Enum BeforeToolCallResult 

pub enum BeforeToolCallResult {
    Continue(Value),
    ShortCircuit(Value),
}

Result from a before_tool_call hook invocation.

Determines whether tool execution continues with (possibly modified) arguments, or is short-circuited with a synthetic result.

Examples

Continuing with modified arguments

use adk_plugin::BeforeToolCallResult;
use serde_json::json;

// Pass through arguments unchanged
let args = json!({"query": "hello"});
let result = BeforeToolCallResult::Continue(args);

// Or modify arguments before passing to the tool
let sanitized = json!({"query": "hello", "safe_mode": true});
let result = BeforeToolCallResult::Continue(sanitized);

Short-circuiting tool execution

use adk_plugin::BeforeToolCallResult;
use serde_json::json;

// Skip tool execution and return a cached result
let cached = json!({"data": "cached response"});
let result = BeforeToolCallResult::ShortCircuit(cached);

Variants

Continue(Value)

Continue execution with (possibly modified) arguments.

The contained value will be passed to the next plugin in the chain, and ultimately to the tool execution if this is the last plugin.

ShortCircuit(Value)

Short-circuit: skip tool execution and use this synthetic result.

When returned, no further plugins in the chain are invoked, the tool is not executed, and this value is used as the tool output.

Trait Implementations

impl Debug for BeforeToolCallResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.