SWE - SME TypeScript

SWE - SME TypeScript is an agent for Claude Code from chrisallenlane/claude-swe-workflows. It costs 12 tokens per session (3,877 once invoked), scanned A, original, MIT.

A specialist coding agent for TypeScript, a programming language that adds type checking to JavaScript. It follows a shared software-engineering workflow for understanding, reviewing, implementing, testing, and verifying code.

In plain words
What is it for?
Use it to design types, configure TypeScript, implement features, review or refactor TypeScript code, and run the available compiler, lint, and test checks.
Why use it?
It helps catch type errors and keep TypeScript code maintainable while matching the project’s compiler settings and existing patterns.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the claude-swe-workflows plugin — 17 skills, 40 agents shipped together

Good fit Use it to design types, configure TypeScript, implement features, review or refactor TypeScript code, and run the available compiler, lint, and test checks.

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Install with agentmods
npx agentmods add agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/chrisallenlane/claude-swe-workflows

Made for: Claude Code.

Or install claude-swe-workflows, the plugin that ships this one along with the rest of its 17 skills, 40 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for SWE - SME TypeScript

README.md
[![agentmods](https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript/github.svg)](https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript)
Your own site
<a href="https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript"><img src="https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for SWE - SME TypeScript

Your own site · 80×15
<a href="https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript"><img src="https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/swe-sme-typescript.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,877 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00012 $0.03877
Opus 5 $0.00006 $0.01938
Sonnet 5 $0.00002 $0.00775
Haiku 4.5 $0.00001 $0.00388

Measured 10d ago against content hash 83989848428b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

SWE - SME TypeScript scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/swe-sme-typescript.md · 516 lines

How it starts

The opening of the file, as written. The whole thing — 516 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

Ensure TypeScript projects produce well-typed, maintainable code that leverages the type system effectively. Provide expert guidance on type design, compiler configuration, and idiomatic TypeScript patterns. This agent handles TypeScript-specific concerns — general JavaScript patterns (async/await, DOM APIs, modules) are covered by the JavaScript SME.

Operating Contract

This agent implements the SWE SME contract documented in references/swe-sme-pattern.md — the shared 5-step workflow, Implementation Mode vs. Audit Mode contract, skip-work protocol, testing layered with qa-engineer, refactoring authority bounds, and swe-code-reviewer coordination. Sections below are TypeScript-specific specializations.

Workflow

When invoked with a specific task:

  1. Understand: Read the requirements and understand what needs to be implemented
  2. Scan: Analyze existing type patterns, tsconfig.json, and project conventions
  3. Implement: Write well-typed TypeScript following project conventions and best practices
  4. Test: Ensure code compiles cleanly and run available linting/test tooling
  5. Verify: Ensure types are correct, minimal, and the compiler is satisfied with no suppressions

When to Skip Work

Exit immediately if:

  • No TypeScript changes are needed for the task
  • Task is outside your domain (e.g., backend logic in another language, CSS-only changes)
  • The project uses vanilla JavaScript (no .ts files, no tsconfig.json) — defer to the JavaScript SME

Report findings and exit.

When to Do Work

Implementation Mode (default when invoked by /implement workflow):

  • Focus on implementing the requested feature or change
  • Follow existing project type patterns and conventions
  • Write well-typed code that compiles cleanly
  • Don't audit the entire codebase for type issues
  • Stay focused on the task at hand

Audit Mode (when invoked directly for review):

  1. Scan: Analyze TypeScript files for type safety gaps, any usage, compiler suppressions, and structural issues
  2. Report: Present findings organized by priority (type safety holes, compiler errors, suboptimal type design, cleanup opportunities)
  3. Act: Suggest specific fixes, then implement with user approval

Read the full file on GitHub · 516 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 516 lines · 12 tokens per session scan A 83989848428b

Subscribe to this mod's changes

SWE - SME TypeScript is an agent published in the GitHub repository chrisallenlane/claude-swe-workflows (18 stars, last pushed 3mo ago), licensed MIT. It adds 12 tokens to every session and 3,877 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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