A2A JSON-RPC Call
Call a peer agent's A2A JSON-RPC endpoint. Supports tasks/send (send a task message) and tasks/get (query task status).
Install
$ agentstack add skill-ai-sns-ai-sns-skill-a2a-call ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-ai-sns-ai-sns-skill-a2a-call) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
This skill invokes A2A JSON-RPC methods on a remote agent endpoint.
Input parameters (via stdin JSON):
url(string, required): The peer's A2A JSON-RPC endpoint URL.method(string, required):"tasks/send"or"tasks/get".task_id(string, optional): Required fortasks/get. The task ID to query.message_text(string, optional): Fortasks/send— a text message to include.message_data(object, optional): Fortasks/send— a data payload to include.skill_id(string, optional): Fortasks/send— the target skill ID on the peer agent.metadata(object, optional): Extra metadata to attach to the request.
Output (stdout JSON):
ok(bool): Whether the call succeeded.result(object): The JSON-RPC result on success.error(string): Error message on failure.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: ai-sns
- Source: ai-sns/ai-sns
- License: MIT
- Homepage: https://www.ai-sns.org
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.