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SpacePrompts
What it is
SpacePrompts is a prompt management platform for people and teams using AI. It provides web, API, and browser-extension access for saving, organizing, running, versioning, and reusing prompts. The Playground combines an editor, variables, model selection, and immediate runs. An Evaluator scores prompts, highlights weak areas, and gives improvement guidance. Each save creates a version that can be restored later. Chrome, Edge, and Firefox extensions can save highlighted webpage text as prompts. A separate token counter supports OpenAI, Claude, Gemini, and DeepSeek models, showing token totals and estimated costs. Pro and Team plans provide API access for retrieving, running, counting, and enhancing prompts, with a limit of 60 requests per minute per key. Team workspaces include role permissions and up to five members. Free includes 50 prompts; Pro costs $5 a month billed annually, and Team costs $9 a month billed annually.
For and against
For
- Playground includes variables and model selection
- Every save creates a restorable version
- Extensions support Chrome, Edge, and Firefox
- Token counter covers four model providers
- Free plan includes 50 prompts
Against
- Free plan limits daily enhancements and runs
- API access is limited to 60 requests per minute
- Extensions sync prompts to company servers
- Team plan supports up to five members
The verdict
SpacePrompts combines prompt organization, testing, evaluation, version control, and browser capture in one service. Its free tier is limited, while paid plans add larger allowances, API access, or team collaboration.
Who it suits
It suits designers, writers, marketers, API automation users, and teams managing shared AI prompts. Browser-extension users can capture webpage text, while teams can use shared libraries and permissions.
Plans and prices
Free
50 prompts · 3 enhancements/day · 3 generations/day · 3 Playground runs/day
Read 15 Oct 2026 · spaceprompts.com
Pro
Unlimited prompts · 300 enhancements/month · 300 generations/month · 300 Playground runs/month
Read 15 Oct 2026 · spaceprompts.com
Team
Everything in Pro · up to 5 members · shared library · collaborative editing
Read 15 Oct 2026 · spaceprompts.com
On the record
- AI model token counter
- The browser token counter supports OpenAI, Claude, Gemini, and DeepSeek models and shows token counts and estimated costs.spaceprompts.com · read 4 Oct 2026
- AI tool integrations
- The extension injects or reads prompts in ChatGPT, Claude, DeepSeek, Gemini, Copilot, Meta AI and Perplexity.spaceprompts.com · read 15 Oct 2026
- API
- The API can retrieve and run prompts, count tokens, and enhance prompts; access is available on Pro and Team plans and limited to 60 requests per minute per API key.spaceprompts.com · read 4 Oct 2026
- API availability
- REST API access is offered on Pro and Team plans through personal API keys.spaceprompts.com · read 15 Oct 2026
- API documentation depth
- The public reference documents authentication, base URL, rate limits, four endpoints, examples and response codes.spaceprompts.com · read 15 Oct 2026
- API enhancement
- The enhancement endpoint accepts prompt text up to 3,000 characters and returns an improved prompt.spaceprompts.com · read 15 Oct 2026
- API execution
- POST /prompts/run/{slug} runs a stored prompt against an optional query using SpacePrompts' default AI model.spaceprompts.com · read 15 Oct 2026
- API rate limit
- API keys are limited to 60 requests per minute and excess requests receive HTTP 429.spaceprompts.com · read 15 Oct 2026
- API retrieval
- GET /prompts/{slug} returns a prompt owned by the API-key holder and can return plain text or JSON.spaceprompts.com · read 15 Oct 2026
- API token counter
- The token-count endpoint supports OpenAI, Claude, Gemini, DeepSeek, Qwen and Llama model aliases.spaceprompts.com · read 15 Oct 2026
- Authentication
- Login supports email magic links plus Google, GitHub and Microsoft sign-in; the login page says data is never shared.spaceprompts.com · read 15 Oct 2026
- Browser extensions
- The prompt manager extension is available for Chrome, Edge, and Firefox and can save highlighted webpage text as a prompt.spaceprompts.com · read 4 Oct 2026
- Browser support
- The extension is available for Chrome, Firefox and Microsoft Edge and can save highlighted webpage text as a prompt.spaceprompts.com · read 15 Oct 2026
- Evaluation
- The Evaluator scores prompts, identifies weak areas, and offers guidance to improve them.spaceprompts.com · read 4 Oct 2026
- Export
- The library can be exported to JSON or Excel.spaceprompts.com · read 15 Oct 2026
- Founder origin
- The founder says SpacePrompts began after an API-automation project created too many difficult-to-track prompts.spaceprompts.com · read 15 Oct 2026
- Import update
- A June 14, 2026 release added JSON import for up to 300 prompts per file and raised character limits.spaceprompts.com · read 15 Oct 2026
- Integrations
- The privacy policy lists Google, GitHub, and Microsoft as OAuth providers for account authentication.spaceprompts.com · read 4 Oct 2026
