dp-web4 · dp-web4 · Apr 17, 2026 · Apr 17, 2026
diff --git a/SESSION_FOCUS.md b/SESSION_FOCUS.md
@@ -2,14 +2,20 @@
 
 *Current sprint, SDK status, and active work. Updated by operator and autonomous sessions.*
 
-*Last updated: 2026-04-17 (Sprint 39)*
+*Last updated: 2026-04-17 (Sprint 41)*
 
 ---
 
 ## Current Sprint
 
 **See `docs/SPRINT.md` for full sprint plan and task details.** Do not duplicate sprint content here — SPRINT.md is the source of truth for task scope, status, and dependencies.
 
+### Sprint 41 Summary: Remove Dead web4_sdk.py + Fix v0.26.0 Documentation Gaps (COMPLETE)
+
+| Task | Status | Notes |
+|------|--------|-------|
+| T1: Remove dead `web4_sdk.py` + fix docs | DONE | Deleted `web4_sdk.py` (dead async HTTP client for nonexistent services, not in wheel) + `test_sdk_integration.py` (14 tests). README: version 0.25.0→0.26.0, removed misleading "Client SDK" section. Quickstart docstring: v0.25.0→v0.26.0. 2613 tests, 0 new files, 2 deleted. |
+
 ### Sprint 39 Summary: SDK v0.26.0 Release Housekeeping (COMPLETE)
 
 | Task | Status | Notes |
@@ -136,7 +142,7 @@ See `docs/SPRINT.md` for full history. Highlights: JSON-LD serialization for all
 
 - **Version**: 0.26.0
 - **Modules**: 22 library modules + MCP server entry point (trust, lct, atp, federation, r6, mrh, acp, dictionary, entity, capability, errors, metabolic, binding, society, reputation, security, protocol, mcp, attestation, validation, deserialize, generate, mcp_server)
-- **Tests**: 2627 passing (97.8% coverage)
+- **Tests**: 2613 passing (97.8% coverage)
 - **CLI**: `web4 info/validate/list-schemas/roundtrip/generate/selftest/trust` (7 subcommands)
 - **Exports**: 364 symbols via `web4/__init__.py`
 - **from_dict()**: 58 classmethods across 10 modules — all classes with to_dict()/as_dict() have matching from_dict()
@@ -185,28 +191,30 @@ Web4 SDK development aligns with ARIA grant requirements:
 ## Recent Commits
 
 ```
+91ed230 Sprint 36 T1: Replace stale examples with v0.25.0 quickstart (#160)
+64add4c Sprint 39 T1: SDK v0.26.0 release housekeeping (#163)
 759eaef Sprint 38 T1: ruff format codebase-wide + CI enforcement (#162)
 e355a19 Sprint 37 T1: ruff check lint cleanup + CI enforcement (#161)
-3e6ca32 [Publisher] Fix PDF date (February→April 2026), rebuild artifacts
 4a97ff7 Sprint 35 T1: CI workflow hardening — strict mypy + wheel verification (#158)
-2b5292f Sprint 34 T1: SDK v0.25.0 release housekeeping (#156)
 ```
 
 ---
 
 ## Open PRs
 
-- PR #160: Sprint 36 T1 — Replace stale examples with v0.25.0 quickstart (pending review)
+- PR #164: Sprint 40 T1 — Wire examples/quickstart.py into CI wheel smoke job (pending review)
 
 ### Closed PRs (recent)
 
-- PR #159 CLOSED (superseded) — attempted `ruff format` sweep but shipped with failing lint and stray session-report artifacts; its lint debt was fixed separately in PR #161 (Sprint 37 T1, merged), and its `ruff format` intent is addressed in Sprint 38 T1 on a clean branch.
+- PR #163 MERGED — Sprint 39 T1: SDK v0.26.0 release housekeeping
+- PR #160 MERGED — Sprint 36 T1: Replace stale examples with v0.25.0 quickstart
+- PR #159 CLOSED (superseded) — attempted `ruff format` sweep; intent addressed in Sprint 38
 
 ---
 
 ## Completeness Summary
 
-- All 39 sprints COMPLETE (Sprints 1-39)
+- All 41 sprints COMPLETE (Sprints 1-41)
 - All 9 JSON-LD schemas with cross-language validation vectors (278 total, in pytest)
 - All `to_jsonld()` functions have `from_jsonld()` inverses (API symmetry complete)
 - All `to_dict()`/`as_dict()` methods have `from_dict()` inverses (58 round-trip methods total)
@@ -227,7 +235,8 @@ e355a19 Sprint 37 T1: ruff check lint cleanup + CI enforcement (#161)
 - All 23 generate() types pass roundtrip fidelity (generate → from_jsonld → to_jsonld = identical)
 - `ruff check web4/ tests/` passes with 0 errors — CI enforces lint on source + tests
 - `ruff format --check web4/ tests/test_*.py` passes with 0 changes — CI enforces formatting on source + tests
+- Dead `web4_sdk.py` removed — async HTTP client for nonexistent services, not distributed in wheel
 
 ---
 
-*Updated by autonomous session, 2026-04-17 (Sprint 39 — SDK v0.26.0 release housekeeping)*
+*Updated by autonomous session, 2026-04-17 (Sprint 41 — Remove dead web4_sdk.py + fix v0.26.0 docs)*
diff --git a/docs/SPRINT.md b/docs/SPRINT.md
@@ -1,12 +1,38 @@
 # Web4 Sprint Plan
 
 **Created**: 2026-03-14
-**Updated**: 2026-04-17 (Sprint 39)
+**Updated**: 2026-04-17 (Sprint 41)
 **Phase**: Development
 **Track**: web4 (Legion)
 
 ---
 
+## Sprint 41: Remove Dead web4_sdk.py + Fix v0.26.0 Documentation Gaps (2026-04-17)
+
+Sprint 36 deleted the example scripts that imported from `web4_sdk.py` because they
+caused `ImportError` (referencing nonexistent microservices). However, `web4_sdk.py`
+itself (~1500 lines) and its test file were left behind. The README still documented
+it as a usable Client SDK. Additionally, the README and quickstart docstring still
+referenced v0.25.0 despite the v0.26.0 bump in Sprint 39.
+
+### T1: Remove dead `web4_sdk.py` + fix v0.26.0 documentation gaps
+**Status**: DONE
+**Completed**: 2026-04-17
+**Scope**:
+(1) Delete `web4_sdk.py` — async HTTP client for nonexistent services, not distributed
+in wheel (`packages.find.include = ["web4*"]`), examples deleted in Sprint 36.
+(2) Delete `tests/test_sdk_integration.py` — 14 tests for the removed module.
+(3) Update `README.md`: version 0.25.0 → 0.26.0, remove "Client SDK" section,
+remove `web4_sdk.py` from Project Structure, update test count 2627 → 2613.
+(4) Update `examples/quickstart.py` docstring: v0.25.0 → v0.26.0.
+(5) Update `docs/SPRINT.md` and `SESSION_FOCUS.md`.
+**Result**: No dead code referencing nonexistent services. README accurately reflects
+what's distributed in the wheel. All version references consistent at v0.26.0.
+2613 tests pass (14 removed with deleted module). mypy --strict clean. ruff clean.
+0 new files, 2 files deleted, 4 files modified.
+
+---
+
 ## Sprint 39: SDK v0.26.0 Release Housekeeping (2026-04-17)
 
 Three quality-improvement PRs merged since v0.25.0: CI workflow hardening (#158),

diff --git a/web4-standard/implementation/sdk/README.md b/web4-standard/implementation/sdk/README.md
@@ -8,7 +8,7 @@ specified in the [web4-standard](https://github.com/dp-web4/web4) and works with
 network services — no async, no HTTP, no external dependencies beyond the Python
 standard library.
 
-**Version**: 0.25.0 | **Python**: 3.10+ | **License**: MIT | **Typed**: PEP 561
+**Version**: 0.26.0 | **Python**: 3.10+ | **License**: MIT | **Typed**: PEP 561
 
 ## Installation
 
@@ -185,27 +185,7 @@ python -m pytest tests/ --cov=web4
 mypy --strict web4/
 ```
 
-2627 tests, 97.8% coverage, mypy strict zero-error, CI across Python 3.10-3.13.
-
-## Client SDK
-
-The `web4_sdk.py` module (separate from the `web4` package) provides an async HTTP
-client for connecting to Web4 infrastructure services. It requires `aiohttp` and
-`pynacl` and is intended for applications that communicate with running Web4 nodes.
-
-```python
-from web4_sdk import Web4Client
-
-client = Web4Client(
-    identity_url="http://localhost:8001",
-    auth_url="http://localhost:8003",
-    lct_id="lct:web4:ai:society:001",
-    private_key=key_bytes
-)
-```
-
-The client SDK re-exports canonical types from the `web4` package, so both
-`from web4 import T3` and `from web4_sdk import T3` resolve to the same objects.
+2613 tests, 97.8% coverage, mypy strict zero-error, CI across Python 3.10-3.13.
 
 ## Project Structure
 
@@ -221,9 +201,8 @@ web4/                  # Python package (22 modules + MCP server)
   generate.py          # Minimal valid JSON-LD document generation
   validation.py        # Schema validation
   ...                  # (17 more modules)
-tests/                 # 2627 tests
+tests/                 # 2613 tests
 schemas/               # JSON Schemas + JSON-LD contexts
-web4_sdk.py            # Async HTTP client (separate)
 pyproject.toml         # Package metadata (single version source)
 ```
 

diff --git a/web4-standard/implementation/sdk/examples/quickstart.py b/web4-standard/implementation/sdk/examples/quickstart.py
@@ -1,4 +1,4 @@
-"""Quickstart for the web4 Python SDK v0.25.0.
+"""Quickstart for the web4 Python SDK v0.26.0.
 
 Demonstrates the three behavioral composition points of the current SDK:
 

diff --git a/web4-standard/implementation/sdk/tests/test_sdk_integration.py b/web4-standard/implementation/sdk/tests/test_sdk_integration.py