diff --git a/package-lock.json b/package-lock.json
index d7982a5..b9cf470 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3070,7 +3070,7 @@
     },
     "packages/autogen": {
       "name": "@codespar/autogen",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3079,12 +3079,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/camel": {
       "name": "@codespar/camel",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3093,12 +3093,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/claude": {
       "name": "@codespar/claude",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3107,15 +3107,15 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/cli": {
       "name": "@codespar/cli",
-      "version": "0.5.5",
+      "version": "0.6.0",
       "license": "MIT",
       "dependencies": {
-        "@codespar/sdk": "^0.10.1",
+        "@codespar/sdk": "^0.11.0",
         "commander": "^13.0.0"
       },
       "bin": {
@@ -3131,7 +3131,7 @@
     },
     "packages/core": {
       "name": "@codespar/sdk",
-      "version": "0.10.11",
+      "version": "0.11.0",
       "license": "MIT",
       "dependencies": {
         "@codespar/types": "^0.10.1",
@@ -3148,7 +3148,7 @@
     },
     "packages/crewai": {
       "name": "@codespar/crewai",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3157,12 +3157,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/google-genai": {
       "name": "@codespar/google-genai",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3171,12 +3171,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/hermes": {
       "name": "@codespar/hermes",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3185,12 +3185,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/langchain": {
       "name": "@codespar/langchain",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3200,13 +3200,13 @@
         "zod": "^3.23.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0",
+        "@codespar/sdk": "^0.10.0 || ^0.11.0",
         "zod": ">=3.0.0"
       }
     },
     "packages/letta": {
       "name": "@codespar/letta",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3215,12 +3215,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/llama-index": {
       "name": "@codespar/llama-index",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3229,7 +3229,7 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/managed-agents-adapter": {
@@ -3251,7 +3251,7 @@
     },
     "packages/mastra": {
       "name": "@codespar/mastra",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3260,15 +3260,15 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/mcp": {
       "name": "@codespar/mcp",
-      "version": "0.5.2",
+      "version": "0.5.3",
       "license": "MIT",
       "dependencies": {
-        "@codespar/sdk": "^0.10.1",
+        "@codespar/sdk": "^0.10.1 || ^0.11.0",
         "@modelcontextprotocol/sdk": "^1.29.0"
       },
       "bin": {
@@ -3281,12 +3281,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.1"
+        "@codespar/sdk": "^0.10.1 || ^0.11.0"
       }
     },
     "packages/openai": {
       "name": "@codespar/openai",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3295,12 +3295,12 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0"
+        "@codespar/sdk": "^0.10.0 || ^0.11.0"
       }
     },
     "packages/types": {
       "name": "@codespar/types",
-      "version": "0.10.14",
+      "version": "0.10.15",
       "license": "MIT",
       "devDependencies": {
         "@types/node": "^25.6.0",
@@ -3313,7 +3313,7 @@
     },
     "packages/vercel": {
       "name": "@codespar/vercel",
-      "version": "0.4.0",
+      "version": "0.4.1",
       "license": "MIT",
       "devDependencies": {
         "@codespar/sdk": "*",
@@ -3322,7 +3322,7 @@
         "vitest": "^3.1.0"
       },
       "peerDependencies": {
-        "@codespar/sdk": "^0.10.0",
+        "@codespar/sdk": "^0.10.0 || ^0.11.0",
         "ai": ">=3.0.0"
       }
     }
diff --git a/packages/autogen/package.json b/packages/autogen/package.json
index 0cd6c86..0916f6a 100644
--- a/packages/autogen/package.json
+++ b/packages/autogen/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/autogen",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Microsoft AutoGen adapter for CodeSpar — convert session tools to AutoGen function tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -38,7 +38,7 @@
     "directory": "packages/autogen"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/camel/package.json b/packages/camel/package.json
index bc7a096..bbdb088 100644
--- a/packages/camel/package.json
+++ b/packages/camel/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/camel",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "CAMEL-AI adapter for CodeSpar — convert session tools to CAMEL function format",
   "type": "module",
   "main": "./dist/index.js",
@@ -38,7 +38,7 @@
     "directory": "packages/camel"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/claude/package.json b/packages/claude/package.json
index 691110c..421ff1a 100644
--- a/packages/claude/package.json
+++ b/packages/claude/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/claude",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Claude Agent SDK adapter for CodeSpar — convert MCP tools to Claude tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -37,7 +37,7 @@
     "directory": "packages/claude"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/cli/CHANGELOG.md b/packages/cli/CHANGELOG.md
index b6e2aaf..56ecb9f 100644
--- a/packages/cli/CHANGELOG.md
+++ b/packages/cli/CHANGELOG.md
@@ -1,5 +1,20 @@
 # @codespar/cli — changelog
 
+## 0.6.0 — 2026-07-05
+
+Offline V3 mandate verification from the terminal. See
+[codespar/codespar-core#114](https://github.com/codespar/codespar-core/pull/114).
+
+### Added
+
+- `codespar mandate verify <token>` — decodes a V3 presentation token,
+  reconstructs the canonical signing string, and verifies the agent and
+  issuer Ed25519 signatures. Pure-offline mode with `--agent-pubkey` /
+  `--issuer-pubkey` (no network, no API key); default network mode
+  resolves public keys via the agent's did:web document
+  (id.codespar.dev), still with no API key. `--json` supported; the
+  exit code tracks signature verification.
+
 ## 0.4.0 — 2026-05-04
 
 Sugar commands wrapping the SDK 0.9.0 typed meta-tool methods. None
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 9d9d9aa..dd20732 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/cli",
-  "version": "0.5.5",
+  "version": "0.6.0",
   "description": "CodeSpar CLI. The agentic OS for money movement in Latin America, from your terminal: authenticate, browse servers, mint mandates, execute tools, manage sessions, stream logs.",
   "type": "module",
   "bin": {
@@ -46,7 +46,7 @@
     "node": ">=20"
   },
   "dependencies": {
-    "@codespar/sdk": "^0.10.1",
+    "@codespar/sdk": "^0.11.0",
     "commander": "^13.0.0"
   },
   "devDependencies": {
diff --git a/packages/core/CHANGELOG.md b/packages/core/CHANGELOG.md
index be93478..9e97ea1 100644
--- a/packages/core/CHANGELOG.md
+++ b/packages/core/CHANGELOG.md
@@ -1,5 +1,14 @@
 # @codespar/sdk — CHANGELOG
 
+## 0.11.0
+
+Offline V3 mandate verification lands on the SDK as a dedicated subpath. See [codespar/codespar-core#114](https://github.com/codespar/codespar-core/pull/114).
+
+### Added
+
+- `@codespar/sdk/mandate` subpath export: `verifyMandateToken(token, { agentPublicKey, issuerPublicKey })`, `decodeMandateToken`, `reconstructSigningString`, and `verifyEd25519`. Verifies the V3 dual Ed25519 signatures (agent + platform issuer) with `node:crypto` only — no API call, no credential. Lives on a subpath (like `./testing`) so `node:crypto` stays out of the edge-safe main graph; the zero-runtime-dependency rule holds (`node:crypto` is a builtin).
+- The canonical signing string is byte-locked against the platform's frozen fixture in tests; the same fixture guards the CLI and Python implementations, so any codec drift fails all of them loudly.
+
 ## 0.10.0
 
 The hosted test-mode SDK surface lands across `@codespar/sdk`, `@codespar/types`, and the `codespar` Python package. See [codespar/codespar-core#54](https://github.com/codespar/codespar-core/pull/54).
diff --git a/packages/core/package.json b/packages/core/package.json
index cd13438..b06ac54 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/sdk",
-  "version": "0.10.11",
+  "version": "0.11.0",
   "description": "Commerce SDK for AI agents — sessions, managed auth, Complete Loop orchestration for Latin American APIs",
   "type": "module",
   "main": "./dist/index.js",
diff --git a/packages/crewai/package.json b/packages/crewai/package.json
index 68c1674..4b32897 100644
--- a/packages/crewai/package.json
+++ b/packages/crewai/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/crewai",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "CrewAI adapter for CodeSpar — convert session tools to CrewAI tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -37,7 +37,7 @@
     "directory": "packages/crewai"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/google-genai/package.json b/packages/google-genai/package.json
index 726d463..e4c50bd 100644
--- a/packages/google-genai/package.json
+++ b/packages/google-genai/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/google-genai",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Google Gemini/GenAI adapter for CodeSpar — convert session tools to Gemini FunctionDeclaration format",
   "type": "module",
   "main": "./dist/index.js",
@@ -38,7 +38,7 @@
     "directory": "packages/google-genai"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/hermes/package.json b/packages/hermes/package.json
index b8a4f05..c8c896e 100644
--- a/packages/hermes/package.json
+++ b/packages/hermes/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/hermes",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Hermes Agent adapter for CodeSpar — convert session tools to Hermes MCP/plugin tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -39,7 +39,7 @@
     "directory": "packages/hermes"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/langchain/package.json b/packages/langchain/package.json
index ae095f0..c517aaf 100644
--- a/packages/langchain/package.json
+++ b/packages/langchain/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/langchain",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "LangChain.js adapter for CodeSpar — convert session tools to LangChain StructuredTool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -37,7 +37,7 @@
     "directory": "packages/langchain"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0",
+    "@codespar/sdk": "^0.10.0 || ^0.11.0",
     "zod": ">=3.0.0"
   },
   "devDependencies": {
diff --git a/packages/letta/package.json b/packages/letta/package.json
index 19d92ee..136c2ab 100644
--- a/packages/letta/package.json
+++ b/packages/letta/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/letta",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Letta (MemGPT) adapter for CodeSpar — convert session tools to Letta tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -37,7 +37,7 @@
     "directory": "packages/letta"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/llama-index/package.json b/packages/llama-index/package.json
index 3f27379..748b5ae 100644
--- a/packages/llama-index/package.json
+++ b/packages/llama-index/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/llama-index",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "LlamaIndex.TS adapter for CodeSpar — convert session tools to LlamaIndex FunctionTool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -38,7 +38,7 @@
     "directory": "packages/llama-index"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/mastra/package.json b/packages/mastra/package.json
index e392db5..d4a2d7e 100644
--- a/packages/mastra/package.json
+++ b/packages/mastra/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/mastra",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Mastra adapter for CodeSpar — convert session tools to Mastra tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -37,7 +37,7 @@
     "directory": "packages/mastra"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/mcp/package.json b/packages/mcp/package.json
index 65ec6cc..403e82a 100644
--- a/packages/mcp/package.json
+++ b/packages/mcp/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/mcp",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "description": "MCP server for CodeSpar — give Claude, Codex, Cursor & ChatGPT a commerce agent (pay, charge, wallet, mandates, Pomelo card) over MCP",
   "type": "module",
   "main": "./dist/index.js",
@@ -40,11 +40,11 @@
     "directory": "packages/mcp"
   },
   "dependencies": {
-    "@codespar/sdk": "^0.10.1",
+    "@codespar/sdk": "^0.10.1 || ^0.11.0",
     "@modelcontextprotocol/sdk": "^1.29.0"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.1"
+    "@codespar/sdk": "^0.10.1 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/openai/package.json b/packages/openai/package.json
index a830181..d3acaaa 100644
--- a/packages/openai/package.json
+++ b/packages/openai/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/openai",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "OpenAI Agents SDK adapter for CodeSpar — convert MCP tools to OpenAI function calling format",
   "type": "module",
   "main": "./dist/index.js",
@@ -36,7 +36,7 @@
     "directory": "packages/openai"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0"
+    "@codespar/sdk": "^0.10.0 || ^0.11.0"
   },
   "devDependencies": {
     "@codespar/sdk": "*",
diff --git a/packages/python/CHANGELOG.md b/packages/python/CHANGELOG.md
index 47230eb..6aac563 100644
--- a/packages/python/CHANGELOG.md
+++ b/packages/python/CHANGELOG.md
@@ -1,5 +1,22 @@
 # codespar (Python SDK) — CHANGELOG
 
+## 0.11.0
+
+Offline V3 mandate verification lands as the `codespar.mandate`
+submodule, in parity with `@codespar/sdk/mandate` and the CLI. See
+[codespar/codespar-core#114](https://github.com/codespar/codespar-core/pull/114).
+
+### Added
+
+- `codespar.mandate`: `decode_mandate_token` and
+  `reconstruct_signing_string` are pure stdlib; `verify_ed25519` and
+  `verify_mandate_token` verify the V3 dual Ed25519 signatures and
+  lazily import `cryptography`, raising a clear install hint when it is
+  absent. New optional extra: `pip install codespar[verify]`. The base
+  package keeps its single runtime dependency (httpx).
+- The canonical signing string is byte-locked against the platform's
+  frozen fixture, shared with the TS SDK and CLI tests.
+
 ## 0.10.0
 
 The hosted test-mode SDK surface lands across the `codespar` Python
diff --git a/packages/python/pyproject.toml b/packages/python/pyproject.toml
index b33f64e..7f97b5d 100644
--- a/packages/python/pyproject.toml
+++ b/packages/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "codespar"
-version = "0.10.2"
+version = "0.11.0"
 description = "Python SDK for CodeSpar — commerce infrastructure for AI agents in Latin America."
 readme = "README.md"
 requires-python = ">=3.10"
diff --git a/packages/vercel/package.json b/packages/vercel/package.json
index 6365496..a5307af 100644
--- a/packages/vercel/package.json
+++ b/packages/vercel/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@codespar/vercel",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Vercel AI SDK adapter for CodeSpar — convert MCP tools to Vercel AI tool format",
   "type": "module",
   "main": "./dist/index.js",
@@ -36,7 +36,7 @@
     "directory": "packages/vercel"
   },
   "peerDependencies": {
-    "@codespar/sdk": "^0.10.0",
+    "@codespar/sdk": "^0.10.0 || ^0.11.0",
     "ai": ">=3.0.0"
   },
   "devDependencies": {