diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index c838ca50..7f1f8733 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -33,5 +33,8 @@
 # Node Platform
 /node-platform/ @smartcontractkit/infra-nodes @smartcontractkit/op-tooling @smartcontractkit/rane
 
+# Chain Capabilities
+/chain-capabilities/ @smartcontractkit/keystone @smartcontractkit/bix-framework @smartcontractkit/op-tooling
+
 # Release changesets do not have owners
 /.changeset/**
diff --git a/.github/workflows/register-chain-capabilities-schemas.yaml b/.github/workflows/register-chain-capabilities-schemas.yaml
new file mode 100644
index 00000000..46c2d9b0
--- /dev/null
+++ b/.github/workflows/register-chain-capabilities-schemas.yaml
@@ -0,0 +1,56 @@
+name: register-chain-capabilities-schemas
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - ".github/workflows/register-chain-capabilities-schemas.yaml"
+      - "chain-capabilities/**/*.proto"
+      - "chain-capabilities/chip-schemas.json"
+      - "chain-capabilities/beholder-schemas.json"
+  pull_request:
+    paths:
+      - ".github/workflows/register-chain-capabilities-schemas.yaml"
+      - "chain-capabilities/**/*.proto"
+      - "chain-capabilities/chip-schemas.json"
+      - "chain-capabilities/beholder-schemas.json"
+
+jobs:
+  register-schemas:
+    runs-on: ubuntu-latest
+    environment: publish
+    permissions:
+      id-token: write
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - { name: chain-capabilities, file: chip-schemas.json }
+          - { name: beholder,            file: beholder-schemas.json }
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Configure AWS Credentials
+        uses: aws-actions/configure-aws-credentials@e3dd6a429d7300a6a4c196c26e071d42e0343502 # v4.0.2
+        with:
+          mask-aws-account-id: true
+          role-to-assume: ${{ secrets.AWS_IAM_ROLE_PUBLISH_ARN }}
+          aws-region: ${{ secrets.AWS_REGION }}
+
+      - name: Register Chain Capabilities Schemas for ${{ matrix.config.name }} domain
+        uses: smartcontractkit/.github/actions/chip-schema-registration@b1bec0ae729606681897cbf7fad5d7c1d572173e  # v1.1.0
+        with:
+          aws-account-id: ${{ secrets.AWS_ACCOUNT_ID_ROOT }}
+          aws-region: us-west-2
+          chip-schema-dir: "chain-capabilities"
+          chip-config-file-path: "chain-capabilities/${{ matrix.config.file }}"
+          chip-config-host: ${{ github.ref_name == 'main' && secrets.chip_config_host_prod || secrets.chip_config_host_staging }}
+          chip-config-user: ${{ secrets.chip_config_user }}
+          chip-config-password: ${{ github.ref_name == 'main' && secrets.chip_config_password_prod || secrets.chip_config_password_staging }}
+          ts-ouath-client-id: ${{ secrets.chip_config_ts_oauth_client_id }}
+          ts-ouath-secret: ${{ secrets.chip_config_ts_oauth_secret }}
diff --git a/.github/workflows/register-data-feeds-schemas.yaml b/.github/workflows/register-data-feeds-schemas.yaml
index 286b02ad..d0b3a1ff 100644
--- a/.github/workflows/register-data-feeds-schemas.yaml
+++ b/.github/workflows/register-data-feeds-schemas.yaml
@@ -11,6 +11,7 @@ on:
       - "data-feeds/chip-schemas.json"
       - "data-feeds/chip-job-spec-schemas.json"
       - "data-feeds/beholder-job-spec-schemas.json"
+      - "data-feeds/beholder-schemas.json"
   pull_request:
     paths:
       - ".github/workflows/register-data-feeds-schemas.yaml"
@@ -18,6 +19,7 @@ on:
       - "data-feeds/chip-schemas.json"
       - "data-feeds/chip-job-spec-schemas.json"
       - "data-feeds/beholder-job-spec-schemas.json"
+      - "data-feeds/beholder-schemas.json"
 
 jobs:
   register-schemas:
@@ -34,6 +36,7 @@ jobs:
           - { name: data-feeds,        file: chip-schemas.json }
           - { name: job-spec,          file: chip-job-spec-schemas.json }
           - { name: job-spec-beholder, file: beholder-job-spec-schemas.json }
+          - { name: beholder,          file: beholder-schemas.json }
 
     steps:
       - uses: actions/checkout@v5
diff --git a/buf.yaml b/buf.yaml
index 04139df6..d4eec14a 100644
--- a/buf.yaml
+++ b/buf.yaml
@@ -61,6 +61,7 @@ modules:
         - ENUM_VALUE_PREFIX
         - ENUM_ZERO_VALUE_SUFFIX
   - path: node-platform
+  - path: chain-capabilities
 
 lint:
   use:
diff --git a/chain-capabilities/beholder-schemas.json b/chain-capabilities/beholder-schemas.json
new file mode 100644
index 00000000..8b0b315c
--- /dev/null
+++ b/chain-capabilities/beholder-schemas.json
@@ -0,0 +1,38 @@
+{
+  "domain": "beholder__chain_capabilities__messages",
+  "schemas": [
+    {
+      "entity": "WriteReportInitiated",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    },
+    {
+      "entity": "WriteReportSuccess",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    },
+    {
+      "entity": "WriteReportError",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    }
+  ]
+}
diff --git a/chain-capabilities/chip-schemas.json b/chain-capabilities/chip-schemas.json
new file mode 100644
index 00000000..2afb6022
--- /dev/null
+++ b/chain-capabilities/chip-schemas.json
@@ -0,0 +1,38 @@
+{
+  "domain": "chain-capabilities",
+  "schemas": [
+    {
+      "entity": "WriteReportInitiated",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    },
+    {
+      "entity": "WriteReportSuccess",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    },
+    {
+      "entity": "WriteReportError",
+      "path": "evm/monitoring/write_report.proto",
+      "references": [
+        {
+          "name": "libs/monitoring/execution_context.proto",
+          "entity": "monitoring.ExecutionContext",
+          "path": "libs/monitoring/execution_context.proto"
+        }
+      ]
+    }
+  ]
+}
diff --git a/chain-capabilities/evm/monitoring/write_report.proto b/chain-capabilities/evm/monitoring/write_report.proto
new file mode 100644
index 00000000..b1b04e55
--- /dev/null
+++ b/chain-capabilities/evm/monitoring/write_report.proto
@@ -0,0 +1,57 @@
+// Copied from https://github.com/smartcontractkit/capabilities/blob/main/chain_capabilities/evm/monitoring/write_report.proto
+syntax = "proto3";
+
+package chain_capabilities.evm;
+
+option go_package = "github.com/smartcontractkit/chainlink-protos/chain-capabilities/evm/monitoring";
+
+import "libs/monitoring/execution_context.proto";
+
+message WriteReportInitiated {
+  WriteReportRequest req = 1;
+  monitoring.ExecutionContext execution_context = 20;
+}
+
+message WriteReportSuccess {
+  WriteReportRequest req = 1;
+  int32 log_count = 2;
+  monitoring.ExecutionContext execution_context = 20;
+}
+
+message WriteReportError {
+  WriteReportRequest req = 1;
+  string summary = 2;
+  string cause = 3;
+  monitoring.ExecutionContext execution_context = 20;
+}
+
+message WriteReportTxFeeCalculationError {
+  WriteReportRequest req = 1;
+  string summary = 2;
+  string cause = 3;
+  string tx_idempotency_key = 4;
+  monitoring.ExecutionContext execution_context = 20;
+}
+
+message WriteReportRequest {
+  bytes receiver = 1;
+  ReportResponse report = 2;
+  optional GasConfig gas_config = 3;
+}
+
+message GasConfig {
+  uint64 gas_limit = 1;
+}
+
+message ReportResponse {
+  bytes config_digest = 1;
+  uint64 seq_nr = 2;
+  bytes report_context = 3; // combination of seq_nr and config_digest
+  bytes raw_report = 4;
+  repeated AttributedSignature sigs = 5;
+}
+
+message AttributedSignature {
+  bytes signature = 1;
+  uint32 signer_id = 2;
+}
diff --git a/chain-capabilities/libs/monitoring/execution_context.proto b/chain-capabilities/libs/monitoring/execution_context.proto
new file mode 100644
index 00000000..35eed5b3
--- /dev/null
+++ b/chain-capabilities/libs/monitoring/execution_context.proto
@@ -0,0 +1,33 @@
+// Copied from https://github.com/smartcontractkit/capabilities/blob/main/libs/monitoring/execution_context.proto
+syntax = "proto3";
+
+package monitoring;
+
+option go_package = "github.com/smartcontractkit/chainlink-protos/chain-capabilities/libs/monitoring";
+
+// [Execution Context]
+message ExecutionContext {
+  // Execution Context - Source
+  string meta_source_id = 1;
+
+  // Execution Context - Chain
+  string meta_chain_family_name = 2;
+  string meta_chain_id = 3;
+  string meta_network_name = 4;
+  string meta_network_name_full = 5;
+
+  // Execution Context - Workflow (capabilities.RequestMetadata)
+  string meta_workflow_id = 6;
+  string meta_workflow_owner = 7;
+  string meta_workflow_execution_id = 8;
+  string meta_workflow_name = 9;
+  uint32 meta_workflow_don_id = 10;
+  uint32 meta_workflow_don_config_version = 11;
+  string meta_reference_id = 12;
+
+  // Execution Context - Capability
+  string meta_capability_type = 13;
+  string meta_capability_id = 14;
+  uint64 meta_capability_timestamp_start = 15;
+  uint64 meta_capability_timestamp_emit = 16;
+}
diff --git a/data-feeds/beholder-schemas.json b/data-feeds/beholder-schemas.json
new file mode 100644
index 00000000..f61459d4
--- /dev/null
+++ b/data-feeds/beholder-schemas.json
@@ -0,0 +1,9 @@
+{
+  "domain": "beholder__data_feeds__messages",
+  "schemas": [
+    {
+      "entity": "data_feeds.on_chain.registry.FeedUpdated",
+      "path": "on_chain/registry/feed_updated.proto"
+    }
+  ]
+}
diff --git a/data-feeds/chip-schemas.json b/data-feeds/chip-schemas.json
index 14e26bf1..80a8f16f 100644
--- a/data-feeds/chip-schemas.json
+++ b/data-feeds/chip-schemas.json
@@ -51,6 +51,10 @@
           "path": "bridge_status/v1/configuration_item.proto"
         }
       ]
+    },
+    {
+      "entity": "data_feeds.on_chain.registry.FeedUpdated",
+      "path": "on_chain/registry/feed_updated.proto"
     }
   ]
 }
diff --git a/data-feeds/on_chain/registry/feed_updated.proto b/data-feeds/on_chain/registry/feed_updated.proto
new file mode 100644
index 00000000..29698ea0
--- /dev/null
+++ b/data-feeds/on_chain/registry/feed_updated.proto
@@ -0,0 +1,61 @@
+// Copied from https://github.com/smartcontractkit/atlas/blob/main/schemas/atlas/proto/beholder/data-feeds/feed_updated.proto
+syntax = "proto3";
+
+package data_feeds.on_chain.registry;
+
+option go_package = "github.com/smartcontractkit/chainlink-protos/data-feeds/on_chain/registry";
+
+// The on-chain FeedUpdated event which is extracted from the tx/event data or
+// the write-target WriteConfirmed event, after a write was confirmed (@see message: write-target.WriteConfirmed).
+message FeedUpdated {
+  // Event data
+  string feed_id = 1; // bytes as hex string for readability
+  uint32 observations_timestamp = 2;
+  bytes benchmark = 3;
+  bytes report = 4;
+
+  // Notice: benchmark_val is the benchmark i192 on-chain value decoded as an double (float64), scaled by number of decimals (e.g., 1e-18)
+  // This is the largest type Prometheus supports, and this conversion can overflow but so far was sufficient
+  // for most use-cases. For big numbers, benchmark bytes should be used instead.
+  //
+  // Set as `math.NaN()` if report data type not a number, or `+/-Inf` if number doesn't fit in double.
+  double benchmark_val = 5;
+
+  // Head data - when was the event produced on-chain
+  string block_hash = 6;
+  string block_height = 7;
+  uint64 block_timestamp = 8;
+
+  // Transaction data - info about the tx that mained the event (optional)
+  string tx_id = 10; // TXM ref
+  string tx_hash = 11;
+  string tx_sender = 12;
+  string tx_receiver = 13;
+  string tx_status = 14;
+
+  // [Execution Context]
+  // TODO: replace with a proto reference once supported
+  // Execution Context - Source
+  string meta_source_id = 20;
+
+  // Execution Context - Chain
+  string meta_chain_family_name = 21;
+  string meta_chain_id = 22;
+  string meta_network_name = 23;
+  string meta_network_name_full = 24;
+
+  // Execution Context - Workflow (capabilities.RequestMetadata)
+  string meta_workflow_id = 25;
+  string meta_workflow_owner = 26;
+  string meta_workflow_execution_id = 27;
+  string meta_workflow_name = 28;
+  uint32 meta_workflow_don_id = 29;
+  uint32 meta_workflow_don_config_version = 30;
+  string meta_reference_id = 31;
+
+  // Execution Context - Capability
+  string meta_capability_type = 32;
+  string meta_capability_id = 33;
+  uint64 meta_capability_timestamp_start = 34;
+  uint64 meta_capability_timestamp_emit = 35;
+}