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Constants ¶
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const ( // TransportStdio launches the MCP server as a subprocess and communicates // over stdin/stdout. It is the default when Type is empty. TransportStdio = "stdio" // TransportHTTP connects to a remote MCP server over streamable HTTP. TransportHTTP = "http" // TransportSSE connects to a remote MCP server over server-sent events. // Deprecated by the MCP spec; prefer TransportHTTP. TransportSSE = "sse" )
Transport types for MCP server connections. The set mirrors the transports an ACP client may specify in session lifecycle requests.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type EnvVariable ¶
EnvVariable is a single environment variable for a stdio MCP server.
type HTTPHeader ¶
HTTPHeader is a single HTTP header sent with requests to an HTTP-based MCP server.
type MCPConfig ¶
type MCPConfig struct {
// Name is a human-readable identifier for the server. It is used as the
// tool namespace so that tools from this server are grouped together and
// disambiguated from tools provided by other servers or the harness itself.
Name string `json:"name"`
// Type selects the MCP transport: TransportHTTP ("http") or
// TransportSSE ("sse"). When empty or TransportStdio ("stdio"), the
// server is launched as a subprocess over stdio.
Type string `json:"type,omitempty"`
// Command is the path to the MCP server executable (stdio transport).
Command string `json:"command,omitempty"`
// Args are command-line arguments passed to the server (stdio transport).
Args []string `json:"args,omitempty"`
// Env are environment variables set when launching the server, in
// addition to the inherited process environment (stdio transport).
Env []EnvVariable `json:"env,omitempty"`
// URL is the endpoint URL (http and sse transports).
URL string `json:"url,omitempty"`
// Headers are HTTP headers included in requests to the server (http and
// sse transports). Authorization and other credentials are carried here.
Headers []HTTPHeader `json:"headers,omitempty"`
}
MCPConfig describes a single MCP server connection for the harness or ACP session lifecycle. It matches the ACP mcpServers wire shape: a stdio server sets Command/Args/Env with no Type, while HTTP and SSE servers set Type plus URL/Headers. Connection and tool discovery are handled internally by the harness — library consumers only supply configs.
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