diff --git a/rpcs/openapi.yaml b/rpcs/openapi.yaml
index 4ddddf3..2782f3c 100644
--- a/rpcs/openapi.yaml
+++ b/rpcs/openapi.yaml
@@ -100,6 +100,8 @@ paths:
     $ref: './transaction/EXPERIMENTAL_tx_status.yaml#/paths/~1'
   /EXPERIMENTAL_receipt:
     $ref: './transaction/EXPERIMENTAL_receipt.yaml#/paths/~1'
+  /EXPERIMENTAL_receipt_to_tx:
+    $ref: './transaction/EXPERIMENTAL_receipt_to_tx.yaml#/paths/~1'
 
   # Validator operations
   /validators_current:
diff --git a/rpcs/transaction/EXPERIMENTAL_receipt_to_tx.yaml b/rpcs/transaction/EXPERIMENTAL_receipt_to_tx.yaml
new file mode 100644
index 0000000..ac0bdb0
--- /dev/null
+++ b/rpcs/transaction/EXPERIMENTAL_receipt_to_tx.yaml
@@ -0,0 +1,119 @@
+openapi: 3.1.0
+info:
+  title: "NEAR Protocol RPC: Resolve receipt to transaction"
+  description: "Resolve a receipt ID to the transaction hash and signer that produced it. Requires a node with `save_receipt_to_tx` enabled; unindexed receipts return `UNKNOWN_RECEIPT`."
+  version: 1.0.0
+servers:
+  - url: "https://rpc.mainnet.fastnear.com"
+    description: Mainnet
+  - url: "https://rpc.testnet.fastnear.com"
+    description: Testnet
+paths:
+  /:
+    post:
+      operationId: EXPERIMENTAL_receipt_to_tx
+      summary: Resolve receipt to transaction
+      description: "Resolve a receipt ID to the transaction hash and signer that produced it. Requires a node with `save_receipt_to_tx` enabled; unindexed receipts return `UNKNOWN_RECEIPT`."
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required: [jsonrpc, id, method, params]
+              properties:
+                jsonrpc:
+                  type: string
+                  enum: ["2.0"]
+                id:
+                  type: string
+                  example: fastnear
+                method:
+                  type: string
+                  enum: [EXPERIMENTAL_receipt_to_tx]
+                params:
+                  type: object
+                  properties:
+                    block_height:
+                      type: [integer, "null"]
+                      description: "Optional hint: block height near where the receipt was created, to bound the fallback scan."
+                      format: uint64
+                      minimum: 0
+                    receipt_id:
+                      type: string
+                      description: Base58-encoded receipt ID to resolve to its originating transaction.
+                    shard_id:
+                      type: [integer, "null"]
+                      description: "Optional hint: shard to scan at the hint height; omit to scan all tracked shards."
+                    window:
+                      type: [integer, "null"]
+                      description: "Optional hint: ± block-height window scanned around the hint before walking ancestor blocks."
+                      format: uint64
+                      minimum: 0
+                  required: [receipt_id]
+            examples:
+              mainnet:
+                summary: Resolve receipt to transaction (Mainnet)
+                value:
+                  jsonrpc: "2.0"
+                  id: fastnear
+                  method: EXPERIMENTAL_receipt_to_tx
+                  params:
+                    receipt_id: FcFKrKQziMPCgYMFiLMZwecBtA7vqxdkatkhc1j3GYj8
+              testnet:
+                summary: Resolve receipt to transaction (Testnet)
+                value:
+                  jsonrpc: "2.0"
+                  id: fastnear
+                  method: EXPERIMENTAL_receipt_to_tx
+                  params:
+                    block_height: null
+                    receipt_id: ExampleReceiptId
+                    shard_id: 0
+                    window: null
+      responses:
+        200:
+          description: Successful response
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/JsonRpcResponse"
+security:
+  - ApiKeyAuth: []
+components:
+  securitySchemes:
+    ApiKeyAuth:
+      type: apiKey
+      in: query
+      name: apiKey
+  schemas:
+    JsonRpcResponse:
+      type: object
+      required: [jsonrpc, id]
+      properties:
+        jsonrpc:
+          type: string
+          enum: ["2.0"]
+        id:
+          oneOf:
+            - type: string
+            - type: number
+        result:
+          type: object
+          properties:
+            sender_account_id:
+              type: string
+              description: NEAR account ID
+            transaction_hash:
+              type: string
+              description: Base58-encoded hash
+          required: [transaction_hash, sender_account_id]
+        error:
+          type: object
+          properties:
+            code:
+              type: integer
+            message:
+              type: string
+            data:
+              type: object
diff --git a/scripts/audit-page-model-routes.js b/scripts/audit-page-model-routes.js
index cea9feb..038b4e3 100644
--- a/scripts/audit-page-model-routes.js
+++ b/scripts/audit-page-model-routes.js
@@ -11,7 +11,7 @@ const EXPECTED_FAMILY_COUNTS = {
   "rpcs/block": 3,
   "rpcs/contract": 5,
   "rpcs/protocol": 20,
-  "rpcs/transaction": 6,
+  "rpcs/transaction": 7,
   "rpcs/validators": 3,
   "apis/fastnear": 14,
   "apis/kv-fastdata": 9,
diff --git a/scripts/nearcore-operation-map.js b/scripts/nearcore-operation-map.js
index 646ba95..f1e2080 100644
--- a/scripts/nearcore-operation-map.js
+++ b/scripts/nearcore-operation-map.js
@@ -578,6 +578,28 @@ const OPERATIONS = [
       },
     },
   },
+  {
+    type: 'simple',
+    nearcorePath: '/EXPERIMENTAL_receipt_to_tx',
+    file: 'transaction/EXPERIMENTAL_receipt_to_tx.yaml',
+    category: 'transaction',
+    operationId: 'EXPERIMENTAL_receipt_to_tx',
+    summary: 'Resolve receipt to transaction',
+    description: "Resolve a receipt ID to the transaction hash and signer that produced it. Requires a node with `save_receipt_to_tx` enabled; unindexed receipts return `UNKNOWN_RECEIPT`.",
+    fieldDescriptions: {
+      request: {
+        receipt_id: 'Base58-encoded receipt ID to resolve to its originating transaction.',
+        block_height: 'Optional hint: block height near where the receipt was created, to bound the fallback scan.',
+        shard_id: 'Optional hint: shard to scan at the hint height; omit to scan all tracked shards.',
+        window: 'Optional hint: ± block-height window scanned around the hint before walking ancestor blocks.',
+      },
+    },
+    exampleParamsByNetwork: {
+      mainnet: {
+        receipt_id: 'FcFKrKQziMPCgYMFiLMZwecBtA7vqxdkatkhc1j3GYj8',
+      },
+    },
+  },
   {
     type: 'simple',
     nearcorePath: '/EXPERIMENTAL_protocol_config',
diff --git a/scripts/rpc-example-config.js b/scripts/rpc-example-config.js
index 633d371..4476122 100644
--- a/scripts/rpc-example-config.js
+++ b/scripts/rpc-example-config.js
@@ -114,7 +114,19 @@ const CURATED_RPC_EXAMPLE_PARAMS = {
   },
 };
 
-const ALLOWED_RPC_PLACEHOLDERS = {};
+const ALLOWED_RPC_PLACEHOLDERS = {
+  // No curated testnet receipt yet; mainnet uses a real receipt id. Allow the
+  // generated placeholder on testnet until a real, index-resolvable testnet
+  // example is curated.
+  EXPERIMENTAL_receipt_to_tx: {
+    testnet: {
+      receipt_id: {
+        value: 'ExampleReceiptId',
+        reason: 'No curated testnet receipt yet; mainnet uses a real receipt id.',
+      },
+    },
+  },
+};
 
 const MANUAL_RPC_EXAMPLE_OVERRIDES = {
   EXPERIMENTAL_protocol_config: {
@@ -159,7 +171,21 @@ const MANUAL_RPC_EXAMPLE_OVERRIDES = {
   },
 };
 
-const AUDIT_SKIPS = {};
+const AUDIT_SKIPS = {
+  // receipt→tx resolution needs a save_receipt_to_tx-enabled node with the
+  // receipt still indexed; the public RPC returns UNKNOWN_RECEIPT otherwise, so
+  // the example is representative-only and excluded from the live audit.
+  EXPERIMENTAL_receipt_to_tx: {
+    mainnet: {
+      skip: true,
+      reason: 'Requires a save_receipt_to_tx-enabled node with the receipt indexed; returns UNKNOWN_RECEIPT otherwise.',
+    },
+    testnet: {
+      skip: true,
+      reason: 'Requires a save_receipt_to_tx-enabled node with the receipt indexed; returns UNKNOWN_RECEIPT otherwise.',
+    },
+  },
+};
 
 function cloneJson(value) {
   if (value === undefined) {
diff --git a/scripts/structured-graph-common.js b/scripts/structured-graph-common.js
index eebe73e..768ffb5 100644
--- a/scripts/structured-graph-common.js
+++ b/scripts/structured-graph-common.js
@@ -131,7 +131,7 @@ const EXPECTED_FAMILY_OPERATION_COUNTS = {
   "rpc-block": 3,
   "rpc-contract": 5,
   "rpc-protocol": 20,
-  "rpc-transaction": 6,
+  "rpc-transaction": 7,
   "rpc-validators": 3,
 };
 
diff --git a/shared/generatedFastnearPageModels.json b/shared/generatedFastnearPageModels.json
index 64f8eef..fb9d630 100644
--- a/shared/generatedFastnearPageModels.json
+++ b/shared/generatedFastnearPageModels.json
@@ -11883,6 +11883,353 @@
     ],
     "sourceSpec": "rpcs/transaction/EXPERIMENTAL_receipt.yaml"
   },
+  {
+    "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx",
+    "info": {
+      "description": "Resolve a receipt ID to the transaction hash and signer that produced it. Requires a node with `save_receipt_to_tx` enabled; unindexed receipts return `UNKNOWN_RECEIPT`.",
+      "operationId": "EXPERIMENTAL_receipt_to_tx",
+      "summary": "Resolve receipt to transaction",
+      "title": "NEAR Protocol RPC: Resolve receipt to transaction",
+      "version": "1.0.0"
+    },
+    "interaction": {
+      "authTransport": "bearer",
+      "defaultId": "fastnear",
+      "fields": [
+        {
+          "description": "Optional hint: block height near where the receipt was created, to bound the fallback scan.",
+          "label": "Block Height",
+          "location": "body",
+          "name": "block_height",
+          "required": false,
+          "schema": {
+            "type": "integer",
+            "nullable": true,
+            "description": "Optional hint: block height near where the receipt was created, to bound the fallback scan.",
+            "format": "uint64"
+          }
+        },
+        {
+          "description": "Base58-encoded receipt ID to resolve to its originating transaction.",
+          "label": "Receipt Id",
+          "location": "body",
+          "name": "receipt_id",
+          "required": true,
+          "schema": {
+            "type": "string",
+            "description": "Base58-encoded receipt ID to resolve to its originating transaction."
+          }
+        },
+        {
+          "description": "Optional hint: shard to scan at the hint height; omit to scan all tracked shards.",
+          "label": "Shard Id",
+          "location": "body",
+          "name": "shard_id",
+          "required": false,
+          "schema": {
+            "type": "integer",
+            "nullable": true,
+            "description": "Optional hint: shard to scan at the hint height; omit to scan all tracked shards."
+          }
+        },
+        {
+          "description": "Optional hint: ± block-height window scanned around the hint before walking ancestor blocks.",
+          "label": "Window",
+          "location": "body",
+          "name": "window",
+          "required": false,
+          "schema": {
+            "type": "integer",
+            "nullable": true,
+            "description": "Optional hint: ± block-height window scanned around the hint before walking ancestor blocks.",
+            "format": "uint64"
+          }
+        }
+      ],
+      "kind": "rpc-EXPERIMENTAL-receipt-to-tx",
+      "networks": [
+        {
+          "defaultFields": {
+            "receipt_id": "FcFKrKQziMPCgYMFiLMZwecBtA7vqxdkatkhc1j3GYj8"
+          },
+          "key": "mainnet",
+          "label": "Mainnet",
+          "url": "https://rpc.mainnet.fastnear.com"
+        },
+        {
+          "defaultFields": {
+            "receipt_id": "ExampleReceiptId",
+            "shard_id": 0
+          },
+          "key": "testnet",
+          "label": "Testnet",
+          "url": "https://rpc.testnet.fastnear.com"
+        }
+      ],
+      "requestMethod": "EXPERIMENTAL_receipt_to_tx",
+      "supportsFinality": false,
+      "transport": "json-rpc"
+    },
+    "pageModelId": "rpc-EXPERIMENTAL-receipt-to-tx",
+    "replaceOperationPage": true,
+    "request": {
+      "bodySchema": {
+        "type": "object",
+        "required": [
+          "jsonrpc",
+          "id",
+          "method",
+          "params"
+        ],
+        "properties": [
+          {
+            "name": "jsonrpc",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "enum": [
+                "2.0"
+              ]
+            }
+          },
+          {
+            "name": "id",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "example": "fastnear"
+            }
+          },
+          {
+            "name": "method",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "enum": [
+                "EXPERIMENTAL_receipt_to_tx"
+              ]
+            }
+          },
+          {
+            "name": "params",
+            "required": true,
+            "schema": {
+              "type": "object",
+              "required": [
+                "receipt_id"
+              ],
+              "properties": [
+                {
+                  "name": "block_height",
+                  "required": false,
+                  "schema": {
+                    "type": "integer",
+                    "nullable": true,
+                    "description": "Optional hint: block height near where the receipt was created, to bound the fallback scan.",
+                    "format": "uint64"
+                  }
+                },
+                {
+                  "name": "receipt_id",
+                  "required": true,
+                  "schema": {
+                    "type": "string",
+                    "description": "Base58-encoded receipt ID to resolve to its originating transaction."
+                  }
+                },
+                {
+                  "name": "shard_id",
+                  "required": false,
+                  "schema": {
+                    "type": "integer",
+                    "nullable": true,
+                    "description": "Optional hint: shard to scan at the hint height; omit to scan all tracked shards."
+                  }
+                },
+                {
+                  "name": "window",
+                  "required": false,
+                  "schema": {
+                    "type": "integer",
+                    "nullable": true,
+                    "description": "Optional hint: ± block-height window scanned around the hint before walking ancestor blocks.",
+                    "format": "uint64"
+                  }
+                }
+              ]
+            }
+          }
+        ]
+      },
+      "examples": [
+        {
+          "id": "mainnet",
+          "label": "Resolve receipt to transaction (Mainnet)",
+          "network": "mainnet",
+          "request": {
+            "body": {
+              "jsonrpc": "2.0",
+              "id": "fastnear",
+              "method": "EXPERIMENTAL_receipt_to_tx",
+              "params": {
+                "receipt_id": "FcFKrKQziMPCgYMFiLMZwecBtA7vqxdkatkhc1j3GYj8"
+              }
+            },
+            "headers": {},
+            "path": {},
+            "query": {}
+          }
+        },
+        {
+          "id": "testnet",
+          "label": "Resolve receipt to transaction (Testnet)",
+          "network": "testnet",
+          "request": {
+            "body": {
+              "jsonrpc": "2.0",
+              "id": "fastnear",
+              "method": "EXPERIMENTAL_receipt_to_tx",
+              "params": {
+                "block_height": null,
+                "receipt_id": "ExampleReceiptId",
+                "shard_id": 0,
+                "window": null
+              }
+            },
+            "headers": {},
+            "path": {},
+            "query": {}
+          }
+        }
+      ],
+      "mediaType": "application/json",
+      "parameters": {
+        "header": [],
+        "path": [],
+        "query": []
+      },
+      "required": true
+    },
+    "responses": [
+      {
+        "description": "Successful response",
+        "mediaType": "application/json",
+        "schema": {
+          "type": "object",
+          "required": [
+            "jsonrpc",
+            "id"
+          ],
+          "properties": [
+            {
+              "name": "jsonrpc",
+              "required": true,
+              "schema": {
+                "type": "string",
+                "enum": [
+                  "2.0"
+                ]
+              }
+            },
+            {
+              "name": "id",
+              "required": true,
+              "schema": {
+                "oneOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ]
+              }
+            },
+            {
+              "name": "result",
+              "required": false,
+              "schema": {
+                "type": "object",
+                "required": [
+                  "transaction_hash",
+                  "sender_account_id"
+                ],
+                "properties": [
+                  {
+                    "name": "sender_account_id",
+                    "required": true,
+                    "schema": {
+                      "type": "string",
+                      "description": "NEAR account ID"
+                    }
+                  },
+                  {
+                    "name": "transaction_hash",
+                    "required": true,
+                    "schema": {
+                      "type": "string",
+                      "description": "Base58-encoded hash"
+                    }
+                  }
+                ]
+              }
+            },
+            {
+              "name": "error",
+              "required": false,
+              "schema": {
+                "type": "object",
+                "properties": [
+                  {
+                    "name": "code",
+                    "required": false,
+                    "schema": {
+                      "type": "integer"
+                    }
+                  },
+                  {
+                    "name": "message",
+                    "required": false,
+                    "schema": {
+                      "type": "string"
+                    }
+                  },
+                  {
+                    "name": "data",
+                    "required": false,
+                    "schema": {
+                      "type": "object"
+                    }
+                  }
+                ]
+              }
+            }
+          ],
+          "refName": "JsonRpcResponse"
+        },
+        "status": "200"
+      }
+    ],
+    "route": {
+      "method": "POST",
+      "path": "/",
+      "transport": "json-rpc"
+    },
+    "routeAliases": [
+      "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx/other/EXPERIMENTAL_receipt_to_tx",
+      "/reference/operation/EXPERIMENTAL_receipt_to_tx"
+    ],
+    "securitySchemes": [
+      {
+        "description": "The OpenAPI contract describes the FastNEAR API key as a query parameter named apiKey.",
+        "id": "ApiKeyAuth",
+        "in": "query",
+        "name": "apiKey",
+        "type": "apiKey"
+      }
+    ],
+    "sourceSpec": "rpcs/transaction/EXPERIMENTAL_receipt_to_tx.yaml"
+  },
   {
     "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_tx_status",
     "info": {
diff --git a/shared/generatedFastnearStructuredGraph.json b/shared/generatedFastnearStructuredGraph.json
index db664da..225eab2 100644
--- a/shared/generatedFastnearStructuredGraph.json
+++ b/shared/generatedFastnearStructuredGraph.json
@@ -1008,6 +1008,20 @@
       ],
       "pageModelId": "rpc-EXPERIMENTAL-receipt"
     },
+    {
+      "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx",
+      "items": [
+        {
+          "label": "Transaction RPC",
+          "path": "/rpc"
+        },
+        {
+          "label": "Resolve receipt to transaction",
+          "path": "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx"
+        }
+      ],
+      "pageModelId": "rpc-EXPERIMENTAL-receipt-to-tx"
+    },
     {
       "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_tx_status",
       "items": [
@@ -1210,7 +1224,7 @@
       "branch": "HEAD",
       "commitSha": "499283a5e3a6f8ea52bc068c28e3a7bebb1e38c0",
       "dirty": true,
-      "generatedAt": "2026-07-14T21:45:20.697Z",
+      "generatedAt": "2026-07-15T15:19:36.945Z",
       "releaseUrl": "https://github.com/near/nearcore/releases/tag/2.13.0",
       "repoRoot": "../nearcore",
       "repoUrl": "https://github.com/near/nearcore",
@@ -3127,6 +3141,33 @@
       "summary": "Get receipt by ID",
       "transport": "json-rpc"
     },
+    {
+      "authSummary": "API key via query apiKey",
+      "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx",
+      "description": "Resolve a receipt ID to the transaction hash and signer that produced it. Requires a node with `save_receipt_to_tx` enabled; unindexed receipts return `UNKNOWN_RECEIPT`.",
+      "docsPath": "/rpc/transaction/experimental-receipt-to-tx",
+      "familyId": "rpc-transaction",
+      "headline": "NEAR Protocol RPC: Resolve receipt to transaction",
+      "httpMethod": "POST",
+      "id": "rpc-EXPERIMENTAL-receipt-to-tx",
+      "name": "NEAR Protocol RPC: Resolve receipt to transaction",
+      "networkKeys": [
+        "mainnet",
+        "testnet"
+      ],
+      "operationId": "EXPERIMENTAL_receipt_to_tx",
+      "pageModelId": "rpc-EXPERIMENTAL-receipt-to-tx",
+      "requestPath": "/",
+      "requestType": null,
+      "routeAliases": [
+        "/rpcs/transaction/EXPERIMENTAL_receipt_to_tx/other/EXPERIMENTAL_receipt_to_tx",
+        "/reference/operation/EXPERIMENTAL_receipt_to_tx"
+      ],
+      "schemaType": "APIReference",
+      "sourceSpec": "rpcs/transaction/EXPERIMENTAL_receipt_to_tx.yaml",
+      "summary": "Resolve receipt to transaction",
+      "transport": "json-rpc"
+    },
     {
       "authSummary": "API key via query apiKey",
       "canonicalPath": "/rpcs/transaction/EXPERIMENTAL_tx_status",