Struct ToolSpec

Source

pub struct ToolSpec { /* private fields */ }

Implementations§

Source §

impl ToolSpec

Source

pub fn new(name: impl Into<String>, description: impl Into<String>) -> Self

Examples found in repository ?

examples/local_loop.rs (line 44)

43fn add_tool() -> ToolSpec {
44    ToolSpec::new("add", "add two numbers")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {
48                "a": {"type": "integer"},
49                "b": {"type": "integer"}
50            },
51            "required": ["a", "b"],
52            "additionalProperties": false
53        }))
54        .expect("valid schema")
55        .with_handler(|args, _deps| async move {
56            let a = args
57                .get("a")
58                .and_then(|v| v.as_i64())
59                .ok_or_else(|| ToolError::Execution("a missing".to_string()))?;
60            let b = args
61                .get("b")
62                .and_then(|v| v.as_i64())
63                .ok_or_else(|| ToolError::Execution("b missing".to_string()))?;
64            Ok(ToolOutcome::Text((a + b).to_string()))
65        })
66}
67
68fn done_tool() -> ToolSpec {
69    ToolSpec::new("done", "complete and return")
70        .with_schema(json!({
71            "type": "object",
72            "properties": {
73                "message": {"type": "string"}
74            },
75            "required": ["message"],
76            "additionalProperties": false
77        }))
78        .expect("valid schema")
79        .with_handler(|args, _deps| async move {
80            let message = args
81                .get("message")
82                .and_then(|v| v.as_str())
83                .ok_or_else(|| ToolError::Execution("message missing".to_string()))?;
84            Ok(ToolOutcome::Done(message.to_string()))
85        })
86}

More examples

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examples/di_override.rs (line 44)

43async fn main() -> Result<(), Box<dyn Error>> {
44    let read_dep_tool = ToolSpec::new("read_dep", "read injected value")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {},
48            "required": [],
49            "additionalProperties": false
50        }))?
51        .with_handler(|_args, deps| {
52            let value = deps.get::<u32>().map(|v| *v).unwrap_or_default();
53            async move { Ok(ToolOutcome::Text(value.to_string())) }
54        });
55
56    let done_tool = ToolSpec::new("done", "finish")
57        .with_schema(json!({
58            "type": "object",
59            "properties": {
60                "message": {"type": "string"}
61            },
62            "required": ["message"],
63            "additionalProperties": false
64        }))?
65        .with_handler(|args, _deps| async move {
66            let message = args
67                .get("message")
68                .and_then(|v| v.as_str())
69                .unwrap_or("done");
70            Ok(ToolOutcome::Done(message.to_string()))
71        });
72
73    let model = ScriptedModel::new(vec![
74        Ok(ModelCompletion {
75            text: None,
76            thinking: None,
77            tool_calls: vec![ModelToolCall {
78                id: "call_1".to_string(),
79                name: "read_dep".to_string(),
80                arguments: json!({}),
81            }],
82            usage: None,
83        }),
84        Ok(ModelCompletion {
85            text: None,
86            thinking: None,
87            tool_calls: vec![ModelToolCall {
88                id: "call_2".to_string(),
89                name: "done".to_string(),
90                arguments: json!({"message": "dependency override applied"}),
91            }],
92            usage: None,
93        }),
94    ]);
95
96    let mut agent = Agent::builder()
97        .model(model)
98        .tool(read_dep_tool)
99        .tool(done_tool)
100        .dependency(1_u32)
101        .dependency_override(9_u32)
102        .build()?;
103
104    let response = agent.query("use dependency").await?;
105    println!("final: {response}");
106
107    Ok(())
108}

Source

pub fn with_schema(self, schema: Value) -> Result<Self, SchemaError>

Examples found in repository ?

examples/local_loop.rs (lines 45-53)

43fn add_tool() -> ToolSpec {
44    ToolSpec::new("add", "add two numbers")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {
48                "a": {"type": "integer"},
49                "b": {"type": "integer"}
50            },
51            "required": ["a", "b"],
52            "additionalProperties": false
53        }))
54        .expect("valid schema")
55        .with_handler(|args, _deps| async move {
56            let a = args
57                .get("a")
58                .and_then(|v| v.as_i64())
59                .ok_or_else(|| ToolError::Execution("a missing".to_string()))?;
60            let b = args
61                .get("b")
62                .and_then(|v| v.as_i64())
63                .ok_or_else(|| ToolError::Execution("b missing".to_string()))?;
64            Ok(ToolOutcome::Text((a + b).to_string()))
65        })
66}
67
68fn done_tool() -> ToolSpec {
69    ToolSpec::new("done", "complete and return")
70        .with_schema(json!({
71            "type": "object",
72            "properties": {
73                "message": {"type": "string"}
74            },
75            "required": ["message"],
76            "additionalProperties": false
77        }))
78        .expect("valid schema")
79        .with_handler(|args, _deps| async move {
80            let message = args
81                .get("message")
82                .and_then(|v| v.as_str())
83                .ok_or_else(|| ToolError::Execution("message missing".to_string()))?;
84            Ok(ToolOutcome::Done(message.to_string()))
85        })
86}

More examples

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examples/di_override.rs (lines 45-50)

43async fn main() -> Result<(), Box<dyn Error>> {
44    let read_dep_tool = ToolSpec::new("read_dep", "read injected value")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {},
48            "required": [],
49            "additionalProperties": false
50        }))?
51        .with_handler(|_args, deps| {
52            let value = deps.get::<u32>().map(|v| *v).unwrap_or_default();
53            async move { Ok(ToolOutcome::Text(value.to_string())) }
54        });
55
56    let done_tool = ToolSpec::new("done", "finish")
57        .with_schema(json!({
58            "type": "object",
59            "properties": {
60                "message": {"type": "string"}
61            },
62            "required": ["message"],
63            "additionalProperties": false
64        }))?
65        .with_handler(|args, _deps| async move {
66            let message = args
67                .get("message")
68                .and_then(|v| v.as_str())
69                .unwrap_or("done");
70            Ok(ToolOutcome::Done(message.to_string()))
71        });
72
73    let model = ScriptedModel::new(vec![
74        Ok(ModelCompletion {
75            text: None,
76            thinking: None,
77            tool_calls: vec![ModelToolCall {
78                id: "call_1".to_string(),
79                name: "read_dep".to_string(),
80                arguments: json!({}),
81            }],
82            usage: None,
83        }),
84        Ok(ModelCompletion {
85            text: None,
86            thinking: None,
87            tool_calls: vec![ModelToolCall {
88                id: "call_2".to_string(),
89                name: "done".to_string(),
90                arguments: json!({"message": "dependency override applied"}),
91            }],
92            usage: None,
93        }),
94    ]);
95
96    let mut agent = Agent::builder()
97        .model(model)
98        .tool(read_dep_tool)
99        .tool(done_tool)
100        .dependency(1_u32)
101        .dependency_override(9_u32)
102        .build()?;
103
104    let response = agent.query("use dependency").await?;
105    println!("final: {response}");
106
107    Ok(())
108}

Source

pub fn with_handler<F, Fut>(self, handler: F) -> Self
where F: Fn(Value, &DependencyMap) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<ToolOutcome, ToolError>> + Send + 'static,

Examples found in repository ?

examples/local_loop.rs (lines 55-65)

43fn add_tool() -> ToolSpec {
44    ToolSpec::new("add", "add two numbers")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {
48                "a": {"type": "integer"},
49                "b": {"type": "integer"}
50            },
51            "required": ["a", "b"],
52            "additionalProperties": false
53        }))
54        .expect("valid schema")
55        .with_handler(|args, _deps| async move {
56            let a = args
57                .get("a")
58                .and_then(|v| v.as_i64())
59                .ok_or_else(|| ToolError::Execution("a missing".to_string()))?;
60            let b = args
61                .get("b")
62                .and_then(|v| v.as_i64())
63                .ok_or_else(|| ToolError::Execution("b missing".to_string()))?;
64            Ok(ToolOutcome::Text((a + b).to_string()))
65        })
66}
67
68fn done_tool() -> ToolSpec {
69    ToolSpec::new("done", "complete and return")
70        .with_schema(json!({
71            "type": "object",
72            "properties": {
73                "message": {"type": "string"}
74            },
75            "required": ["message"],
76            "additionalProperties": false
77        }))
78        .expect("valid schema")
79        .with_handler(|args, _deps| async move {
80            let message = args
81                .get("message")
82                .and_then(|v| v.as_str())
83                .ok_or_else(|| ToolError::Execution("message missing".to_string()))?;
84            Ok(ToolOutcome::Done(message.to_string()))
85        })
86}

More examples

Hide additional examples

examples/di_override.rs (lines 51-54)

43async fn main() -> Result<(), Box<dyn Error>> {
44    let read_dep_tool = ToolSpec::new("read_dep", "read injected value")
45        .with_schema(json!({
46            "type": "object",
47            "properties": {},
48            "required": [],
49            "additionalProperties": false
50        }))?
51        .with_handler(|_args, deps| {
52            let value = deps.get::<u32>().map(|v| *v).unwrap_or_default();
53            async move { Ok(ToolOutcome::Text(value.to_string())) }
54        });
55
56    let done_tool = ToolSpec::new("done", "finish")
57        .with_schema(json!({
58            "type": "object",
59            "properties": {
60                "message": {"type": "string"}
61            },
62            "required": ["message"],
63            "additionalProperties": false
64        }))?
65        .with_handler(|args, _deps| async move {
66            let message = args
67                .get("message")
68                .and_then(|v| v.as_str())
69                .unwrap_or("done");
70            Ok(ToolOutcome::Done(message.to_string()))
71        });
72
73    let model = ScriptedModel::new(vec![
74        Ok(ModelCompletion {
75            text: None,
76            thinking: None,
77            tool_calls: vec![ModelToolCall {
78                id: "call_1".to_string(),
79                name: "read_dep".to_string(),
80                arguments: json!({}),
81            }],
82            usage: None,
83        }),
84        Ok(ModelCompletion {
85            text: None,
86            thinking: None,
87            tool_calls: vec![ModelToolCall {
88                id: "call_2".to_string(),
89                name: "done".to_string(),
90                arguments: json!({"message": "dependency override applied"}),
91            }],
92            usage: None,
93        }),
94    ]);
95
96    let mut agent = Agent::builder()
97        .model(model)
98        .tool(read_dep_tool)
99        .tool(done_tool)
100        .dependency(1_u32)
101        .dependency_override(9_u32)
102        .build()?;
103
104    let response = agent.query("use dependency").await?;
105    println!("final: {response}");
106
107    Ok(())
108}