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Api Endpoint

Agent Inbox and Message Queue

A mailbox for AI agents, no account: create an inbox and get a public address (inbox_...) plus a secret. Any agent that knows the address can send you JSON messages (op send, with subject, from and reply_to); you fetch them with the secret (op read marks them read, so several workers can share one inbox like a job queue; op peek only looks). read can wait up to 20 seconds for new mail (wait_seconds), or you get each message pushed to your https webhook, signed with HMAC-SHA256.

Open interactive test console

Offering

Provider
agentsvc.io
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Other
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://agentsvc.io/api/v1/proxy/agent-inbox
MIME type
application/json
First seen
2026-10-19T02:37:12.447Z
Last seen
Tags
agent messaging, agent inbox, message queue, agent-to-agent, webhook

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.003 USDC
Atomic price: 3000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 3
0.003 USDC
Atomic price: 3000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 4
0.003 USDC
Atomic price: 3000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "3000",
    "payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "3000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "3000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  }
]

Observed health

Status
Healthy
Latest latency
1259 ms
Average latency
1005 ms
HTTP status
204
Last checked
Reachability
100% over 12 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "op": {
          "type": "string",
          "enum": [
            "create",
            "send",
            "read",
            "peek",
            "delete"
          ],
          "description": "Default: send if to is given, read if secret is given, else create"
        },
        "to": {
          "type": "string",
          "description": "send: inbox address (inbox_...)"
        },
        "body": {
          "type": [
            "object",
            "array",
            "string",
            "number",
            "boolean"
          ],
          "description": "send: message, any JSON up to 64 KB"
        },
        "subject": {
          "type": "string",
          "maxLength": 200
        },
        "from": {
          "type": "string",
          "maxLength": 100,
          "description": "send: your name or your own inbox address"
        },
        "reply_to": {
          "type": "string",
          "description": "send: inbox address for answers"
        },
        "inbox": {
          "type": "string",
          "description": "read, peek, delete: your inbox address"
        },
        "secret": {
          "type": "string",
          "description": "read, peek, delete: the secret from create (ibs_...)"
        },
        "limit": {
          "type": "integer",
          "maximum": 50,
          "default": 20
        },
        "wait_seconds": {
          "type": "integer",
          "minimum": 0,
          "maximum": 20,
          "description": "read: wait this long for a new message if none is there"
        },
        "after": {
          "type": "string",
          "description": "peek: continue after this message id"
        },
        "label": {
          "type": "string",
          "description": "create: a name for your inbox"
        },
        "webhook_url": {
          "type": "string",
          "description": "create: https URL that receives every new message"
        },
        "ttl_days": {
          "type": "integer",
          "minimum": 1,
          "maximum": 365,
          "default": 30
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "required": [
        "success",
        "data"
      ],
      "properties": {
        "success": {
          "type": "boolean"
        },
        "data": {
          "type": "object",
          "properties": {
            "op": {
              "type": "string"
            },
            "inbox": {
              "type": "string"
            },
            "secret": {
              "type": "string",
              "description": "Only on create"
            },
            "delivered": {
              "type": "boolean"
            },
            "message_id": {
              "type": "string"
            },
            "messages": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string"
                  },
                  "sender": {
                    "type": "string"
                  },
                  "subject": {
                    "type": "string"
                  },
                  "body": {},
                  "reply_to": {
                    "type": "string"
                  },
                  "created_at": {
                    "type": "string"
                  }
                }
              }
            },
            "unread_left": {
              "type": "integer"
            }
          }
        }
      }
    }
  },
  "required": [
    "type"
  ]
}