delivery-semantics SKILL.md skillA
delivery-semantics from robsonkades/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add robsonkades/agent-skills/delivery-semantics@git:20261016.c769bd8Pins git:20261016.c769bd8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- robsonkades/agent-skills
- Path
skills/delivery-semantics/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261016.c769bd8, committed Oct 16, 2026
- First version recorded
- Sep 6, 2026
- Size
- 11,353 bytes
- Repository stars
- 3
- License
- Apache-2.0
Precise end-to-end delivery and processing semantics: acknowledgement placement, loss and duplicate windows, Kafka transactions, visibility leases, ambiguous outcomes and external side effects. Use when reviewing "exactly once", consumer commits, publisher confirms, redelivery or a handler that writes outside its broker. Idempotent handler design belongs to idempotency; retries, ordering, poison messages and fault assumptions have their own skills.
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
# Delivery Semantics ## Purpose Decide which delivery guarantee a path needs, and place each acknowledgement so the code actually provides it. The guarantee composes publication acceptance, broker durability and retention, consumer progress, effect completion and duplicate handling; no one setting covers the entire path. The failure this prevents is the system designed against a guarantee nobody implemented: a team believes the platform gives "exactly-once", the handler is not repeat-safe, and the first rebalance during a slow poll charges a customer twice. The second failure is its mirror — a consumer that acknowledges first and can silently drop unfinished work on a crash, which produces no error anywhere and is discovered by reconciliation months later. ## Workflow Java snippets are partial illustrations using Java 17 syntax, Kafka client 4.1 API and Jakarta Messaging 3.1 contracts, not complete consumers. Inspect resolved clients/provider, broker version, framework acknowledgement mode, transaction manager and durability/retention configuration. Existing project versions govern implementation; do not upgrade to fit a snippet. …
Read the whole file at its exact version.
How to install
mdr add robsonkades/agent-skills/delivery-semantics@sha256:f53e9b75c0e0eb68The line at the top of this page pins the label git:20261016.c769bd8, 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_tkinu3m7fz4yrmiz)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 6, 2026 and Oct 16, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.c769bd8 latest | 2026-10-16 | c769bd8 | 11,353 B | A | view · diff |
| git:20260927.9ecadfd | 2026-09-27 | 9ecadfd | 11,124 B | A | view · diff |
| git:20260923.832673e | 2026-09-23 | 832673e | 9,933 B | A | view · diff |
| git:20260911.37b054b | 2026-09-11 | 37b054b | 9,465 B | A | view · diff |
| git:20260906.e6ad4bd | 2026-09-06 | e6ad4bd | 8,617 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 (11353 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
robsonkades/agent-skills · 3 stars · license Apache-2.0 · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tkinu3m7fz4yrmiz GET https://markdownregistry.com/api/v1/resolve?ref=robsonkades/agent-skills/delivery-semantics GET https://markdownregistry.com/api/v1/blob/f53e9b75c0e0eb68e8bfe62cff22c5dc73092862d2a2fead263a8ddf3c8d9da0
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.