max / makenotwork

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1	use thiserror::Error;
2
3	pub type Result<T> = std::result::Result<T, Error>;
4
5	#[derive(Debug, Error)]
6	pub enum Error {
7	#[error("tool not found: {0}")]
8	ToolNotFound(String),
9
10	#[error("resource not found: {0}")]
11	ResourceNotFound(String),
12
13	/// An in-flight request was cancelled — by the client (`notifications/
14	/// cancelled`) or by the app (a human took the buffer back). The `String`
15	/// is the cancelled request id.
16	#[error("request cancelled: {0}")]
17	Cancelled(String),
18
19	#[error("invalid arguments for tool `{tool}`: {message}")]
20	InvalidArgs { tool: String, message: String },
21
22	#[error("tool `{tool}` failed: {message}")]
23	ToolFailed { tool: String, message: String },
24
25	/// Registered refusal — the tool exists in the surface but is not offered.
26	/// The `reason` is stable text the model can act on.
27	#[error("tool `{tool}` is not offered: {reason}")]
28	Refused { tool: String, reason: String },
29
30	/// Write tool called without a grant for its capability. Includes a stable
31	/// suffix so small models learn not to retry.
32	#[error("tool `{tool}` requires capability `{capability}` which was not granted; do not retry")]
33	CapabilityDenied { tool: String, capability: String },
34
35	#[error("protocol error: {0}")]
36	Protocol(String),
37
38	#[error("transport error: {0}")]
39	Transport(String),
40
41	#[error(transparent)]
42	Json(#[from] serde_json::Error),
43
44	#[error(transparent)]
45	Io(#[from] std::io::Error),
46
47	#[cfg(feature = "ollama")]
48	#[error(transparent)]
49	Http(#[from] reqwest::Error),
50	}
51