crystaljson SKILL.md skillA
crystaljson from snowbanksdk/foundationdb-dotnet-client is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add snowbanksdk/foundationdb-dotnet-client/crystaljson@git:20261014.a2bb41bPins git:20261014.a2bb41b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- snowbanksdk/foundationdb-dotnet-client
- Path
.claude/skills/crystaljson/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261014.a2bb41b, committed Oct 14, 2026
- First version recorded
- Aug 9, 2026
- Size
- 67,020 bytes
- Repository stars
- 158
- License
- BSD-3-Clause
How to use CrystalJson, the custom JSON library in SnowBank.Core (namespace SnowBank.Data.Json). Covers the JsonValue DOM (JsonObject / JsonArray / JsonString / JsonNumber / JsonBoolean / JsonNull / JsonDateTime), the read-only vs mutable model, the CrystalJson static API (Serialize / Parse / Deserialize) and CrystalJsonSettings, the Roslyn source generator for fast reflection-free serializers and read-only/writable proxies ([CrystalJsonConverter] / [CrystalSerializable]), the…
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
# CrystalJson (SnowBank.Data.Json) CrystalJson is a high-performance, allocation-conscious JSON stack. It is **not** `System.Text.Json` or Newtonsoft - the type names look familiar (`JsonObject`, `JsonArray`, ...) but the API is different. The namespace is `SnowBank.Data.Json`. Add `using SnowBank.Data.Json;`. There are **two layers**, used together: 1. **The DOM** - `JsonValue` and its subtypes. A mutable-or-immutable tree you build, parse, navigate, and serialize. Use it for schemaless / dynamic JSON (config, arbitrary documents, change records). 2. **The source generator** - `[CrystalJsonConverter]` + `[CrystalSerializable(typeof(T))]` generate fast, reflection-free, AOT-friendly converters for your POCOs, plus typed **read-only / writable proxies** over the DOM. Use it for your domain types. `CrystalJson` (static class) is the entry point for serialize/parse/deserialize regardless of layer. --- ## 1. The JsonValue DOM `JsonValue` is the abstract base. Concrete types and their `JsonType`: | Type | `JsonType` | Notes | |---|---|---| | `JsonObject` | `Object` | key -> value map; mutable **or** read-only | …
Read the whole file at its exact version.
How to install
mdr add snowbanksdk/foundationdb-dotnet-client/crystaljson@sha256:dc95cb62639e3ea7The line at the top of this page pins the label git:20261014.a2bb41b, 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_7xa7emza3cjm7smo)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Aug 9, 2026 and Oct 14, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.a2bb41b latest | 2026-10-14 | a2bb41b | 67,020 B | A | view · diff |
| git:20260906.ccf8079 | 2026-09-06 | ccf8079 | 66,778 B | A | view · diff |
| git:20260823.0303e81 | 2026-08-23 | 0303e81 | 61,538 B | A | view · diff |
| git:20260810.7b540bd | 2026-08-10 | 7b540bd | 61,345 B | A | view · diff |
| git:20260810.a0d6819 | 2026-08-10 | a0d6819 | 61,527 B | A | view · diff |
| git:20260809.b12a846 | 2026-08-09 | b12a846 | 61,122 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 (67020 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
snowbanksdk/foundationdb-dotnet-client · 158 stars · license BSD-3-Clause · pushed 2026-10-20 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_7xa7emza3cjm7smo GET https://markdownregistry.com/api/v1/resolve?ref=snowbanksdk/foundationdb-dotnet-client/crystaljson GET https://markdownregistry.com/api/v1/blob/dc95cb62639e3ea769ef112689170e61fce6f4829bffea7eb7fe9e17e6873ae5
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.
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