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feat(params): add secret parameter support #210

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4dc348b
feat(params): add secret parameter support
bradhe Feb 25, 2026
204808f
Rename secret parameter field to hidden
bradhe Feb 25, 2026
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24 changes: 24 additions & 0 deletions crates/config/src/towerfile.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,9 @@ pub struct Parameter {

#[serde(default)]
pub default: String,

#[serde(default)]
pub hidden: bool,
}

#[derive(Deserialize, Serialize, Debug)]
Expand Down Expand Up @@ -122,6 +125,7 @@ impl Towerfile {
name,
description,
default,
hidden: false,
});
}
}
Expand Down Expand Up @@ -272,6 +276,26 @@ mod test {
assert_eq!(towerfile.parameters.len(), 2);
assert_eq!(towerfile.parameters[0].name, "my_first_param");
assert_eq!(towerfile.parameters[1].name, "my_second_param");
assert!(!towerfile.parameters[0].hidden);
}

#[test]
fn test_parses_secret_parameters() {
let toml = r#"
[app]
name = "my-app"
script = "./script.py"
source = ["*.py"]

[[parameters]]
name = "MY_PARAMETER"
hidden = true
"#;

let towerfile = crate::Towerfile::from_toml(toml).unwrap();
assert_eq!(towerfile.parameters.len(), 1);
assert_eq!(towerfile.parameters[0].name, "MY_PARAMETER");
assert!(towerfile.parameters[0].hidden);
}

#[test]
Expand Down
4 changes: 4 additions & 0 deletions crates/tower-api/src/models/parameter.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@ pub struct Parameter {
#[serde_as(as = "DefaultOnNull")]
#[serde(rename = "name")]
pub name: String,
#[serde(default)]
#[serde(rename = "hidden")]
pub hidden: bool,
}

impl Parameter {
Expand All @@ -31,6 +34,7 @@ impl Parameter {
default,
description,
name,
hidden: false,
}
}
}
9 changes: 8 additions & 1 deletion crates/tower-api/src/models/run_parameter.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,10 +20,17 @@ pub struct RunParameter {
#[serde_as(as = "DefaultOnNull")]
#[serde(rename = "value")]
pub value: String,
#[serde(default)]
#[serde(rename = "hidden")]
pub hidden: bool,
}

impl RunParameter {
pub fn new(name: String, value: String) -> RunParameter {
RunParameter { name, value }
RunParameter {
name,
value,
hidden: false,
}
}
}
12 changes: 10 additions & 2 deletions crates/tower-cmd/src/api.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -840,7 +840,11 @@ pub async fn create_schedule(
let run_parameters = parameters.map(|params| {
params
.into_iter()
.map(|(key, value)| RunParameter { name: key, value })
.map(|(key, value)| RunParameter {
name: key,
value,
hidden: false,
})
Comment on lines 843 to 847
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@coderabbitai coderabbitai bot Feb 25, 2026

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⚠️ Potential issue | 🟠 Major

secret is hard-coded to false for all schedule parameters.

At Line 843 and Line 881 mappings, this prevents creating/updating secret schedule parameters through this path and can downgrade secrecy semantics when parameters are re-sent. The request shape should carry secret metadata instead of forcing false.

Also applies to: 881-885

🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@crates/tower-cmd/src/api.rs` around lines 843 - 847, The mapping currently
constructs RunParameter with secret: false, which drops secret metadata; update
the map closures that produce RunParameter (the ones building RunParameter {
name: key, value, secret: false }) to read the secret flag from the incoming
request parameter (e.g., use the source tuple/struct's secret field such as
param.1.secret or param.secret) and set RunParameter.secret accordingly; make
the same change at both mapping sites that create RunParameter so secret
parameters are preserved when creating/updating schedules.

.collect()
});

Expand Down Expand Up @@ -874,7 +878,11 @@ pub async fn update_schedule(
let run_parameters = parameters.map(|params| {
params
.into_iter()
.map(|(key, value)| RunParameter { name: key, value })
.map(|(key, value)| RunParameter {
name: key,
value,
hidden: false,
})
.collect()
});

Expand Down
17 changes: 16 additions & 1 deletion crates/tower-cmd/src/mcp.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -889,7 +889,22 @@ IMPORTANT REMINDERS:
async fn tower_schedules_list(&self) -> Result<CallToolResult, McpError> {
match api::list_schedules(&self.config, None, None).await {
Ok(response) => {
Self::json_success(serde_json::json!({"schedules": response.schedules}))
let schedules = response
.schedules
.into_iter()
.map(|mut schedule| {
if let Some(parameters) = schedule.parameters.as_mut() {
for parameter in parameters {
if parameter.hidden {
parameter.value = "[hidden]".to_string();
}
}
}
schedule
})
.collect::<Vec<_>>();

Self::json_success(serde_json::json!({"schedules": schedules}))
}
Err(e) => Self::error_result("Failed to list schedules", e),
}
Expand Down
11 changes: 5 additions & 6 deletions crates/tower/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,8 +23,8 @@ mod bindings {

let spec = PackageSpec::from_towerfile(&towerfile);

let runtime = tokio::runtime::Runtime::new()
.map_err(|e| PyRuntimeError::new_err(e.to_string()))?;
let runtime =
tokio::runtime::Runtime::new().map_err(|e| PyRuntimeError::new_err(e.to_string()))?;

let output = PathBuf::from(output);

Expand All @@ -40,8 +40,7 @@ mod bindings {
.as_ref()
.ok_or_else(|| PyRuntimeError::new_err("package build produced no output file"))?;

std::fs::copy(src, &output)
.map_err(|e| PyRuntimeError::new_err(e.to_string()))?;
std::fs::copy(src, &output).map_err(|e| PyRuntimeError::new_err(e.to_string()))?;

Ok(())
})
Expand All @@ -53,8 +52,8 @@ mod bindings {
/// args: Command line arguments (typically sys.argv).
#[pyfunction]
fn _run_cli(args: Vec<String>) -> PyResult<()> {
let runtime = tokio::runtime::Runtime::new()
.map_err(|e| PyRuntimeError::new_err(e.to_string()))?;
let runtime =
tokio::runtime::Runtime::new().map_err(|e| PyRuntimeError::new_err(e.to_string()))?;

// App::new_from_args() must run inside block_on because
// Session::from_config_dir() requires an active tokio reactor.
Expand Down