cli-a2a

A command-line tool for communicating with an OmniRoute A2A server. A2A, or agent-to-agent communication, lets one software agent send tasks to another through a standard JSON-RPC interface.

In plain words
What is it for?
Use it to check server status, view available skills, send tasks, list or inspect task history, cancel tasks, and watch task progress.
Why use it?
It makes it possible to inspect the server and manage remote agent tasks from a terminal instead of using a separate interface.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/diegosouzapw/omniroute/cli-a2a
Any agent
npx skills add diegosouzapw/OmniRoute --skill cli-a2a
Clone the repo
git clone --depth 1 https://github.com/diegosouzapw/OmniRoute

Made for: Claude Code, Codex.

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 567 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00043 $0.00567
Opus 5 $0.00022 $0.00283
Sonnet 5 $0.00009 $0.00113
Haiku 4.5 $0.00004 $0.00057

Measured 2d ago against content hash 0a19e329dae2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cli-a2a scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • cli-a2a — 100% identical, 0 lines differ
skills/cli-a2a/SKILL.md · 143 lines

What it actually says

Overview

Interact with the OmniRoute A2A server from the CLI. Send tasks, inspect skill execution history, and test the JSON-RPC 2.0 agent-to-agent protocol interactively.

Quick install

npm install -g omniroute   # or: npx omniroute
omniroute --version

Subcommands

a2a

Agent-to-Agent (A2A) server

Example:

omniroute a2a

a2a status

Show A2A server status

Flags:

  • --json

Example:

omniroute a2a status

a2a card

Print the Agent Card JSON

Example:

omniroute a2a card

a2a skills

Example:

omniroute a2a skills

a2a invoke <skill>

Flags:

  • --input <json>
  • --input-file <path>
  • --wait
  • --timeout <ms>

Example:

omniroute a2a invoke <skill>

a2a tasks

Example:

omniroute a2a tasks

a2a list

Flags:

  • --status <s>
  • --skill <s>
  • --limit <n>
  • --since <ts>

Example:

omniroute a2a list

a2a get <id>

Example:

omniroute a2a get <id>

a2a cancel <id>

Flags:

  • --yes

Example:

omniroute a2a cancel <id>

a2a watch <id>

Example:

omniroute a2a watch <id>

a2a stream <id>

Example:

omniroute a2a stream <id>

a2a logs <id>

Example:

omniroute a2a logs <id>
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 143 lines · 43 tokens per session scan A 0a19e329dae2

Subscribe to this mod's changes

cli-a2a is a skill published in the GitHub repository diegosouzapw/OmniRoute (59,841 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 567 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

agent-session-monitor

Real-time agent conversation monitoring - monitors Higress access logs, aggregates conversations by session, tracks token usage. Supports web interface for viewing complete conversation history and costs. Use when users ask about current session token consumption, conversation history, or cost statistics.

higress-group/higress · 53 tokens

higress-auto-router

Configure automatic model routing using the get-ai-gateway.sh CLI tool for Higress AI Gateway. Use when: (1) User wants to configure automatic model routing, (2) User mentions 'route to', 'switch model', 'use model when', 'auto routing', (3) User describes scenarios that should trigger specific models, (4) User wants…

higress-group/higress · 88 tokens

ccs-delegation

Auto-activate CCS CLI delegation for deterministic tasks. Parses user input, auto-selects optimal profile (glm/kimi/custom) from /.ccs/config.json, enhances prompts with context, executes via ccs {profile} -p "task" or ccs {profile}:continue, and reports results. Triggers on "use ccs [task]" patterns…

kaitranntt/ccs · 102 tokens

harness-contract-change

Modifies the repository's agent contract including AGENTS.md, docs index, manifests, validation scripts, and contributor-facing harness wrappers. Use when updating agent documentation, changing repo manifests, editing validation scripts, modifying CI/workflow classification, or updating contributor-facing guides like…

vllm-project/semantic-router · 69 tokens

routing-policy-change

Modifies routing policy after signal extraction, including matched-decision logic, candidate-model selection, and downstream looper behavior. Use when changing decision predicates, thresholds, priorities, model ranking, cost or latency routing, or other post-signal routing policy.

vllm-project/semantic-router · 54 tokens

mcporter

Use the mcporter CLI to list, configure, auth, and call MCP servers/tools directly (HTTP or stdio), including ad-hoc servers, config edits, CLI/type generation, and MCP-backed skills that need a durable command path.

trpc-group/trpc-agent-go · 51 tokens