web-error-handling-result-types SKILL.md skillA
web-error-handling-result-types from agents-inc/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agents-inc/skills/web-error-handling-result-types@git:20260906.3dc53cePins git:20260906.3dc53ce in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agents-inc/skills
- Path
src/skills/web-error-handling-result-types/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260906.3dc53ce, committed Sep 6, 2026
- First version recorded
- Feb 2, 2026
- Size
- 12,055 bytes
- Repository stars
- 26
- License
- MIT
TypeScript Result/Either types for type-safe error handling, railway-oriented programming patterns, error as values.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# TypeScript Result Type Patterns > **Quick Guide:** A `Result<T, E>` is a discriminated union on `ok`, so TypeScript refuses to read `value` until the caller has checked. That moves a function's failure modes into its signature, where an exception hides them. Use it for expected failures — validation, parsing, requests — and keep exceptions for bugs and for conditions nothing downstream can act on. A custom implementation is about forty lines and the recommended default; the whole surface is in this skill. **Detailed Resources:** - [examples/core.md](examples/core.md) — the Result module, typed error definitions, wrapping throwing code, pattern matching - [examples/async.md](examples/async.md) — `Promise<Result>`, async chaining, retry, converting a promise - [examples/combining.md](examples/combining.md) — fail-fast, collect-all, object and sequential combination - [reference.md](reference.md) — operation lookup, what Results do not catch, error-type templates --- ## Which path applies - **Nothing exists yet** — write the module: the union, `ok`, `err`, `map`, `flatMap`, `match`, `tryCatch`. [examples/core.md](examples/core.md) is the whole file. …
Read the whole file at its exact version.
How to install
mdr add agents-inc/skills/web-error-handling-result-types@sha256:706bc29789e39908The line at the top of this page pins the label git:20260906.3dc53ce, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_e5pm7xblmwi4hf5x)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 2, 2026 and Sep 6, 2026, about one every 72 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260906.3dc53ce latest | 2026-09-06 | 3dc53ce | 12,055 B | A | view · diff |
| git:20260320.766fb9e | 2026-03-20 | 766fb9e | 17,677 B | A | view · diff |
| git:20260316.00cb75b | 2026-03-16 | 00cb75b | 16,483 B | A | view · diff |
| git:20260202.b236384 | 2026-02-02 | b236384 | 16,270 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12055 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
agents-inc/skills · 26 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_e5pm7xblmwi4hf5x GET https://markdownregistry.com/api/v1/resolve?ref=agents-inc/skills/web-error-handling-result-types GET https://markdownregistry.com/api/v1/blob/706bc29789e3990815860c9a70cce0fc7859a37a667e14ea58a19ded2e6214dd
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.