diff --git a/schema-bundle.bin b/schema-bundle.bin
index b207960..7d2b721 100644
--- a/schema-bundle.bin
+++ b/schema-bundle.bin
@@ -1,4 +1,4 @@
-´³bundle·µ³tcp„´³schema·³version°³definitions·³TcpLocal´³rec´³lit³	tcp-local„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³
SignedInteger„„„„„³	TcpRemote´³rec´³lit³
+´³bundle·µ³rpc„´³schema·³version°³definitions·³Answer´³rec´³lit³a„´³tupleµ´³named³request³any„´³named³response³any„„„„³Result´³orµµ±ok´³rec´³lit³ok„´³tupleµ´³named³value³any„„„„„µ±error´³rec´³lit³error„´³tupleµ´³named³error³any„„„„„„„³Question´³rec´³lit³q„´³tupleµ´³named³request³any„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³tcp„´³schema·³version°³definitions·³TcpLocal´³rec´³lit³	tcp-local„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³
SignedInteger„„„„„³	TcpRemote´³rec´³lit³
 tcp-remote„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³
SignedInteger„„„„„³TcpPeerInfo´³rec´³lit³tcp-peer„´³tupleµ´³named³handle´³embedded³any„„´³named³local´³refµ„³TcpLocal„„´³named³remote´³refµ„³	TcpRemote„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³http„´³schema·³version°³definitions·³Chunk´³orµµ±string´³atom³String„„µ±bytes´³atom³
 ByteString„„„„³Headers´³dictof´³atom³Symbol„´³atom³String„„³MimeType´³atom³Symbol„³
 QueryValue´³orµµ±string´³atom³String„„µ±file´³rec´³lit³file„´³tupleµ´³named³filename´³atom³String„„´³named³headers´³refµ„³Headers„„´³named³body´³atom³
@@ -40,5 +40,5 @@ ByteString
 RunService´³rec´³lit³run-service„´³tupleµ´³named³serviceName³any„„„„³ServiceState´³rec´³lit³
service-state„´³tupleµ´³named³serviceName³any„´³named³state´³refµ„³State„„„„„³
ServiceObject´³rec´³lit³service-object„´³tupleµ´³named³serviceName³any„´³named³object³any„„„„³RequireService´³rec´³lit³require-service„´³tupleµ´³named³serviceName³any„„„„³RestartService´³rec´³lit³restart-service„´³tupleµ´³named³serviceName³any„„„„³ServiceDependency´³rec´³lit³
 depends-on„´³tupleµ´³named³depender³any„´³named³dependee´³refµ„³ServiceState„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³protocol„´³schema·³version°³definitions·³Nop´³lit€„³Oid´³atom³
SignedInteger„³Sync´³rec´³lit³S„´³tupleµ´³named³peer´³embedded´³lit�„„„„„„³Turn´³seqof´³refµ„³	TurnEvent„„³Error´³rec´³lit³error„´³tupleµ´³named³message´³atom³String„„´³named³detail³any„„„„³Event´³orµµ±Assert´³refµ„³Assert„„µ±Retract´³refµ„³Retract„„µ±Message´³refµ„³Message„„µ±Sync´³refµ„³Sync„„„„³Assert´³rec´³lit³A„´³tupleµ´³named³	assertion´³refµ„³	Assertion„„´³named³handle´³refµ„³Handle„„„„„³Handle´³atom³
SignedInteger„³Packet´³orµµ±Turn´³refµ„³Turn„„µ±Error´³refµ„³Error„„µ±	Extension´³refµ„³	Extension„„µ±Nop´³refµ„³Nop„„„„³Message´³rec´³lit³M„´³tupleµ´³named³body´³refµ„³	Assertion„„„„„³Retract´³rec´³lit³R„´³tupleµ´³named³handle´³refµ„³Handle„„„„„³	Assertion³any³	Extension´³rec´³named³label³any„´³named³fields´³seqof³any„„„³	TurnEvent´³tupleµ´³named³oid´³refµ„³Oid„„´³named³event´³refµ„³Event„„„„„³embeddedType€„„µ³	dataspace„´³schema·³version°³definitions·³Observe´³rec´³lit³Observe„´³tupleµ´³named³pattern´³refµ³dataspacePatterns„³Pattern„„´³named³observer´³embedded³any„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³
 gatekeeper„´³schema·³version°³definitions·³Bind´³rec´³lit³bind„´³tupleµ´³named³description´³refµ„³Description„„´³named³target´³embedded³any„„´³named³observer´³refµ„³BindObserver„„„„„³Step´³rec´³named³stepType´³atom³Symbol„„´³tupleµ´³named³detail³any„„„„³Bound´³orµµ±bound´³rec´³lit³bound„´³tupleµ´³named³pathStep´³refµ„³PathStep„„„„„„µ±Rejected´³refµ„³Rejected„„„„³Route´³rec´³lit³route„´³tuplePrefixµ´³named³
-transports´³seqof³any„„„´³named³	pathSteps´³seqof´³refµ„³PathStep„„„„„³Resolve´³rec´³lit³resolve„´³tupleµ´³named³step´³refµ„³Step„„´³named³observer´³embedded´³refµ„³Resolved„„„„„„³PathStep´³rec´³named³stepType´³atom³Symbol„„´³tupleµ´³named³detail³any„„„„³Rejected´³rec´³lit³rejected„´³tupleµ´³named³detail³any„„„„³Resolved´³orµµ±accepted´³rec´³lit³accepted„´³tupleµ´³named³responderSession´³embedded³any„„„„„„µ±Rejected´³refµ„³Rejected„„„„³Description´³rec´³named³stepType´³atom³Symbol„„´³tupleµ´³named³detail³any„„„„³ResolvePath´³rec´³lit³resolve-path„´³tupleµ´³named³route´³refµ„³Route„„´³named³addr³any„´³named³control´³embedded´³refµ„³TransportControl„„„´³named³resolved´³refµ„³Resolved„„„„„³BindObserver´³orµµ±present´³embedded´³refµ„³Bound„„„µ±absent´³lit€„„„„³ForceDisconnect´³rec´³lit³force-disconnect„´³tupleµ„„„³ResolvedPathStep´³rec´³lit³	path-step„´³tupleµ´³named³origin´³embedded´³refµ„³Resolve„„„´³named³pathStep´³refµ„³PathStep„„´³named³resolved´³refµ„³Resolved„„„„„³TransportControl´³refµ„³ForceDisconnect„³TransportConnection´³rec´³lit³connect-transport„´³tupleµ´³named³addr³any„´³named³control´³embedded´³refµ„³TransportControl„„„´³named³resolved´³refµ„³Resolved„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³transportAddress„´³schema·³version°³definitions·³Tcp´³rec´³lit³tcp„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³
SignedInteger„„„„„³Unix´³rec´³lit³unix„´³tupleµ´³named³path´³atom³String„„„„„³Stdio´³rec´³lit³stdio„´³tupleµ„„„³	WebSocket´³rec´³lit³ws„´³tupleµ´³named³url´³atom³String„„„„„„³embeddedType€„„µ³dataspacePatterns„´³schema·³version°³definitions·³AnyAtom´³orµµ±bool´³atom³Boolean„„µ±double´³atom³Double„„µ±int´³atom³
SignedInteger„„µ±string´³atom³String„„µ±bytes´³atom³
+transports´³seqof³any„„„´³named³	pathSteps´³seqof´³refµ„³PathStep„„„„„³Resolve´³rec´³lit³resolve„´³tupleµ´³named³step´³refµ„³Step„„´³named³observer´³embedded´³refµ„³Resolved„„„„„„³PathStep´³rec´³named³stepType´³atom³Symbol„„´³tupleµ´³named³detail³any„„„„³Rejected´³rec´³lit³rejected„´³tupleµ´³named³detail³any„„„„³Resolved´³orµµ±accepted´³rec´³lit³accepted„´³tupleµ´³named³responderSession´³embedded³any„„„„„„µ±Rejected´³refµ„³Rejected„„„„³Description´³rec´³named³stepType´³atom³Symbol„„´³tupleµ´³named³detail³any„„„„³ResolvePath´³rec´³lit³resolve-path„´³tupleµ´³named³route´³refµ„³Route„„„„„³BindObserver´³orµµ±present´³embedded´³refµ„³Bound„„„µ±absent´³lit€„„„„³ResolvedPath´³rec´³lit³
resolved-path„´³tupleµ´³named³addr³any„´³named³control´³embedded´³refµ„³TransportControl„„„´³named³responderSession´³embedded³any„„„„„³ForceDisconnect´³rec´³lit³force-disconnect„´³tupleµ„„„³ResolvePathStep´³rec´³lit³resolve-path-step„´³tupleµ´³named³origin´³embedded´³refµ„³Resolve„„„´³named³pathStep´³refµ„³PathStep„„„„„³ConnectTransport´³rec´³lit³connect-transport„´³tupleµ´³named³addr³any„„„„³ResolvedPathStep´³embedded³any„³TransportControl´³refµ„³ForceDisconnect„³ConnectedTransport´³rec´³lit³connected-transport„´³tupleµ´³named³addr³any„´³named³control´³embedded´³refµ„³TransportControl„„„´³named³responderSession´³embedded³any„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„µ³transportAddress„´³schema·³version°³definitions·³Tcp´³rec´³lit³tcp„´³tupleµ´³named³host´³atom³String„„´³named³port´³atom³
SignedInteger„„„„„³Unix´³rec´³lit³unix„´³tupleµ´³named³path´³atom³String„„„„„³Stdio´³rec´³lit³stdio„´³tupleµ„„„³	WebSocket´³rec´³lit³ws„´³tupleµ´³named³url´³atom³String„„„„„„³embeddedType€„„µ³dataspacePatterns„´³schema·³version°³definitions·³AnyAtom´³orµµ±bool´³atom³Boolean„„µ±double´³atom³Double„„µ±int´³atom³
SignedInteger„„µ±string´³atom³String„„µ±bytes´³atom³
 ByteString„„µ±symbol´³atom³Symbol„„µ±embedded´³embedded³any„„„„³Pattern´³orµµ±discard´³rec´³lit³_„´³tupleµ„„„„µ±bind´³rec´³lit³bind„´³tupleµ´³named³pattern´³refµ„³Pattern„„„„„„µ±lit´³rec´³lit³lit„´³tupleµ´³named³value´³refµ„³AnyAtom„„„„„„µ±group´³rec´³lit³group„´³tupleµ´³named³type´³refµ„³	GroupType„„´³named³entries´³dictof³any´³refµ„³Pattern„„„„„„„„„³	GroupType´³orµµ±rec´³rec´³lit³rec„´³tupleµ´³named³label³any„„„„„µ±arr´³rec´³lit³arr„´³tupleµ„„„„µ±dict´³rec´³lit³dict„´³tupleµ„„„„„„„³embeddedType´³refµ³	EntityRef„³Cap„„„„„
\ No newline at end of file
diff --git a/schemas/gatekeeper.prs b/schemas/gatekeeper.prs
index 9ba662c..ba64c3f 100644
--- a/schemas/gatekeeper.prs
+++ b/schemas/gatekeeper.prs
@@ -52,14 +52,23 @@ Bound = <bound @pathStep PathStep> / Rejected .
 # ---------------------------------------------------------------------------
 # Protocol at client-side dataspaces, for resolution utilities
 
-# Assertion. In response to observation of this with appropriate captures/wildcards in `addr`
-# and `resolved`, respondent will follow `route.pathSteps` starting from one of the
-# `route.transports`, asserting `ResolvePath` with the final `Resolved` as well as the selected
-# transport `addr` and a `control` for it.
-ResolvePath = <resolve-path @route Route @addr any @control #:TransportControl @resolved Resolved> .
+# The client-side operates using `rpc.Question`s and `rpc.Answer`s.
 
-TransportConnection = <connect-transport @addr any @control #:TransportControl @resolved Resolved> .
-ResolvedPathStep = <path-step @origin #:Resolve @pathStep PathStep @resolved Resolved> .
+# Assert `rpc.Question` with `ResolvePath` to request resolution of `Route`. The resolution
+# utility will continuously try to satisfy the request, following `route.pathSteps` starting
+# from one of the `route.transports`, ultimately asserting `rpc.Answer` with an `rpc.Result` in
+# response. If the process completes successfully, the `rpc.Result.ok` will carry a
+# `ResolvedPath`.
+ResolvePath = <resolve-path @route Route> .
+ResolvedPath = <resolved-path @addr any @control #:TransportControl @responderSession #:any> .
+
+# Assertions. As `ResolvePath`/`ResolvedPath`, but just for an initial transport link setup.
+ConnectTransport = <connect-transport @addr any> .
+ConnectedTransport = <connected-transport @addr any @control #:TransportControl @responderSession #:any> .
+
+# Assertions. Like `ResolvePath`/`ResolvedPath`, but for incremental resolution along a route.
+ResolvePathStep = <resolve-path-step @origin #:Resolve @pathStep PathStep> .
+ResolvedPathStep = #:any .
 PathStep = <<rec> @stepType symbol [@detail any]> .
 
 # A `Route` describes a network path that can be followed to reach some target entity.
diff --git a/schemas/rpc.prs b/schemas/rpc.prs
new file mode 100644
index 0000000..ec839c9
--- /dev/null
+++ b/schemas/rpc.prs
@@ -0,0 +1,11 @@
+version 1 .
+embeddedType EntityRef.Cap .
+
+# Assertion. Establishes a frame for a request.
+Question = <q @request any> .
+
+# Assertion or message. Responds to a question.
+Answer = <a @request any @response any> .
+
+# Value. Captures a common "ok-or-error" pattern as seen in e.g. Rust.
+Result = <ok @value any> / <error @error any> .
