a2a-error-handling SKILL.md skillA
a2a-error-handling 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-error-handling@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-error-handling/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260309.786511c, committed Mar 9, 2026
- Size
- 5,538 bytes
- Repository stars
- 40
- License
- MIT
Implement A2A error handling — JSON-RPC errors, A2A-specific error codes, task failure states, retry strategies, and graceful degradation. Use when building robust error handling in A2A agents.
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 Error Handling
## Before writing code
**Fetch live docs**:
1. Fetch `https://a2a-protocol.org/latest/specification/` for the error handling section
2. Web-search `site:github.com a2aproject A2A error codes` for error code definitions
3. Web-search `site:github.com a2aproject a2a-samples error` for error handling examples
4. Fetch SDK docs for error classes and exception types
## Conceptual Architecture
### Error Categories
A2A has three categories of errors:
1. **JSON-RPC Protocol Errors** — Malformed requests, invalid methods, parse failures
2. **A2A-Specific Errors** — Protocol-level issues specific to A2A operations
3. **Task-Level Failures** — The task itself fails during processing (task state → `failed`)
### JSON-RPC 2.0 Error Format
All errors follow the JSON-RPC 2.0 error response format:
```json
{
"jsonrpc": "2.0",
"id": "request-id",
"error": {
"code": -32600,
"message": "Invalid Request",
"data": { "details": "..." }
}
}
```
### Standard JSON-RPC Error Codes
| Code | Name | Meaning |
|------|------|---------|
| `-32700` | Parse error | Invalid JSON |
| `-32600` | Invalid request | Not a valid JSON-RPC request |
…Read the whole file at its exact version.
How to install
mdr add orcaqubits/agentic-commerce-skills-plugins/a2a-error-handling@sha256:3323d73683431e0aThe 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_ptrq3sruilmi3wzb)
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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 (5538 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_ptrq3sruilmi3wzb GET https://markdownregistry.com/api/v1/resolve?ref=orcaqubits/agentic-commerce-skills-plugins/a2a-error-handling GET https://markdownregistry.com/api/v1/blob/3323d73683431e0a88664ca22efc4f68d29bfc5f2b656db466e6c8817bec78a3
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.