at-least-once-delivery SKILL.md skillA

at-least-once-delivery from wntic/pyhouse is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add wntic/pyhouse/at-least-once-delivery@git:20261014.20fc6e0

Pins git:20261014.20fc6e0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
wntic/pyhouse
Path
plugins/pyhouse-universal/skills/at-least-once-delivery/SKILL.md
Versions recorded
3
Latest version
git:20261014.20fc6e0, committed Oct 14, 2026
First version recorded
Oct 11, 2026
Size
12,661 bytes
Repository stars
3
License
MIT

Use when a program receives units of work another party delivers, and delivers again until they are acknowledged — a queue or stream consumer, a webhook receiver, any handler a broker or a third-party sender calls — or is itself that sender, relaying an effect it recorded with a committed write, as an outbox relay does, in any project whatever its architecture. Owns when a unit is acknowledged and when it is returned, the bounded redelivery and the dead letter an operator reads, a redelivery…

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

# At-least-once delivery — a unit delivered until it is acknowledged

The obligations a program owes each **unit another party delivers to it and delivers again until it is
acknowledged** — a broker's message, a record read from a stream, a webhook request from a third party.
They hold in any project, whatever its architecture and whatever delivers the unit. None binds a broker:
the limit and the dead letter are the delivery mechanism's configuration, declared with the deployment,
and the code that receives the unit — a consumer wrapper, a route, an inbound adapter — is written
under the project's own entrypoint skill. Rule 6 is the same guarantee from the other side: a program
relaying an effect it recorded with a committed write is that sender to whoever receives it.

## When to use vs. neighbours

- The consumer process, its wrapper and the HTTP route that apply these rules in a flat-layered service
  → `flat-entrypoint`, in the `pyhouse-flat` plugin; the inbound adapter of a hexagonal service →
  `hex-architecture`, in the `pyhouse-hex` plugin. Both are examples; with neither installed, the
  project's own entrypoint applies them.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add wntic/pyhouse/at-least-once-delivery@sha256:d2ae986c7a2e734f

The line at the top of this page pins the label git:20261014.20fc6e0, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_todn6dpckmtradpm.svg)](https://markdownregistry.com/a/art_todn6dpckmtradpm)

0 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Oct 11, 2026 and Oct 14, 2026, about one every day.

versioncommittedcommitsizeaudit
git:20261014.20fc6e0 latest2026-10-14 20fc6e0 12,661 BA view · diff
git:20261011.3133b092026-10-11 3133b09 10,629 BA view · diff
git:20261011.4407dc92026-10-11 4407dc9 9,283 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12661 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

GitHub

wntic/pyhouse · 3 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_todn6dpckmtradpm
GET https://markdownregistry.com/api/v1/resolve?ref=wntic/pyhouse/at-least-once-delivery
GET https://markdownregistry.com/api/v1/blob/d2ae986c7a2e734fcb20e2a7d350c5c350907efae9c768ff5e4ba68fe0cfd448

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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