Markdown: code blocks
Category: markdown
Renders fenced code blocks (```) with language hints — includes syntax highlighting where the client supports it.
Support by client
| Client | Status | Notes | Verified |
|---|---|---|---|
 Claude Web | supported | Fenced code block rendered with syntax highlighting: typescript language hint applied (interface Probe, async function callProbe, colored keywords like interface/function/const, red string literals, brackets). 'Here is a fenced code block with a language hint:' preceding line visible. | 2026-07-05T15:53:25.248Z |
| Claude Desktop | supported | Line 2: The response shows a fenced code block rendered as a distinct monospaced panel with syntax highlighting (colored keywords/strings), not plain text. | 2026-07-08T14:56:33.481Z |
| Claude Mobile | supported | Fenced block renders as monospaced code container with 'typescript' language label and copy button. Syntax highlighting not clearly discernible in dark theme screenshots. call id 2a9c8d. Automated via Mirroir. | 2026-07-09T14:29:48.679Z |
| Claude Voice | unknown | — | |
| Claude Code | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. | 2026-07-08T19:16:26.453Z |
 ChatGPT Web | supported | Fenced code block rendered as a monospaced syntax-highlighted TypeScript code block (language label 'TypeScript' visible in the block header). Call id: 7f29d9. | 2026-07-05T15:26:11.219Z |
| ChatGPT Mobile | unknown | — | |
| ChatGPT Voice | unknown | — | |
| ChatGPT Desktop | unknown | — | |
| Codex CLI | unknown | Tool was called but the model did not echo the probe's call-id; can't infer rendering. Prefer vision-tier for a definitive answer. | 2026-07-02T17:49:38.105Z |
 Siri | unknown | — | |
| Apple AI (ChatGPT) | unknown | — | |
 Gemini Web | unknown | — | |
| Gemini Mobile | unknown | — | |
| Gemini Voice | unknown | — | |
| Gemini CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. | 2026-07-08T15:42:42.117Z |
 Antigravity | unknown | — | |
 Cursor | unknown | — | |
| Cursor CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. | 2026-07-04T14:45:01.410Z |
 VS Code (Copilot Chat) | unknown | — | |
 GitHub Copilot CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. | 2026-07-04T14:55:25.482Z |
 Windsurf | unknown | — | |
 Zed | unknown | — | |
 Perplexity Web | unknown | — | |
| Perplexity Mobile | unknown | — | |
| Perplexity Voice | unknown | — | |
| Comet Browser | unknown | — | |
 Grok Web | unknown | — | |
| Grok Mobile | unknown | — | |
| Grok Voice | unknown | — | |
| Grok CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. (tool_use event and debug log both missed; inferred toolCalled from call-id echo) | 2026-07-02T18:10:33.845Z |
 Warp | unknown | — | |
 Amp | unknown | — | |
 Goose CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. (stream event did not name the tool; inferred toolCalled from call-id echo) | 2026-07-04T14:53:28.477Z |
| Antigravity CLI | partial | Tool was called and the model echoed the probe's call-id — but behavioral can't tell whether the client actually rendered the markdown variant (table/code/math/diagram/image/task/URL) vs. surfaced the source. Prefer vision-tier for a definitive answer. (tool name not in reply; inferred toolCalled from call-id echo) | 2026-07-04T14:53:51.034Z |
 JetBrains AI Assistant | unknown | — | |
 Ollama | unknown | — | |
 LM Studio | unknown | — |