a2a-task-lifecycle SKILL.md skillA
a2a-task-lifecycle from orcaqubits/agentic-commerce-skills-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add orcaqubits/agentic-commerce-skills-plugins/a2a-task-lifecycle@git:20260309.786511cPins git:20260309.786511c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- orcaqubits/agentic-commerce-skills-plugins
- Path
a2a-multi-agent/skills/a2a-task-lifecycle/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260309.786511c, committed Mar 9, 2026
- Size
- 4,539 bytes
- Repository stars
- 40
- License
- MIT
Implement A2A task lifecycle management — task creation, state transitions, terminal states, history, and artifacts. Use when building task state machines, handling state transitions, or managing task persistence.
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
# A2A Task Lifecycle ## Before writing code **Fetch live docs**: 1. Fetch `https://a2a-protocol.org/latest/specification/` for the Task object schema and state machine 2. Web-search `site:github.com a2aproject A2A task lifecycle states` for state transition rules 3. Web-search `site:github.com a2aproject a2a-samples task` for task handling examples 4. Fetch SDK docs for task-related classes and state management utilities ## Conceptual Architecture ### What a Task Is A Task is the **central unit of work** in A2A. It represents a request from a client agent to a server agent, tracks progress through well-defined states, accumulates messages and artifacts, and reaches a terminal state when complete. ### Task Structure Key fields of a Task object: - **id** — Unique task identifier (set by client or server) - **status** — Current state object containing `state` enum and optional `message` - **messages** — Array of messages exchanged (if `stateTransitionHistory` enabled) - **artifacts** — Array of output artifacts produced by the agent - **metadata** — Optional key-value pairs for custom data ### The 9 States | State | Terminal? | Description | …
Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/a2a-task-lifecycle@sha256:f114c860d045499eThe line at the top of this page pins the label git:20260309.786511c, 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_2awxrxdyckzh7ecr)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 9, 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 (4539 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
orcaqubits/agentic-commerce-skills-plugins · 40 stars · license MIT · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2awxrxdyckzh7ecr GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/a2a-task-lifecycle GET https://markdownregistry.com/api/v1/blob/f114c860d045499e4bc89ff8c5f496e6000986c605e708b402dc9b58807f9fb8
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.