Is Speclint open source?

Yes, Speclint is MIT licensed. The CLI and scoring engine are fully open source on GitHub. Paid tiers add unlimited usage, AI rewrites, and API access.

How is the score calculated?

Pure regex pattern matching across 5 dimensions — no AI involved in scoring. This makes results deterministic and reproducible, unlike LLM-based tools.

What is the MCP Server?

MCP (Model Context Protocol) lets AI coding agents like Claude and Cursor auto-lint specs before writing code. Install the server and your agent gets 3 tools: lint, score, and rewrite.

Speclint: Speclint scores your specs 0-100 across 5 dimensions before any AI agent touches them. Deterministic regex scoring — no AI hallucination in the diagnosis. CLI, GitHub Action, and MCP Server.

Name: Speclint
Rating: 5 (84 reviews)
Author: toolify

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Introduction:

Speclint scores your specs 0-100 across 5 dimensions before any AI agent touches them. Deterministic regex scoring — no AI hallucination in the diagnosis. CLI, GitHub Action, and MCP Server.

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Mar 10 2026

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Speclint Product Information

What is Speclint?

Speclint is an open-source spec linter that scores user stories and requirements on a 0-100 scale across 5 dimensions: Measurable Outcomes (20pts), Testable Criteria (25pts), Constraints (20pts), No Vague Verbs (20pts), and Verification Steps (15pts). The scoring is fully deterministic — pure regex pattern matching, no LLM involved. AI is only used for the optional rewrite feature, which rewrites failing specs to pass all checks. Available as: CLI (npx speclint lint), GitHub Action, MCP Server (3 tools), and REST API. Free tier: 5 lints/day. Paid plans start at $9/mo for unlimited linting and rewrites. Open source (MIT). Built for teams shipping to AI coding agents — if your spec scores below 70, the agent will hallucinate. Fix the spec first.

How to use Speclint?

Run npx speclint lint in your terminal, paste a user story, and get a 0-100 score instantly. Or add the GitHub Action to score specs on every PR. Or connect the MCP Server to Claude, Cursor, or any AI coding agent — it auto-lints specs before the agent writes code.

Speclint's Core Features

Deterministic 0-100 scoring across 5 dimensions

CLI, GitHub Action, and MCP Server

AI-powered spec rewrite to fix failing specs

Agent-ready threshold scoring (70+)

Open source (MIT) with paid tiers

Speclint's Use Cases

Score user stories before handing them to AI coding agents

Add spec quality gates to CI/CD pipelines

Rewrite vague requirements into agent-ready specs

Audit backlog quality across a sprint

FAQ from Speclint

Is Speclint open source?
How is the score calculated?
What is the MCP Server?

Speclint Support Email & Customer service contact & Refund contact etc.

Here is the Speclint support email for customer service: [email protected] . More Contact, visit the contact us page()
Speclint Company

Speclint Company name: Perpetual Agility LLC .

Speclint Company address: .

More about Speclint, Please visit the about us page().
Speclint Login

Speclint Login Link: https://speclint.ai/dashboard
Speclint Sign up

Speclint Sign up Link: https://speclint.ai/get-key
Speclint Github

Speclint Github Link: https://github.com/speclint-ai/speclint