diff --git a/api/package-lock.json b/api/package-lock.json
index 5562ccc..a6bf8fb 100644
--- a/api/package-lock.json
+++ b/api/package-lock.json
@@ -29,6 +29,7 @@
         "tldts": "^7.4.12"
       },
       "devDependencies": {
+        "@types/express": "^5.0.6",
         "@types/jest": "^30.0.0",
         "@types/node": "^25.9.3",
         "jest": "^30.4.2",
@@ -2012,6 +2013,27 @@
         "@babel/types": "^7.28.2"
       }
     },
+    "node_modules/@types/body-parser": {
+      "version": "1.19.6",
+      "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.6.tgz",
+      "integrity": "sha512-HLFeCYgz89uk22N5Qg3dvGvsv46B8GLvKKo1zKG4NybA8U2DiEO3w9lqGg29t/tfLRJpJ6iQxnVw4OnB7MoM9g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/connect": {
+      "version": "3.4.38",
+      "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.38.tgz",
+      "integrity": "sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/d3-array": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/d3-array/-/d3-array-3.0.3.tgz",
@@ -2101,6 +2123,31 @@
       "devOptional": true,
       "license": "MIT"
     },
+    "node_modules/@types/express": {
+      "version": "5.0.6",
+      "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.6.tgz",
+      "integrity": "sha512-sKYVuV7Sv9fbPIt/442koC7+IIwK5olP1KWeD88e/idgoJqDm3JV/YUiPwkoKK92ylff2MGxSz1CSjsXelx0YA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/body-parser": "*",
+        "@types/express-serve-static-core": "^5.0.0",
+        "@types/serve-static": "^2"
+      }
+    },
+    "node_modules/@types/express-serve-static-core": {
+      "version": "5.1.3",
+      "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-5.1.3.tgz",
+      "integrity": "sha512-dPfW8NFiOF4wOHc7+N/QSxlY9cfSsenewGbAz8C8U/MULPd/YZ27LvJUIlzaXie7e6Ove9YunJGgC9tbHD2cKw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*",
+        "@types/qs": "*",
+        "@types/range-parser": "*",
+        "@types/send": "*"
+      }
+    },
     "node_modules/@types/geojson": {
       "version": "7946.0.16",
       "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.16.tgz",
@@ -2108,6 +2155,13 @@
       "devOptional": true,
       "license": "MIT"
     },
+    "node_modules/@types/http-errors": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@types/http-errors/-/http-errors-2.0.5.tgz",
+      "integrity": "sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/istanbul-lib-coverage": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
@@ -2173,6 +2227,20 @@
         "pg-types": "^2.2.0"
       }
     },
+    "node_modules/@types/qs": {
+      "version": "6.15.1",
+      "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.15.1.tgz",
+      "integrity": "sha512-GZHUBZR9hckSUhrxmp1nG6NwdpM9fCunJwyThLW1X3AyHgd9IlHb6VANpQQqDr2o/qQp6McZ3y/IA2rVzKzSbw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/range-parser": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.7.tgz",
+      "integrity": "sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/react": {
       "version": "19.2.17",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.17.tgz",
@@ -2183,6 +2251,27 @@
         "csstype": "^3.2.2"
       }
     },
+    "node_modules/@types/send": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@types/send/-/send-1.2.1.tgz",
+      "integrity": "sha512-arsCikDvlU99zl1g69TcAB3mzZPpxgw0UQnaHeC1Nwb015xp8bknZv5rIfri9xTOcMuaVgvabfIRA7PSZVuZIQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/serve-static": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@types/serve-static/-/serve-static-2.2.0.tgz",
+      "integrity": "sha512-8mam4H1NHLtu7nmtalF7eyBH14QyOASmcxHhSfEoRyr0nP/YdoesEtU+uSRvMe96TW/HPTtkoKqQLl53N7UXMQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/http-errors": "*",
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/stack-utils": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/@types/stack-utils/-/stack-utils-2.0.3.tgz",
diff --git a/api/package.json b/api/package.json
index 8b6723b..f8a4a91 100644
--- a/api/package.json
+++ b/api/package.json
@@ -38,6 +38,7 @@
     "tldts": "^7.4.12"
   },
   "devDependencies": {
+    "@types/express": "^5.0.6",
     "@types/jest": "^30.0.0",
     "@types/node": "^25.9.3",
     "jest": "^30.4.2",
diff --git a/api/src/http-body-limits.spec.ts b/api/src/http-body-limits.spec.ts
index 0100a49..d64b25c 100644
--- a/api/src/http-body-limits.spec.ts
+++ b/api/src/http-body-limits.spec.ts
@@ -1,12 +1,7 @@
 import { configureHttpBodyParsers, DEFAULT_JSON_BODY_LIMIT, IMPORT_JSON_BODY_LIMIT } from './http-body-limits';
 
-const express = require('express') as () => {
-  use(...args: unknown[]): void;
-  post(path: string, handler: (request: { body?: unknown; rawBody?: Buffer }, response: { json(body: unknown): void }) => void): void;
-  listen(port: number, host: string, callback: () => void): { close(callback: (error?: Error) => void): void; address(): { port: number } | string | null };
-};
-const expressModule = require('express') as { json(options: { limit: string }): (...args: unknown[]) => unknown; urlencoded(options: { limit: string; extended: boolean }): (...args: unknown[]) => unknown };
-const http = require('node:http') as typeof import('node:http');
+import express from 'express';
+import * as http from 'node:http';
 
 describe('configureHttpBodyParsers', () => {
   it('keeps ordinary JSON bounded while granting only import routes a larger limit', () => {
@@ -17,7 +12,7 @@ describe('configureHttpBodyParsers', () => {
 
     expect(DEFAULT_JSON_BODY_LIMIT).toBe('2mb');
     expect(IMPORT_JSON_BODY_LIMIT).toBe('25mb');
-    expect(use).toHaveBeenCalledTimes(1);
+    expect(use).toHaveBeenCalledTimes(2);
     expect(use).toHaveBeenCalledWith('/api/client/send/imports', expect.any(Function));
     expect(useBodyParser).toHaveBeenNthCalledWith(1, 'json', { limit: '2mb' });
     expect(useBodyParser).toHaveBeenNthCalledWith(2, 'urlencoded', { limit: '2mb', extended: true });
@@ -28,12 +23,16 @@ describe('configureHttpBodyParsers', () => {
     configureHttpBodyParsers({
       use: serverApp.use.bind(serverApp),
       useBodyParser(type: 'json' | 'urlencoded', options: { limit: string; extended?: boolean }) {
-        serverApp.use(type === 'json'
-          ? expressModule.json({ limit: options.limit })
-          : expressModule.urlencoded({ limit: options.limit, extended: options.extended ?? true }));
+        serverApp.use(
+          type === 'json'
+            ? express.json({ limit: options.limit })
+            : express.urlencoded({ limit: options.limit, extended: options.extended ?? true }),
+        );
       },
     } as never);
-    serverApp.post('/api/client/send/imports/preview', (request, response) => response.json({ size: request.rawBody?.length ?? 0 }));
+    serverApp.post('/api/client/send/imports/preview', (request, response) =>
+      response.json({ size: (request as typeof request & { rawBody?: Buffer }).rawBody?.length ?? 0 }),
+    );
     serverApp.post('/api/ordinary', (_request, response) => response.json({ accepted: true }));
 
     const server = await new Promise<ReturnType<typeof serverApp.listen>>((resolve) => {
@@ -47,19 +46,49 @@ describe('configureHttpBodyParsers', () => {
       expect(importResponse.status).toBe(200);
       expect(JSON.parse(importResponse.body)).toEqual({ size: Buffer.byteLength(body) });
       await expect(postJSON(address.port, '/api/ordinary', body)).resolves.toMatchObject({ status: 413 });
+      const oversized = await postJSON(address.port, '/api/openapi/v1/sms/messages', body);
+      expect(oversized.status).toBe(413);
+      expect(JSON.parse(oversized.body)).toMatchObject({ code: 'PAYLOAD_TOO_LARGE', status: 413 });
+      for (const malformed of ['{"private-marker":', '"private-marker"']) {
+        const invalid = await postJSON(address.port, '/api/openapi/v1/sms/messages', malformed);
+        expect(invalid.status).toBe(400);
+        expect(JSON.parse(invalid.body)).toMatchObject({ code: 'PARAMETER_INVALID', requestId: invalid.requestId });
+        expect(invalid.requestId).toMatch(/^req_/);
+        expect(invalid.contentType).toContain('application/problem+json');
+        expect(invalid.body).not.toContain('private-marker');
+      }
+      const ordinary = await postJSON(address.port, '/api/ordinary', '{');
+      expect(ordinary.status).toBe(400);
+      expect(ordinary.requestId).toBeUndefined();
     } finally {
-      await new Promise<void>((resolve, reject) => server.close((error) => error ? reject(error) : resolve()));
+      await new Promise<void>((resolve, reject) => server.close((error) => (error ? reject(error) : resolve())));
     }
   });
 });
 
 function postJSON(port: number, path: string, body: string) {
-  return new Promise<{ status: number; body: string }>((resolve, reject) => {
-    const request = http.request({ hostname: '127.0.0.1', port, path, method: 'POST', headers: { 'Content-Type': 'application/json', 'Content-Length': Buffer.byteLength(body) } }, (response) => {
-      const chunks: Buffer[] = [];
-      response.on('data', (chunk: Buffer) => chunks.push(chunk));
-      response.once('end', () => resolve({ status: response.statusCode ?? 0, body: Buffer.concat(chunks).toString('utf8') }));
-    });
+  return new Promise<{ status: number; body: string; requestId?: string; contentType?: string }>((resolve, reject) => {
+    const request = http.request(
+      {
+        hostname: '127.0.0.1',
+        port,
+        path,
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json', 'Content-Length': Buffer.byteLength(body) },
+      },
+      (response) => {
+        const chunks: Buffer[] = [];
+        response.on('data', (chunk: Buffer) => chunks.push(chunk));
+        response.once('end', () =>
+          resolve({
+            status: response.statusCode ?? 0,
+            body: Buffer.concat(chunks).toString('utf8'),
+            requestId: response.headers['x-request-id'] as string | undefined,
+            contentType: response.headers['content-type'],
+          }),
+        );
+      },
+    );
     request.once('error', reject);
     request.end(body);
   });
diff --git a/api/src/http-body-limits.ts b/api/src/http-body-limits.ts
index 8208d83..0decb3a 100644
--- a/api/src/http-body-limits.ts
+++ b/api/src/http-body-limits.ts
@@ -1,11 +1,6 @@
 import type { NestExpressApplication } from '@nestjs/platform-express';
-
-const express = require('express') as {
-  json(options: {
-    limit: string;
-    verify(request: { rawBody?: Buffer }, response: unknown, buffer: Buffer): void;
-  }): (...args: unknown[]) => unknown;
-};
+import { openApiBodyErrorMiddleware } from './open-api/open-api-body-error.middleware';
+import express from 'express';
 
 export const DEFAULT_JSON_BODY_LIMIT = '2mb';
 export const IMPORT_JSON_BODY_LIMIT = '25mb';
@@ -14,12 +9,16 @@ export function configureHttpBodyParsers(app: NestExpressApplication) {
   // Import preview/confirmation temporarily carries the source CSV/TSV in
   // JSON. Give only these endpoints the larger boundary; keeping ordinary
   // JSON at 2 MiB limits the duplicate raw-buffer + parsed-object footprint.
-  app.use('/api/client/send/imports', express.json({
-    limit: IMPORT_JSON_BODY_LIMIT,
-    verify(request, _response, buffer) {
-      request.rawBody = buffer;
-    },
-  }));
+  app.use(
+    '/api/client/send/imports',
+    express.json({
+      limit: IMPORT_JSON_BODY_LIMIT,
+      verify(request, _response, buffer) {
+        (request as typeof request & { rawBody?: Buffer }).rawBody = buffer;
+      },
+    }),
+  );
   app.useBodyParser('json', { limit: DEFAULT_JSON_BODY_LIMIT });
   app.useBodyParser('urlencoded', { limit: DEFAULT_JSON_BODY_LIMIT, extended: true });
+  app.use('/api/openapi/v1/sms', openApiBodyErrorMiddleware);
 }
diff --git a/api/src/open-api/open-api-body-error.middleware.ts b/api/src/open-api/open-api-body-error.middleware.ts
new file mode 100644
index 0000000..16aaa46
--- /dev/null
+++ b/api/src/open-api/open-api-body-error.middleware.ts
@@ -0,0 +1,21 @@
+import { randomUUID } from 'node:crypto';
+import { sendOpenApiProblem, type OpenApiProblemResponse } from './open-api.protocol';
+
+/** Mounted after parsers, before routes; never expose parser errors containing raw input. */
+export function openApiBodyErrorMiddleware(
+  error: unknown,
+  request: { openApiRequestId?: string },
+  response: OpenApiProblemResponse,
+  next: (error: unknown) => void,
+) {
+  const type = error && typeof error === 'object' && 'type' in error ? error.type : undefined;
+  const failures: Record<string, { status: number; code: string; message: string }> = {
+    'entity.parse.failed': { status: 400, code: 'PARAMETER_INVALID', message: '请求体必须为有效的JSON对象' },
+    'entity.too.large': { status: 413, code: 'PAYLOAD_TOO_LARGE', message: '请求体超过大小限制' },
+    'charset.unsupported': { status: 415, code: 'UNSUPPORTED_MEDIA_TYPE', message: '请求体字符集不受支持' },
+    'encoding.unsupported': { status: 415, code: 'UNSUPPORTED_MEDIA_TYPE', message: '请求体编码不受支持' },
+  };
+  const failure = typeof type === 'string' && Object.hasOwn(failures, type) ? failures[type] : undefined;
+  if (!failure) return next(error);
+  sendOpenApiProblem(response, (request.openApiRequestId ??= `req_${randomUUID()}`), failure);
+}
diff --git a/api/src/open-api/open-api-exception.filter.ts b/api/src/open-api/open-api-exception.filter.ts
index 1c569a2..97ed83f 100644
--- a/api/src/open-api/open-api-exception.filter.ts
+++ b/api/src/open-api/open-api-exception.filter.ts
@@ -1,6 +1,6 @@
 import { ArgumentsHost, Catch, ExceptionFilter, Logger } from '@nestjs/common';
 import { randomUUID } from 'node:crypto';
-import { publicOpenApiFailure } from './open-api.protocol';
+import { publicOpenApiFailure, sendOpenApiProblem } from './open-api.protocol';
 import type { OpenApiRequestLike } from './open-api.types';
 
 @Catch()
@@ -31,17 +31,6 @@ export class OpenApiExceptionFilter implements ExceptionFilter {
                 .join('\n')
             : undefined,
       });
-    response.setHeader('X-Request-Id', requestId);
-    response
-      .status(failure.status)
-      .type('application/problem+json')
-      .send({
-        type: `https://cmpp-platform.local/problems/${failure.code.toLowerCase()}`,
-        title: failure.status >= 500 ? 'Internal Server Error' : 'Request failed',
-        status: failure.status,
-        code: failure.code,
-        detail: failure.message,
-        requestId,
-      });
+    sendOpenApiProblem(response, requestId, failure);
   }
 }
diff --git a/api/src/open-api/open-api-input-boundaries.spec.ts b/api/src/open-api/open-api-input-boundaries.spec.ts
new file mode 100644
index 0000000..ad3d268
--- /dev/null
+++ b/api/src/open-api/open-api-input-boundaries.spec.ts
@@ -0,0 +1,78 @@
+import { BadRequestException } from '@nestjs/common';
+import * as dns from 'node:dns/promises';
+import { parseOpenApiDate } from './open-api.protocol';
+import { OpenApiService, resolveWebhookTarget } from './open-api.service';
+
+jest.mock('node:dns/promises', () => ({ lookup: jest.fn() }));
+
+describe('public HTTP input boundaries', () => {
+  it.each([
+    '2026-02-30',
+    '2025-02-29T00:00:00Z',
+    '2026-04-31T00:00:00+08:00',
+    '2026-01-01T24:00:00Z',
+    '2026-01-01T12:60:00Z',
+    '2026-01-01T00:00:00+24:00',
+    '2026-01-01T00:00:00',
+    '09/14/2026',
+    '',
+    '2026-00-01',
+    '2026-01-00',
+  ])('rejects invalid ISO calendar/time %s', (value) => {
+    expect(() => parseOpenApiDate(value)).toThrow(BadRequestException);
+  });
+  it.each([
+    ['2024-02-29', '2024-02-29T00:00:00.000Z'],
+    ['2026-09-14T08:00:00+08:00', '2026-09-14T00:00:00.000Z'],
+    ['2026-09-14T00:00Z', '2026-09-14T00:00:00.000Z'],
+    ['2000-02-29T00:00:00.123Z', '2000-02-29T00:00:00.123Z'],
+  ])('preserves valid calendar dates/timezones %s', (value, expected) => {
+    expect(parseOpenApiDate(value).toISOString()).toBe(expected);
+  });
+  it('rejects an impossible cursor date before calling PostgreSQL', async () => {
+    const prisma = { smsUplinkMessage: { findMany: jest.fn() } };
+    const service = new OpenApiService(prisma as never, {} as never);
+    const cursor = Buffer.from(JSON.stringify(['2026-02-30T00:00:00Z', 'id'])).toString('base64url');
+    await expect(
+      service.listUplinks({ config: { uplinkQueryEnabled: true, maxQueryRangeDays: 31, maxPageSize: 100 } } as never, {
+        cursor,
+      }),
+    ).rejects.toMatchObject({ response: { code: 'CURSOR_INVALID' } });
+    expect(prisma.smsUplinkMessage.findMany).not.toHaveBeenCalled();
+  });
+  it.each([
+    '::1',
+    '::',
+    'fd00::1',
+    'fe80::1',
+    '::ffff:127.0.0.1',
+    '::ffff:7f00:1',
+    '::ffff:192.168.1.1',
+    '0:0:0:0:0:ffff:0a00:0001',
+  ])('rejects private IPv6 literal %s without DNS', async (address) => {
+    const lookup = jest.mocked(dns.lookup);
+    try {
+      await expect(resolveWebhookTarget(`https://[${address}]/hook`, true)).rejects.toThrow(BadRequestException);
+      expect(lookup).not.toHaveBeenCalled();
+    } finally {
+      lookup.mockReset();
+    }
+  });
+  it('preserves public IPv6 addresses for TLS URLs and fixed-address connection', async () => {
+    await expect(resolveWebhookTarget('https://[2606:4700:4700::1111]/hook', true)).resolves.toMatchObject({
+      address: '2606:4700:4700::1111',
+      family: 6,
+    });
+  });
+  it('returns a controlled 400 on DNS failure without exposing resolver diagnostics', async () => {
+    const lookup = jest.mocked(dns.lookup).mockRejectedValueOnce(new Error('ENOTFOUND internal-resolver-detail'));
+    try {
+      await expect(resolveWebhookTarget('https://unavailable.invalid/hook', true)).rejects.toMatchObject({
+        status: 400,
+        message: 'Webhook域名未解析到可用地址',
+      });
+    } finally {
+      lookup.mockReset();
+    }
+  });
+});
diff --git a/api/src/open-api/open-api.controller.ts b/api/src/open-api/open-api.controller.ts
index 1aa4aee..e5f4bf2 100644
--- a/api/src/open-api/open-api.controller.ts
+++ b/api/src/open-api/open-api.controller.ts
@@ -43,6 +43,8 @@ import {
 @ApiResponse({ status: 403, type: OpenApiProblemDto })
 @ApiResponse({ status: 404, type: OpenApiProblemDto })
 @ApiResponse({ status: 409, type: OpenApiProblemDto })
+@ApiResponse({ status: 413, type: OpenApiProblemDto })
+@ApiResponse({ status: 415, type: OpenApiProblemDto })
 @ApiResponse({ status: 422, type: OpenApiProblemDto })
 @ApiResponse({ status: 429, type: OpenApiProblemDto })
 @ApiResponse({ status: 500, type: OpenApiProblemDto })
diff --git a/api/src/open-api/open-api.protocol.ts b/api/src/open-api/open-api.protocol.ts
index 58df99d..5d7c6bc 100644
--- a/api/src/open-api/open-api.protocol.ts
+++ b/api/src/open-api/open-api.protocol.ts
@@ -1,5 +1,5 @@
 import { createHash, createHmac } from 'node:crypto';
-import { HttpException } from '@nestjs/common';
+import { BadRequestException, HttpException } from '@nestjs/common';
 import type { LookupFunction } from 'node:net';
 
 /** Keep the validated address pinned while honoring Node's all-address lookup contract. */
@@ -10,6 +10,60 @@ export function pinnedWebhookLookup(address: string, family: number): LookupFunc
   };
 }
 
+/** Validate calendar components before Date can normalize an impossible day. */
+export function parseOpenApiDate(value: string): Date {
+  const parts = /^(\d{4})-(\d{2})-(\d{2})(?:T(\d{2}):(\d{2})(?::(\d{2})(?:\.(\d{1,3}))?)?(Z|[+-]\d{2}:\d{2}))?$/.exec(
+    value,
+  );
+  if (parts) {
+    const year = Number(parts[1]);
+    const month = Number(parts[2]);
+    const day = Number(parts[3]);
+    const leap = year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
+    const days = [31, leap ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+    const zone = parts[8];
+    const validZone = !zone || zone === 'Z' || (Number(zone.slice(1, 3)) < 24 && Number(zone.slice(4)) < 60);
+    const date = new Date(value);
+    if (
+      month >= 1 &&
+      month <= 12 &&
+      day >= 1 &&
+      day <= days[month - 1] &&
+      Number(parts[4] ?? 0) < 24 &&
+      Number(parts[5] ?? 0) < 60 &&
+      Number(parts[6] ?? 0) < 60 &&
+      validZone &&
+      Number.isFinite(date.getTime())
+    )
+      return date;
+  }
+  throw new BadRequestException({ code: 'TIME_RANGE_INVALID', message: '时间必须为有效的ISO8601日期或带时区时间' });
+}
+
+export type OpenApiProblemResponse = {
+  setHeader(name: string, value: string): void;
+  status(code: number): { type(value: string): { send(body: unknown): void } };
+};
+
+export function sendOpenApiProblem(
+  response: OpenApiProblemResponse,
+  requestId: string,
+  failure: { status: number; code: string; message: string },
+) {
+  response.setHeader('X-Request-Id', requestId);
+  response
+    .status(failure.status)
+    .type('application/problem+json')
+    .send({
+      type: `https://cmpp-platform.local/problems/${failure.code.toLowerCase()}`,
+      title: failure.status >= 500 ? 'Internal Server Error' : 'Request failed',
+      status: failure.status,
+      code: failure.code,
+      detail: failure.message,
+      requestId,
+    });
+}
+
 /** v1 compatibility: an absent parsed body hashes as {}, never try alternate hashes. */
 export function openApiBodyHash(rawBody: Buffer | undefined, body: unknown) {
   return createHash('sha256')
diff --git a/api/src/open-api/open-api.service.ts b/api/src/open-api/open-api.service.ts
index 2869223..a7601f9 100644
--- a/api/src/open-api/open-api.service.ts
+++ b/api/src/open-api/open-api.service.ts
@@ -26,7 +26,7 @@ import { SendChainService } from '../send-chain/send-chain.service';
 import { decryptSecret, encryptSecret } from './open-api.crypto';
 import type { OpenApiAuthContext } from './open-api.types';
 import { ProtocolLogsService } from '../protocol-logs/protocol-logs.service';
-import { pinnedWebhookLookup, publicOpenApiFailure, webhookJobId } from './open-api.protocol';
+import { parseOpenApiDate, pinnedWebhookLookup, publicOpenApiFailure, webhookJobId } from './open-api.protocol';
 import { automaticDeliveryMode } from './delivery-mode';
 
 export const OPEN_API_WEBHOOK_TRANSPORT = Symbol('open-api-webhook-transport');
@@ -449,8 +449,9 @@ export class OpenApiService implements OnModuleInit, OnModuleDestroy {
       if (value !== undefined && typeof value !== 'string')
         throw new BadRequestException({ code: 'PARAMETER_INVALID', message: '查询参数必须为单个字符串' });
     }
-    const endTime = query.endTime ? new Date(query.endTime) : new Date();
-    const startTime = query.startTime ? new Date(query.startTime) : new Date(endTime.getTime() - 24 * 3600_000);
+    const endTime = query.endTime !== undefined ? parseOpenApiDate(query.endTime) : new Date();
+    const startTime =
+      query.startTime !== undefined ? parseOpenApiDate(query.startTime) : new Date(endTime.getTime() - 24 * 3600_000);
     if (!Number.isFinite(startTime.getTime()) || !Number.isFinite(endTime.getTime()) || startTime > endTime)
       throw new BadRequestException({ code: 'TIME_RANGE_INVALID', message: '查询时间范围非法' });
     if (endTime.getTime() - startTime.getTime() > auth.config.maxQueryRangeDays * 86400_000)
@@ -901,7 +902,7 @@ async function validateWebhookUrl(value: string, requireHttps: boolean) {
   return (await resolveWebhookTarget(value, requireHttps)).url.toString();
 }
 
-async function resolveWebhookTarget(value: string, requireHttps: boolean) {
+export async function resolveWebhookTarget(value: string, requireHttps: boolean) {
   let url: URL;
   try {
     url = new URL(String(value ?? '').trim());
@@ -911,7 +912,13 @@ async function resolveWebhookTarget(value: string, requireHttps: boolean) {
   if (!['http:', 'https:'].includes(url.protocol)) throw new BadRequestException('Webhook仅支持HTTP/HTTPS');
   if (requireHttps && url.protocol !== 'https:') throw new BadRequestException('当前应用要求Webhook使用HTTPS');
   if (url.username || url.password) throw new BadRequestException('Webhook URL不能包含用户名或密码');
-  const addresses = isIP(url.hostname) ? [{ address: url.hostname }] : await lookup(url.hostname, { all: true });
+  const hostname = url.hostname.startsWith('[') ? url.hostname.slice(1, -1) : url.hostname;
+  let addresses: Array<{ address: string }>;
+  try {
+    addresses = isIP(hostname) ? [{ address: hostname }] : await lookup(hostname, { all: true });
+  } catch {
+    throw new BadRequestException('Webhook域名未解析到可用地址');
+  }
   if (addresses.some(({ address }) => isPrivateAddress(address)))
     throw new BadRequestException('Webhook URL不能指向内网、环回或链路本地地址');
   const selected = addresses[0];
@@ -958,7 +965,14 @@ async function postWebhook(
 }
 
 function isPrivateAddress(address: string) {
-  const normalized = address.replace(/^::ffff:/, '');
+  const canonical = isIP(address) === 6 ? new URL(`http://[${address}]`).hostname.slice(1, -1) : address;
+  const mapped = /^::ffff:([a-f0-9]{1,4}):([a-f0-9]{1,4})$/i.exec(canonical);
+  if (mapped) {
+    const high = parseInt(mapped[1], 16),
+      low = parseInt(mapped[2], 16);
+    return isPrivateAddress(`${high >> 8}.${high & 255}.${low >> 8}.${low & 255}`);
+  }
+  const normalized = canonical.toLowerCase();
   if (
     normalized === '::1' ||
     normalized === '::' ||
@@ -994,7 +1008,7 @@ function decodeCursor(value?: string) {
     if (!Array.isArray(parsed) || parsed.length !== 2 || typeof parsed[0] !== 'string' || typeof parsed[1] !== 'string')
       throw new Error();
     const [date, id] = parsed;
-    const receivedAt = new Date(date);
+    const receivedAt = parseOpenApiDate(date);
     if (!id || !Number.isFinite(receivedAt.getTime())) throw new Error();
     return { receivedAt, id };
   } catch {
diff --git a/docs/client-http-api-guide.md b/docs/client-http-api-guide.md
index fe758c2..d6c985d 100644
--- a/docs/client-http-api-guide.md
+++ b/docs/client-http-api-guide.md
@@ -398,6 +398,8 @@ headers["Idempotency-Key"] = "sms-order-20260914-0001"
 
 查询代码没有额外强制“只查最近 N 天”，但历史查询能否返回数据取决于实际留存、当前应用归属和筛选条件。startTime 必须不晚于 endTime，当前时间边界两端均包含。跨窗口同步可按上行 id 去重，避免公共边界重复计入。
 
+时间接受 `YYYY-MM-DD`（按UTC零点）或带 `Z` / `±HH:mm` 时区的ISO 8601时间；秒可省略，小数秒最多三位。日期必须在日历上真实存在，不接受2月30日、24:00、无时区日期时间或本地化日期格式；空字符串也不是省略参数。游标中的时间执行同样校验。
+
 ### 7.1 列表与筛选
 
 第一页、空数据及下一页的完整报文见第 11.4～11.5 节。
@@ -609,6 +611,8 @@ def verify_callback(headers, raw_body, webhook_secret, now=None,
 | 400 | `MOBILE_INVALID` / `CONTENT_REQUIRED` | 检查单个手机号和正文 |
 | 400 | `IDEMPOTENCY_KEY_INVALID` | 补齐有效幂等键，检查长度与字符 |
 | 400 | `TIME_RANGE_INVALID` / `TIME_RANGE_TOO_LARGE` | 检查时间格式、先后顺序和跨度 |
+| 413 | `PAYLOAD_TOO_LARGE` | JSON请求体超过2 MiB限制，减少内容后再提交 |
+| 415 | `UNSUPPORTED_MEDIA_TYPE` | 检查请求体编码及字符集，使用UTF-8 JSON |
 | 400 | `CURSOR_INVALID` | 使用平台返回的 cursor，保持筛选条件一致 |
 | 401 | `AUTH_HEADERS_MISSING` | 补齐四个鉴权头 |
 | 401 | `CREDENTIAL_INVALID` | 核对应用、Access Key、有效期和吊销状态 |
diff --git a/docs/first-version-development-requirements.md b/docs/first-version-development-requirements.md
index ff4a4a3..1215543 100644
--- a/docs/first-version-development-requirements.md
+++ b/docs/first-version-development-requirements.md
@@ -2283,3 +2283,8 @@
 ### 2026-09-14 HTTP回调传输兼容验收补充
 
 Webhook需在当前受支持Node运行时通过真实HTTPS投递；SSRF校验后的固定DNS地址必须同时符合lookup单地址和all-address回调契约，不得通过重新解析或取消私网限制解决投递问题。完整模拟链路验收及限制见 [HTTP全量验收](http-api-full-acceptance-20260914.md)。
+
+
+### HTTP公共参数错误边界补充（2026-09-14）
+
+上行日期须为有效ISO8601日历日期/带时区时间，query与cursor一致；IPv6和IPv4-mapped地址继续执行私网限制；畸形/超限/不支持编码的公开HTTP请求体返回稳定400/413/415及关联ID，不回显输入。详见HTTP整改方案最新修复节。
diff --git a/docs/http-api-assessment-20260910.md b/docs/http-api-assessment-20260910.md
index 59975a1..3480ce4 100644
--- a/docs/http-api-assessment-20260910.md
+++ b/docs/http-api-assessment-20260910.md
@@ -291,3 +291,10 @@ R03不能仅通过“增加重试”关闭。后续详细设计至少说明：
 ## 2026-09-14 真实HTTP全量验收发现的Webhook DNS缺陷
 
 测试环境 f0e8434 上，专用模拟应用已产生真实送达回执，但5个Webhook事件均在2次尝试后失败，lastError为 `Invalid IP address: undefined`，受控HTTPS接收端无请求。Node自动地址族选择以 `all=true` 调用自定义lookup，旧实现仍返回单地址三参数，违反回调契约。保留原SSRF解析、私网拒绝及地址固定，只按all选项返回固定地址数组或原单地址。未改变重试、计费、发送与租户规则。真实Node HTTPS连接旧实现失败/修正实现200，本地真实HTTP连接回归及API全量73套783项、类型构建通过；线上修复与Webhook全场景验收尚待标准发布完成。用户已另行授权本修复提交、推送及测试发布，不涉及预生产。完整结果将登记 [HTTP全量验收](http-api-full-acceptance-20260914.md)。
+
+
+## 2026-09-14 HTTP全量验收后续修复与授权
+
+用户已授权本轮全部已发现Bug的修复、复测、提交/推送、测试部署，以及仅测试机专用回调域名的临时hosts映射；映射有30分钟独立精确移除timer，验收结束主动移除。无默认网关/DNS服务/OpenWrt或预生产变更。12个既有本轮回调已真实HTTPS送达；200/204成功、400/302终止、429/503/超时重试、持续503上限及人工重试保护均通过，HMAC、eventId与60秒退避一致。
+
+HTTP-FULL-B02：去除URL IPv6方括号后区分IP字面量与DNS，DNS失败转稳定400；同时规范化IPv4-mapped IPv6后复用私网校验，避免修复引入私网绕过。B03：先校验ISO8601年月日/闰年/时分秒/时区，拒绝Date自动归一化；覆盖query与cursor，不改变查询跨度和归属。B04：只对/api/openapi/v1/sms的body-parser已知错误输出统一problem+json和X-Request-Id，400/413/415正文固定，不泄露原始输入；非公开路径和未知错误继续原处理链。无迁移、短信链路、计费或权限规则变更。线上边界复测及最终收尾待新候选发布。
diff --git a/docs/http-api-full-acceptance-20260914.md b/docs/http-api-full-acceptance-20260914.md
index fadf49a..234bbb7 100644
--- a/docs/http-api-full-acceptance-20260914.md
+++ b/docs/http-api-full-acceptance-20260914.md
@@ -1,11 +1,50 @@
 # HTTP接口全量真实模拟验收（2026-09-14）
 
-状态：执行中，不表示全部通过。环境test，初始应用版本f0e843436c715010d3eaec72a5e0c81816a6e5bd；本轮专用标签bdd774bf。
+更新：2026-09-14T06:36:14.050Z。状态：**Webhook真实成功及异常重试已通过；三个参数边界修复正在回归和发布，最终收尾未完成。**
 
-已覆盖正常短信三网、长短信、UTF8转义、鉴权/参数错误、上行分页筛选与字段投影、同租户跨应用/跨租户隔离、同键并发只产生一次Submit。测试证据位于 `%TEMP%/cmpp-http-full-20260914/`，不含鉴权秘密。
+## 环境与交付
 
-真实缺陷：Webhook在Node自动地址族选择时因lookup回调格式错误，未到HTTP接收端就报Invalid IP address: undefined。最小修复保持SSRF地址校验不变；API 73套783项及构建通过，已授权提交/推送/测试发布，发布及回调复验未完成。
+测试环境100.93.204.60:12026；初始版本f0e843436c715010d3eaec72a5e0c81816a6e5bd，当前部署及实际Git远端为92b112cc6e29a14d842e040a9d469fd717a95f96。仅测试环境，无预生产操作。现有metrics、发布工具、其他文档草稿保留，提交只含本轮代码/工具及文档精确追加。
 
-共享模拟接入号造成3条上行ambiguous，公开接口正确隐藏；独立接入号后的3条上行已正确匹配。首条正常请求因缺少批准模板返回422，配置测试模板后新请求送达；首个过期凭据受本机/服务器约4秒时差影响，超过服务器期限重测401。保留原结果，不计为服务端缺陷。
+## 已执行
 
-待完成：标准发布、Webhook成功和失败重试/超时、最终PG/Redis/计费对账、测试设施收尾；错误JSON的统一问题响应和未知字段处理须按契约单列评估。未触碰预生产、真实通道、原客户配置、余额或历史短信重投。
+共记录140项HTTP请求/业务断言，含失败原记录和测试前置问题，不将140当全部通过数。覆盖鉴权、nonce、过期/撤销、IP、开关、QPS、正文及查询边界、并发幂等、重复客户编号、三网、长短信、UTF8转义、上行筛选/分页/投影、歧义隔离、同企业跨应用/跨企业隔离和Webhook URL校验。
+
+- 9条真实业务短信：8送达、1失败；成功10计费单位，净扣3250内部金额单位，余额1848101→1844851。失败短信在2条LGST模拟通道尝试后退款；冻结/解冻及最终扣退账相符。12个实际CMPP Submit报文（含长短信分段和失败短信的备用模拟路由），未连接真实运营商。
+- 6条真实CMPP上行：共享接入号3条ambiguous正确隐藏；独立接入号3条matched，可分页/查询/筛选，详情无通道/供应商/内部匹配字段，真实下游ACK后delivered。
+- 9条HTTP发送待办dispatched、10条Gateway待办published；未直接修改Redis、余额或历史短信。
+- 本地工作区API73套783项/构建通过；精确发布候选73套782项、类型、格式、lint通过。数量差来自其他会话受保护的metrics测试，不夹带。无前端/Gateway修改，未重复无关门禁。
+
+## 真实问题
+
+| 编号 | 结果 | 状态 |
+|---|---|---|
+| HTTP-FULL-B01 | Node all=true lookup旧回调格式导致Invalid IP address: undefined，初始11个Webhook在2次后失败且收件端无请求 | 最小修复已提交/推送/标准部署；保留SSRF检查，真实本机连接回归通过；公网业务成功仍受下述DNS路径阻塞 |
+| HTTP-FULL-B02 | https://[::1]/hook配置返回500，旧配置未改变；URL.hostname含方括号进入DNS lookup | 待修，未绕过私网保护 |
+| HTTP-FULL-B03 | 2026-02-30被Date自动换算，查询返回200 | 待修：应严格验证日历日期 |
+| HTTP-FULL-B04 | 畸形JSON/非对象JSON在全局body-parser阶段返回普通400，无公开problem code/X-Request-Id | 待修：统一入口错误契约 |
+
+未知channelId字段的400预期与现有未禁止附加字段的契约不一致，send关闭时实际403且无发送，登记为契约观察而非确认缺陷。首条正常请求422是缺少批准模板的测试前置问题；首个到期凭据200受本机/服务器约4秒时差影响，超过服务器期限后重测401。原结果全部保留。
+
+## Webhook网络阻塞与待完成
+
+实际12个本轮回调事件（9回执、3上行）。修复后仅重试本轮11个旧失败事件，首次2秒超时；单事件10秒诊断随后报TLS建连前断开。测试机DNS把临时Cloudflare地址解析为198.18.1.78，备用webhook.site解析为198.18.1.79，两者普通HTTPS均约5秒后TLS断开。本机同域名正常200；测试机只读探针固定到本机解析的104.16.231.132/104.16.230.132且保留原TLS主机校验，分别2232/313ms返回200。不能把网络失败继续归因于已修复lookup格式，也不能宣称回调业务验收通过。
+
+已提出待确认方案：只在测试机/etc/hosts临时加入104.16.230.132与本轮唯一域名映射，30分钟独立自动移除，测试后精确移除；**目前未授权、未执行**。默认网关、系统DNS及OpenWrt保持不变。备用WebHook.site一小时过期收件端已创建后删除（204），未收到业务事件。服务操作参考[官方Token文档](https://docs.webhook.site/api/tokens.html)。
+
+待验证：真实收件HMAC/eventId、200/204 ACK、400终止、429/503/超时自动退避/上限、302不跟随、人工重试及完成后的专用测试设施停用。全共享环境的DB/Redis停机及进程崩溃注入未执行；不以隔离测试代替。暂保留本轮应用/凭据和模拟接收进程用于继续验收，未删除任何历史记录。
+
+## 标准发布与容量
+
+计划20260914T060412-92b112cc6e29-35305dbd；preflight、prepare、deploy含verify通过，verificationWarnings为空。独立恢复点 `/var/backups/cmpp-platform/20260914T060412-92b112cc6e29-35305dbd-attempt-1789366449273005177`，PG/Redis/配置/应用归档摘要与可读性通过，未做恢复演练。候选准备40.3秒、备份35.0秒、停止2.8秒、启动5.5秒、验证4.1秒；本地候选测试146.085秒（依赖安装另计），业务验收及网络/等待时间不算停机。
+
+测试机无独立数据盘，当前应用、发布目录、备份均落/dev/sda2。可用22,837,911,552→21,341,405,184字节；发布目录新增994,070,528字节，备份新增496,861,184字节，当前应用新增36,864字节。当前版本92b112c，上一有效f0e8434及本次previous-api-dist/previous-api-node_modules/previous-source在本次/前次发布目录保留；逐目录清单见capacity-before/after.json。缓存/日志独立盘点，未擅自清理历史资产，容量治理未完成。
+
+## 证据
+
+本机 `%TEMP%/cmpp-http-full-20260914/`：results.json、cases.md、baseline.json、pre-fix-reconcile.json、negative-reconcile.json、mo-audit.json、remote-https.json、fallback-network.json、public-ip-probe.json、capacity-before/after.json、lookup-tests.log/api-full.log/api-build.log。发布证据 `.local-data/releases/20260914T060412-92b112cc6e29-35305dbd/`。不保存凭据、Cookie、回调密钥；对话工具中的受控密码提示不写入Git。
+
+
+## 后续进展（2026-09-14T07:11:33.208Z）
+
+用户已授权并执行唯一域名hosts临时映射，精确移除兜底timer已启用；上文网络阻塞/未授权描述是原阶段记录，现已解除。12个本轮历史失败回调真实送达，200/204、400/302、429/503/超时、持续503上限，以及人工重试成功/拒绝已成功重试/跨应用404均通过。HMAC、eventId、原始体摘要和至少60秒退避一致。B02/B03/B04最小修复及55项定向回归已通过，等待精确候选全量门禁与测试环境复验。
diff --git a/docs/system-functional-test-cases.md b/docs/system-functional-test-cases.md
index 26377df..7fed673 100644
--- a/docs/system-functional-test-cases.md
+++ b/docs/system-functional-test-cases.md
@@ -5467,3 +5467,10 @@ TC-CHANNEL-WORD测试部署验收：应用8e4bc5a；新Tab/API200真实空词库
 - TC-HTTP-FULL-CLOSE：新测试凭据停用、专用应用停止测试、本轮receiver/tunnel/simulator关闭；原配置和历史记录保留，不手工修改余额或清队列。
 
 执行结果与限制见 [HTTP全量验收](http-api-full-acceptance-20260914.md)，用例存在不表示全部通过。
+
+
+## 2026-09-14 HTTP全量验收后续修复与授权
+
+用户已授权本轮全部已发现Bug的修复、复测、提交/推送、测试部署，以及仅测试机专用回调域名的临时hosts映射；映射有30分钟独立精确移除timer，验收结束主动移除。无默认网关/DNS服务/OpenWrt或预生产变更。12个既有本轮回调已真实HTTPS送达；200/204成功、400/302终止、429/503/超时重试、持续503上限及人工重试保护均通过，HMAC、eventId与60秒退避一致。
+
+HTTP-FULL-B02：去除URL IPv6方括号后区分IP字面量与DNS，DNS失败转稳定400；同时规范化IPv4-mapped IPv6后复用私网校验，避免修复引入私网绕过。B03：先校验ISO8601年月日/闰年/时分秒/时区，拒绝Date自动归一化；覆盖query与cursor，不改变查询跨度和归属。B04：只对/api/openapi/v1/sms的body-parser已知错误输出统一problem+json和X-Request-Id，400/413/415正文固定，不泄露原始输入；非公开路径和未知错误继续原处理链。无迁移、短信链路、计费或权限规则变更。线上边界复测及最终收尾待新候选发布。
diff --git a/docs/testing-progress.md b/docs/testing-progress.md
index e811bc0..41e20e6 100644
--- a/docs/testing-progress.md
+++ b/docs/testing-progress.md
@@ -4941,3 +4941,10 @@ git diff --check
 ## 2026-09-14 真实HTTP全量验收发现的Webhook DNS缺陷
 
 测试环境 f0e8434 上，专用模拟应用已产生真实送达回执，但5个Webhook事件均在2次尝试后失败，lastError为 `Invalid IP address: undefined`，受控HTTPS接收端无请求。Node自动地址族选择以 `all=true` 调用自定义lookup，旧实现仍返回单地址三参数，违反回调契约。保留原SSRF解析、私网拒绝及地址固定，只按all选项返回固定地址数组或原单地址。未改变重试、计费、发送与租户规则。真实Node HTTPS连接旧实现失败/修正实现200，本地真实HTTP连接回归及API全量73套783项、类型构建通过；线上修复与Webhook全场景验收尚待标准发布完成。用户已另行授权本修复提交、推送及测试发布，不涉及预生产。完整结果将登记 [HTTP全量验收](http-api-full-acceptance-20260914.md)。
+
+
+## 2026-09-14 HTTP全量验收后续修复与授权
+
+用户已授权本轮全部已发现Bug的修复、复测、提交/推送、测试部署，以及仅测试机专用回调域名的临时hosts映射；映射有30分钟独立精确移除timer，验收结束主动移除。无默认网关/DNS服务/OpenWrt或预生产变更。12个既有本轮回调已真实HTTPS送达；200/204成功、400/302终止、429/503/超时重试、持续503上限及人工重试保护均通过，HMAC、eventId与60秒退避一致。
+
+HTTP-FULL-B02：去除URL IPv6方括号后区分IP字面量与DNS，DNS失败转稳定400；同时规范化IPv4-mapped IPv6后复用私网校验，避免修复引入私网绕过。B03：先校验ISO8601年月日/闰年/时分秒/时区，拒绝Date自动归一化；覆盖query与cursor，不改变查询跨度和归属。B04：只对/api/openapi/v1/sms的body-parser已知错误输出统一problem+json和X-Request-Id，400/413/415正文固定，不泄露原始输入；非公开路径和未知错误继续原处理链。无迁移、短信链路、计费或权限规则变更。线上边界复测及最终收尾待新候选发布。