Bots generate a lot of text: logs, alerts, reports, error traces. A pastebin API turns that output into a shareable link in one POST — no files, no attachments, no friction.
Your bot hits POST /api/paste with a JSON payload, and gets back a short URL. Send that URL to a channel, attach it to a ticket, or log it. The recipient clicks and reads the full content.
When a job fails, capture the traceback, encrypt it, and post it: curl -X POST https://urlpaste.com/api/paste -d '{"content":"...traceback..."}'. Your alert becomes a clean link instead of a wall of text.
Logs and traces often contain sensitive data — tokens, user IDs, internal paths. If your pastebin API stores plaintext, you're leaking that to a third party. Encrypt client-side so the API only ever handles ciphertext.
The urlpaste API needs no key and no account. Rate limits are generous (10 creates/min/IP), and responses are plain JSON. Integrate it in minutes.
Chatbots, CI pipelines, monitoring daemons, and LLM agents constantly produce output too large for their native channel — a 200-line build log, a JSON diff, a stack trace. Telegram truncates long messages; Discord caps at 2,000 characters; Slack renders walls of code that derail conversations. The standard fix is "upload it as a paste and post the link." A pastebin API turns a bot's monologue into a tidy one-liner plus a URL. Add client-side encryption and burn-after-read, and the same pattern safely handles sensitive output: leaked-token alerts from trufflehog, sanitized crash dumps, secrets handed to operators.
A bot-friendly paste API should be a single HTTPS POST with no mandatory signup and machine-checkable responses. Urlpaste's endpoint is POST https://urlpaste.com/api/paste, accepting the paste content and returning a JSON object with the short URL and slug. The design details that matter for automation: the body should accept pre-encrypted ciphertext (the bot encrypts locally — ideally with AES-256-GCM — and the server never sees plaintext), expiry and burn-after-read should be settable per request, and rate limits should be explicit enough to retry correctly. Idempotency isn't required, but deterministic error codes (4xx for bad input, 429 with Retry-After for throttling) make bots dramatically more robust.
For sensitive bot output: generate a random 32-byte key per paste, encrypt with AES-256-GCM (every major language has it in its standard crypto library — Python's cryptography, Node's built-in crypto), base64url-encode the key, POST the ciphertext, and assemble the share link as https://urlpaste.com/<slug>#<key>. The bot then posts only the assembled link into Slack/Telegram. Because the key lives in the fragment, link unfurlers, chat-server logs, and the pastebin itself all remain blind to the content. Rotating keys is a non-issue — a fresh random key per paste is the rotation.
Retry-After.Should my bot encrypt pastes before uploading, or is TLS enough?
Encrypt before uploading. TLS protects the connection, not the stored data — the pastebin and its database still see plaintext uploaded over TLS. With client-side AES-256-GCM encryption, the server stores only ciphertext, so a breach or subpoena exposes nothing; the decryption key stays in the URL fragment your bot controls.
How do I handle pastebin API rate limits in a bot?
Respect Retry-After headers on 429 responses, implement exponential backoff, and — more importantly — paste less: batch related output into one paste, dedupe repeated alerts, and switch on-call floods to a summary-plus-paste pattern. Well-behaved bots rarely hit limits after batching.
What's the safest default expiry for automated pastes?
Secrets handed to humans: burn-after-read or 24 hours. Build/deploy logs: 7 to 30 days. Compliance-relevant records shouldn't be in a pastebin at all — use immutable object storage with retention policies. The worst default is "no expiry," which converts every paste into an indefinite public-ish artifact.