@@ -105,3 +105,5 @@ Builtin transport: [direct HTTP](notes/implemented/architecture/2026-10-18-nativ
 - [Remove retired project compatibility](notes/implemented/architecture/2026-10-22-remove-legacy-compatibility.md) · [verification](evidence/verify/2026-10-22-remove-legacy-compatibility.md)
 
 - [Compatibility cleanup remote acceptance](evidence/verify/2026-10-22-remove-legacy-acceptance.md)
+
+- [Current compatibility-removal documentation verification](evidence/verify/2026-10-22-remove-legacy-docs.md).
@@ -0,0 +1,19 @@
+# Verification: current documentation after compatibility removal
+
+- Date: 2026-10-22
+- Scope: contributor entry point, current English/Chinese guides and references, documentation indexes and changelog; runtime code is unchanged.
+- Result: PASS for local documentation checks; latest-head remote CI remains required before merge.
+
+## Behavior and sources
+
+The maintainer requested one current project contract. Compare documentation with the merged native method signatures, provider-owned port hooks, official template API, single configuration registry and always-on server policy engine. Remove obsolete import/method/credential aliases, inert retry fields, old template API selectors and base64 transfer routes from current instructions. Standard upstream behavior and immutable historical engineering captures remain separately owned.
+
+The implementation and real-component results are recorded in [original verification](2026-10-22-remove-legacy-compatibility.md) and [merged acceptance](2026-10-22-remove-legacy-acceptance.md). This documentation follow-up creates no cloud resources and performs no release or manual deployment.
+
+## Validation
+
+- PASS: `bash scripts/check-repo-health.sh` — 106 passes, 1 historical warnings, zero failures.
+- PASS: `make hygiene` — no local paths or credential-like strings.
+- PASS: `git diff --check` — no whitespace errors.
+- Reviewed current method signatures, policy token setup, file route ownership and configuration descriptors against the changed documentation. Retired names remain only as explicit rejection/removal descriptions or historical review material.
+- The latest-head remote CI and Markdown-link checks remain mandatory; product/cloud results belong to the linked implementation evidence, not to these document checks.
@@ -37,3 +37,9 @@ Issue: https://github.com/Alibaba-Agent-Sandbox/python-sdk/issues/84
 Verified merged implementation: https://github.com/Alibaba-Agent-Sandbox/python-sdk/pull/85. The source merge commit is `d1a54f78e447bc67b90dbfdf48168b020275c871`.
 
 - [Remote acceptance](../../../evidence/verify/2026-10-22-remove-legacy-acceptance.md)
+
+## Current documentation follow-up
+
+Remove stale instructions that still advertised retired imports, credential aliases, retry settings, template selectors and server transfer routes. The current API references, provider boundary pages and contributor entry point describe the merged implementation.
+
+- [Documentation verification](../../../evidence/verify/2026-10-22-remove-legacy-docs.md)
@@ -38,7 +38,6 @@ python-sdk/
 │   │   ├── api/                   # High-level API and server client; provider-neutral lifecycle/session contracts
 │   │   ├── providers/             # Backend/session adapters; shared envd wire; external Node engine client
 │   │   ├── agent/                 # AI agent tooling: MCP server, tool definitions
-│   │   ├── compat/                # Legacy migration helpers (preserve their explicit contract)
 │   │   ├── declarative/           # @sandbox decorator, config, serializer
 │   │   ├── session/               # Session persistence: local (LocalSessionStore)
 │   │   └── utils/                 # Async bridge, secret store, logging, registry, retry
@@ -88,7 +87,6 @@ graph TB
     subgraph Upper["Upper Layers"]
         Agent["Agent/MCP — MCP server, tool defs"]
         Decl["Declarative — @sandbox decorator"]
-        Compat["Compat — E2B migration helper"]
         Server["Server — SandboxServer SDK, HTTP routes"]
         Sess["Session — Persistence"]
     end
@@ -102,7 +100,6 @@ graph TB
 
     Agent --> L3
     Decl --> L3
-    Compat --> L3
     Server --> L0U
     Sess --> L3
     L3 --> L2 --> L1
 
@@ -8,6 +8,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Fixed
+
+- Align contributor guidance and English/Chinese API, configuration and provider documentation with the removed project compatibility surface. / 同步贡献指南及中英文 API、配置和 Provider 文档，清除已删除项目兼容接口的旧说明。
+
 ### Removed
 
 - Pre-release project compatibility: old template factories/APIs and selector flags, import aliases, migration commands, deprecated method aliases, old server transfer routes, custom AK/SK token exchange and implicit provider URL/port fallbacks.
 
@@ -50,7 +50,7 @@ Provider management operations are available through `agent_sandbox.providers.co
 - **MCP server** — expose sandbox operations as MCP tools for LLM agents.
 - **Declarative decorator** — `@sandbox` turns a plain function into a remote sandbox execution with automatic serialisation.
 - **Session persistence** — save and restore sandbox state across runs.
-- **E2B-shaped methods** — `agent_sandbox.compat` re-exports the standard Sandbox and AsyncSandbox; see [Migrate from E2B](docs/en/guide/migrate-from-e2b.md).
+- **Standard sync/async clients** — `agent_sandbox` exports the standard Sandbox and AsyncSandbox; see [Migrate from E2B](docs/en/guide/migrate-from-e2b.md).
 
 ## Server SDK
 
 
@@ -48,7 +48,7 @@ Node.js 项目，位于 [`agent-sandbox`](https://github.com/alibaba-agent-sandb
 - **MCP Server** —— 将沙箱操作暴露为 MCP 工具，供 LLM Agent 调用。
 - **声明式装饰器** —— `@sandbox` 将普通函数变为远程沙箱执行，自动序列化。
 - **会话持久化** —— 跨运行保存和恢复沙箱状态。
-- **E2B 风格方法名** —— `agent_sandbox.compat` 导出标准 Sandbox 与 AsyncSandbox，见[从 E2B 迁移](docs/zh/guide/migrate-from-e2b.md)。
+- **标准同步与异步客户端** —— `agent_sandbox` 导出标准 Sandbox 与 AsyncSandbox，见[从 E2B 迁移](docs/zh/guide/migrate-from-e2b.md)。
 
 ## Server SDK
 
 
@@ -14,7 +14,7 @@ This repository holds the Python SDK as two lock-step PyPI distributions — `ag
 
 ### Core Principles
 
-1. **Pinned standard behavior and explicit provider extensions** — Root `Sandbox` is synchronous; `AsyncSandbox` is asynchronous. Standard and interpreter clients follow the Alibaba-supported E2B baseline through an owned MIT source port. `agent_sandbox.compat` re-exports the standard clients. Provider/server/declarative extensions use `ProviderSandbox`; `ABX_PROVIDER` does not switch the standard clients' protocol.
+1. **Pinned standard behavior and explicit provider extensions** — Root `Sandbox` is synchronous; `AsyncSandbox` is asynchronous. Standard and interpreter clients follow the Alibaba-supported E2B baseline through an owned MIT source port. Provider/server/declarative extensions use `ProviderSandbox`; `ABX_PROVIDER` does not switch the standard clients' protocol.
 2. **AI-First** — MCP Server as a first-class citizen, coding agents hosted through the Agents API
 3. **Explicit connection settings** — Reuse the existing Alibaba API key, API URL and sandbox domain; backend-dependent capabilities remain conditional.
 
@@ -128,7 +128,6 @@ Chinese copies of these pages live under `docs/zh/`. `repository-layout.md` is E
 | MCP Server (Streamable HTTP) | **Implemented** | `mcp_http.py` |
 | FC deployment artifact application | **Implemented** | `agent_sandbox.agent.mcp_http:asgi_app`; the artifact is generated by `abx mcp deploy` in the CLI. See [mcp-server.md](design/mcp-server.md#7-fc-deployment) |
 | Template build/push/deploy | **In the CLI** | `abx template build` and `abx template deploy`; the SDK does not build templates |
-| E2B migration helper | **Implemented (partial)** | `agent_sandbox.compat` |
 | One environment variable per configuration key (SDK) | **Implemented** | See [Configuration](reference/configuration.md); CLI spec in `cli/docs/design/providers-and-credentials-cli.md` |
 | Provider plugins (SDK, `python -m agent_sandbox.providers`) | **Implemented** | See [Providers](guide/providers.md). The CLI loads installed `node`, `exec` and `rest` plugins (`abx provider`, `abx --provider`) |
 | Persistent sandbox | **Future** | Requires underlying platform support |
 
@@ -260,7 +260,7 @@ The CLI (`abx`) formerly lived in `src/agent_sandbox/cli/` (Click commands under
 
 ## 6. Design Principles
 
-1. **E2B-shaped, not E2B-compatible**: L3 uses E2B-shaped method names and ships a small migration helper (`agent_sandbox.compat`); L2 implements the protocol independently without depending on the E2B SDK
+1. **Explicit standard and provider contracts**: L3 uses E2B-shaped method names through the maintained standard clients; native provider extensions use ProviderSandbox without depending on the E2B SDK
 2. **Progressive Complexity**: Users start at L3 and explore downward or use advanced features upward as needed
 3. **Zero-Config Defaults**: Works out of the box with sensible defaults; just set the `ABX_SANDBOX_API_KEY` environment variable to get started
 4. **Alibaba Cloud Native**: Built for the Alibaba Cloud FC sandbox service
@@ -269,6 +269,6 @@ The CLI (`abx`) formerly lived in `src/agent_sandbox/cli/` (Click commands under
 
 - [Provider implementation boundaries](provider-isolation.md)
 
-Provider configuration discovery is assembled lazily by the package composition root. Transport consumes a low-level `ProviderSchema` value and an injected resolver from `_provider_schema.py`; it does not import the provider registry. Builtin configuration resolves without provider discovery. Registered, entry-point and installed providers retain the registry selection and derive/default/inheritance rules. The existing `transport.config.ProviderSchema` import remains an alias of the same schema class.
+Provider configuration discovery is assembled lazily by the package composition root. Transport consumes a low-level `ProviderSchema` value and an injected resolver from `_provider_schema.py`; it does not import the provider registry. Builtin configuration resolves without provider discovery. Registered, entry-point and installed providers retain the registry selection and derive/default/inheritance rules.
 
-Builtin platform/envd HTTP uses one transport attempt. Legacy retry fields are compatibility data, with the exact boundary in [configuration](../reference/configuration.md#legacy-retry-compatibility); engine recovery remains separate.
+Builtin platform/envd HTTP uses one transport attempt; see [configuration](../reference/configuration.md#transport-attempts). Engine read recovery remains separate.
@@ -51,8 +51,6 @@ one-sided (section 4).
 | `GET /files/download-stream` | `files_download_stream` | `files.read/download` | `server.files.download(path)`, `.read_text`, `.download_file` | NEW |
 | `POST /files/archive` | `files_archive` | — | `server.files.archive(paths, format)` | NEW |
 | `GET /files/watch` | `files_watch` | `files.watch` (WatchDir) | `server.files.watch(path)` -> async iterator of `ServerWatchEvent` (a `WatchEvent` subclass with `is_dir`) | NEW server + client |
-| `POST /upload` (legacy) | `upload` | — | `server.files.upload_legacy(path, data)` | NEW (documented legacy) |
-| `GET /download` (legacy) | `download` | — | `server.files.download_legacy(path)` | NEW (documented legacy) |
 
 ### 2.3 Processes
 
@@ -64,7 +62,7 @@ one-sided (section 4).
 | `GET /process/list` | `process_list` | `commands.list` | `server.process.list()` | NEW |
 | `GET /process/{pid}` | `process_detail` | `commands.connect` (status part) | `server.process.get(pid)` | NEW |
 | `POST /process/{pid}/signal` | `process_signal` | `commands.send_signal/kill` | `server.process.signal(pid, sig)`, `.kill(pid)` | NEW |
-| `POST /process/{pid}/stdin` | `process_stdin` | `commands.send_stdin` | `server.process.send_stdin(pid, data)` | NEW server + client |
+| `POST /process/{pid}/stdin` | `process_stdin` | `commands.send_input` | `server.process.send_stdin(pid, data)` | NEW server + client |
 | `GET /process/{pid}/output` | `process_output` | `commands.connect` (output part) | `server.process.output(pid, since, wait)` | NEW server + client |
 
 ### 2.4 Terminal
@@ -117,7 +115,7 @@ one-sided (section 4).
 | `commands.start` (background) | `process_start` | covered; added `env`, `capture_output`, `stdin` |
 | `commands.list` | `process_list` | covered |
 | `commands.connect(pid)` | **missing output attach** | **added** `process_output` (+ `?wait`) |
-| `commands.send_stdin` | **missing** | **added** `process_stdin` |
+| `commands.send_input` | **missing** | **added** `process_stdin` |
 | `commands.send_signal/kill` | `process_signal` | covered |
 | `ProcessProtocol.update` (pty resize via process) | `pty_resize` | **added** (PTY only) |
 | `get_terminal` (envd WS `/terminal`) | PTY WS on 9001 with REST session create | client `server.pty` implements the server protocol; envd path unchanged |