tailscale-mcp 2.0.3

MCP server for Tailscale: the local node through the CLI, the tailnet through the control-plane API
Documentation 
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//! The tool table.
//!
//! One module per toolset, each declaring its tools with the `tools!` macro so
//! that the metadata row and the handler come from a single declaration. This
//! module is the only place that knows about all of them, and [`entries`] is
//! what the server is built from.

pub mod common;
pub mod local_debug;
pub mod local_files;
pub mod local_lock;
pub mod local_prefs;
pub mod local_serve;
pub mod local_status;
pub mod passthrough;
pub mod tailnet_devices;
pub mod tailnet_dns;
pub mod tailnet_invites;
pub mod tailnet_keys;
pub mod tailnet_logging;
pub mod tailnet_oauth;
pub mod tailnet_org;
pub mod tailnet_policy;
pub mod tailnet_posture;
pub mod tailnet_services;
pub mod tailnet_settings;
pub mod tailnet_users;
pub mod tailnet_webhooks;

/// Every tool this server can offer, before any gating.
pub fn entries() -> Vec<crate::registry::ToolEntry> {
    let mut all = Vec::new();
    all.extend(local_status::entries());
    all.extend(local_prefs::entries());
    all.extend(local_serve::entries());
    all.extend(local_files::entries());
    all.extend(local_lock::entries());
    all.extend(local_debug::entries());
    all.extend(passthrough::entries());
    all.extend(tailnet_devices::entries());
    all.extend(tailnet_dns::entries());
    all.extend(tailnet_policy::entries());
    all.extend(tailnet_keys::entries());
    all.extend(tailnet_invites::entries());
    all.extend(tailnet_users::entries());
    all.extend(tailnet_settings::entries());
    all.extend(tailnet_posture::entries());
    all.extend(tailnet_webhooks::entries());
    all.extend(tailnet_services::entries());
    all.extend(tailnet_oauth::entries());
    all.extend(tailnet_logging::entries());
    all.extend(tailnet_org::entries());
    all
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::registry::Registry;

    #[test]
    fn the_whole_table_forms_a_valid_registry() {
        // Names, duplicates, schemas and the confirmation rule are all checked
        // by `Registry::new`, so this one assertion covers the whole table.
        Registry::new(entries()).expect("the tool table is valid");
    }

    #[test]
    fn every_tool_refuses_an_argument_it_does_not_take() {
        // Including the tools that take nothing, whose schema has no property
        // list and once read as taking anything (Q172).
        let args = serde_json::json!({"not_an_argument": 1});
        let open: Vec<&str> = entries()
            .iter()
            .filter(|entry| {
                let schema = (entry.schema)().expect("every schema builds");
                let schema = serde_json::Value::Object(schema.as_ref().clone());
                crate::registry::unknown_argument_in(&schema, &args).is_none()
            })
            .map(|entry| entry.meta.name)
            .collect();
        assert!(open.is_empty(), "these accept any argument: {open:?}");
    }

    #[test]
    fn every_tailnet_tool_ends_in_a_known_verb() {
        // `spec.md`: tailnet tools are named `tailnet_<resource>_<verb>` "with
        // a fixed verb vocabulary". Fixed means this list, and means a name
        // that does not fit is a name to reconsider rather than a word to add.
        use crate::meta::{Surface, TAILNET_VERBS};

        for entry in entries() {
            let name = entry.meta.name;
            if entry.meta.surface() != Surface::Tailnet {
                continue;
            }
            let verb = name.rsplit('_').next().expect("a name has a last word");
            assert!(
                TAILNET_VERBS.contains(&verb),
                "`{name}` ends in `{verb}`, which is not one of {TAILNET_VERBS:?}"
            );
            assert!(
                name.matches('_').count() >= 2,
                "`{name}` needs a resource between the prefix and the verb"
            );
        }
    }
}