diff --git a/manifest.json b/manifest.json
index 7c7907b..48ad504 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": "0.2",
   "name": "massive-mcp",
   "display_name": "Massive Web Render",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "Real-time web access for AI agents — fetch URLs, search Google, query AI chatbots.",
   "long_description": "Official MCP server for the Massive Web Render API.\n\nFour tools: web_fetch (any URL → Markdown/HTML, with JS rendering, captchas, and geo-targeting), web_search (parsed Google SERP with AI overview + people-also-asked), ai_chat_completion (ChatGPT/Gemini/Perplexity/Copilot answers with structured sources), account_status (credits remaining).\n\nThree reference resources surface inside MCP clients (Connectors panel / @-menu): docs://massive/pricing, docs://massive/geotargeting, docs://massive/changelog. Four starter prompts ship out of the box.\n\nPay-as-you-go pricing — see https://joinmassive.com/pricing. MIT-licensed; source at https://github.com/joinmassive/mcp-server. Compatible with Claude Desktop, Claude Code, Cursor, Continue, Cody, Windsurf, and any MCP-compatible client.",
   "author": { "name": "Massive Computing, Inc.", "url": "https://joinmassive.com" },
diff --git a/package.json b/package.json
index 3b1d813..ddd4ba7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@joinmassive/mcp-server",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "Official MCP server for the Massive Web Render API. Real-time web access for AI agents — fetch any URL, search Google, query AI chatbots — with JS rendering, captcha solving, and 195+ country geo-targeting.",
   "license": "MIT",
   "type": "module",
diff --git a/src/resources/changelog.md b/src/resources/changelog.md
index e39e303..ee44906 100644
--- a/src/resources/changelog.md
+++ b/src/resources/changelog.md
@@ -1,25 +1,40 @@
 # Changelog
 
+## v0.2.1 (2026-05-05)
+
+Polish on top of v0.2.0 — visual fixes for Claude Desktop and a runtime API migration. No new tool capabilities.
+
+### Added
+- **Per-tool icons** in `tools/list` responses (48×48 inlined as `data:image/png;base64,…`). Clients render the Massive logo as the per-tool badge instead of a generic "M" placeholder.
+
+### Changed
+- **Explicit tool titles** via `server.registerTool(...)` migration. Fixes Claude Desktop's auto-titlecase rendering of `ai_chat_completion` as "Ai chat completion" — now shows "AI chat completion". Other tools also get explicit titles ("Web fetch", "Web search", "Account status").
+- **Square 512×512 connector icon** replaces the previous letterboxed 343×189 image. Renders correctly in connector listings.
+
 ## v0.2.0 (2026-05-04)
 
 ### Added
-- New tool params:
+- **New tool params** (additive, backward-compatible):
   - `web_fetch`: `expiration`, `difficulty`, `subdivision`
   - `web_search`: `expiration`, `language`, `display`, `subdivision`
   - `ai_chat_completion`: `expiration`, `language`, `display`, `device`, `subdivision`
-- MCP resources for in-client reference: `docs://massive/pricing`, `docs://massive/geotargeting`, `docs://massive/changelog`.
-- MCPB starter prompts: `web_search_full`, `web_fetch_markdown`, `ai_chat_full`, `account_check`.
-- README sections: "Pricing & cost control", "Resources".
+- **MCP resources** for in-client reference: `docs://massive/pricing`, `docs://massive/geotargeting`, `docs://massive/changelog`.
+- **MCPB starter prompts**: `web_search_full`, `web_fetch_markdown`, `ai_chat_full`, `account_check`. Registered both at the manifest level (DXT discovery) and at the MCP server level via `server.prompt(...)` (runtime).
+- **README sections**: "Pricing & cost control", "Resources", and updated arg tables for each tool.
 
 ### Changed
 - Tool descriptions now enumerate cost-affecting params explicitly (model can be cost-conscious).
-- Manifest `description` and `long_description` clarified.
+- Manifest `description` and `long_description` clarified; `tools[]` descriptions sync with new params.
+- `language`/`display` description: accepts common name, two-letter ISO 639-1 (e.g. `"es"`), or Google code, case-insensitive. (Massive's API rejects ISO 639-2 codes like `"spa"` with HTTP 422.)
+- `toolError` now propagates the upstream response body (truncated to 1024 chars + truncation marker) into both the text content and `structuredContent.body`. Lets the model self-correct on 4xx errors. Reverses the v0.1 "suppress upstream body" defense-in-depth choice.
+
+### Fixed
+- DXT manifest `prompts[]` schema: `arguments` is `string[]` (just arg names) and template variables use `${arguments.X}` syntax.
 
 ### Deferred
 - Async / `mode=async` polling.
 - Sticky `session` cookie.
 - Search pagination (`serps`/`size`/`offset`).
-- New square icon (current icon autoscales fine in Claude Desktop).
 
 ## v0.1.0 (2026-05-01)