diff --git a/memory-bank/change-log.md b/memory-bank/change-log.md
index 9e63b68c..7665a61c 100644
--- a/memory-bank/change-log.md
+++ b/memory-bank/change-log.md
@@ -129,3 +129,49 @@ Follow-ups:
 
 - Continue with remaining non-standard API outlier(s), notably `pages/api/file/generateappealpdfcopy.js`.
 - Keep future slices logged in this file at commit-time now that memory-bank is versioned.
+
+---
+
+### CL-004: TASK22224 file + static endpoint contract hardening bundle (phase21)
+
+date: 2026-03-23  
+author: Cline  
+scope: `pages/api/file/{downloadblob,generateappealpdfcopy}.js`, `pages/api/endpoint/{getsipsmedia_api,getappealtypesfornewappeal_api}.js`, `tests/phase21/{file-handler-contract,endpoint-handler-contract}.test.cjs`  
+type: change  
+rationale: Deliver the agreed larger bounded slice for remaining non-standard file/static handlers, improving negative-path consistency while preserving current success payload behavior.  
+impact: Standardized error envelopes/codes for download and generated PDF copy flows, method guard parity for static endpoints, and expanded phase21 contract coverage for both file and endpoint handlers.  
+status: completed
+
+Summary:
+
+- `downloadblob.js`:
+    - added explicit catch-path response via `respondError` with `DOWNLOAD_BLOB_FAILED`
+    - kept success behavior intact (attachment header + raw file body)
+    - removed dead internal helper (`streamToBuffer`) and tightened local declarations
+- `generateappealpdfcopy.js`:
+    - removed unused imports/noisy console warnings
+    - standardized required-input and negative-path contracts:
+        - `INCIDENT_ID_REQUIRED` (400)
+        - `CASE_NOT_FOUND` (404)
+        - `FORM_COLLECTION_NOT_FOUND` (400)
+        - `APPEAL_PDF_COPY_GENERATION_FAILED` (400)
+    - preserved success output contract (PDF content headers + buffer body)
+- `getsipsmedia_api.js` and `getappealtypesfornewappeal_api.js`:
+    - added method guard for non-GET requests using `METHOD_NOT_ALLOWED` (405)
+    - preserved existing GET success payloads
+- Expanded phase21 tests:
+    - `file-handler-contract.test.cjs`: added coverage for download failure + full generated PDF copy contract/negative paths
+    - `endpoint-handler-contract.test.cjs`: added method guard tests for both static endpoints
+
+Validation:
+
+- `node tests/phase21/api-contract-slice1.test.cjs` -> pass
+    - helper: 4/4
+    - file-handler: 17/17
+    - email-handler: 12/12
+    - endpoint-handler: 149/149
+- `npm run lint` -> warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+
+Follow-ups:
+
+- If desired, next slice can target remaining file-route parity candidates outside this bundle, but this closes the planned TASK22224 scope.
diff --git a/pages/api/endpoint/getappealtypesfornewappeal_api.js b/pages/api/endpoint/getappealtypesfornewappeal_api.js
index 06dde026..bbc4afc3 100644
--- a/pages/api/endpoint/getappealtypesfornewappeal_api.js
+++ b/pages/api/endpoint/getappealtypesfornewappeal_api.js
@@ -1,4 +1,4 @@
-import { respondSuccess } from "../middleware/apiResponse";
+import { respondError, respondSuccess } from "../middleware/apiResponse";
 
 /**
  * @swagger
@@ -13,6 +13,14 @@ import { respondSuccess } from "../middleware/apiResponse";
  */
 
 const ApiResponse = (req, res) => {
+    if (req.method && req.method !== "GET") {
+        return respondError(res, {
+            status: 405,
+            code: "METHOD_NOT_ALLOWED",
+            message: "Only GET is supported"
+        });
+    }
+
     return respondSuccess(res, {
         "value": [
             {
diff --git a/pages/api/endpoint/getsipsmedia_api.js b/pages/api/endpoint/getsipsmedia_api.js
index 1ef461b4..deb143ad 100644
--- a/pages/api/endpoint/getsipsmedia_api.js
+++ b/pages/api/endpoint/getsipsmedia_api.js
@@ -1,29 +1,14 @@
-import { respondSuccess } from "../middleware/apiResponse";
+import { respondError, respondSuccess } from "../middleware/apiResponse";
 
-// export default async function ApiProxy(req, res) {
-//     var caseid = req.query.caseid;
-//     var token = await getToken();
+export default function ApiProxy(req, res) {
+    if (req.method && req.method !== "GET") {
+        return respondError(res, {
+            status: 405,
+            code: "METHOD_NOT_ALLOWED",
+            message: "Only GET is supported"
+        });
+    }
 
-//     var queryUrl =
-//         "pinswg_sipsevents?$filter=_pinswg_sipseventsid_value eq " +
-//         caseid +
-//         "&$count=true";
-
-//     return axios
-//         .get(
-//             WEBAPI_URL + queryUrl + hashAPIPath(queryUrl),
-//             azureHeaders(token.access_token),
-//         )
-//         .then(({ data }) => {
-//             res.status(200).json(data);
-//         })
-//         .catch((error) => {
-//             consoleLogger(error);
-//             res.status(400).json(error);
-//         });
-// }
-
-export default function ApiProx(req, res) {
     const data = {
         "@odata.count": 4,
         "value": [
diff --git a/pages/api/file/downloadblob.js b/pages/api/file/downloadblob.js
index f7683731..e3cc0ff0 100644
--- a/pages/api/file/downloadblob.js
+++ b/pages/api/file/downloadblob.js
@@ -10,10 +10,10 @@ const ApiProxy = nextConnect();
 ApiProxy.use(middleware);
 
 ApiProxy.get(async (req, res) => {
-    var containerName = req.query.container;
-    var casefolderID = req.query.casefolderID;
-    var blobName = req.query.blobname;
-    var checkHash = req.query.hash;
+    const containerName = req.query.container;
+    const casefolderID = req.query.casefolderID;
+    const blobName = req.query.blobname;
+    const checkHash = req.query.hash;
 
     if (
         typeof containerName === "undefined" ||
@@ -32,7 +32,7 @@ ApiProxy.get(async (req, res) => {
         });
     }
 
-    var checkquerypath =
+    const checkquerypath =
         "/api/file/downloadblob?container=" +
         containerName +
         "&casefolderID=" +
@@ -48,34 +48,29 @@ ApiProxy.get(async (req, res) => {
         });
     }
 
-    const bloblocation =
-        casefolderID + (blobName.indexOf(".json") > 0 ? "/" : "/files/");
+    try {
+        const bloblocation =
+            casefolderID + (blobName.indexOf(".json") > 0 ? "/" : "/files/");
 
-    const downloaded = await downloadFile(
-        containerName,
-        bloblocation + decodeURI(blobName)
-    );
+        const downloaded = await downloadFile(
+            containerName,
+            bloblocation + decodeURI(blobName)
+        );
 
-    res.setHeader(
-        "content-disposition",
-        "attachment; filename=" + decodeURI(blobName)
-    );
-    return res.status(200).send(downloaded);
+        res.setHeader(
+            "content-disposition",
+            "attachment; filename=" + decodeURI(blobName)
+        );
+        return res.status(200).send(downloaded);
+    } catch (error) {
+        return respondError(res, {
+            status: 400,
+            code: "DOWNLOAD_BLOB_FAILED",
+            message: "Unable to download blob"
+        });
+    }
 });
 
-async function streamToBuffer(readableStream) {
-    return new Promise((resolve, reject) => {
-        const chunks = [];
-        readableStream.on("data", (data) => {
-            chunks.push(data instanceof Buffer ? data : Buffer.from(data));
-        });
-        readableStream.on("end", () => {
-            resolve(Buffer.concat(chunks));
-        });
-        readableStream.on("error", reject);
-    });
-}
-
 export const config = {
     api: {
         bodyParser: false
diff --git a/pages/api/file/generateappealpdfcopy.js b/pages/api/file/generateappealpdfcopy.js
index 4a1b7778..a3c87d83 100644
--- a/pages/api/file/generateappealpdfcopy.js
+++ b/pages/api/file/generateappealpdfcopy.js
@@ -1,45 +1,17 @@
-import {
-    createContainer,
-    getContainers,
-    getBlobs,
-    createRepBlob,
-    uploadFile,
-    uploadPDFAppealFiles,
-    downloadProgressFile,
-    getProgressBlobs,
-    getTempCaseBlob,
-    createAppealPDFBlob
-} from "../../../actions/azurestorage";
 import {
     getCaseByID,
     getPortalModuleDetails,
     getAppealPDFDocs
 } from "../../../actions/services/caseService";
 import { getFormCollectionByID } from "../../../components/utils";
-import ReactPDF, {
-    Document,
-    Page,
-    Text,
-    View,
-    StyleSheet,
-    PDFViewer,
-    pdf
-} from "@react-pdf/renderer";
-
-import middleware from "../middleware/middleware";
-import nextConnect from "next-connect";
-import fs from "fs";
-import path from "path";
+import { pdf } from "@react-pdf/renderer";
 import { getPickLists } from "../../../actions/services/referenceDataService";
 import { planningappeals78_pdf } from "../../../components/pdftemplates/planningappeals78_pdf";
-import { finalComments_pdf } from "../../../components/pdftemplates/finalComments_pdf";
-import { statement_pdf } from "../../../components/pdftemplates/statement_pdf";
-import { writtenStatement_pdf } from "../../../components/pdftemplates/writtenStatement_pdf";
 import { other_pdf } from "../../../components/pdftemplates/other_pdf";
+import { respondError } from "../middleware/apiResponse";
 
-const getDetails = (resultsObj, detailsType) => {
+const getDetails = (resultsObj) => {
     if (!Array.isArray(resultsObj)) {
-        console.warn("getDetails: resultsObj is not an array");
         return Promise.resolve([]);
     }
 
@@ -51,7 +23,6 @@ const getDetails = (resultsObj, detailsType) => {
 
             const form = getFormCollectionByID(appealType);
             if (!form) {
-                console.warn("No form found for appeal type:", appealType);
                 return null;
             }
 
@@ -64,54 +35,74 @@ const getDetails = (resultsObj, detailsType) => {
 
 export default async function handler(req, res) {
     const incidentid = req.body?.docProps;
-    if (!incidentid) return res.status(400).send("Missing incident ID");
-
-    const caseObj = await getCaseByID(incidentid);
-    if (!Array.isArray(caseObj) || caseObj.length === 0)
-        return res.status(404).send("Case not found");
-
-    const caseDetailsObj = await getDetails(caseObj, "myCases");
-    const fileList = (await getAppealPDFDocs(incidentid)) || [];
-
-    // Inject into the first item in `value` array
-
-    if (caseDetailsObj[0]?.value?.[0]) {
-        caseDetailsObj[0].value[0].pinswg_developmentdescription =
-            caseObj[0].description;
-        caseDetailsObj[0].value[0].caseObj = caseObj[0];
-        caseDetailsObj[0].value[0].filesList = fileList;
+    if (!incidentid) {
+        return respondError(res, {
+            status: 400,
+            code: "INCIDENT_ID_REQUIRED",
+            message: "Incident id is required"
+        });
     }
 
-    const whichForm = getFormCollectionByID(caseObj[0].pinswg_appealcasetype);
-    const pickListData = await getPickLists(whichForm.UrlName);
+    try {
+        const caseObj = await getCaseByID(incidentid);
+        if (!Array.isArray(caseObj) || caseObj.length === 0) {
+            return respondError(res, {
+                status: 404,
+                code: "CASE_NOT_FOUND",
+                message: "Case not found"
+            });
+        }
 
-    const appealTypeMap = {
-        846040000: planningappeals78_pdf,
-        846040004: planningappeals78_pdf
-    };
+        const caseDetailsObj = await getDetails(caseObj);
+        const fileList = (await getAppealPDFDocs(incidentid)) || [];
 
-    //console.log(caseDetailsObj[0].value[0]);
+        if (caseDetailsObj[0]?.value?.[0]) {
+            caseDetailsObj[0].value[0].pinswg_developmentdescription =
+                caseObj[0].description;
+            caseDetailsObj[0].value[0].caseObj = caseObj[0];
+            caseDetailsObj[0].value[0].filesList = fileList;
+        }
 
-    const MyDocument = (values) => {
-        const type = caseObj[0].pinswg_appealcasetype;
-        const renderDocument = appealTypeMap[type] || other_pdf;
-        return renderDocument(values);
-    };
+        const whichForm = getFormCollectionByID(
+            caseObj[0].pinswg_appealcasetype
+        );
+        if (!whichForm?.UrlName) {
+            return respondError(res, {
+                status: 400,
+                code: "FORM_COLLECTION_NOT_FOUND",
+                message: "Unable to resolve form collection"
+            });
+        }
+        const pickListData = await getPickLists(whichForm.UrlName);
 
-    const pdfComponent = MyDocument({
-        docProps: caseDetailsObj[0].value[0],
-        pickListData
-    });
+        const appealTypeMap = {
+            846040000: planningappeals78_pdf,
+            846040004: planningappeals78_pdf
+        };
 
-    const pdfBuffer = await pdf(pdfComponent).toBuffer();
+        const renderDocument =
+            appealTypeMap[caseObj[0].pinswg_appealcasetype] || other_pdf;
+        const pdfComponent = renderDocument({
+            docProps: caseDetailsObj?.[0]?.value?.[0] || {},
+            pickListData
+        });
 
-    const repDate = new Date();
-    const formattedDate = repDate.toISOString().split("T")[0];
+        const pdfBuffer = await pdf(pdfComponent).toBuffer();
 
-    res.setHeader("Content-Type", "application/pdf");
-    res.setHeader(
-        "Content-Disposition",
-        `attachment; filename=${formattedDate}_-_Appeal_Form.pdf`
-    );
-    res.send(pdfBuffer);
+        const repDate = new Date();
+        const formattedDate = repDate.toISOString().split("T")[0];
+
+        res.setHeader("Content-Type", "application/pdf");
+        res.setHeader(
+            "Content-Disposition",
+            `attachment; filename=${formattedDate}_-_Appeal_Form.pdf`
+        );
+        return res.send(pdfBuffer);
+    } catch (error) {
+        return respondError(res, {
+            status: 400,
+            code: "APPEAL_PDF_COPY_GENERATION_FAILED",
+            message: "Unable to generate appeal PDF copy"
+        });
+    }
 }
diff --git a/tests/phase21/endpoint-handler-contract.test.cjs b/tests/phase21/endpoint-handler-contract.test.cjs
index 0b3e09e1..bb523855 100644
--- a/tests/phase21/endpoint-handler-contract.test.cjs
+++ b/tests/phase21/endpoint-handler-contract.test.cjs
@@ -3688,6 +3688,37 @@ test("getsipsmedia returns success contract", async () => {
     assert.strictEqual(res.state.jsonBody["@odata.count"], 4);
 });
 
+test("getsipsmedia returns METHOD_NOT_ALLOWED for non-GET methods", async () => {
+    const mod = loadModule("pages/api/endpoint/getsipsmedia_api.js", {
+        respondSuccess: respondSuccessMock,
+        respondError: respondErrorMock
+    });
+
+    const req = { method: "POST", query: {} };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 405);
+    assert.strictEqual(res.state.jsonBody.error.code, "METHOD_NOT_ALLOWED");
+});
+
+test("getappealtypesfornewappeal returns METHOD_NOT_ALLOWED for non-GET methods", async () => {
+    const mod = loadModule(
+        "pages/api/endpoint/getappealtypesfornewappeal_api.js",
+        {
+            respondSuccess: respondSuccessMock,
+            respondError: respondErrorMock
+        }
+    );
+
+    const req = { method: "POST", query: {} };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 405);
+    assert.strictEqual(res.state.jsonBody.error.code, "METHOD_NOT_ALLOWED");
+});
+
 const run = async () => {
     let passed = 0;
     for (const currentTest of tests) {
diff --git a/tests/phase21/file-handler-contract.test.cjs b/tests/phase21/file-handler-contract.test.cjs
index cc0f9ee9..18d573aa 100644
--- a/tests/phase21/file-handler-contract.test.cjs
+++ b/tests/phase21/file-handler-contract.test.cjs
@@ -263,6 +263,175 @@ test("setupcontainer dependency failure returns SETUP_CONTAINER_FAILED", async (
     assert.strictEqual(res.state.jsonBody.error.code, "SETUP_CONTAINER_FAILED");
 });
 
+test("downloadblob dependency failure returns DOWNLOAD_BLOB_FAILED", async () => {
+    const mod = loadModule("pages/api/file/downloadblob.js", {
+        nextConnect: createNextConnectMock(),
+        middleware: () => {},
+        hashAPIPath: () => "&hash=expected",
+        respondError: respondErrorMock,
+        downloadFile: async () => {
+            throw new Error("download failed");
+        }
+    });
+
+    const req = {
+        query: {
+            container: "c1",
+            casefolderID: "f1",
+            blobname: "doc.pdf",
+            hash: "expected"
+        }
+    };
+    const res = createRes();
+    await mod.default.handler(req, res);
+
+    assert.strictEqual(res.state.statusCode, 400);
+    assert.strictEqual(res.state.jsonBody.error.code, "DOWNLOAD_BLOB_FAILED");
+});
+
+test("generateappealpdfcopy returns INCIDENT_ID_REQUIRED when docProps missing", async () => {
+    const mod = loadModule("pages/api/file/generateappealpdfcopy.js", {
+        respondError: respondErrorMock,
+        getCaseByID: async () => [],
+        getPortalModuleDetails: async () => ({ value: [{}] }),
+        getAppealPDFDocs: async () => [],
+        getFormCollectionByID: () => ({ UrlName: "planningappeals78" }),
+        getPickLists: async () => ({}),
+        planningappeals78_pdf: () => ({}),
+        other_pdf: () => ({}),
+        pdf: () => ({ toBuffer: async () => Buffer.from("pdf") })
+    });
+
+    const req = { body: {} };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 400);
+    assert.strictEqual(res.state.jsonBody.error.code, "INCIDENT_ID_REQUIRED");
+});
+
+test("generateappealpdfcopy returns CASE_NOT_FOUND when case lookup is empty", async () => {
+    const mod = loadModule("pages/api/file/generateappealpdfcopy.js", {
+        respondError: respondErrorMock,
+        getCaseByID: async () => [],
+        getPortalModuleDetails: async () => ({ value: [{}] }),
+        getAppealPDFDocs: async () => [],
+        getFormCollectionByID: () => ({ UrlName: "planningappeals78" }),
+        getPickLists: async () => ({}),
+        planningappeals78_pdf: () => ({}),
+        other_pdf: () => ({}),
+        pdf: () => ({ toBuffer: async () => Buffer.from("pdf") })
+    });
+
+    const req = { body: { docProps: "i1" } };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 404);
+    assert.strictEqual(res.state.jsonBody.error.code, "CASE_NOT_FOUND");
+});
+
+test("generateappealpdfcopy returns FORM_COLLECTION_NOT_FOUND when collection is unresolved", async () => {
+    const mod = loadModule("pages/api/file/generateappealpdfcopy.js", {
+        respondError: respondErrorMock,
+        getCaseByID: async () => [
+            {
+                pinswg_appealcasetype: 846040000,
+                ticketnumber: "CAS-1",
+                description: "desc"
+            }
+        ],
+        getPortalModuleDetails: async () => ({ value: [{}] }),
+        getAppealPDFDocs: async () => [],
+        getFormCollectionByID: () => null,
+        getPickLists: async () => ({}),
+        planningappeals78_pdf: () => ({}),
+        other_pdf: () => ({}),
+        pdf: () => ({ toBuffer: async () => Buffer.from("pdf") })
+    });
+
+    const req = { body: { docProps: "i1" } };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 400);
+    assert.strictEqual(
+        res.state.jsonBody.error.code,
+        "FORM_COLLECTION_NOT_FOUND"
+    );
+});
+
+test("generateappealpdfcopy success returns pdf buffer and headers", async () => {
+    const mod = loadModule("pages/api/file/generateappealpdfcopy.js", {
+        respondError: respondErrorMock,
+        getCaseByID: async () => [
+            {
+                pinswg_appealcasetype: 846040000,
+                ticketnumber: "CAS-1",
+                description: "desc"
+            }
+        ],
+        getPortalModuleDetails: async () => ({ value: [{}] }),
+        getAppealPDFDocs: async () => [{ id: "d1" }],
+        getFormCollectionByID: () => ({
+            UrlName: "planningappeals78",
+            LogicalCollectionName: "pinswg_planningappeals78s"
+        }),
+        getPickLists: async () => ({ a: 1 }),
+        planningappeals78_pdf: () => ({ type: "pdfComponent" }),
+        other_pdf: () => ({ type: "otherComponent" }),
+        pdf: () => ({ toBuffer: async () => Buffer.from("pdf-content") })
+    });
+
+    const req = { body: { docProps: "i1" } };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.headers["content-type"], "application/pdf");
+    assert.strictEqual(
+        typeof res.state.headers["content-disposition"],
+        "string"
+    );
+    assert.strictEqual(res.state.sentBody.toString(), "pdf-content");
+});
+
+test("generateappealpdfcopy catch path returns APPEAL_PDF_COPY_GENERATION_FAILED", async () => {
+    const mod = loadModule("pages/api/file/generateappealpdfcopy.js", {
+        respondError: respondErrorMock,
+        getCaseByID: async () => [
+            {
+                pinswg_appealcasetype: 846040000,
+                ticketnumber: "CAS-1",
+                description: "desc"
+            }
+        ],
+        getPortalModuleDetails: async () => ({ value: [{}] }),
+        getAppealPDFDocs: async () => [{ id: "d1" }],
+        getFormCollectionByID: () => ({
+            UrlName: "planningappeals78",
+            LogicalCollectionName: "pinswg_planningappeals78s"
+        }),
+        getPickLists: async () => ({ a: 1 }),
+        planningappeals78_pdf: () => ({ type: "pdfComponent" }),
+        other_pdf: () => ({ type: "otherComponent" }),
+        pdf: () => ({
+            toBuffer: async () => {
+                throw new Error("pdf failure");
+            }
+        })
+    });
+
+    const req = { body: { docProps: "i1" } };
+    const res = createRes();
+    await mod.default(req, res);
+
+    assert.strictEqual(res.state.statusCode, 400);
+    assert.strictEqual(
+        res.state.jsonBody.error.code,
+        "APPEAL_PDF_COPY_GENERATION_FAILED"
+    );
+});
+
 const run = async () => {
     let passed = 0;
     for (const currentTest of tests) {