diff --git a/rs/types/management_canister_types/src/http.rs b/rs/types/management_canister_types/src/http.rs
index 4de5e3baf1a5..a7d7753981d3 100644
--- a/rs/types/management_canister_types/src/http.rs
+++ b/rs/types/management_canister_types/src/http.rs
@@ -391,3 +391,100 @@ pub struct CanisterHttpResponsePayload {
 }
 
 impl Payload<'_> for CanisterHttpResponsePayload {}
+
+/// The result type for the `flexible_http_request` management canister endpoint.
+///
+/// ```text
+/// type flexible_http_request_result = variant {
+///   ok: vec http_request_result;
+///   err: flexible_http_request_err;
+/// };
+/// ```
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub enum FlexibleHttpRequestResult {
+    #[serde(rename = "ok")]
+    Ok(Vec<CanisterHttpResponsePayload>),
+    #[serde(rename = "err")]
+    Err(FlexibleHttpRequestErr),
+}
+
+/// The error type returned by `flexible_http_request`.
+///
+/// ```text
+/// type flexible_http_request_err = record {
+///   global_error: opt variant { ... };
+///   node_details : vec record { ... };
+///   message: text;
+/// };
+/// ```
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub struct FlexibleHttpRequestErr {
+    pub global_error: Option<FlexibleHttpGlobalError>,
+    pub node_details: Vec<FlexibleHttpNodeDetail>,
+    pub message: String,
+}
+
+/// Why the flexible HTTP outcall failed globally.
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub enum FlexibleHttpGlobalError {
+    #[serde(rename = "invalid_parameters")]
+    InvalidParameters(candid::Reserved),
+    #[serde(rename = "timeout")]
+    Timeout(candid::Reserved),
+    #[serde(rename = "out_of_cycles")]
+    OutOfCycles(candid::Reserved),
+    #[serde(rename = "responses_too_large")]
+    ResponsesTooLarge(candid::Reserved),
+}
+
+/// Per-node detail in a flexible HTTP outcall error.
+///
+/// ```text
+/// record {
+///   node_id: principal;
+///   report: http_request_resource_report;
+///   error: opt record { code: text; message: text };
+/// }
+/// ```
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub struct FlexibleHttpNodeDetail {
+    pub node_id: candid::Principal,
+    pub report: HttpRequestResourceReport,
+    pub error: Option<FlexibleHttpNodeError>,
+}
+
+/// Per-node resource usage accounting for an HTTP outcall.
+///
+/// ```text
+/// type http_request_resource_report = record {
+///   raw_response_bytes: opt variant { used: nat64; exceeded: reserved };
+///   http_roundtrip_time_ms: opt variant { used: nat64; exceeded: reserved };
+///   transform_instructions: opt variant { used: nat64; exceeded: reserved };
+///   transformed_response_bytes: opt variant { used: nat64; exceeded: reserved };
+///   cycles: opt variant { used: nat; exceeded: reserved };
+/// };
+/// ```
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub struct HttpRequestResourceReport {
+    pub raw_response_bytes: Option<ResourceUsage<u64>>,
+    pub http_roundtrip_time_ms: Option<ResourceUsage<u64>>,
+    pub transform_instructions: Option<ResourceUsage<u64>>,
+    pub transformed_response_bytes: Option<ResourceUsage<u64>>,
+    pub cycles: Option<ResourceUsage<candid::Nat>>,
+}
+
+/// Tracks whether a resource was used or exceeded its budget.
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub enum ResourceUsage<T> {
+    #[serde(rename = "used")]
+    Used(T),
+    #[serde(rename = "exceeded")]
+    Exceeded(candid::Reserved),
+}
+
+/// Error details from a specific node during a flexible HTTP outcall.
+#[derive(Clone, Eq, PartialEq, Hash, Debug, CandidType, Deserialize, Serialize)]
+pub struct FlexibleHttpNodeError {
+    pub code: String,
+    pub message: String,
+}
diff --git a/rs/types/management_canister_types/src/lib.rs b/rs/types/management_canister_types/src/lib.rs
index adf7c622d2ef..d0e079d175bf 100644
--- a/rs/types/management_canister_types/src/lib.rs
+++ b/rs/types/management_canister_types/src/lib.rs
@@ -12,9 +12,10 @@ pub use data_size::*;
 pub use http::{
     ALLOWED_HTTP_OUTCALLS_PRICING_VERSIONS, BoundedHttpHeaders, CanisterHttpRequestArgs,
     CanisterHttpResponsePayload, DEFAULT_HTTP_OUTCALLS_PRICING_VERSION,
-    FlexibleCanisterHttpRequestArgs, HttpHeader, HttpMethod, PRICING_VERSION_LEGACY,
-    PRICING_VERSION_PAY_AS_YOU_GO, ReplicationCounts, TransformArgs, TransformContext,
-    TransformFunc,
+    FlexibleCanisterHttpRequestArgs, FlexibleHttpGlobalError, FlexibleHttpNodeDetail,
+    FlexibleHttpNodeError, FlexibleHttpRequestErr, FlexibleHttpRequestResult, HttpHeader,
+    HttpMethod, HttpRequestResourceReport, PRICING_VERSION_LEGACY, PRICING_VERSION_PAY_AS_YOU_GO,
+    ReplicationCounts, ResourceUsage, TransformArgs, TransformContext, TransformFunc,
 };
 use ic_base_types::{
     CanisterId, EnvironmentVariables, NodeId, NumBytes, PrincipalId, RegistryVersion, SnapshotId,