Ausca
Pay-per-call APIs and MCP services for agents, no accounts or keys, with verifiable receipts.
Should I use this
Quality & Safety
B
Findings (3)
- LOWTool 'ausca_browser_session_status' description lacks action verbin ausca_browser_session_status
- LOWTool 'ausca_get_offer' description lacks action verbin ausca_get_offer
- LOWTool 'ausca_browser_session_status' suggests web access but openWorldHint=falsein ausca_browser_session_status
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~9,382Tokens (tool definitions)
~6.1 KBTypical response size
Significant attention impact (7.33% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"agent-services": {
"command": "npx",
"args": [
"ausca"
]
}
}
}Runnable packages
npmausca
0.1.0stdioRemote endpoints
https://ausca.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (14)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢ausca_agent_inbox_attachment(attachment_id, idempotency_key, inbox_id, message_id)
For an active inbox, return an idempotent download URL only when the exact stored attachment has a clean safety verdict. The URL expires after at most 60 seconds and never after inbox expiry; a clean verdict does not make the attachment content trusted. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"attachment_id": {
"$ref": "#/$defs/AgentInboxAttachmentID"
},
"idempotency_key": {
"$ref": "#/$defs/IdempotencyKey"
},
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
},
"message_id": {
"$ref": "#/$defs/AgentInboxMessageID"
}
},
"required": [
"inbox_id",
"message_id",
"attachment_id",
"idempotency_key"
],
"$defs": {
"AgentInboxAttachmentID": {
"pattern": "^att_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"AgentInboxMessageID": {
"pattern": "^msg_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"IdempotencyKey": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[^\\s\\x00-\\x1F\\x7F](?:[^\\x00-\\x1F\\x7F]*[^\\s\\x00-\\x1F\\x7F])?$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CreateAgentInboxAttachmentAccess:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"attachment": {
"$ref": "#/$defs/AgentInboxAttachmentAccess"
},
"status": {
"const": "ready"
}
},
"required": [
"status",
"attachment"
],
"$defs": {
"AgentInboxAttachmentAccess": {
"additionalProperties": false,
"properties": {
"download_url": {
"format": "uri",
"maxLength": 2048,
"minLength": 1,
"pattern": "^https://inbox\\.ausca\\.com/",
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"filename": {
"maxLength": 255,
"minLength": 1,
"type": "string"
},
"media_type": {
"maxLength": 255,
"minLength": 1,
"type": "string"
},
"size_bytes": {
"maximum": 10485760,
"minimum": 1,
"type": "integer"
}
},
"required": [
"download_url",
"expires_at",
"filename",
"media_type",
"size_bytes"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:CreateAgentInboxAttachmentAccess:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🔴ausca_agent_inbox_delete(inbox_id)
Idempotently stop inbound visibility and delete retained message and attachment content for one inbox lease, including an already-terminal lease. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
}
},
"required": [
"inbox_id"
],
"$defs": {
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:DeleteAgentInbox:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"inbox": {
"$ref": "#/$defs/AgentInbox"
},
"status": {
"enum": [
"deleted",
"already_terminal"
],
"type": "string"
}
},
"required": [
"status",
"inbox"
],
"$defs": {
"AgentInbox": {
"additionalProperties": false,
"properties": {
"address": {
"format": "email",
"maxLength": 320,
"minLength": 3,
"pattern": "^[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+(?:\\.[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+)*@[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?(?:\\.[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?)+$",
"type": "string"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"deleted_at": {
"format": "date-time",
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
},
"state": {
"enum": [
"active",
"deleting",
"deleted",
"expired"
],
"type": "string"
}
},
"required": [
"inbox_id",
"address",
"state",
"created_at",
"expires_at"
],
"type": "object"
},
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:DeleteAgentInbox:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢ausca_agent_inbox_messages(after, inbox_id, wait_seconds)
For an active inbox, return at most 50 normalized message summaries after an opaque inbox-bound cursor, optionally waiting up to 30 seconds for a newer message. A bounded wait may return an empty page and continuation cursor. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"after": {
"$ref": "#/$defs/InboxCursor"
},
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
},
"wait_seconds": {
"$ref": "#/$defs/InboxWaitSeconds"
}
},
"required": [
"inbox_id"
],
"$defs": {
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"InboxCursor": {
"description": "Opaque continuation bound to one inbox. Callers must not construct or modify it.",
"pattern": "^cur_[A-Za-z0-9_-]{22,171}$",
"type": "string"
},
"InboxWaitSeconds": {
"default": 0,
"maximum": 30,
"minimum": 0,
"type": "integer"
}
},
"$id": "urn:ausca:mcp:ListAgentInboxMessages:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"cursor": {
"$ref": "#/$defs/InboxCursor"
},
"messages": {
"items": {
"$ref": "#/$defs/AgentInboxMessageSummary"
},
"maxItems": 50,
"type": "array"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"messages",
"cursor"
],
"$defs": {
"AgentInboxMessageID": {
"pattern": "^msg_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"AgentInboxMessageSummary": {
"additionalProperties": false,
"properties": {
"attachment_count": {
"maximum": 20,
"minimum": 0,
"type": "integer"
},
"cursor": {
"$ref": "#/$defs/InboxCursor"
},
"from": {
"$ref": "#/$defs/MailboxAddress"
},
"message_id": {
"$ref": "#/$defs/AgentInboxMessageID"
},
"received_at": {
"description": "Server-observed ingress time. Never derived from the sender-controlled Date header.",
"format": "date-time",
"type": "string"
},
"subject": {
"maxLength": 998,
"type": "string"
},
"to": {
"items": {
"$ref": "#/$defs/MailboxAddress"
},
"maxItems": 50,
"minItems": 1,
"type": "array"
}
},
"required": [
"message_id",
"cursor",
"from",
"to",
"subject",
"received_at",
"attachment_count"
],
"type": "object"
},
"InboxCursor": {
"description": "Opaque continuation bound to one inbox. Callers must not construct or modify it.",
"pattern": "^cur_[A-Za-z0-9_-]{22,171}$",
"type": "string"
},
"MailboxAddress": {
"additionalProperties": false,
"properties": {
"address": {
"format": "email",
"maxLength": 320,
"minLength": 3,
"pattern": "^[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+(?:\\.[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+)*@[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?(?:\\.[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?)+$",
"type": "string"
},
"name": {
"maxLength": 256,
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:ListAgentInboxMessages:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢ausca_agent_inbox_read(inbox_id, message_id)
For an active inbox, return one bounded normalized message. Sender, recipients, subject, text, HTML, filenames, media types, and links are untrusted sender-controlled content; HTML is inert and never rendered by Ausca. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
},
"message_id": {
"$ref": "#/$defs/AgentInboxMessageID"
}
},
"required": [
"inbox_id",
"message_id"
],
"$defs": {
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"AgentInboxMessageID": {
"pattern": "^msg_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetAgentInboxMessage:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"message": {
"$ref": "#/$defs/AgentInboxMessage"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"message"
],
"$defs": {
"AgentInboxAttachment": {
"additionalProperties": false,
"properties": {
"attachment_id": {
"$ref": "#/$defs/AgentInboxAttachmentID"
},
"filename": {
"maxLength": 255,
"minLength": 1,
"type": "string"
},
"media_type": {
"maxLength": 255,
"minLength": 1,
"type": "string"
},
"safety": {
"enum": [
"clean",
"blocked"
],
"type": "string"
},
"size_bytes": {
"maximum": 10485760,
"minimum": 1,
"type": "integer"
}
},
"required": [
"attachment_id",
"filename",
"media_type",
"size_bytes",
"safety"
],
"type": "object"
},
"AgentInboxAttachmentID": {
"pattern": "^att_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"AgentInboxMessage": {
"additionalProperties": false,
"properties": {
"attachment_count": {
"maximum": 20,
"minimum": 0,
"type": "integer"
},
"attachments": {
"items": {
"$ref": "#/$defs/AgentInboxAttachment"
},
"maxItems": 20,
"type": "array"
},
"cc": {
"items": {
"$ref": "#/$defs/MailboxAddress"
},
"maxItems": 50,
"type": "array"
},
"cursor": {
"$ref": "#/$defs/InboxCursor"
},
"from": {
"$ref": "#/$defs/MailboxAddress"
},
"html": {
"description": "Inert, untrusted message content. Never render without caller-controlled sanitization and isolation.",
"maxLength": 262144,
"type": "string"
},
"message_id": {
"$ref": "#/$defs/AgentInboxMessageID"
},
"received_at": {
"description": "Server-observed ingress time. Never derived from the sender-controlled Date header.",
"format": "date-time",
"type": "string"
},
"reply_to": {
"items": {
"$ref": "#/$defs/MailboxAddress"
},
"maxItems": 10,
"type": "array"
},
"subject": {
"maxLength": 998,
"type": "string"
},
"text": {
"maxLength": 262144,
"type": "string"
},
"to": {
"items": {
"$ref": "#/$defs/MailboxAddress"
},
"maxItems": 50,
"minItems": 1,
"type": "array"
}
},
"required": [
"message_id",
"cursor",
"from",
"to",
"subject",
"received_at",
"attachment_count",
"cc",
"reply_to",
"text",
"html",
"attachments"
],
"type": "object"
},
"AgentInboxMessageID": {
"pattern": "^msg_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"InboxCursor": {
"description": "Opaque continuation bound to one inbox. Callers must not construct or modify it.",
"pattern": "^cur_[A-Za-z0-9_-]{22,171}$",
"type": "string"
},
"MailboxAddress": {
"additionalProperties": false,
"properties": {
"address": {
"format": "email",
"maxLength": 320,
"minLength": 3,
"pattern": "^[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+(?:\\.[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+)*@[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?(?:\\.[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?)+$",
"type": "string"
},
"name": {
"maxLength": 256,
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:GetAgentInboxMessage:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢ausca_agent_inbox_status(inbox_id)
Return the random receive-only address, authoritative lease status, and current expiry for one inbox, including terminal status after deletion or expiry. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
}
},
"required": [
"inbox_id"
],
"$defs": {
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetAgentInbox:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"inbox": {
"$ref": "#/$defs/AgentInbox"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"inbox"
],
"$defs": {
"AgentInbox": {
"additionalProperties": false,
"properties": {
"address": {
"format": "email",
"maxLength": 320,
"minLength": 3,
"pattern": "^[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+(?:\\.[A-Za-z0-9!#$%&'*+/=?^_{|}~-]+)*@[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?(?:\\.[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?)+$",
"type": "string"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"deleted_at": {
"format": "date-time",
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"inbox_id": {
"$ref": "#/$defs/AgentInboxID"
},
"state": {
"enum": [
"active",
"deleting",
"deleted",
"expired"
],
"type": "string"
}
},
"required": [
"inbox_id",
"address",
"state",
"created_at",
"expires_at"
],
"type": "object"
},
"AgentInboxID": {
"pattern": "^inb_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetAgentInbox:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢ausca_artifact_access(artifact_ref, idempotency_key)
Return an idempotent, short-lived download URL for one verified artifact this service holds, including a result artifact named by a succeeded invocation's output_artifact. HTTP sends no request body, not even an empty JSON object; artifact_ref is the URL path parameter and Idempotency-Key is a header. The MCP tool instead takes artifact_ref and idempotency_key as tool arguments. The URL expires after at most 60 seconds. The immutable artifact reference is the only authority; verify downloaded bytes against the returned content digest.
Input Schema
{
"type": "object",
"properties": {
"artifact_ref": {
"$ref": "#/$defs/ArtifactRef"
},
"idempotency_key": {
"$ref": "#/$defs/IdempotencyKey"
}
},
"required": [
"artifact_ref",
"idempotency_key"
],
"$defs": {
"ArtifactRef": {
"description": "Opaque artifact reference minted by artifact commitment. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"IdempotencyKey": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[^\\s\\x00-\\x1F\\x7F](?:[^\\x00-\\x1F\\x7F]*[^\\s\\x00-\\x1F\\x7F])?$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CreateArtifactAccess:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"artifact": {
"$ref": "#/$defs/ArtifactAccess"
},
"status": {
"const": "ready"
}
},
"required": [
"status",
"artifact"
],
"$defs": {
"ArtifactAccess": {
"additionalProperties": false,
"properties": {
"artifact_ref": {
"$ref": "#/$defs/ArtifactRef"
},
"content_digest": {
"$ref": "#/$defs/Digest"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"download_url": {
"format": "uri",
"maxLength": 2048,
"minLength": 1,
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"media_type": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"size_bytes": {
"maximum": 26214400,
"minimum": 1,
"type": "integer"
}
},
"required": [
"artifact_ref",
"content_digest",
"media_type",
"size_bytes",
"created_at",
"download_url",
"expires_at"
],
"type": "object"
},
"ArtifactRef": {
"description": "Opaque artifact reference minted by artifact commitment. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CreateArtifactAccess:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🔴ausca_browser_session_close(session_id)
Idempotently terminate the CDP relay and upstream browser for one lease. Closing never creates another payment. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments.
Input Schema
{
"type": "object",
"properties": {
"session_id": {
"$ref": "#/$defs/BrowserSessionID"
}
},
"required": [
"session_id"
],
"$defs": {
"BrowserSessionID": {
"pattern": "^brs_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CloseBrowserSession:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"session": {
"$ref": "#/$defs/BrowserSession"
},
"status": {
"enum": [
"closed",
"already_terminal"
],
"type": "string"
}
},
"required": [
"status",
"session"
],
"$defs": {
"BrowserSession": {
"additionalProperties": false,
"properties": {
"closed_at": {
"format": "date-time",
"type": "string"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"session_id": {
"$ref": "#/$defs/BrowserSessionID"
},
"state": {
"enum": [
"creating",
"ready",
"closing",
"closed",
"expired",
"failed"
],
"type": "string"
}
},
"required": [
"session_id",
"state",
"created_at",
"expires_at"
],
"type": "object"
},
"BrowserSessionID": {
"pattern": "^brs_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CloseBrowserSession:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}⚪ausca_browser_session_connect(idempotency_key, session_id)
Return one single-use Ausca CDP relay URL for a ready lease. The URL expires after 60 seconds, only one CDP connection may be live, and no more than 64 unexpired tickets may coexist. Expired ticket records are compacted, so this is not a lifetime reconnect quota. Supply the lease bearer on the HTTP or MCP transport; never place it in tool arguments. The upstream provider URL and credential are never disclosed.
Input Schema
{
"type": "object",
"properties": {
"idempotency_key": {
"$ref": "#/$defs/IdempotencyKey"
},
"session_id": {
"$ref": "#/$defs/BrowserSessionID"
}
},
"required": [
"session_id",
"idempotency_key"
],
"$defs": {
"BrowserSessionID": {
"pattern": "^brs_[A-Za-z0-9_-]{22,64}$",
"type": "string"
},
"IdempotencyKey": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[^\\s\\x00-\\x1F\\x7F](?:[^\\x00-\\x1F\\x7F]*[^\\s\\x00-\\x1F\\x7F])?$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:ConnectBrowserSession:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"connection": {
"$ref": "#/$defs/BrowserConnection"
},
"status": {
"const": "ticket_issued"
}
},
"required": [
"status",
"connection"
],
"$defs": {
"BrowserConnection": {
"additionalProperties": false,
"properties": {
"expires_at": {
"format": "date-time",
"type": "string"
},
"websocket_url": {
"format": "uri",
"maxLength": 2048,
"minLength": 1,
"pattern": "^wss://browser\\.ausca\\.com/",
"type": "string"
}
},
"required": [
"websocket_url",
"expires_at"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:ConnectBrowserSession:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢ausca_browser_session_status(session_id)
Return authoritative status and expiry for one browser-session lease. The lease capability is supplied by the transport and is never a tool argument or response field.
Input Schema
{
"type": "object",
"properties": {
"session_id": {
"$ref": "#/$defs/BrowserSessionID"
}
},
"required": [
"session_id"
],
"$defs": {
"BrowserSessionID": {
"pattern": "^brs_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetBrowserSession:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"session": {
"$ref": "#/$defs/BrowserSession"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"session"
],
"$defs": {
"BrowserSession": {
"additionalProperties": false,
"properties": {
"closed_at": {
"format": "date-time",
"type": "string"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"expires_at": {
"format": "date-time",
"type": "string"
},
"session_id": {
"$ref": "#/$defs/BrowserSessionID"
},
"state": {
"enum": [
"creating",
"ready",
"closing",
"closed",
"expired",
"failed"
],
"type": "string"
}
},
"required": [
"session_id",
"state",
"created_at",
"expires_at"
],
"type": "object"
},
"BrowserSessionID": {
"pattern": "^brs_[A-Za-z0-9_-]{22,64}$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetBrowserSession:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🔴ausca_cancel_invocation(invocation_id)
Request bounded cancellation of one invocation. Cancellation is idempotent, may be refused, and may lose a race with terminal completion.
Input Schema
{
"type": "object",
"properties": {
"invocation_id": {
"$ref": "#/$defs/Identifier"
}
},
"required": [
"invocation_id"
],
"$defs": {
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:CancelInvocation:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"$defs": {
"ArtifactEvidence": {
"additionalProperties": false,
"properties": {
"artifact_ref": {
"$ref": "#/$defs/ArtifactRef"
},
"content_digest": {
"$ref": "#/$defs/Digest"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"media_type": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"size_bytes": {
"maximum": 26214400,
"minimum": 1,
"type": "integer"
}
},
"required": [
"artifact_ref",
"content_digest",
"media_type",
"size_bytes",
"created_at"
],
"type": "object"
},
"ArtifactRef": {
"description": "Opaque artifact reference minted by artifact commitment. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"InvocationFailure": {
"additionalProperties": false,
"properties": {
"code": {
"maxLength": 96,
"minLength": 1,
"type": "string"
},
"message": {
"maxLength": 500,
"minLength": 1,
"type": "string"
}
},
"required": [
"code",
"message"
],
"type": "object"
},
"InvocationState": {
"additionalProperties": false,
"properties": {
"failure": {
"$ref": "#/$defs/InvocationFailure"
},
"invocation_id": {
"$ref": "#/$defs/Identifier"
},
"offer_revision_digest": {
"$ref": "#/$defs/Digest"
},
"output": {},
"output_artifact": {
"$ref": "#/$defs/ArtifactEvidence"
},
"output_digest": {
"$ref": "#/$defs/Digest"
},
"receipt_ref": {
"$ref": "#/$defs/ReceiptReference"
},
"state": {
"enum": [
"admitted",
"running",
"succeeded",
"failed",
"cancellation_requested",
"cancelled"
],
"type": "string"
},
"updated_at": {
"format": "date-time",
"type": "string"
}
},
"required": [
"invocation_id",
"offer_revision_digest",
"state",
"updated_at"
],
"type": "object"
},
"ReceiptReference": {
"additionalProperties": false,
"properties": {
"public_url": {
"description": "Unguessable public verification page for the privacy-bounded hash-only proof. It reveals the receipt digest, service, public price, and completion time, but not input bytes, output bytes, or their content digests.",
"format": "uri",
"maxLength": 2048,
"pattern": "^https://[^?#]+/r/[a-f0-9]{64}$",
"type": "string"
},
"type": {
"const": "receipt"
},
"uri": {
"description": "Opaque receipt identity minted by the notary. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"type",
"uri"
],
"type": "object"
},
"RefusedResult": {
"additionalProperties": false,
"properties": {
"code": {
"enum": [
"offer_unavailable",
"schema_mismatch",
"quote_expired",
"terms_changed",
"replay_conflict",
"payment_authority_required",
"payment_not_authorized",
"capacity_unavailable",
"not_found",
"cancellation_not_available",
"artifact_gone"
],
"type": "string"
},
"reason": {
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"status": {
"const": "refused"
}
},
"required": [
"status",
"code",
"reason"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:CancelInvocation:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"oneOf": [
{
"additionalProperties": false,
"properties": {
"invocation": {
"$ref": "#/$defs/InvocationState"
},
"status": {
"enum": [
"cancellation_requested"
],
"type": "string"
}
},
"required": [
"status",
"invocation"
],
"type": "object"
},
{
"$ref": "#/$defs/RefusedResult"
}
]
}🟢ausca_get_invocation(invocation_id)
Read the authoritative durable state, output commitment, and receipt reference for one invocation without creating a new purchase or retry identity.
Input Schema
{
"type": "object",
"properties": {
"invocation_id": {
"$ref": "#/$defs/Identifier"
}
},
"required": [
"invocation_id"
],
"$defs": {
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetInvocation:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"$defs": {
"ArtifactEvidence": {
"additionalProperties": false,
"properties": {
"artifact_ref": {
"$ref": "#/$defs/ArtifactRef"
},
"content_digest": {
"$ref": "#/$defs/Digest"
},
"created_at": {
"format": "date-time",
"type": "string"
},
"media_type": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"size_bytes": {
"maximum": 26214400,
"minimum": 1,
"type": "integer"
}
},
"required": [
"artifact_ref",
"content_digest",
"media_type",
"size_bytes",
"created_at"
],
"type": "object"
},
"ArtifactRef": {
"description": "Opaque artifact reference minted by artifact commitment. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"InvocationFailure": {
"additionalProperties": false,
"properties": {
"code": {
"maxLength": 96,
"minLength": 1,
"type": "string"
},
"message": {
"maxLength": 500,
"minLength": 1,
"type": "string"
}
},
"required": [
"code",
"message"
],
"type": "object"
},
"InvocationState": {
"additionalProperties": false,
"properties": {
"failure": {
"$ref": "#/$defs/InvocationFailure"
},
"invocation_id": {
"$ref": "#/$defs/Identifier"
},
"offer_revision_digest": {
"$ref": "#/$defs/Digest"
},
"output": {},
"output_artifact": {
"$ref": "#/$defs/ArtifactEvidence"
},
"output_digest": {
"$ref": "#/$defs/Digest"
},
"receipt_ref": {
"$ref": "#/$defs/ReceiptReference"
},
"state": {
"enum": [
"admitted",
"running",
"succeeded",
"failed",
"cancellation_requested",
"cancelled"
],
"type": "string"
},
"updated_at": {
"format": "date-time",
"type": "string"
}
},
"required": [
"invocation_id",
"offer_revision_digest",
"state",
"updated_at"
],
"type": "object"
},
"ReceiptReference": {
"additionalProperties": false,
"properties": {
"public_url": {
"description": "Unguessable public verification page for the privacy-bounded hash-only proof. It reveals the receipt digest, service, public price, and completion time, but not input bytes, output bytes, or their content digests.",
"format": "uri",
"maxLength": 2048,
"pattern": "^https://[^?#]+/r/[a-f0-9]{64}$",
"type": "string"
},
"type": {
"const": "receipt"
},
"uri": {
"description": "Opaque receipt identity minted by the notary. Relay it unchanged; its form is not part of the contract.",
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"type",
"uri"
],
"type": "object"
},
"RefusedResult": {
"additionalProperties": false,
"properties": {
"code": {
"enum": [
"offer_unavailable",
"schema_mismatch",
"quote_expired",
"terms_changed",
"replay_conflict",
"payment_authority_required",
"payment_not_authorized",
"capacity_unavailable",
"not_found",
"cancellation_not_available",
"artifact_gone"
],
"type": "string"
},
"reason": {
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"status": {
"const": "refused"
}
},
"required": [
"status",
"code",
"reason"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:GetInvocation:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"oneOf": [
{
"additionalProperties": false,
"properties": {
"invocation": {
"$ref": "#/$defs/InvocationState"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"invocation"
],
"type": "object"
},
{
"$ref": "#/$defs/RefusedResult"
}
]
}🟢ausca_get_offer(offer_id, revision_digest)
Resolve one active offer or an exact immutable revision, including the schema and revision digests required to construct a valid invocation envelope.
Input Schema
{
"type": "object",
"properties": {
"offer_id": {
"$ref": "#/$defs/Identifier"
},
"revision_digest": {
"$ref": "#/$defs/Digest"
}
},
"required": [
"offer_id"
],
"$defs": {
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:GetOffer:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"offer": {
"$ref": "#/$defs/OfferSummary"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"offer"
],
"$defs": {
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"OfferSummary": {
"additionalProperties": false,
"properties": {
"catalog_url": {
"const": "/catalog.json",
"type": "string"
},
"description": {
"maxLength": 2000,
"type": "string"
},
"input_schema_digest": {
"$ref": "#/$defs/Digest"
},
"input_schema_url": {
"format": "uri-reference",
"type": "string"
},
"offer_id": {
"$ref": "#/$defs/Identifier"
},
"offer_revision": {
"$ref": "#/$defs/Identifier"
},
"offer_revision_digest": {
"$ref": "#/$defs/Digest"
},
"output_schema_digest": {
"$ref": "#/$defs/Digest"
},
"output_schema_url": {
"format": "uri-reference",
"type": "string"
},
"route": {
"additionalProperties": false,
"properties": {
"method": {
"const": "POST"
},
"path": {
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"method",
"path"
],
"type": "object"
},
"title": {
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"offer_id",
"offer_revision",
"offer_revision_digest",
"input_schema_digest",
"output_schema_digest",
"title",
"route",
"input_schema_url",
"output_schema_url",
"catalog_url"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:GetOffer:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}⚪ausca_prepare_invocation(attribution, idempotency_key, input, input_schema_digest, offer_id, ...)
Validate one exact invocation envelope and return immutable preparation terms or a typed refusal. Preparation never accepts payment material from model-authored tool arguments.
Input Schema
{
"type": "object",
"properties": {
"attribution": {
"additionalProperties": false,
"properties": {
"campaign": {
"maxLength": 128,
"pattern": "^[a-z0-9][a-z0-9._-]{0,127}$",
"type": "string"
},
"source": {
"maxLength": 64,
"pattern": "^[a-z0-9][a-z0-9._-]{0,63}$",
"type": "string"
}
},
"required": [
"source"
],
"type": "object"
},
"idempotency_key": {
"maxLength": 128,
"minLength": 16,
"type": "string"
},
"input": {},
"input_schema_digest": {
"$ref": "#/$defs/Digest"
},
"offer_id": {
"$ref": "#/$defs/Identifier"
},
"offer_revision": {
"$ref": "#/$defs/Identifier"
},
"offer_revision_digest": {
"$ref": "#/$defs/Digest"
},
"output_schema_digest": {
"$ref": "#/$defs/Digest"
},
"parent_binding": {
"$ref": "#/$defs/ParentBinding"
}
},
"required": [
"offer_id",
"offer_revision",
"offer_revision_digest",
"input_schema_digest",
"output_schema_digest",
"input",
"idempotency_key"
],
"$defs": {
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"ParentBinding": {
"additionalProperties": false,
"properties": {
"execution_digest": {
"$ref": "#/$defs/Digest"
},
"invocation_id": {
"$ref": "#/$defs/Identifier"
}
},
"required": [
"invocation_id",
"execution_digest"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:PrepareInvocation:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"$defs": {
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"PaymentChallenge": {
"additionalProperties": false,
"properties": {
"media_type": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"payload": {},
"payload_digest": {
"$ref": "#/$defs/Digest"
},
"protocol_version": {
"maxLength": 32,
"minLength": 1,
"type": "string"
},
"quote_expires_at": {
"format": "date-time",
"type": "string"
},
"quote_ref": {
"$ref": "#/$defs/Identifier"
},
"settlement_family": {
"maxLength": 64,
"minLength": 1,
"type": "string"
}
},
"required": [
"settlement_family",
"protocol_version",
"media_type",
"payload",
"payload_digest",
"quote_ref",
"quote_expires_at"
],
"type": "object"
},
"PreparedInvocation": {
"additionalProperties": false,
"properties": {
"challenge": {
"$ref": "#/$defs/PaymentChallenge"
},
"invocation_id": {
"$ref": "#/$defs/Identifier"
},
"status": {
"const": "prepared"
}
},
"required": [
"status",
"invocation_id",
"challenge"
],
"type": "object"
},
"RefusedResult": {
"additionalProperties": false,
"properties": {
"code": {
"enum": [
"offer_unavailable",
"schema_mismatch",
"quote_expired",
"terms_changed",
"replay_conflict",
"payment_authority_required",
"payment_not_authorized",
"capacity_unavailable",
"not_found",
"cancellation_not_available",
"artifact_gone"
],
"type": "string"
},
"reason": {
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"status": {
"const": "refused"
}
},
"required": [
"status",
"code",
"reason"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:PrepareInvocation:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"oneOf": [
{
"$ref": "#/$defs/PreparedInvocation"
},
{
"$ref": "#/$defs/RefusedResult"
}
]
}🟢ausca_search_offers(cursor, limit, q)
Search the current immutable Ausca offer catalog by free-text query. Returns stable offer identities and revision digests without creating product or payment state.
Input Schema
{
"type": "object",
"properties": {
"cursor": {
"$ref": "#/$defs/CatalogCursor"
},
"limit": {
"$ref": "#/$defs/SearchLimit"
},
"q": {
"$ref": "#/$defs/SearchQuery"
}
},
"$defs": {
"CatalogCursor": {
"description": "Opaque, catalog-snapshot-bound continuation. Callers must not construct or modify it.",
"maxLength": 512,
"minLength": 1,
"pattern": "^ausca:catalog-cursor:v1:[a-f0-9]{64}:[a-f0-9]{64}:[A-Za-z0-9_-]{2,171}$",
"type": "string"
},
"SearchLimit": {
"default": 20,
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"SearchQuery": {
"maxLength": 256,
"minLength": 1,
"pattern": "^[^\\s\\x00-\\x1F\\x7F](?:[^\\x00-\\x1F\\x7F]*[^\\s\\x00-\\x1F\\x7F])?$",
"type": "string"
}
},
"$id": "urn:ausca:mcp:SearchOffers:input:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"next_cursor": {
"$ref": "#/$defs/CatalogCursor"
},
"offers": {
"items": {
"$ref": "#/$defs/OfferSummary"
},
"maxItems": 100,
"type": "array"
},
"status": {
"const": "ok"
}
},
"required": [
"status",
"offers"
],
"$defs": {
"CatalogCursor": {
"description": "Opaque, catalog-snapshot-bound continuation. Callers must not construct or modify it.",
"maxLength": 512,
"minLength": 1,
"pattern": "^ausca:catalog-cursor:v1:[a-f0-9]{64}:[a-f0-9]{64}:[A-Za-z0-9_-]{2,171}$",
"type": "string"
},
"Digest": {
"pattern": "^sha256:[a-f0-9]{64}$",
"type": "string"
},
"Identifier": {
"maxLength": 128,
"minLength": 1,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]*$",
"type": "string"
},
"OfferSummary": {
"additionalProperties": false,
"properties": {
"catalog_url": {
"const": "/catalog.json",
"type": "string"
},
"description": {
"maxLength": 2000,
"type": "string"
},
"input_schema_digest": {
"$ref": "#/$defs/Digest"
},
"input_schema_url": {
"format": "uri-reference",
"type": "string"
},
"offer_id": {
"$ref": "#/$defs/Identifier"
},
"offer_revision": {
"$ref": "#/$defs/Identifier"
},
"offer_revision_digest": {
"$ref": "#/$defs/Digest"
},
"output_schema_digest": {
"$ref": "#/$defs/Digest"
},
"output_schema_url": {
"format": "uri-reference",
"type": "string"
},
"route": {
"additionalProperties": false,
"properties": {
"method": {
"const": "POST"
},
"path": {
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"method",
"path"
],
"type": "object"
},
"title": {
"maxLength": 80,
"minLength": 1,
"type": "string"
}
},
"required": [
"offer_id",
"offer_revision",
"offer_revision_digest",
"input_schema_digest",
"output_schema_digest",
"title",
"route",
"input_schema_url",
"output_schema_url",
"catalog_url"
],
"type": "object"
}
},
"$id": "urn:ausca:mcp:SearchOffers:output:v1",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Community
Evidence
Recent observations
verifiedversion not recorded14 tools
verifiedversion not recorded14 tools