Know-your-fate: Agent for Claude Code

.claude/agents/typescript-reviewer.md

typescript-reviewer is an agent for Claude Code from tf1993614/Know-your-fate. It costs 51 tokens per session (2,074 once invoked), scanned A, original, no licence file.

A reviewer for TypeScript and JavaScript code that checks types, asynchronous code, Node.js and browser security, and common coding patterns.

In plain words
What is it for?
Use it when changing TypeScript, JavaScript, or related project code to review type safety, async behaviour, and language-specific implementation choices.
Why use it?
It helps catch incorrect assumptions about data, mistakes in code that runs later, and security or style issues specific to these languages.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is tf1993614/Know-your-fate's own configuration. It tells Claude Code how to work on Know-your-fate itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Know-your-fate configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tf1993614/Know-your-fate. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tf1993614/Know-your-fate/main/.claude/agents/typescript-reviewer.md
Clone the repo
git clone --depth 1 https://github.com/tf1993614/Know-your-fate

Made for: Claude Code.

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 typescript-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/tf1993614/know-your-fate/typescript-reviewer/github.svg)](https://agentmods.dev/agents/tf1993614/know-your-fate/typescript-reviewer)
Your own site
<a href="https://agentmods.dev/agents/tf1993614/know-your-fate/typescript-reviewer"><img src="https://agentmods.dev/badge/agents/tf1993614/know-your-fate/typescript-reviewer/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 typescript-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/tf1993614/know-your-fate/typescript-reviewer"><img src="https://agentmods.dev/badge/agents/tf1993614/know-your-fate/typescript-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,074 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00051 $0.02074
Opus 5 $0.00026 $0.01037
Sonnet 5 $0.00010 $0.00415
Haiku 4.5 $0.00005 $0.00207

Measured 10d ago against content hash fcb0a9fa95cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

typescript-reviewer scanned grade A with 1 finding 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

- **`child_process` with user input**: Validate and allowlist before passing to `exec`/`spawn`
.claude/agents/typescript-reviewer.md · 125 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 125 lines · 51 tokens per session scan A fcb0a9fa95cb

Subscribe to this mod's changes

typescript-reviewer is an agent published in the GitHub repository tf1993614/Know-your-fate (13 stars, last pushed 1mo ago), with no licence file. It adds 51 tokens to every session and 2,074 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other agents, from other repositories

fec-typescript-reviewer

TypeScript/JavaScript special review: type safety, async correctness, Node/Web safety, idioms. Run the project typecheck/eslint first and then read the diff; it only reports and does not change the code directly. Suitable for .ts/.tsx/.js/.jsx changes or PR-level TS/JS reviews. Division of labor with…

bovinphang/frontend-craft · 0 tokens

agent-sdk-verifier-ts

Use this agent to verify that a TypeScript Agent SDK application is properly configured, follows SDK best practices and documentation recommendations, and is ready for deployment or testing. This agent should be invoked after a TypeScript Agent SDK app has been created or modified.

anthropics/claude-plugins-official · 56 tokens

ts-enforcer

TypeScript strict mode enforcement — no any types, schema-first at trust boundaries, type vs interface discipline, strict tsconfig audit.

bdfinst/agentic-dev-team · 29 tokens

angular-reviewer

Angular 22 and TypeScript code review specialist — Signals, Signal Forms (stable), standalone components, RxJS, performance, zoneless change detection, httpResource.

TheBeardedBearSAS/claude-craft · 36 tokens

logic-review

Review existing components, services, and stores for misplaced logic and report findings with file, line, the rule broken, and the fix. Use the logic-design agent to decide where something new should go.

AmadeusITGroup/otter · 43 tokens

ia-kieran-reviewer

Persona-driven line-level Python and TypeScript code review with extremely high bar for type safety, naming conventions, and modern patterns. Use for line-level Py/TS quality after PR implementation. For broader review workflow, use the code-review skill.

iliaal/whetstone · 54 tokens