diff --git a/packages/api/src/beacon/routes/beacon/block.ts b/packages/api/src/beacon/routes/beacon/block.ts
index c4199f505bb2..98b0035e2771 100644
--- a/packages/api/src/beacon/routes/beacon/block.ts
+++ b/packages/api/src/beacon/routes/beacon/block.ts
@@ -226,6 +226,20 @@ export type Endpoints = {
     EmptyMeta
   >;
 
+  /**
+   * Publish signed execution payload bid.
+   * Instructs the beacon node to broadcast a signed execution payload bid to the network,
+   * to be gossiped for potential inclusion in block building. A success response (20x) indicates
+   * that the bid passed gossip validation and was successfully broadcast onto the network.
+   */
+  publishExecutionPayloadBid: Endpoint<
+    "POST",
+    {signedExecutionPayloadBid: gloas.SignedExecutionPayloadBid},
+    {body: unknown; headers: {[MetaHeader.Version]: string}},
+    EmptyResponseData,
+    EmptyMeta
+  >;
+
   /**
    * Get signed execution payload envelope.
    * Retrieves signed execution payload envelope for a given block id.
@@ -646,6 +660,50 @@ export function getDefinitions(config: ChainForkConfig): RouteDefinitions<Endpoi
         requestWireFormat: WireFormat.ssz,
       },
     },
+    publishExecutionPayloadBid: {
+      url: "/eth/v1/beacon/execution_payload_bid",
+      method: "POST",
+      req: {
+        writeReqJson: ({signedExecutionPayloadBid}) => {
+          const fork = config.getForkName(signedExecutionPayloadBid.message.slot);
+          return {
+            body: getPostGloasForkTypes(fork).SignedExecutionPayloadBid.toJson(signedExecutionPayloadBid),
+            headers: {
+              [MetaHeader.Version]: fork,
+            },
+          };
+        },
+        parseReqJson: ({body, headers}) => {
+          const fork = toForkName(fromHeaders(headers, MetaHeader.Version));
+          return {
+            signedExecutionPayloadBid: getPostGloasForkTypes(fork).SignedExecutionPayloadBid.fromJson(body),
+          };
+        },
+        writeReqSsz: ({signedExecutionPayloadBid}) => {
+          const fork = config.getForkName(signedExecutionPayloadBid.message.slot);
+          return {
+            body: getPostGloasForkTypes(fork).SignedExecutionPayloadBid.serialize(signedExecutionPayloadBid),
+            headers: {
+              [MetaHeader.Version]: fork,
+            },
+          };
+        },
+        parseReqSsz: ({body, headers}) => {
+          const fork = toForkName(fromHeaders(headers, MetaHeader.Version));
+          return {
+            signedExecutionPayloadBid: getPostGloasForkTypes(fork).SignedExecutionPayloadBid.deserialize(body),
+          };
+        },
+        schema: {
+          body: Schema.Object,
+          headers: {[MetaHeader.Version]: Schema.String},
+        },
+      },
+      resp: EmptyResponseCodec,
+      init: {
+        requestWireFormat: WireFormat.ssz,
+      },
+    },
     getSignedExecutionPayloadEnvelope: {
       url: "/eth/v1/beacon/execution_payload_envelope/{block_id}",
       method: "GET",
diff --git a/packages/api/test/unit/beacon/oapiSpec.test.ts b/packages/api/test/unit/beacon/oapiSpec.test.ts
index e7bf00e854a3..62e9d4829158 100644
--- a/packages/api/test/unit/beacon/oapiSpec.test.ts
+++ b/packages/api/test/unit/beacon/oapiSpec.test.ts
@@ -56,7 +56,6 @@ const ignoredOperations = [
   "getDepositSnapshot", // Won't fix for now, see https://github.com/ChainSafe/lodestar/issues/5697
   "getNextWithdrawals", // https://github.com/ChainSafe/lodestar/issues/5696
   // TODO GLOAS: required by v5.0.0-alpha.1
-  "publishExecutionPayloadBid",
   "getExecutionPayloadBid",
   "getSignedExecutionPayloadEnvelope",
 ];
diff --git a/packages/api/test/unit/beacon/testData/beacon.ts b/packages/api/test/unit/beacon/testData/beacon.ts
index 412eadd1a0dc..7fb5c4e956fd 100644
--- a/packages/api/test/unit/beacon/testData/beacon.ts
+++ b/packages/api/test/unit/beacon/testData/beacon.ts
@@ -95,6 +95,10 @@ export const testData: GenericServerTestCases<Endpoints> = {
     args: {signedExecutionPayloadEnvelope: ssz.gloas.SignedExecutionPayloadEnvelope.defaultValue()},
     res: undefined,
   },
+  publishExecutionPayloadBid: {
+    args: {signedExecutionPayloadBid: ssz.gloas.SignedExecutionPayloadBid.defaultValue()},
+    res: undefined,
+  },
   getSignedExecutionPayloadEnvelope: {
     args: {blockId: "head"},
     res: {
diff --git a/packages/beacon-node/src/api/impl/beacon/blocks/index.ts b/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
index 5b6aca40d50a..8c4b0d0950b5 100644
--- a/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
+++ b/packages/beacon-node/src/api/impl/beacon/blocks/index.ts
@@ -32,6 +32,7 @@ import {
   fulu,
   gloas,
   isDenebBlockContents,
+  ssz,
   sszTypesFor,
 } from "@lodestar/types";
 import {fromHex, sleep, toHex, toRootHex} from "@lodestar/utils";
@@ -41,7 +42,14 @@ import {ImportBlockOpts} from "../../../../chain/blocks/types.js";
 import {verifyBlocksInEpoch} from "../../../../chain/blocks/verifyBlock.js";
 import {BeaconChain} from "../../../../chain/chain.js";
 import {ChainEvent} from "../../../../chain/emitter.js";
-import {BlockError, BlockErrorCode, BlockGossipError} from "../../../../chain/errors/index.js";
+import {
+  BlockError,
+  BlockErrorCode,
+  BlockGossipError,
+  ExecutionPayloadBidError,
+  ExecutionPayloadBidErrorCode,
+  GossipAction,
+} from "../../../../chain/errors/index.js";
 import {
   BlockType,
   ProduceFullBellatrix,
@@ -50,6 +58,7 @@ import {
   ProduceFullGloas,
 } from "../../../../chain/produceBlock/index.js";
 import {validateGossipBlock} from "../../../../chain/validation/block.js";
+import {validateApiExecutionPayloadBid} from "../../../../chain/validation/executionPayloadBid.js";
 import {validateApiExecutionPayloadEnvelope} from "../../../../chain/validation/executionPayloadEnvelope.js";
 import {OpSource} from "../../../../chain/validatorMonitor.js";
 import {
@@ -825,6 +834,47 @@ export function getBeaconBlockApi({
       });
     },
 
+    async publishExecutionPayloadBid({signedExecutionPayloadBid}) {
+      const fork = config.getForkName(signedExecutionPayloadBid.message.slot);
+      if (!isForkPostGloas(fork)) {
+        throw new ApiError(400, `publishExecutionPayloadBid not supported for pre-gloas fork=${fork}`);
+      }
+
+      const logCtx = {
+        slot: signedExecutionPayloadBid.message.slot,
+        builderIndex: signedExecutionPayloadBid.message.builderIndex,
+      };
+
+      try {
+        const {proposerIndex} = await validateApiExecutionPayloadBid(chain, signedExecutionPayloadBid);
+
+        const insertOutcome = chain.executionPayloadBidPool.add(signedExecutionPayloadBid.message);
+        metrics?.opPool.executionPayloadBidPool.apiInsertOutcome.inc({insertOutcome});
+
+        chain.validatorMonitor?.registerExecutionPayloadBid(
+          OpSource.api,
+          proposerIndex,
+          signedExecutionPayloadBid.message
+        );
+        await network.publishExecutionPayloadBid(signedExecutionPayloadBid);
+
+        chain.emitter.emit(routes.events.EventType.executionPayloadBid, {
+          version: fork,
+          data: signedExecutionPayloadBid,
+        });
+      } catch (e) {
+        if (e instanceof ExecutionPayloadBidError && e.type.code === ExecutionPayloadBidErrorCode.BID_ALREADY_KNOWN) {
+          chain.logger.debug("Ignoring known execution payload bid", logCtx);
+          return;
+        }
+        chain.logger.verbose("Error on publishExecutionPayloadBid", logCtx, e as Error);
+        if (e instanceof ExecutionPayloadBidError && e.action === GossipAction.REJECT) {
+          chain.persistInvalidSszValue(ssz.gloas.SignedExecutionPayloadBid, signedExecutionPayloadBid, "api_reject");
+        }
+        throw e;
+      }
+    },
+
     async getSignedExecutionPayloadEnvelope({blockId}, context) {
       const {block, executionOptimistic, finalized} = await getBlockResponse(chain, blockId);
       const slot = block.message.slot;
diff --git a/packages/beacon-node/src/network/interface.ts b/packages/beacon-node/src/network/interface.ts
index 9794b40bfd98..d58815f3d6cc 100644
--- a/packages/beacon-node/src/network/interface.ts
+++ b/packages/beacon-node/src/network/interface.ts
@@ -115,6 +115,7 @@ export interface INetwork extends INetworkCorePublic {
   publishSignedExecutionPayloadEnvelope(signedEnvelope: gloas.SignedExecutionPayloadEnvelope): Promise<number>;
   publishPayloadAttestationMessage(payloadAttestationMessage: gloas.PayloadAttestationMessage): Promise<number>;
   publishProposerPreferences(signedProposerPreferences: gloas.SignedProposerPreferences): Promise<number>;
+  publishExecutionPayloadBid(signedExecutionPayloadBid: gloas.SignedExecutionPayloadBid): Promise<number>;
 
   // Debug
   dumpGossipQueue(gossipType: GossipType): Promise<PendingGossipsubMessage[]>;
diff --git a/packages/beacon-node/src/network/network.ts b/packages/beacon-node/src/network/network.ts
index 1d184d210a65..2370a45f0eae 100644
--- a/packages/beacon-node/src/network/network.ts
+++ b/packages/beacon-node/src/network/network.ts
@@ -537,6 +537,17 @@ export class Network implements INetwork {
     );
   }
 
+  async publishExecutionPayloadBid(signedExecutionPayloadBid: gloas.SignedExecutionPayloadBid): Promise<number> {
+    const epoch = computeEpochAtSlot(signedExecutionPayloadBid.message.slot);
+    const boundary = this.config.getForkBoundaryAtEpoch(epoch);
+
+    return this.publishGossip<GossipType.execution_payload_bid>(
+      {type: GossipType.execution_payload_bid, boundary},
+      signedExecutionPayloadBid,
+      {ignoreDuplicatePublishError: true}
+    );
+  }
+
   private async publishGossip<K extends GossipType>(
     topic: GossipTopicMap[K],
     object: GossipTypeMap[K],