diff --git a/packages/capabilities/src/types.ts b/packages/capabilities/src/types.ts
index c32535993..99baed206 100644
--- a/packages/capabilities/src/types.ts
+++ b/packages/capabilities/src/types.ts
@@ -230,7 +230,10 @@ export interface FilecoinSubmitSuccess {
 
 export type FilecoinSubmitFailure = InvalidPieceCID | Ucanto.Failure
 
-export type FilecoinAcceptSuccess = DataAggregationProof
+export interface FilecoinAcceptSuccess extends DataAggregationProof {
+  aggregate: PieceLink
+  piece: PieceLink
+}
 
 export type FilecoinAcceptFailure =
   | InvalidContentPiece
@@ -280,7 +283,9 @@ export interface AggregateOfferSuccess {
 }
 export type AggregateOfferFailure = Ucanto.Failure
 
-export type AggregateAcceptSuccess = DealMetadata
+export interface AggregateAcceptSuccess extends DealMetadata {
+  aggregate: PieceLink
+}
 export type AggregateAcceptFailure = InvalidPiece | Ucanto.Failure
 
 export interface InvalidPiece extends Ucanto.Failure {
diff --git a/packages/filecoin-api/src/dealer/service.js b/packages/filecoin-api/src/dealer/service.js
index f91853ac0..fedc59b96 100644
--- a/packages/filecoin-api/src/dealer/service.js
+++ b/packages/filecoin-api/src/dealer/service.js
@@ -109,6 +109,7 @@ export const aggregateAccept = async ({ capability }, context) => {
 
   return {
     ok: {
+      aggregate,
       dataSource: get.ok.deal.dataSource,
       dataType: get.ok.deal.dataType,
     },
diff --git a/packages/filecoin-api/src/storefront/service.js b/packages/filecoin-api/src/storefront/service.js
index 6cab51f62..071a1010d 100644
--- a/packages/filecoin-api/src/storefront/service.js
+++ b/packages/filecoin-api/src/storefront/service.js
@@ -141,7 +141,22 @@ export const filecoinAccept = async ({ capability }, context) => {
     })
     .delegate()
 
-  return await findDataAggregationProof(context, fx.link())
+  const dataAggregationProof = await findDataAggregationProof(
+    context,
+    fx.link()
+  )
+  if (dataAggregationProof.error) {
+    return { error: new ProofNotFound(dataAggregationProof.error.message) }
+  }
+
+  return {
+    ok: {
+      aux: dataAggregationProof.ok.aux,
+      inclusion: dataAggregationProof.ok.inclusion,
+      piece,
+      aggregate: dataAggregationProof.ok.aggregate,
+    },
+  }
 }
 
 /**
@@ -154,13 +169,13 @@ export const filecoinAccept = async ({ capability }, context) => {
  *   receiptStore: API.Store<import('@ucanto/interface').UnknownLink, API.UcantoInterface.Receipt>
  * }} stores
  * @param {API.UcantoInterface.Link} task
- * @returns {Promise<API.UcantoInterface.Result<API.DataAggregationProof, API.StoreOperationError|ProofNotFound>>}
+ * @returns {Promise<API.UcantoInterface.Result<API.DataAggregationProof & { aggregate: import('@web3-storage/data-segment').PieceLink}, API.StoreOperationError|ProofNotFound>>}
  */
 async function findDataAggregationProof({ taskStore, receiptStore }, task) {
   /** @type {API.InclusionProof|undefined} */
   let inclusion
-  /** @type {API.DealMetadata|undefined} */
-  let dataAggregation
+  /** @type {API.AggregateAcceptSuccess|undefined} */
+  let aggregateAcceptReceipt
   while (true) {
     const [taskRes, receiptRes] = await Promise.all([
       taskStore.get(task),
@@ -184,7 +199,7 @@ async function findDataAggregationProof({ taskStore, receiptStore }, task) {
     if (ability === 'piece/accept' && receiptRes.ok.out.ok) {
       inclusion = receiptRes.ok.out.ok.inclusion
     } else if (ability === 'aggregate/accept' && receiptRes.ok.out.ok) {
-      dataAggregation = receiptRes.ok.out.ok
+      aggregateAcceptReceipt = receiptRes.ok.out.ok
     }
     if (!receiptRes.ok.fx.join) break
     task = receiptRes.ok.fx.join
@@ -196,10 +211,19 @@ async function findDataAggregationProof({ taskStore, receiptStore }, task) {
       ),
     }
   }
-  if (!dataAggregation) {
+  if (!aggregateAcceptReceipt) {
     return { error: new ProofNotFound('missing data aggregation proof') }
   }
-  return { ok: { aux: dataAggregation, inclusion } }
+  return {
+    ok: {
+      aux: {
+        dataSource: aggregateAcceptReceipt.dataSource,
+        dataType: aggregateAcceptReceipt.dataType,
+      },
+      aggregate: aggregateAcceptReceipt.aggregate,
+      inclusion,
+    },
+  }
 }
 
 export const ProofNotFoundName = /** @type {const} */ ('ProofNotFound')
diff --git a/packages/filecoin-api/test/context/receipts.js b/packages/filecoin-api/test/context/receipts.js
index c078ab141..6f5f859ed 100644
--- a/packages/filecoin-api/test/context/receipts.js
+++ b/packages/filecoin-api/test/context/receipts.js
@@ -14,7 +14,7 @@ import * as API from '../../src/types.js'
  * @param {API.PieceLink} context.piece
  * @param {import('@ucanto/interface').Block} context.piecesBlock
  * @param {API.InclusionProof} context.inclusionProof
- * @param {API.AggregateAcceptSuccess} context.dealMetadata
+ * @param {API.AggregateAcceptSuccess} context.aggregateAcceptStatus
  */
 export async function createInvocationsAndReceiptsForDealDataProofChain({
   storefront,
@@ -25,7 +25,7 @@ export async function createInvocationsAndReceiptsForDealDataProofChain({
   piece,
   piecesBlock,
   inclusionProof,
-  dealMetadata,
+  aggregateAcceptStatus,
 }) {
   const pieceOfferInvocation = await AggregatorCaps.pieceOffer
     .invoke({
@@ -124,7 +124,7 @@ export async function createInvocationsAndReceiptsForDealDataProofChain({
     issuer: dealer,
     ran: aggregateAcceptInvocation.cid,
     result: {
-      ok: /** @type {API.AggregateAcceptSuccess} */ (dealMetadata),
+      ok: /** @type {API.AggregateAcceptSuccess} */ (aggregateAcceptStatus),
     },
   })
 
diff --git a/packages/filecoin-api/test/context/service.js b/packages/filecoin-api/test/context/service.js
index ad5b042b5..f58d98553 100644
--- a/packages/filecoin-api/test/context/service.js
+++ b/packages/filecoin-api/test/context/service.js
@@ -47,6 +47,7 @@ export function getMockService() {
           }
 
           return Server.ok({
+            aggregate: invCap.nb.aggregate,
             dataSource: {
               dealID: 15151n,
             },
@@ -159,6 +160,8 @@ export function getMockService() {
 
           /** @type {API.UcantoInterface.OkBuilder<API.FilecoinAcceptSuccess, API.FilecoinAcceptFailure>} */
           const result = Server.ok({
+            piece: invCap.nb.piece,
+            aggregate: invCap.nb.piece,
             inclusion: {
               subtree:
                 /** @type {import('@web3-storage/data-segment').ProofData} */ [
diff --git a/packages/filecoin-api/test/events/storefront.js b/packages/filecoin-api/test/events/storefront.js
index a2b6197a4..f502b0c46 100644
--- a/packages/filecoin-api/test/events/storefront.js
+++ b/packages/filecoin-api/test/events/storefront.js
@@ -368,7 +368,10 @@ export const test = {
           subtree: inclusionProof.ok[0],
           index: inclusionProof.ok[1],
         },
-        dealMetadata,
+        aggregateAcceptStatus: {
+          ...dealMetadata,
+          aggregate: aggregate.link,
+        },
       })
 
     // Store all invocations and receipts, except for the very last receipt on the chain
diff --git a/packages/filecoin-api/test/services/storefront.js b/packages/filecoin-api/test/services/storefront.js
index 91035f953..6754d9557 100644
--- a/packages/filecoin-api/test/services/storefront.js
+++ b/packages/filecoin-api/test/services/storefront.js
@@ -368,7 +368,10 @@ export const test = {
           subtree: inclusionProof.ok[0],
           index: inclusionProof.ok[1],
         },
-        dealMetadata,
+        aggregateAcceptStatus: {
+          ...dealMetadata,
+          aggregate: aggregate.link,
+        },
       })
 
     const storedInvocationsAndReceiptsRes = await storeInvocationsAndReceipts({