mcpb-bundle SKILL.md skillA
mcpb-bundle from hybridlabor-api/bdb-dev-optimized-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hybridlabor-api/bdb-dev-optimized-agent-skills/mcpb-bundle@git:20260727.48beb34Pins git:20260727.48beb34 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hybridlabor-api/bdb-dev-optimized-agent-skills
- Path
mcps/tdmcp/.claude/skills/mcpb-bundle/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260727.48beb34, committed Jul 27, 2026
- Size
- 3,917 bytes
- Repository stars
- 7
- License
- Apache-2.0
How to migrate the tdmcp Claude Desktop bundle from legacy .dxt to .mcpb (MCP Bundle) and keep it building — covers the manifest schema (verify against the installed packer, never hardcode), the build-dxt.mjs packer/zip-fallback flow, the npm scripts, and the full .dxt→.mcpb reference sweep across docs and scripts. Use when packaging or migrating the tdmcp desktop bundle.
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
# tdmcp Desktop bundle: .dxt → .mcpb Anthropic renamed Desktop Extensions from **DXT** (`.dxt`, packer `@anthropic-ai/dxt`, manifest key `dxt_version`) to **MCPB** (`.mcpb`, packer `@anthropic-ai/mcpb`, manifest key `manifest_version`). Legacy `.dxt` still installs in Claude Desktop, but new directory submissions should ship `.mcpb`. ## What this repo already has `scripts/build-dxt.mjs` is **already MCPB-aware**: it tries `@anthropic-ai/mcpb` first, falls back to legacy `@anthropic-ai/dxt`, then to a system `zip`. The bundle stages `manifest.json` at the archive root + `dist/`, `recipes/`, `td/`, `README.md`, `LICENSE`, `package.json`, and a production-only `node_modules`. So the migration is mostly **renaming the output + the references**, not a rewrite. `dxt/manifest.json` currently declares `"manifest_version": "0.3"` — already the modern MCPB key (not the legacy `dxt_version`), so the manifest is largely correct. ## The migration, concretely 1. **Manifest — verify, don't guess.** Before touching `manifest_version`, check what the installed packer accepts: `npx --yes @anthropic-ai/mcpb --help` (look for `pack` / `validate`). If it …
Read the whole file at its exact version.
How to install
mdr add hybridlabor-api/bdb-dev-optimized-agent-skills/mcpb-bundle@sha256:e0a60d7b157f4294The line at the top of this page pins the label git:20260727.48beb34, 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_qo4dqunsvnesrivd)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 27, 2026.
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 (3917 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
hybridlabor-api/bdb-dev-optimized-agent-skills · 7 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qo4dqunsvnesrivd GET https://markdownregistry.com/api/v1/resolve?ref=hybridlabor-api/bdb-dev-optimized-agent-skills/mcpb-bundle GET https://markdownregistry.com/api/v1/blob/e0a60d7b157f429442adcfd86fc7b5fa3aae6219202a9591efb7d8212cb0b6dd
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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