a2a-jsonrpc-transport SKILL.md skillA
a2a-jsonrpc-transport 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-jsonrpc-transport@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-jsonrpc-transport/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260309.786511c, committed Mar 9, 2026
- Size
- 4,514 bytes
- Repository stars
- 40
- License
- MIT
Implement the A2A JSON-RPC 2.0 transport layer — request/response format, method routing, batch requests, and HTTP details. Use when building custom A2A transport handling or debugging protocol-level issues.
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 JSON-RPC 2.0 Transport
## Before writing code
**Fetch live docs**:
1. Fetch `https://a2a-protocol.org/latest/specification/` for the transport layer section
2. Web-search `site:github.com a2aproject A2A JSON-RPC transport` for transport protocol details
3. Fetch `https://www.jsonrpc.org/specification` for the JSON-RPC 2.0 base specification
4. Fetch SDK docs for transport-level classes and middleware
## Conceptual Architecture
### Why JSON-RPC 2.0
A2A uses JSON-RPC 2.0 as its transport protocol because:
- **Simple** — Lightweight request/response format
- **Standard** — Well-established protocol with broad tooling support
- **Language-agnostic** — Works with any language that handles JSON over HTTP
- **Extensible** — Custom methods without changing the protocol
### Request Format
Every A2A request is a JSON-RPC 2.0 request:
```json
{
"jsonrpc": "2.0",
"method": "message/send",
"id": "unique-request-id",
"params": { ... }
}
```
- **jsonrpc** — Always `"2.0"`
- **method** — The A2A method name (e.g., `message/send`, `tasks/get`)
- **id** — Client-generated unique ID for matching responses
- **params** — Method-specific parameters (object)
### Response Format
…Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/a2a-jsonrpc-transport@sha256:2ca4b03b6839fdabThe 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_vpxrnihzavkfxjcg)
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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 (4514 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_vpxrnihzavkfxjcg GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/a2a-jsonrpc-transport GET https://markdownregistry.com/api/v1/blob/2ca4b03b6839fdab46ad765644a0aac046ca8df5288ca13793fa31f1fcc5ef9c
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.