Free BlueSky tools from ONYX
Use these tools to generate prompts, write posts, split threads, build reply pointers, count characters, clean formatting, inspect JSON archives, convert Markdown facets, calculate facet byte offsets, check alt text, set up app passwords, inspect DID and PLC identity links, build list record JSON, inspect Firehose event state, draft feed skeleton responses, draft moderation label definitions, decode JWT session claims, plan hashtags, build a content calendar, and find better posting windows before you schedule with ONYX.
Run a site for BlueSky creators? Embed these tools on your own site with one line of HTML.
BlueSky AI Prompt Generator
Generate prompts for BlueSky posts, threads, launches, replies, and rewrites.
Open toolBlueSky Post Generator
Turn a topic into BlueSky-ready post drafts without logging in.
Open toolBlueSky Thread Splitter
Paste long text and split it into clean 300-character BlueSky posts.
Open toolBlueSky Thread Pointer Builder
Build root and parent strong references for BlueSky reply records.
Open toolBlueSky Character Counter
Check BlueSky's 300-character limit before you publish.
Open toolBlueSky Payload Size Counter
Count UTF-8 bytes, tags, facets, and draft record payload size.
Open toolBlueSky Firehose Event Decoder
Check decoded sequence numbers, repo ops, ConsumerTooSlow risks, and Jetstream payload shape.
Open toolBlueSky Timestamp Converter
Convert local scheduling times into ISO 8601 createdAt strings.
Open toolBlueSky Line Break Formatter
Clean line breaks, trailing spaces, blank lines, and link-card risks before posting.
Open toolBlueSky JSON Archive Viewer
Inspect JSON backups and unpacked AT Protocol records locally in your browser.
Open toolBlueSky RSS to JSON Converter
Map RSS or Atom entries into reviewed BlueSky draft JSON before scheduling.
Open toolBlueSky Feed Skeleton Helper
Draft getFeedSkeleton response JSON for BlueSky custom feed generators.
Open toolBlueSky Image Metadata Stripper
Strip common photo metadata locally before uploading clean visual posts.
Open toolBlueSky Markdown Facets Converter
Convert Markdown links and hashtags into BlueSky rich text facet JSON.
Open toolBlueSky Facet Offset Calculator
Calculate UTF-8 byteStart and byteEnd ranges for rich text facets.
Open toolBlueSky DNS TXT Validator
Check _atproto TXT record names, did= values, and custom handle DNS readiness.
Open toolBlueSky Alt Text Reminder
Write, check, and copy image alt text before scheduling visual posts.
Open toolBlueSky App Password Guide
Create a revocable app password safely before connecting a scheduler.
Open toolBlueSky DID and PLC Lookup Helper
Check handle and DID syntax, then open public identity lookup links.
Open toolBlueSky Record Signature Verifier
Check CIDs, commit fields, and record signature verification steps.
Open toolBlueSky Curation and Mute List Builder
Draft list, listitem, and mute-list procedure JSON for BlueSky curation workflows.
Open toolBlueSky List Item Validator
Validate listitem subject DIDs, list AT URIs, and createdAt fields.
Open toolBlueSky Moderation Labeler Builder
Draft custom label value definitions and sample labeler policy JSON locally.
Open toolBlueSky JWT and Session Decoder
Decode JWT claims locally and inspect exp, iat, issuer, audience, and subject fields.
Open toolBlueSky Hashtag Generator
Generate simple hashtag sets for creator, founder, and product posts.
Open toolBlueSky Content Calendar Template
Build a weekly BlueSky plan around lessons, updates, questions, and threads.
Open toolBest Time to Post on BlueSky
Analyze public activity and find stronger posting windows.
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