLM integrations quickly without writing boilerplate x402 protocol code from scratch.
Side effects
- Missing required 'input.type' or 'input.method' fields returns a 400 validation error
- URL or base_url exceeding 2048 characters is rejected
- Invalid max_usdc_per_call outside 0.000001–100 range returns validation error
- x402 payment not provided or incorrect amount returns 402 Payment Required
- Service temporarily unavailable returns 5xx error
- Query params with additional unexpected properties are rejected due to additionalProperties:false
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"base_url": "https://gpt55.558686.xyz",
"agentName": "ResearchBot",
"buyer_goal": "summarize documents",
"max_usdc_per_call": 0.006
}
},
"output": {
"type": "object"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"ok": true,
"mcp": {
"sseUrl": "https://gpt55.558686.xyz/mcp/sse",
"configUrl": "https://gpt55.558686.xyz/mcp/config",
"remoteUrl": "https://gpt55.558686.xyz/mcp",
"clientConfig": {
"mcpServers": {
"gpt-5-5-x402-api-gateway": {
"url": "https://gpt55.558686.xyz/mcp",
"type": "streamable-http"
}
}
},
"serverJsonUrl": "https://gpt55.558686.xyz/server.json"
},
"tool": "x402AgentCoreIntegrationKit",
"x402": {
"asset": "Base USDC",
"network": "eip155:8453",
"receiver": "0x1f0130669ca6fd02e025a984cc038f139df19a2f",
"discoveryUrl": "https://gpt55.558686.xyz/.well-known/x402",
"buyerGuideUrl": "https://gpt55.558686.xyz/buyer-guide.json",
"livePricesUrl": "https://gpt55.558686.xyz/x402/live-prices.json",
"maxUsdcPerCall": 0.006,
"preferredEndpoint": "https://gpt55.558686.xyz/v1/x402-ping",
"serviceMetadataUrl": "https://gpt55.558686.xyz/.well-known/x402-service"
},
"baseUrl": "https://gpt55.558686.xyz",
"commands": {
"mcpConfig": "curl -s https://gpt55.558686.xyz/mcp/config",
"livePrices": "curl -s https://gpt55.558686.xyz/x402/live-prices.json",
"unpaidQuote": "curl -i -X POST https://gpt55.558686.xyz/v1/x402-ping -H \"content-type: application/json\" -d '{}'",
"bazaarLiveMetadata": "curl -s https://gpt55.558686.xyz/.well-known/x402"
},
"agentCore": {
"agentName": "researchbot",
"routeHints": [
{
"path": "/.well-known/x402",
"method": "GET",
"purpose": "discover live payment requirements and resource metadata before payment"
},
{
"path": "/x402/live-prices.json",
"method": "GET",
"purpose": "compare live price caps against any cached marketplace price"
},
{
"path": "/mcp/config",
"method": "GET",
"purpose": "load remote MCP server configuration for agent tool routing"
},
{
"path": "/v1/chat/completions",
"method": "POST",
"purpose": "compact OpenAI-compatible GPT-5.5 chat completion"
},
{
"path": "/v1/chat/completions/max",
"method": "POST",
"purpose": "true max-output GPT-5.5 generation when the agent needs a large answer"
}
],
"gatewayName": "gpt-5-5-x402-api-gateway-agentcore-gateway",
"spendPolicy": {
"firstPaidCheck": "https://gpt55.558686.xyz/v1/x402-ping",
"maxUsdcPerCall": 0.006,
"preferUptoScheme": true,
"requireLiveQuoteBeforePayment": true
},
"discoverySource": "CDP x402 Bazaar",
"recommendedSearchQueries": [
"GPT-5.5 x402 API Gateway",
"gpt55.558686.xyz",
"gpt-5.5 x402",
"openai compatible chat",
"low cost llm",
"x402 MCP integration",
"Base USDC paid API"
]
},
"agentName": "ResearchBot",
"buyerGoal": "summarize documents",
"cdpBazaar": {
"buyerWarning": "Treat the live 402 quote as authoritative when Bazaar search results show stale indexed prices.",
"discoveryUrl": "https://api.cdp.coinbase.com/platform/v2/x402/discovery",
"serviceSearchTerms": [
"GPT-5.5 x402 API Gateway",
"gpt55.558686.xyz",
"gpt-5.5",
"x402",
"Base USDC"
]
},
"fetchedAt": "2026-06-19T05:58:14.842Z",
"serviceName": "GPT-5.5 x402 API Gateway",
"verificationChecklist": [
"Search Bazaar by service name, host, model, and x402 tags; record the indexed resource price and last updated time.",
"Fetch the service /.well-known/x402 and /x402/live-prices.json immediately before paying.",
"Reject or re-quote if the indexed price exceeds the live quote or the client spend cap.",
"Run the lowest-cost no-upstream endpoint first to prove wallet, facilitator, and settlement behavior.",
"Only route production agent tasks to model endpoints after one successful low-cost settlement proof."
]
}Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "x402AgentCoreIntegrationKit",
"summary": "Generate AgentCore Gateway, CDP Bazaar, MCP, curl, and x402 buyer integration snippets using x402 USDC payment"
}
}Tags
x402
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