# Hilt Pay Agent Gateway (MCP + A2A)

**Canonical:** https://apis.io/apis/hilt-so/agent-gateway/  
**Provider:** Hilt — https://apis.io/providers/hilt-so/  
**Base URL:** https://api.hilt.so/mcp  
**Documentation:** https://docs.hilt.so/developers/agent-setup

Hilt Pay Agent Gateway (MCP + A2A) is one of 4 APIs that [Hilt](https://apis.io/providers/hilt-so/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include MCP, A2A, Agentic Commerce, x402, and Solana. The published artifact set on APIs.io includes API documentation.

Hosted MCP server at https://api.hilt.so/mcp (streamable HTTP, protocol 2025-06-18, server Hilt Pay Agent Gateway 1.1.0) exposing nine tools: free offer/catalog/pricing/quote/sandbox-bootstrap tools and x402-paid Starter/Growth/Scale plan activation plus API-key claim, each with a real JSON Schema inputSchema (tools/list answers anonymously). The same gateway publishes an A2A 0.3.0 agent card at /.well-known/agent-card.json (four skills) with a JSON-RPC endpoint at /a2a/jsonrpc and a second Agentverse transport at /agentverse/a2a. Listed on Glama and Smithery.

## Machine-readable artifacts (9)

- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/hilt-so/refs/heads/main/mcp/hilt-so-mcp.yml
- **MCPServer** — https://api.hilt.so/mcp
- **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/hilt-so/refs/heads/main/mcp/hilt-so-tool-crosswalk.yml
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/hilt-so/refs/heads/main/a2a/hilt-so-a2a.yml
- **AgentCard** — https://api.hilt.so/.well-known/agent-card.json
- **Documentation** — https://docs.hilt.so/developers/agent-builder-kit
- **Documentation** — https://www.hilt.so/agent-discovery-standard
- **Plans** — https://raw.githubusercontent.com/api-evangelist/hilt-so/refs/heads/main/plans/hilt-so-plans-pricing.yml
- **AgentSkill** — https://raw.githubusercontent.com/api-evangelist/hilt-so/refs/heads/main/skills/_index.yml

## Other Hilt APIs (3)

- [Hilt API (Pay API + Workspace)](https://apis.io/apis/hilt-so/hilt-pay-api/)
- [Hilt Solana Transaction Evidence API](https://apis.io/apis/hilt-so/transaction-evidence/)
- [Hilt PayMe MCP Connector](https://apis.io/apis/hilt-so/payme-mcp/)

## Tags

MCP, A2A, Agentic Commerce, x402, Solana, USDC

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/hilt-so/agent-gateway/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/hilt-so/.