AdaWorldAPI · AdaWorldAPI · Jun 24, 2026 · Jun 24, 2026
diff --git a/crates/ogar-action-handler/src/lib.rs b/crates/ogar-action-handler/src/lib.rs
@@ -40,10 +40,14 @@
 
 use std::process::Command;
 
+use std::collections::BTreeMap;
+
 use ogar_from_schema::action_ws::CapabilityExecutor;
 use ogar_from_schema::registration::{
-    ConcreteCapability, RegisteredCapabilities, lift_registration,
+    ConcreteCapability, RegisteredApplicabilities, RegisteredCapabilities, lift_applicabilities,
+    lift_registration,
 };
+use ogar_vocab::KausalSpec;
 
 /// Read a deployed handler's `GET /capabilities` REST response (a JSON
 /// `MapOfCapabilities`) and lift it into the concrete OGAR capability signatures
@@ -63,6 +67,22 @@ pub fn parse_capabilities(json: &str) -> Result<Vec<ConcreteCapability>, String>
     Ok(lift_registration(&caps))
 }
 
+/// Read a deployed handler's `GET /applicabilities` REST response (a JSON
+/// `MapOfApplicabilities`) and lift it into the per-handler guard sets — handler
+/// id → its [`KausalSpec::StateGuard`] list (the B2-lift applicabilities half).
+///
+/// Each handler's guards are the OGAR form of arago's node-match `ModelFilter`s:
+/// the action applies where they all match. The same `commit_via` state-guard the
+/// hard gate evaluates before executing.
+///
+/// # Errors
+/// Returns the `serde_json` error message if the body is not a valid
+/// `MapOfApplicabilities`.
+pub fn parse_applicabilities(json: &str) -> Result<BTreeMap<String, Vec<KausalSpec>>, String> {
+    let apps: RegisteredApplicabilities = serde_json::from_str(json).map_err(|e| e.to_string())?;
+    Ok(lift_applicabilities(&apps))
+}
+
 /// Reference executor for the **native** target: runs a capability's command via
 /// the local POSIX shell (`sh -c`). The concrete B1 impl that makes "OGAR
 /// running it here" real for local execution.
@@ -209,6 +229,34 @@ mod tests {
         assert_eq!(result[0], ("output".to_owned(), "lifted".to_owned()));
     }
 
+    /// B2-lift applicabilities: a real `GET /applicabilities` REST response
+    /// (JSON `MapOfApplicabilities`) parses → lifts to per-handler guard sets,
+    /// the `ModelFilter`s becoming `StateGuard`s the hard gate evaluates.
+    #[test]
+    fn rest_applicabilities_lift_to_per_handler_guards() {
+        // `modelFilters` is the primary field name; `model` / `filters` are
+        // accepted aliases (the inner field name isn't pinned by the spec).
+        let body = r#"{
+            "ssh-handler": {
+                "modelFilters": [
+                    { "var": "ogit/_type", "mode": "equals", "value": "ogit/Network/Machine" }
+                ]
+            },
+            "any-handler": { "model": [] }
+        }"#;
+
+        let lifted = parse_applicabilities(body).expect("valid MapOfApplicabilities");
+        assert_eq!(lifted.len(), 2);
+        assert!(lifted["any-handler"].is_empty());
+        assert_eq!(
+            lifted["ssh-handler"],
+            vec![KausalSpec::StateGuard {
+                guard_field: "ogit/_type".to_owned(),
+                guard_values: vec!["ogit/Network/Machine".to_owned()],
+            }]
+        );
+    }
+
     /// End-to-end: the dispatch core + this executor run a real command and
     /// produce the `sendActionResult` — "OGAR running it here," native target.
     #[test]

diff --git a/crates/ogar-from-schema/src/registration.rs b/crates/ogar-from-schema/src/registration.rs
@@ -161,6 +161,41 @@ pub fn lift_applicability(filters: &[ModelFilter]) -> Vec<KausalSpec> {
     filters.iter().map(model_filter_to_guard).collect()
 }
 
+/// One applicability as `GET /applicabilities` reports it — its node-match
+/// `ModelFilter`s.
+///
+/// The harvested spec (`docs/ARAGO-ACTIONHANDLER-PARITY.md` §2a) pins the
+/// *outer* shape (a `MapOfApplicabilities` keyed by handler id) and the
+/// `ModelFilter{Var,Mode,Value}` element, but not the exact name of the field
+/// that carries the filter list. This DTO accepts the plausible names
+/// (`modelFilters`, `model`, `filters`) via serde aliases and defaults to an
+/// empty list, so a real response binds without a code change once the field
+/// name is confirmed. The element mapping itself (`ModelFilter → StateGuard`) is
+/// the documented, `[G]` part.
+#[derive(Debug, Clone, PartialEq, Eq, Default)]
+#[cfg_attr(feature = "serde", derive(Deserialize))]
+#[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+pub struct RegisteredApplicability {
+    /// The node-match filters (an applicability applies where they all match).
+    #[cfg_attr(feature = "serde", serde(default, alias = "model", alias = "filters"))]
+    pub model_filters: Vec<ModelFilter>,
+}
+
+/// The `GET /applicabilities` response — a `MapOfApplicabilities` keyed by
+/// handler id.
+pub type RegisteredApplicabilities = BTreeMap<String, RegisteredApplicability>;
+
+/// Lift a whole `GET /applicabilities` response into the per-handler guard sets:
+/// handler id → its [`KausalSpec::StateGuard`] list (each handler applies where
+/// **all** of its guards match). Deterministic order (the source is a
+/// [`BTreeMap`], sorted by handler id).
+#[must_use]
+pub fn lift_applicabilities(apps: &RegisteredApplicabilities) -> BTreeMap<String, Vec<KausalSpec>> {
+    apps.iter()
+        .map(|(handler, app)| (handler.clone(), lift_applicability(&app.model_filters)))
+        .collect()
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -294,4 +329,34 @@ mod tests {
             }
         );
     }
+
+    #[test]
+    fn applicabilities_map_lifts_per_handler_guard_sets() {
+        let mut apps: RegisteredApplicabilities = BTreeMap::new();
+        apps.insert(
+            "ssh-handler".to_owned(),
+            RegisteredApplicability {
+                model_filters: vec![ModelFilter {
+                    var: "ogit/_type".to_owned(),
+                    mode: Some("equals".to_owned()),
+                    value: "ogit/Network/Machine".to_owned(),
+                }],
+            },
+        );
+        apps.insert(
+            "noop-handler".to_owned(),
+            RegisteredApplicability::default(),
+        );
+        let lifted = lift_applicabilities(&apps);
+        // Keyed by handler id (BTreeMap → sorted): noop-handler, ssh-handler.
+        assert_eq!(lifted.len(), 2);
+        assert!(lifted["noop-handler"].is_empty());
+        assert_eq!(
+            lifted["ssh-handler"],
+            vec![KausalSpec::StateGuard {
+                guard_field: "ogit/_type".to_owned(),
+                guard_values: vec!["ogit/Network/Machine".to_owned()],
+            }]
+        );
+    }
 }
diff --git a/docs/ARAGO-ACTIONHANDLER-PARITY.md b/docs/ARAGO-ACTIONHANDLER-PARITY.md
@@ -213,12 +213,15 @@ downstream. The remaining bricks:
   turn a real `MapOfCapabilities` JSON body into `ConcreteCapability` —
   `ActionParam[]` with concrete `(name, mandatory, default)` — proven end-to-end by
   `rest_registration_lifts_binds_and_runs` (JSON → lift → `bind_parameters` →
-  `NativeCommandExecutor` runs the command). The applicability side is the
-  documented field-for-field lift: `ModelFilter{Var,Mode,Value}` →
-  `KausalSpec::StateGuard` (`model_filter_to_guard` / `lift_applicability`, shipped);
-  what remains is wiring the `GET /applicabilities` JSON envelope read (the
-  `MapOfApplicabilities` outer shape) the same way `parse_capabilities` reads
-  capabilities.
+  `NativeCommandExecutor` runs the command). The applicability side is **shipped
+  too**: `GET /applicabilities` → `registration::{RegisteredApplicability,
+  lift_applicabilities}` + `ogar-action-handler::parse_applicabilities` turn a real
+  `MapOfApplicabilities` JSON body into per-handler `StateGuard` sets (handler id →
+  `Vec<KausalSpec>`) — the documented field-for-field `ModelFilter{Var,Mode,Value}`
+  → `KausalSpec::StateGuard` lift, proven by `rest_applicabilities_lift_to_per_handler_guards`.
+  The only residual is cosmetic: the inner filter-list field name is alias-flexible
+  (`modelFilters` / `model` / `filters`) pending confirmation against a live
+  response — the lift itself is exact.
 
 What remains is **glue over existing types** (a socket loop + a JSON codec + a
 registration parser) plus the non-native executor targets — not new IR. The
@@ -243,7 +246,7 @@ transport over them.
 | **Executor — SSH/REST/WinRM (B1)** | ⛔ `[H]` | further `CapabilityExecutor` impls (rs-graph-llm `graph-flow-action`) |
 | **Live WebSocket transport (B2-transport)** | ⛔ `[H]` | wrap `handle_submit` in a `tokio-tungstenite` loop + JSON codec (all shapes pinned, §2a) |
 | **Instance config lift — capabilities (B2-lift)** | ✅ `[G]` SHIPPED | `registration::lift_registration` + `ogar-action-handler::parse_capabilities`: real `GET /capabilities` JSON → `ConcreteCapability` (`ActionParam[]`); `rest_registration_lifts_binds_and_runs` (JSON → lift → bind → run) |
-| **Instance config lift — applicabilities (B2-lift)** | 🟡 `[G]` lift / `[H]` envelope | `ModelFilter{Var,Mode,Value}` → `StateGuard` shipped (`model_filter_to_guard`/`lift_applicability`); remaining: the `GET /applicabilities` `MapOfApplicabilities` JSON envelope read |
+| **Instance config lift — applicabilities (B2-lift)** | ✅ `[G]` SHIPPED | `registration::lift_applicabilities` + `ogar-action-handler::parse_applicabilities`: real `GET /applicabilities` JSON → per-handler `StateGuard` sets; `rest_applicabilities_lift_to_per_handler_guards`. Residual: inner filter-list field name is alias-flexible pending a live response |
 
 **Verdict:** OGAR is at **full contract + lifecycle + protocol-binding +
 reactive-dispatch parity**, and **a working native executor runs real commands
@@ -253,16 +256,16 @@ binding, the dispatch, and native execution are real and tested — and the gate
 now **wired to the executor**: rs-graph-llm's `graph-flow-action-ogar` runs OGAR's
 `CapabilityExecutor` only after `commit_via` commits, so an unauthorized or
 MUL-blocked action never executes (proven structurally — `take_result()` is
-`None`). The **capabilities instance lift is shipped too** — a real `GET
-/capabilities` JSON body lifts to concrete `ActionParam[]` and runs end-to-end
-(`rest_registration_lifts_binds_and_runs`). What's left for
+`None`). The **whole instance lift is shipped too** — real `GET /capabilities`
+and `GET /applicabilities` JSON bodies lift to concrete `ActionParam[]` (runs
+end-to-end, `rest_registration_lifts_binds_and_runs`) and per-handler `StateGuard`
+sets (`rest_applicabilities_lift_to_per_handler_guards`). What's left for
 a **live** drop-in replacement of arago's Python daemon: **B2-transport** (the
-WebSocket loop — all shapes/auth pinned), the **B2-lift applicabilities envelope**
-(`GET /applicabilities` JSON read; the `ModelFilter→StateGuard` lift is done), and
-the **non-native executor targets** (SSH/REST). Each is
-transport/parser/runner glue over existing types — **no missing IR, no missing
-protocol mapping**. That is the honest state: OGAR *is* an ActionHandler that
-runs commands here; a thin transport away from connecting to a live HIRO engine.
+WebSocket loop — all shapes/auth pinned) and the **non-native executor targets**
+(SSH/REST). Each is transport/runner glue over existing types — **no missing IR,
+no missing protocol mapping**. That is the honest state: OGAR *is* an ActionHandler
+that runs commands here, reads its own registration, and gates every action; a thin
+WebSocket transport away from connecting to a live HIRO engine.
 
 ---
 
@@ -285,8 +288,9 @@ is replaceable; the parity claim is certified, not argued.
 - `crates/ogar-from-schema/src/registration.rs` — B2-lift: the REST registration
   DTOs (`RegisteredCapability` / `ModelFilter`) + the pure lift
   (`lift_registration` → `ConcreteCapability`; `model_filter_to_guard`).
-- `crates/ogar-action-handler/src/lib.rs` — `parse_capabilities` (the `serde_json`
-  read of a `GET /capabilities` body; the B2-lift I/O half).
+- `crates/ogar-action-handler/src/lib.rs` — `parse_capabilities` /
+  `parse_applicabilities` (the `serde_json` read of the `GET /capabilities` and
+  `GET /applicabilities` bodies; the B2-lift I/O half).
 - `docs/HIRO-DO-ARM-LIFT.md` — the lossless-DO rule (the body is pointed-to).
 - `docs/ACTIONHANDLER-TURSTEHER.md` — RBAC-as-`const`, the cold-path gate, Rung.
 - `lance-graph-contract::action` — `ActionInvocation` / `commit_via<ClassRbac>`.

diff --git a/docs/DISCOVERY-MAP.md b/docs/DISCOVERY-MAP.md
@@ -212,7 +212,7 @@ two halves of a cell. ADR‑026 names the cascade that ties them.
 | D‑MARS‑CLASSID | MARS/Automation classids MINTED: `ConceptDomain::Automation` (0x0C), 9 concepts (`mars_application/resource/software/machine` 0x0C01‑04, `knowledge_item` 05, `mars_node_template` 06, `action_handler` 07, `action_applicability` 08, `automation_trigger` 09) — one domain spanning MARS structural CMDB + Automation DO‑arm (Auth precedent); resolves MARS‑TRANSCODING §1 deferral; passed 5+3 hardening (theorem/doctrine/integration/runtime savants + drift‑guards). Reserves the speculative rest | G | CODED | `ogar-vocab/src/lib.rs`, `ogar-class-view/src/lib.rs` | D‑VOCAB, D‑HIRO‑DO |
 | D‑ACTIONHANDLER‑PARITY | arago HIRO ActionHandler ⟷ OGAR: `assemble_action_handler` walks the OGIT `provides` graph (`ActionHandler→ActionApplicability→ActionCapability`) into `ActionHandlerSpec`/`CapabilitySlot`/`ApplicabilitySlot`/`ActionParam`. Config+ontology+`action-ws` protocol all map to OGAR types: arago `ModelFilter{Var,Mode,Value}`→`StateGuard`; `Capability.Name`→`predicate`; `resultParameters`→output sig; `action-ws` `submitAction→ack→sendActionResult` ⟷ `ActionInvocation` `Pending→Committed` (`commit_via` is the gate). **B2 protocol core SHIPPED + spec-faithful** (`action_ws`: all 6 `action-ws.yaml` message types — submitAction/sendActionResult/acknowledged/negativeAcknowledged/configChanged/error — + `submit_to_invocation`/`bind_parameters`/`invocation_to_result` (result=JSON string ≤1 MiB per spec) + connection consts (`ACTION_WS_PATH`, `auth_subprotocol`, `validate_id`); socket-free, `full_action_ws_roundtrip` proven; harvested from the HIRO 7.0 dev-portal specs §2a). **Reactive dispatch + B1 native executor SHIPPED**: `action_ws::handle_submit` (validate→ack/nack→bind→execute→result) over the `CapabilityExecutor` trait (the B1 seam); `ogar-action-handler::NativeCommandExecutor` runs `ExecuteCommand` for real (`full_dispatch_runs_a_real_command` — OGAR runs a command end-to-end). Remaining for a live drop-in: B2-transport (WS loop), B2-lift (REST registration parse), SSH/REST executor targets; gated on `PROBE‑OGAR‑ACTIONHANDLER‑RUN` | G (contract+protocol+native exec) / H (live socket) | CODED | `ogar-from-schema/src/{do_arm,action_ws}.rs`, `ogar-action-handler/`, `docs/ARAGO-ACTIONHANDLER-PARITY.md` | D‑HIRO‑DO, D‑MARS‑CLASSID |
 | D‑ACTIONHANDLER‑UPLINK | The hard gate wired to the OGAR executor (cross‑repo seam): rs‑graph‑llm `graph-flow-action-ogar::GatedOgarHandler` wraps an OGAR `CapabilityExecutor` as a `graph-flow-action::ActionHandler`, so `dispatch_via`'s cold floor (`commit_via`: def‑match → RBAC `ClassRbac` → `StateGuard` → MUL) lands **before** the executor's `handle`. Structural proof the contract lands first: `take_result()`/`run_gated` returns `None` whenever the gate refused — unauthorized actor → `Denied` (executor never runs), MUL `Block` → `Escalated` (executor never runs); only the authorized path reaches `NativeCommandExecutor` and runs the real command (3 tests). Dependency hygiene held: `graph-flow-action` stays contract‑only (`I‑ACTIONHANDLER‑IS‑KGV‑NOT‑CHOKEPOINT`); `ogar-from-schema` carries no `lance-graph` dep — the two sides meet only at this crate's API (one `lance-graph-contract`). rs‑graph‑llm pinned to toolchain 1.95.0 to match the AdaWorldAPI stack | G | CODED | `rs-graph-llm/graph-flow-action-ogar/src/lib.rs` | D‑ACTIONHANDLER‑PARITY |
-| D‑ACTIONHANDLER‑B2LIFT | REST registration **instance lift** (B2-lift) — turns a deployed handler's `GET /capabilities` JSON (`MapOfCapabilities`) into the concrete signatures the *schema* half can't supply: `registration::{RegisteredCapability,ModelFilter}` (typed DTOs, `Deserialize` behind the `serde` feature) + the pure lift `lift_registration → ConcreteCapability` (concrete `ActionParam[]` with `(name,mandatory,default)`) and `model_filter_to_guard` (arago `ModelFilter{Var,Mode,Value}`→`KausalSpec::StateGuard`, field‑for‑field). Producer stays parser‑free; the runtime `ogar-action-handler::parse_capabilities` does the `serde_json` read (producer‑defines‑types / runtime‑does‑I/O split). Proven end‑to‑end: `rest_registration_lifts_binds_and_runs` (real JSON → lift → `bind_parameters` → `NativeCommandExecutor` runs the command). Remaining: the `GET /applicabilities` `MapOfApplicabilities` envelope read (the `ModelFilter→StateGuard` lift is done) | G (capabilities) / H (applicabilities envelope) | CODED | `ogar-from-schema/src/registration.rs`, `ogar-action-handler/src/lib.rs` | D‑ACTIONHANDLER‑PARITY |
+| D‑ACTIONHANDLER‑B2LIFT | REST registration **instance lift** (B2-lift) — turns a deployed handler's `GET /capabilities` JSON (`MapOfCapabilities`) into the concrete signatures the *schema* half can't supply: `registration::{RegisteredCapability,ModelFilter}` (typed DTOs, `Deserialize` behind the `serde` feature) + the pure lift `lift_registration → ConcreteCapability` (concrete `ActionParam[]` with `(name,mandatory,default)`) and `model_filter_to_guard` (arago `ModelFilter{Var,Mode,Value}`→`KausalSpec::StateGuard`, field‑for‑field). Producer stays parser‑free; the runtime `ogar-action-handler::parse_capabilities` does the `serde_json` read (producer‑defines‑types / runtime‑does‑I/O split). Proven end‑to‑end: `rest_registration_lifts_binds_and_runs` (real JSON → lift → `bind_parameters` → `NativeCommandExecutor` runs the command). Remaining: the `GET /applicabilities` `MapOfApplicabilities` envelope read (the `ModelFilter→StateGuard` lift is done). **CORRECTION (canon‑pass 2026‑06‑24): applicabilities envelope now SHIPPED** — `registration::{RegisteredApplicability,lift_applicabilities}` + `ogar-action-handler::parse_applicabilities` lift a real `GET /applicabilities` JSON body into per‑handler `StateGuard` sets (`rest_applicabilities_lift_to_per_handler_guards`); inner filter‑list field name alias‑flexible (`modelFilters`/`model`/`filters`) pending a live response. Supersedes the "Remaining" note | G | CODED | `ogar-from-schema/src/registration.rs`, `ogar-action-handler/src/lib.rs` | D‑ACTIONHANDLER‑PARITY |
 | D‑OSM | `ogar-from-osm-pbf` — Node/Way/Relation; quadkey NiblePath from resolved geometry | H | IDEA | (queued) | D‑VOCAB, `[per rt]` D‑OSM‑3 |
 | D‑PATTERN | `ogar-pattern` — recognition library + confidence (FMA‑D/FIBO/SKR/PROV‑O) | H | IDEA | (queued) | D‑TTL |
 | D‑ACTION | `ogar-actionable` — lifecycle → `ActionDef`/`KausalSpec` | H | IDEA | (queued) | D‑PATTERN |