RecurPost Bluesky Post Generator
Free AI Tool for Bluesky-Ready Post Text
RecurPost’s Free Bluesky Post Generator removes the manual post writing step that consumes hours of agencies and freelancers. It’s the AI tool that converts a topic description and a selected tone into Bluesky-ready post text at no cost.
You describe the business or service, select the tone, generate the caption, and copy the result. The generator checks each draft for length, readability, and audience engagement potential before returning it. It also follows AT Protocol formatting conventions, so the output reads as native Bluesky content rather than repurposed X copy.
The returned draft remains fully editable. You revise the text, then paste it into any publishing workflow or schedule it to client Bluesky profiles inside RecurPost. The same generator covers 8 additional platforms, including Facebook, Instagram, LinkedIn, TikTok, and Pinterest. Agencies managing multi-platform calendars therefore produce first drafts for every client account from one location.
See what the Bluesky post generator does with your topic, tone, and intent inputs. Learn the four constraints a Bluesky-ready post must follow, including the 300-grapheme limit and rich-text markup. Get the 4 steps to generate a post, and find out how generated text reaches Bluesky as a scheduled post with its formatting intact.
Bluesky Post Generator
The Bluesky Limits a Generated Post Has to Fit
Bluesky enforces its limits at the protocol level and rejects anything longer. These are the numbers a generated post operates under:
Rule
Limit
What it means
Post text
300 graphemes
The 300-character limit counts graphemes rather than code points, so one emoji counts as a single character even when several code points construct it. Links, mentions, and hashtags all count toward the same 300.
Raw text
3,000 bytes
A separate cap on raw text. Only emoji-heavy posts reach this threshold first.
Links
Full URL length
Bluesky never shortens URLs, so a full web address consumes characters one for one. A UTM-tagged campaign link commonly spans 90 to 130 characters, which claims one-third to nearly half of the post.
Mentions
Complete handle
A mention counts its complete handle, including the .bsky.social suffix.
Media
4 images or 1 video
A Bluesky post carries up to 4 images at roughly 2 MB each, or one MP4 video, never both. Images stay outside the 300-character count entirely.
Alt text
2,000 characters
Each image accepts up to 2,000 characters of alt text, while a video description accepts 1,000. Bluesky provides no edit button, so a missing description requires deleting and republishing the post.
Clickability depends on markup rather than on the text itself. The AT Protocol never scans a post for @handles, #tags, or URLs. The publishing tool computes the exact position of each element and transmits it alongside the post. Every mention, hashtag, and link otherwise arrives as plain characters that nobody can click. A pasted mention accordingly notifies nobody, and a pasted link opens nothing.
What Makes a Post Bluesky-Ready
A Bluesky-ready post must follow these four constraints:
4 CONSTRAINTS
A 300-grapheme text limit
Rich-text markup for mentions, hashtags, and links
A single media type per post
Alt text on every image
CHECKS AFTER THE FINAL EDIT
Recount the characters after editing, because additions push a compliant draft past the 300-grapheme limit
Attach any link as a card, then delete the URL text from the body to reclaim those characters
Add alt text to every image, because Bluesky provides no edit button for corrections after publication
Confirm that mentions and hashtags carry rich-text markup, since the AT Protocol does not detect them independently
The Bluesky Post Generator Converts Topic, Tone, and Intent into Finished Post Text
The Bluesky post generator converts three inputs, such as topic, tone, and intent behind the post, into finished post text. RecurPost’s tool analyzes those inputs against Bluesky trends and user behavior before producing the draft. You describe the business or service, select the tone, generate the caption, and copy the output. The sequence runs in 4 steps and carries no cost or setup fee. What sets the output apart:
Platform-native output
The generator applies Bluesky's own formatting and hashtag placement instead of conventions carried over from X or LinkedIn.
AT Protocol standards
The generator supports AT Protocol standards, which keeps every draft technically compatible with the network.
Automatic checks
Each generated post passes automatic checks for length, readability, and audience engagement potential.
Community-fit tone
The tone adapts to the expectations of decentralized communities rather than mainstream network norms.
The generator screens each draft for length during creation, and RecurPost’s composer enforces the hard ceiling at scheduling. Bluesky measures its 300-character limit in graphemes and rejects anything longer at the protocol level. The composer counts those graphemes as you write, so an oversized draft never reaches the publishing queue.
The generator produces text alone. It does not resize images, write alt text, or build link preview cards. RecurPost’s composer handles those three tasks at scheduling time instead: it resizes every image under Bluesky’s upload cap, attaches alt text to as many as 4 images per post, and constructs link cards from the destination page’s title, description, and thumbnail image. Rich-text markers for mentions, hashtags, and links are computed at the same stage, because the AT Protocol publishes them as plain characters otherwise.
The same engine powers post generators for 8 additional networks: Facebook, Instagram, X, LinkedIn, TikTok, Pinterest, YouTube, and Google Business Profile. Agencies running multi-network calendars draft platform-specific copy from a single AI Social Media Posts Generator.
Bluesky Post Generator
From Generated Text to a Scheduled Bluesky Post
Generated text reaches Bluesky intact only when the publishing tool supplies the markup, media handling, and character validation that the AT Protocol requires. RecurPost’s Bluesky Scheduler performs those tasks between the draft and the published post.
Certain Bluesky features remain unavailable to every scheduler. Reply chains, quote posts, and GIFs stay inside the Bluesky app, because the protocol does not open them to publishing tools yet. Replies and direct messages also remain in Bluesky itself, since RecurPost’s role covers publishing and reporting.
Raw text pasted manually into the Bluesky app requires nothing beyond the free generator. That route transfers every task described above back to the person publishing, including the character count and the alt text.
Client presence on Bluesky extends past post text in most engagements. Hashtag sets and profile bios need the same platform-specific handling, which RecurPost’s Free AI Tools address alongside the post generator.
What RecurPost's Composer Does Between the Draft and the Published Post
The composer counts graphemes as you write, using the same measurement Bluesky applies at the protocol level. RecurPost also computes the position of every mention, hashtag, and link, then transmits those markers alongside the post.
Clickable mentions and links
Each mention resolves to the real account behind the handle, so the tag notifies the correct person. Links publish as working links, including bare domains typed without the https prefix.
Media handling
RecurPost resizes every image under Bluesky's upload cap before sending it. Alt text is written in the composer and travels with each of the four permitted images. A link publishes as a genuine Bluesky card carrying the destination page's title, description, and thumbnail image. Video files that are not already MP4 are converted first, then normalized under Bluesky's size ceiling.
Best-time suggestions
Best-time suggestions are scored from each connected account's own recent posts, weighing quotes, reposts, replies, and likes in that account's time zone.
Plain-language failures
Publishing failures are matched against a catalog of 850+ documented platform errors, of which 11 are Bluesky-specific rejections. RecurPost translates each rejection into plain language rather than leaving the post to fail silently in the queue.
How to Generate a Bluesky Post in 4 Steps
Generating a Bluesky post requires describing the subject, selecting the tone, generating the caption, and copying the result. The generator analyzes topic, tone, and intent together, then references Bluesky trends and user behavior before producing the draft.
Describe the Subject and the Intent
Specific input produces a sharper draft than a broad category label. Name the business, the offer or announcement, and the response the post should prompt. The generator treats intent as an input separate from topic, so stating the objective changes the output directly. Vague descriptions produce generic copy, which then costs more editing time than a precise brief would have required.
Select the Tone
Tone selection establishes the client voice before generation rather than after it. The generator writes in a style suited to how people actually talk on Bluesky, instead of copying the conventions of other networks. Agencies manage several accounts and change the tone between drafts instead of rewriting the brief for each client.
Generate and Review the Draft
Review every generated draft against the client brief before accepting it. The generator handles structure and length, while the client's specifics remain your responsibility. Each draft passes automatic checks for length, readability, and audience engagement potential during generation. Those checks confirm format compliance rather than factual accuracy about a current campaign.
Edit and Copy the Text
Edit the draft, then copy the text into your scheduler or the Bluesky app. Recount the characters after editing, because additions push a compliant draft past the 300-grapheme limit. RecurPost's composer counts those graphemes as you write, so any overflow surfaces before scheduling rather than after publication.
Try RecurPost
RecurPost’s Agency plan covers 20 social accounts for $79 per month with no per-user seat charge. Extra accounts cost $4 each, so a 24-account roster runs $95 per month. Bluesky publishing is included on every plan. RecurPost is social media management software built for agencies and freelancers who run client accounts, and the free generator above is one door into it.
See RecurPost pricing for every plan and add-on, or start a 14-day free trial with no credit card.
Bluesky Post Generator FAQs
Is the Bluesky post generator free?
RecurPost’s Bluesky post generator is free and requires no account to generate a post. Generating, editing, and copying the text costs nothing. Scheduling the output to connected client accounts happens inside RecurPost, and every RecurPost plan includes Bluesky publishing.
Does the generated post fit Bluesky's 300-character limit?
The generator writes toward Bluesky’s 300-character limit instead of truncating a longer draft. Bluesky counts graphemes, so one emoji counts as one character. Your edits can push a draft back over the line, which is why RecurPost’s composer counts the same way Bluesky does.
Do hashtags and links count toward the 300 characters?
Hashtags and links count toward Bluesky’s 300 characters. Bluesky does not shorten URLs, so a 70-character link spends 70 characters. Hashtags count like any other text. Budget the link first and write the post around what remains.
Can I schedule the generated post to Bluesky directly?
A generated post schedules to Bluesky through RecurPost. Paste the draft into the composer and pick the client accounts. Set the time yourself or take a best-time suggestion. Mentions, hashtags, and links are clickable, and RecurPost builds the link preview card at publish time.
Does the generator write posts that sound native to Bluesky?
The generator’s Bluesky pass writes for Bluesky’s conversational register instead of recycling X-style marketing copy. Bluesky’s communities are quick to call out cross-posted corporate text. The draft gives you platform-correct structure. Your edit adds the client’s voice, and that combination reads native.