custom-engine SKILL.md skillC
custom-engine from alibaba/skill-up is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alibaba/skill-up/custom-engine@git:20260917.0186b47Pins git:20260917.0186b47 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 14 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alibaba/skill-up
- Path
e2e/testdata/custom-engine/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260917.0186b47, committed Sep 17, 2026
- First version recorded
- Jun 3, 2026
- Size
- 1,163 bytes
- Repository stars
- 1,406
- License
- Apache-2.0
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
# Custom Engine e2e fixture
This directory is a minimal skill-up fixture that exercises the **Custom
Engine** local and http transports end-to-end. It is consumed by
`e2e/custom_engine_test.go`.
`agent.sh` + `evals/eval.yaml` cover the **local** transport: `agent.sh` is a
deterministic stand-in for a real custom agent that reads the `SessionInput`
JSON the framework writes to `${input_file}` and emits a fixed `SessionResult`
on stdout. The case asserts that `final_message` flows from the agent's stdout
into the report.
`evals/eval-http.yaml` exercises the **http** transport against the same
`hello.yaml` case. `TestPipeline_CustomEngine_HTTPTransport` starts an
in-process `httptest` server, points `${CUSTOM_AGENT_ENDPOINT}` at it, and
asserts the posted `SessionInput` reaches the server and the returned
`SessionResult` flows into the report — so the http stand-in agent lives in the
test rather than in `agent.sh`.
The `eval-stateful-*.yaml` fixtures exercise opt-in stateful conversations for
both transports, including session-ID propagation, per-turn post-conditions,
capture, substitution, and a final response that needs no continuation ID.Read the whole file at its exact version.
How to install
mdr add alibaba/skill-up/custom-engine@sha256:86d3100a72d0e11fThe line at the top of this page pins the label git:20260917.0186b47, 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_ro24djzzodxeigaq)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 3, 2026 and Sep 17, 2026, about one every 53 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260917.0186b47 latest | 2026-09-17 | 0186b47 | 1,163 B | C | view · diff |
| git:20260623.1395c3a | 2026-06-23 | 1395c3a | 931 B | C | view · diff |
| git:20260603.653ae83 | 2026-06-03 | 653ae83 | 454 B | C | view |
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1163 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
alibaba/skill-up · 1,406 stars · license Apache-2.0 · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ro24djzzodxeigaq GET https://markdownregistry.com/api/v1/resolve?ref=alibaba/skill-up/custom-engine GET https://markdownregistry.com/api/v1/blob/86d3100a72d0e11fed4677500ceae66617bb14342ebeda00dc0434a9fde788af
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.