Tools

Reddit tools

Posts, comments and communities: search across Reddit, or watch what appears in a subreddit.

Read what people say on Reddit: posts, comments and the communities they are in. Search on Reddit is ranked and never complete, so it is good for finding examples, not for counting. reddit_get_new_posts is different: it returns everything posted in a window, says how much of the window it covered, and is never cached.

To listen to a topic over time, find communities with reddit_search_subreddits and read their rules with reddit_get_subreddit, then make a monitor: it reads every new post in them, or searches your keywords, on a schedule, and reports only new posts. To run the check yourself instead, call reddit_get_new_posts with your match terms, send next_since back as since on the next call, and drop posts you have already seen by their id.

For a step-by-step look at Reddit research methods, see how to search Reddit and find subreddits with Claude or ChatGPT. For what a Reddit monitor watches and costs, see Reddit monitoring, and for the methods, how to monitor Reddit for brand mentions. To connect the tools in Claude, ChatGPT or Cursor, and to compare hosted and self-hosted Reddit MCP servers, see the Reddit MCP setup guide.

To connect these tools to your agent, see the Reddit MCP page.

ToolWhat it doesCost
reddit_search_postsSearch Reddit postsFrom 1 credit
reddit_search_commentsSearch Reddit commentsFrom 1 credit
reddit_get_new_postsGet new posts in subredditsFrom 1 credit
reddit_get_postGet a Reddit postFrom 1 credit
reddit_get_commentsGet a thread's commentsFrom 1 credit
reddit_search_subredditsFind subreddits for a topicFrom 1 credit
reddit_get_subredditGet a subredditFrom 1 credit

Search Reddit posts

Toolreddit_search_posts

Reddit posts matching a query, ranked by the search, across all of Reddit or inside one community.

Good for

"what do people on Reddit say about X", "find threads complaining about Y", "who is asking for a tool like ours".

Not the tool for
What you get

A list, ranked, not exhaustive. Each row has id, subreddit, title, author, created_at, score, comments, upvote_ratio, url, link_url, body (cut at 2000 characters), flair, over_18, is_video.

Cost

1 credit per call, up to about 25 posts; nothing on NoData. Cached 1 hour.

Parameters

ParameterDefault and notes
queryRequired.
subredditSearch one community instead of all of Reddit.
sortOne of relevance, new, top, comment_count. Ranking of the results. Default relevance.
time_rangeOne of all, day, week, month, year. How far back to search. Default all.

It also takes the common parameters cursor, max_credits and dry_run.

Example input
{
  "query": "hubspot alternative",
  "sort": "new",
  "time_range": "month"
}

Search Reddit comments

Toolreddit_search_comments

Reddit comments matching a query, ranked by the search, across all of Reddit or inside one community.

Good for

"what do people reply when someone asks about X", "find recommendations of a competitor inside threads", mining opinions rather than thread titles.

Not the tool for
What you get

A list, ranked, not exhaustive. Each row has id, post_id, post_title, parent_id (the comment it answers, null at top level), subreddit, author, created_at, score, body (cut at 2000 characters), url, depth (0 at top level, null for a reply, whose depth search does not say).

Cost

1 credit per call, one page. Cached 1 hour.

Parameters

ParameterDefault and notes
queryRequired.
subredditSearch one community instead of all of Reddit.
sortOne of relevance, new, top, comment_count. Ranking of the results. Default relevance.
time_rangeOne of all, day, week, month, year. How far back to search. Default all. The vendor ignores it for comments, so the page is filtered by created_at, and a narrow window can come back short or NoData.

It also takes the common parameters cursor, max_credits and dry_run.

Example input
{
  "query": "best crm for a two person team",
  "time_range": "year"
}

Get new posts in subreddits

Toolreddit_get_new_posts

Every post created in the given subreddits inside a time window, oldest first. The check-in tool: complete for the window it reports, unlike search.

Good for

"anything new in r/startups since yesterday", "watch these subreddits for mentions of our category", any repeated look at the same communities.

Not the tool for
What you get

A list, oldest first. Each row has id, subreddit, title, author, created_at, score, comments, upvote_ratio, url, link_url, body, flair, over_18, is_video. coverage[] per subreddit: covered_from, complete, pages_fetched. covered_from later than since, or complete false, means the window was cut: raise pages, shorten since, or pass meta.cursor. next_since is the value to send as since next time; it overlaps by two minutes, so dedupe rows on id. A subreddit that fails (a typo, a private community) is listed in errors[] and the others still answer.

Cost

1 credit per subreddit per page. Three subreddits at the default is 3 credits. Never cached.

Parameters

ParameterDefault and notes
subreddits[]Required. Communities to check, up to 10. One credit each, per page.
sinceDefault 24h. How far back to look: "30m", "6h", "2d" or an ISO 8601 timestamp. Max 7 days.
pagesDefault 1. Pages per subreddit. Raise it when the window comes back cut. At most 3.
match[]Keep only posts whose title or body holds one of these terms, ignoring case. At most 10.

It also takes the common parameters cursor, max_credits and dry_run.

Example input
{
  "subreddits": [
    "startups",
    "SaaS"
  ],
  "since": "24h",
  "match": [
    "crm",
    "pipeline"
  ]
}

Get a Reddit post

Toolreddit_get_post

One Reddit thread in full: the whole post body, its score, its flair and how big the community is.

Good for

A row from a search or a check-in is worth reading properly, or you need the full text a row cut at 2000 characters.

Not the tool for
What you get

One record with id, subreddit, title, author, created_at, score, comments, upvote_ratio, url, link_url, body (full), flair, over_18, is_video, locked, archived.

Cost

1 credit. Cached 1 hour.

Parameters

ParameterDefault and notes
urlRequired. The thread URL, from a row's url.

It also takes the common parameters max_credits and dry_run.

Example input
{
  "url": "https://www.reddit.com/r/startups/comments/1lfbo7u/what_crm_do_you_use/"
}

Get a thread's comments

Toolreddit_get_comments

The comments on one Reddit thread, flattened in reading order with their reply depth.

Good for

"what did people reply", judging whether a thread is worth answering, pulling the objections out of a discussion.

Not the tool for
What you get

A list, in reading order: a reply follows the comment it answers. Each row has id, post_id, post_title, parent_id (the comment it answers, null at top level), subreddit, author, created_at, score, body (cut at 2000 characters), url, depth (0 is top level). meta.cursor loads more of the thread.

Cost

1 credit per call, one page of the thread. Cached 1 hour.

Parameters

ParameterDefault and notes
urlRequired. The thread URL, from a row's url.

It also takes the common parameters cursor, max_credits and dry_run.

Example input
{
  "url": "https://www.reddit.com/r/startups/comments/1lfbo7u/what_crm_do_you_use/"
}

Find subreddits for a topic

Toolreddit_search_subreddits

The communities that discuss a topic, counted from one page of search results.

Good for

"which subreddits talk about X", picking the communities to pass to reddit_get_new_posts, sizing where a conversation happens.

Not the tool for
  • A full directory of subreddits about a topic (this counts a sample of posts, so a quiet community can be missing).
  • One community's rules and size, use reddit_get_subreddit.
  • The posts themselves, use reddit_search_posts.
What you get

A list, most posts in the sample first. Each row has name, url, posts_in_sample, example_post_url. Search carries no community size; reddit_get_subreddit gives weekly visitors.

Cost

1 credit. Cached 1 hour.

Parameters

ParameterDefault and notes
queryRequired.
time_rangeOne of all, day, week, month, year. How far back to search. Default all.

It also takes the common parameters max_credits and dry_run.

Example input
{
  "query": "cold email deliverability",
  "time_range": "year"
}

Get a subreddit

Toolreddit_get_subreddit

One community: how big it is, how busy it is, and the rules it posts, as the moderators wrote them.

Good for

Before you post or reply anywhere, to read the rules on self promotion; sizing a community found by reddit_search_subreddits.

Not the tool for
What you get

One record with name, url, weekly_active_users (visitors in a week, Reddit's measure of size; it publishes no member count), weekly_contributions (posts and comments in a week), description, rules (the text as written; read it, it is not parsed into flags), submit_text, created_at.

Cost

1 credit. Cached 7 days.

Parameters

ParameterDefault and notes
subredditRequired. The community name, such as "startups"; an r/ prefix is dropped.

It also takes the common parameters max_credits and dry_run.

Example input
{
  "subreddit": "SaaS"
}