# Iridium, $20 monthly: LinkedIn post search API

> Search LinkedIn posts by topic and return each post with its author as a candidate.

Iridium's Solo plan lets you call the LinkedIn post search API. We check each provider's docs for 7 fields. Iridium's docs list 3: Text, Engagement, Author.
You pay $20 a month. Iridium limits how many results you get but gives no number.
We haven't run Iridium through [our LinkedIn post search API benchmark](https://datacircle.dev/best-linkedin-post-search-api.txt) yet.
This plan costs $20 a month. We rank 139 plans for LinkedIn post search APIs by price. Half the plans cost $0.167 or less per 1,000 posts.
[Coresignal's $49 monthly plan](https://datacircle.dev/linkedin-post-search-apis/coresignal/49-monthly-mini-post-v2-employee-post-search-es-dsl/llms.txt) is the cheapest paid plan per 1,000 posts. Coresignal's $49 monthly plan charges nothing per call. You get as many posts as Coresignal's rate limit allows. [AnyAPI's pay-as-you-go plan](https://datacircle.dev/linkedin-post-search-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-linkedin-search-posts-full/llms.txt) costs the least for 10,000 posts a month: $0.40.
[Mentionkit's $49 monthly plan](https://datacircle.dev/linkedin-post-search-apis/mentionkit/49-monthly/llms.txt) covers any number of posts. Mentionkit's $49 monthly plan costs as much up front as Coresignal's $49 monthly plan.
[Scrappa](https://datacircle.dev/linkedin-post-search-apis/scrappa/10-pack/llms.txt), [ScrapeField](https://datacircle.dev/linkedin-post-search-apis/scrapefield/149-pack/llms.txt) and [Up2Data](https://datacircle.dev/linkedin-post-search-apis/up2data/25-pack-10k-post-v1-search-posts/llms.txt) are the best LinkedIn post search API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/linkedin-post-search-apis/iridium/20-monthly
- [LinkedIn post search API: the best of 20+ providers compared](https://datacircle.dev/best-linkedin-post-search-api.txt)
- Get it: https://iridiumhqmcp.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- Request: `POST https://api.iridiumhqmcp.com/mcp/tools/search_posts_by_topic`
- API key: with the plan, on https://iridiumhqmcp.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- Its API docs: https://api.iridiumhqmcp.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- Sold by: Iridium (https://iridiumhqmcp.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 43%
- Text: ✓
- Engagement: ✓
- Author: ✓

## Price

- Per: result
- Billing: monthly
- $ a month: $20

## Aggregators

- Aggregators: none

## Charges

- Most per search: 50
- Also pays for: 63 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Search LinkedIn posts by topic and return each post with its author as a candidate.

## Data

- Freshness: live
- Searches in: LinkedIn's search
- Keep data: no limit
- Use data: You agree not to use the Service to: Send identical or substantially similar templated messages at volume, or use sequences to evade personalization, Circumvent, disable, or attempt to raise rate limits, caps, or pacing controls, Engage in harassment, spam, or unsolicited commercial bulk messaging, or messaging in violation of CAN-SPAM, GDPR, PECR, or applicable anti-spam law, Scrape, harvest, resell, or export profile data obtained through the Service, Conduct recruiting fraud, phishing, impersonation, MLM, or crypto/investment solicitation, Upload credentials belonging to another person, or operate an account you do not own, Reverse engineer the Service, or use it to build a competing product, Engage in any use that violates LinkedIn's User Agreement or any applicable law.

## Plan

- Pay: $20

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: keywords. Optional: author_company, author_keywords, date_posted, posted_by, limit
- Method: POST
- Path: /mcp/tools/search_posts_by_topic

## About the plan

- Plan: Solo
- Who can get it: anyone 18 or older, for a LinkedIn account they own and are authorized to use

## The 11 fields the plan's answer can hold

text, date, post URL, reaction count, comment count, author name, author headline, author type, author ID, count, has more

## Iridium's plans (1)

- [Iridium, $20 monthly](https://datacircle.dev/linkedin-post-search-apis/iridium/20-monthly/llms.txt): 43% complete, live

## Iridium's calls for this API (1)

- `POST /mcp/tools/search_posts_by_topic`: [Iridium, $20 monthly](https://datacircle.dev/linkedin-post-search-apis/iridium/20-monthly/llms.txt)

## Iridium's APIs (3)

- [Iridium: LinkedIn profile API pricing, 1 plan](https://datacircle.dev/linkedin-profile-apis/iridium/20-monthly/llms.txt)
- [Iridium: LinkedIn post search API pricing, 1 plan](https://datacircle.dev/linkedin-post-search-apis/iridium/20-monthly/llms.txt)
- [Iridium: LinkedIn people search API pricing, 1 plan, POST /mcp/tools/find_person](https://datacircle.dev/linkedin-people-search-apis/iridium/20-monthly-solo-post-mcp-tools-find-person/llms.txt)
- [Iridium: LinkedIn people search API pricing, 1 plan, POST /mcp/tools/find_prospects](https://datacircle.dev/linkedin-people-search-apis/iridium/20-monthly-solo-post-mcp-tools-find-prospects/llms.txt)
- [Iridium: LinkedIn people search API pricing, 1 plan, POST /mcp/tools/search_prospects](https://datacircle.dev/linkedin-people-search-apis/iridium/20-monthly-solo-post-mcp-tools-search-prospects/llms.txt)

## Iridium: LinkedIn post search API alternatives

- [Datamagnet, $39 monthly](https://datacircle.dev/linkedin-post-search-apis/datamagnet/39-monthly/llms.txt): 71% complete, live
- [Social Fetch, $29 monthly](https://datacircle.dev/linkedin-post-search-apis/social-fetch/29-monthly/llms.txt): 71% complete, live
- [Linked API, $69 monthly](https://datacircle.dev/linkedin-post-search-apis/linked-api/69-monthly/llms.txt): no limit, 71% complete, live
- [Reach MCP, $20 monthly](https://datacircle.dev/linkedin-post-search-apis/reach-mcp/20-monthly/llms.txt): 43% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://api.iridiumhqmcp.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- https://iridiumhqmcp.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- https://iridiumhqmcp.com/faq?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- https://iridiumhqmcp.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- https://iridiumhqmcp.com/security-and-data?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing
- https://iridiumhqmcp.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=linkedin-post-search-api-pricing