feat: add get_post tool with image download support

[Czhang0727]

Summary

• Adds a new get_post tool that navigates to a specific LinkedIn post URL and extracts its full content
• Downloads any attached images (diagrams, charts, photos) to a temp directory and returns local file paths
• Filters out small images (< 100px) to skip icons and avatars

Problem

get_person_profile(sections="posts") returns post images as "Activate to view larger image" placeholders. There's no way to access visual content (diagrams, screenshots, charts) from posts without resorting to browser automation outside the MCP.

Solution

```python
result = get_post("https://www.linkedin.com/feed/update/urn:li:activity:123/")

result["sections"]["post"] → full post text

result["images"] → [{"path": "/tmp/linkedin_post_imgs_xxx/image_1.png", "index": 1}, ...]

```

The `download_images=True` parameter (default) triggers image capture using Playwright's element screenshot API — same browser session, no extra auth needed.

Test plan

• Tool registers correctly alongside existing 17 tools (verified with asyncio.run)
• Live integration test: 14,784 chars extracted, 5 images saved from a real LinkedIn post
• Small images (icons/avatars < 100px) correctly filtered out
• `download_images=False` skips image capture for text-only use cases

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR adds a new tool for scraping individual LinkedIn posts. The main changes are:

• Registers a get_post tool alongside the existing MCP tools.
• Validates LinkedIn post URLs before navigation.
• Extracts post text and tries to expand inline “see more” content.
• Downloads attached post images to a temporary directory with size filtering and a capture cap.
• Returns post sections, image paths, references, and extraction errors.

Confidence Score: 3/5

This should be fixed before merging.

• Truncated LinkedIn posts can still return shortened text because the expansion selector can click the container instead of the button.
• Image capture can still include media from another update card on the same permalink page.
• Both issues affect the core output promised by the new tool.

linkedin_mcp_server/tools/post.py

Important Files Changed

Filename	Overview
linkedin_mcp_server/tools/post.py	Adds the get_post implementation, including URL validation, post expansion, reference preservation, and post image capture.

Prompt To Fix All With AI

Fix the following 2 code review issues. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 2
linkedin_mcp_server/tools/post.py:184-188
**Fix scoped expansion**

`post_container_sel` is a comma-separated selector list, and interpolating it before the button selector makes the first alternatives match the container itself: `article.feed-shared-update-v2` and `.scaffold-layout__main .feed-shared-update-v2`. Because `.first` can select the post container instead of the “see more” button, this click can fail or do nothing and the broad `except` leaves `sections["post"]` truncated. A post with hidden text behind LinkedIn’s inline “see more” control can still return the shortened body.

```suggestion
                see_more = page.locator(
                    "article.feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    ".scaffold-layout__main .feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    "main > div > div button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    "article.feed-shared-update-v2 button[aria-label*='see more'], "
                    ".scaffold-layout__main .feed-shared-update-v2 button[aria-label*='see more'], "
                    "main > div > div button[aria-label*='see more'], "
                    "article.feed-shared-update-v2 .feed-shared-text .see-more, "
                    ".scaffold-layout__main .feed-shared-update-v2 .feed-shared-text .see-more, "
                    "main > div > div .feed-shared-text .see-more"
                ).first
```

### Issue 2 of 2
linkedin_mcp_server/tools/post.py:41-48
**Bind media to post**

These selectors are scoped to any `article.feed-shared-update-v2` on the page, not to the single primary post that was requested. If a permalink page contains another update card in recommendations, related feed content, an ad, or a repost preview, `page.locator(selector)` can still collect images from that other article and return them as attachments for `post_url`. The image lookup needs to first resolve the primary post container, then query media inside only that container.

_{Reviews (3): Last reviewed commit: "fix: scope text expansion and image sele..." | Re-trigger Greptile}

[greptile-apps]

Fix scoped expansion

post_container_sel is a comma-separated selector list, and interpolating it before the button selector makes the first alternatives match the container itself: article.feed-shared-update-v2 and .scaffold-layout__main .feed-shared-update-v2. Because .first can select the post container instead of the “see more” button, this click can fail or do nothing and the broad except leaves sections["post"] truncated. A post with hidden text behind LinkedIn’s inline “see more” control can still return the shortened body.

Suggested change

	see_more = page.locator(
	f"{post_container_sel} button.feed-shared-inline-show-more-text__see-more-less-toggle, "
	f"{post_container_sel} button[aria-label*='see more'], "
	f"{post_container_sel} .feed-shared-text .see-more"
	).first
	see_more = page.locator(
	"article.feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
	".scaffold-layout__main .feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
	"main > div > div button.feed-shared-inline-show-more-text__see-more-less-toggle, "
	"article.feed-shared-update-v2 button[aria-label*='see more'], "
	".scaffold-layout__main .feed-shared-update-v2 button[aria-label*='see more'], "
	"main > div > div button[aria-label*='see more'], "
	"article.feed-shared-update-v2 .feed-shared-text .see-more, "
	".scaffold-layout__main .feed-shared-update-v2 .feed-shared-text .see-more, "
	"main > div > div .feed-shared-text .see-more"
	).first

Prompt To Fix With AI

This is a comment left during a code review.
Path: linkedin_mcp_server/tools/post.py
Line: 184-188

Comment:
**Fix scoped expansion**

`post_container_sel` is a comma-separated selector list, and interpolating it before the button selector makes the first alternatives match the container itself: `article.feed-shared-update-v2` and `.scaffold-layout__main .feed-shared-update-v2`. Because `.first` can select the post container instead of the “see more” button, this click can fail or do nothing and the broad `except` leaves `sections["post"]` truncated. A post with hidden text behind LinkedIn’s inline “see more” control can still return the shortened body.

```suggestion
                see_more = page.locator(
                    "article.feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    ".scaffold-layout__main .feed-shared-update-v2 button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    "main > div > div button.feed-shared-inline-show-more-text__see-more-less-toggle, "
                    "article.feed-shared-update-v2 button[aria-label*='see more'], "
                    ".scaffold-layout__main .feed-shared-update-v2 button[aria-label*='see more'], "
                    "main > div > div button[aria-label*='see more'], "
                    "article.feed-shared-update-v2 .feed-shared-text .see-more, "
                    ".scaffold-layout__main .feed-shared-update-v2 .feed-shared-text .see-more, "
                    "main > div > div .feed-shared-text .see-more"
                ).first
```

How can I resolve this? If you propose a fix, please make it concise.

[greptile-apps]

Bind media to post

These selectors are scoped to any article.feed-shared-update-v2 on the page, not to the single primary post that was requested. If a permalink page contains another update card in recommendations, related feed content, an ad, or a repost preview, page.locator(selector) can still collect images from that other article and return them as attachments for post_url. The image lookup needs to first resolve the primary post container, then query media inside only that container.

Prompt To Fix With AI

This is a comment left during a code review.
Path: linkedin_mcp_server/tools/post.py
Line: 41-48

Comment:
**Bind media to post**

These selectors are scoped to any `article.feed-shared-update-v2` on the page, not to the single primary post that was requested. If a permalink page contains another update card in recommendations, related feed content, an ad, or a repost preview, `page.locator(selector)` can still collect images from that other article and return them as attachments for `post_url`. The image lookup needs to first resolve the primary post container, then query media inside only that container.

How can I resolve this? If you propose a fix, please make it concise.