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.
npx agentmods add skills/skilld-dev/skilld/microsoft-typescriptnpx skills add skilld-dev/skilld --skill microsoft-typescriptgit clone --depth 1 https://github.com/skilld-dev/skilldWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00057 | $0.02685 |
| Opus 5 | $0.00028 | $0.01342 |
| Sonnet 5 | $0.00011 | $0.00537 |
| Haiku 4.5 | $0.00006 | $0.00268 |
Grade A, and why
microsoft-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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
microsoft/TypeScript typescript
TypeScript is a language for application scale JavaScript development
Version: 6.0.2 Tags: dev: 3.9.4, tag-for-publishing-older-releases: 4.1.6, insiders: 4.6.2-insiders.20220225, latest: 6.0.2, beta: 6.0.0-beta, rc: 6.0.1-rc, next: 6.0.0-dev.20260323
References: package.json — exports, entry points • README — setup, basic usage • Docs — API reference, guides • GitHub Issues — bugs, workarounds, edge cases • Releases — changelog, breaking changes, new APIs
Search
Use skilld search "query" -p typescript instead of grepping .skilld/ directories. Run skilld search --guide -p typescript for full syntax, filters, and operators.
API Changes
This section documents version-specific API changes for TypeScript v5.7+, prioritizing recent major/minor releases.
-
BREAKING:
ArrayBufferno longer supertype ofTypedArraytypes — v5.9 changedArrayBufferrelationships; methods expectingArrayBuffernow rejectUint8Array,Buffer, etc. Fix by accessing.bufferproperty or using specificUint8Array<ArrayBuffer>types source -
NEW:
import defer * as ns from "module"— v5.9 syntax for deferred module evaluation; module loading deferred until namespace accessed, useful for conditional/lazy imports. Only supports namespace imports, not named/default exports source -
BREAKING:
TypedArraygenerics overArrayBufferLike— v5.7+ made allTypedArraytypes generic (Uint8Array<TArrayBuffer>), breaking code passingBuffer/Uint8ArraywhereArrayBufferexpected. Update@types/nodeand specify explicit buffer type or use.bufferproperty source
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.
- 2d ago First seen · 113 lines · 57 tokens per session scan A f605be94d57c
microsoft-typescript is a skill published in the GitHub repository skilld-dev/skilld (306 stars, last pushed 5d ago), licensed MIT. It adds 57 tokens to every session and 2,685 once invoked, about $0.0003 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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