Free library

Free AI prompts

Free AI prompts are ready-to-use instructions you can reveal and run at no cost — for writing, coding, marketing, images, and everything in between. Every free prompt on Prompt Dock passes the same human review as our premium prompts, so a free prompt is held to the same quality standard, not a lower one. Browse by model or category, reveal the full prompt text, and run it live in the in-app Playground to see the output on your own input. Start free, and only subscribe if you later want access to other creators' premium prompts.

79 prompts

SEO & GrowthFree

SERP Feature Gap Audit

Describe the SERP for your target query and get the features you are not eligible for — snippets, People Also Ask, video, images — with the specific on-page change each one requires to compete for it.

Gemini 3 Pro Preview9 views4.5 (2)
AI Agents & AutomationFree

Prompt Regression Suite

Give it a prompt you rely on and it builds the test cases that catch a regression when you edit it — normal inputs, edge cases, adversarial ones, and the pass criteria for each, so you can change a prompt without hoping.

Claude Opus 4.89 views5.0 (3)
Code & DevFree

Legacy Function Modernizer

Hand it an old function and your target language version, and get a modern rewrite that keeps the exact same behavior — with each change explained and every risky spot where old and new could diverge called out before you merge it.

Claude Sonnet 4.69 views4.8 (4)
Writing & EditingFree

Newsletter Issue Builder

Give it your topic, audience, and a few raw links or notes, and get a complete newsletter issue — subject line, opening hook, the main piece, short sections, and a closing CTA — written in one voice instead of assembled from fragments.

Claude Opus 4.89 views5.0 (3)
Writing & EditingFree

Documentation Rewrite Pass

Paste docs nobody can follow and get them restructured around what the reader is trying to DO — with the prerequisites stated, the steps in order, and every unexplained assumption surfaced as a question you need to answer.

Claude Sonnet 4.69 views5.0 (2)
SEO & GrowthFree

Search Intent Classifier

Paste a keyword list and get each one classified by intent, matched to the page type that can actually rank for it, and flagged where your existing page is the wrong format — the audit that explains why good content is not ranking.

Claude Sonnet 4.69 views4.3 (4)
Code & DevFree

Incident Postmortem Drafter

Turn a raw incident timeline into a blameless postmortem with a real root cause, contributing factors, and action items that each have an owner and a trigger — the document a team can act on rather than file away.

Claude Opus 4.89 views4.3 (3)
Product & UXFree

Feature Kill Decision Memo

Make the case for removing a feature — who still uses it, what it costs to keep, what breaks if it goes, and the migration path — so the decision gets made on evidence instead of deferred for another year.

Claude Opus 4.89 views5.0 (1)
MarketingFree

Customer Win-Back Campaign

Describe why customers churned and get a three-touch win-back campaign that addresses the actual reason they left — acknowledging it directly instead of pretending nothing happened, with a clear stop rule for who not to contact.

Claude Sonnet 4.69 views4.0 (1)
EducationFree

Assessment Rubric Builder

Name the assignment and what you are assessing and get a rubric with criteria described concretely enough that two graders agree — plus the feedback language that tells a student how to improve rather than just what they scored.

Claude Opus 4.89 views5.0 (4)
Data & AnalyticsFree

Metric Definition Reviewer

Paste how your team defines a metric and it finds the ambiguities that make two dashboards disagree — the unstated grain, timezone, filters, and edge cases — then rewrites it as a definition only one query can satisfy.

Claude Opus 4.89 views5.0 (1)
AI Agents & AutomationFree

Agent Failure Mode Audit

Describe an agent workflow and it maps where it will fail in production — loops, silent wrong answers, unsafe actions, and cost blowups — with the guardrail for each and the one that must exist before you ship.

Claude Opus 4.89 views4.3 (3)
Business & OpsFree

Board Update Composer

Turn your quarter's raw numbers and events into a board update that leads with what changed, states the bad news plainly, and asks for the specific help you need — the update that earns trust instead of managing perception.

Claude Opus 4.89 views4.7 (3)
Code & DevFree

Flaky Test Triage Report

Paste a test that passes locally and fails in CI, plus the CI log, and get a ranked diagnosis of why it is flaky — timing, shared state, ordering, or environment — with the specific fix for each and a way to prove the flake is gone.

Claude Opus 4.89 views5.0 (2)
Customer SupportFree

Macro Response Refiner

Paste a canned support reply and it rewrites it to sound like a person who read the ticket — keeping the accuracy, cutting the corporate padding, and marking exactly where the agent must personalize before sending.

Claude Sonnet 4.69 views4.5 (4)
Design & ImageFree

UI Empty State Illustration

Describe the screen and the mood you want and get a generation-ready prompt for an empty-state illustration that matches your product's style — simple enough to read at small size and never sad about having no data yet.

FLUX.2 [pro]9 views4.8 (4)
Social MediaFree

Carousel Post Scripter

Give it a topic and get a full carousel — the hook slide, one idea per slide, and a closing CTA — with the visual direction for each slide, so the whole set can be designed and published without another round of writing.

GPT 5.29 views4.7 (3)
ProductivityFree

Daily Plan Prioritizer

Paste today's tasks and meetings and get a realistic schedule built around your three real priorities, with time blocks that fit the hours you actually have. Cuts an overwhelming list down to a plan you can finish instead of one that sets you up to fail.

GPT-4o8 views
MarketingFree

Ad Headline Machine

Give it a product and get ten paid-ad headlines spread across five proven persuasion angles — outcome, pain, curiosity, social proof, and urgency. Enough range to find the one that clicks for your audience instead of betting on a single line.

Claude Sonnet 4.68 views
Research & DataFree

Competitive Teardown

Name your product and its competitors and get a rigorous side-by-side teardown across positioning, features, pricing, and gaps — ending in a clear wedge you can actually own. The analysis that turns a vague sense of the market into a real strategy.

GPT-4o8 views
EducationFree

Reading Comprehension Set

Give a grade level and a topic and get an original passage of about two hundred words pitched precisely at that level, plus comprehension questions to match. Leveled reading material ready to hand out, without hunting for the right text.

Claude Sonnet 4.68 views
Code & DevFree

Type Error Untangler

Paste a wall of generic type errors and get the ONE real mismatch that caused the cascade, explained in plain terms, plus the minimal annotation that fixes it — without resorting to `any` or casting the problem away.

Claude Sonnet 4.68 views4.7 (3)
Design & ImageFree

Moodboard Brief Synthesizer

Describe a loose vibe and get it turned into a structured moodboard brief — palette, textures, references, and keywords — that a team can actually source against. Turns a feeling in your head into a brief everyone can align on.

Flux.18 views
Data & AnalyticsFree

Anomaly Explanation Assistant

Describe a metric that suddenly moved and it walks the causes in the right order — instrumentation first, then mix shifts, then real behavior change — so you rule out the boring explanations before writing the story.

Claude Opus 4.88 views5.0 (2)

Frequently asked

Where can I find the best free AI prompts?

Prompt Dock's free collection gathers human-reviewed prompts you can reveal and run without paying. Every free prompt passes the same review as our premium ones, so quality isn't the trade-off. Filter by model or category, reveal the full text, and run it live in the Playground to judge it on your own input.

Are the free prompts really free?

Yes. Free prompts can be revealed and run right away at no cost — no trial, no card. Only prompts an author marks premium require a subscription to unlock. You can build an entire workflow from free prompts and upgrade later only if you want others' premium work.

Which AI models do the free prompts work with?

Free prompts are written for models like Claude, GPT/ChatGPT, Gemini, Midjourney, and DALL·E, with a recommended model on each listing. The in-app Playground runs prompt text against Claude so you can test any prompt before copying it into your tool of choice.

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