DevSpeak Utilities · a DevSpeak Labs product

Four tools for the inputs to AI agents.

Specs, system prompts, technical text and prompt tests: SpecStudio, Prompt Guardian, Dev Text Forge, PromptForge. Each app is free to use, and one Utilities Pro plan unlocks Pro in all four.

Explore the four appsSee Utilities Pro

Four apps, one account each, one plan

Agent task specs

SpecStudio

Safety-gated specs for browser AI agents

Turn a rough request into a safety-gated spec a browser agent can follow.

SpecStudio's Studio: a travel-booking request with allowed domains, constraints and success criteria, ready to compile into a spec

With Utilities Pro

  • Spec risk audit (OWASP LLM Top 10)
  • Export to AGENTS.md, CLAUDE.md and Cursor rules
  • Live page grounding
  • Pro template pack
Open SpecStudio

Gated prompt governance

Prompt Guardian

Attack-tested, human-approved system prompts

Attack, score and gate every system prompt change before it ships.

Prompt Guardian's refinement dashboard: a support-agent system prompt in the editor with a clean static scan

With Utilities Pro

  • Advanced attack packs
  • OWASP LLM Top 10 (2025) report
  • Regression guard for CI
Open Prompt Guardian

Dev text optimizer

Dev Text Forge

Native-level technical English, checked

Rewrite developer text into clear technical English that keeps every token.

Dev Text Forge's workbench: an informal note about a deploy script in the source pane, next to the optimized output pane and quality gates

With Utilities Pro

  • Agent context mode
  • Token diet report
  • Batch optimize
Open Dev Text Forge

Prompt engineering toolbox

PromptForge

Generate, lint, harden and test your prompts

A prompt-engineering toolbox: generators, a linter, tests and a workspace.

PromptForge's tool directory: prompt-engineering tools such as System Prompt Maker, Prompt Optimizer and Image to Prompt

With Utilities Pro

  • Prompt linter
  • One-click prompt hardening
  • Assertion-based prompt tests
Open PromptForge

Utilities Pro

Free stays free in every app. Utilities Pro adds the Pro features of all four apps, for one price.

Free

$0

Every app's core tools, with your own account in each app.

Utilities Pro, monthly

$5.99/month

Pro in SpecStudio, Prompt Guardian, Dev Text Forge and PromptForge.

Utilities Pro, yearly

$59.99/year

$5.00/month, about 17% less than monthly.

7-day Pro trial, no card required

Sign in with Google and it starts by itself: every Pro feature in all four apps, with up to 30 Pro actions a day (100 in total) and 3 premium-model runs a day (5 in total). Then you're back on Free automatically; nothing to cancel.

One trial per email. Not available to emails that already had Utilities Pro, and new trials are limited each day.

Start in any app: SpecStudio pricing · Prompt Guardian pricing · Dev Text Forge pricing · PromptForge pricing