agentprism 0.1.6

Universal MCP server that exposes coding agents (Copilot, Claude Code, Codex) as subagents via a unified tool interface

agentprism

A universal MCP server that exposes coding agents — GitHub Copilot, Claude Code, Codex — as background subagents behind a single, unified tool interface.

agentprism lets one AI agent orchestrate other AI agents. Drop it into your MCP client (Claude Code, Cursor, Continue, …) and you gain seven tools — agent_spawn, agent_send, agent_wait, agent_status, agent_list, agent_kill, agent_models — that drive any supported coding agent through its native protocol. Run several in parallel, hand off tasks between them, or use a cheaper model as a worker for a more expensive planner. agentprism speaks each provider's wire protocol natively (ACP JSON-RPC for Copilot, stream-JSON for Claude Code, exec-resume for Codex) — no fragile screen-scraping.

Installation

Recommended — no install required (uvx):

# uvx runs agentprism directly from PyPI, no pip install needed
uvx agentprism

Or install permanently:

pip install agentprism
# or: uv tool install agentprism

Or from source:

git clone https://github.com/StefanMaron/agentprism
cd agentprism
pip install -e .

You also need at least one supported coding-agent CLI installed and authenticated:

Provider	CLI	Auth
Copilot	copilot (install)	copilot login
Claude Code	claude (install)	claude then /login
Codex	codex (install)	codex login

Usage with Claude Code

Add to ~/.claude/mcp.json (create if it doesn't exist):

{
  "mcpServers": {
    "agentprism": {
      "command": "uvx",
      "args": ["agentprism"],
      "type": "stdio"
    }
  }
}

If you installed agentprism permanently, use "command": "agentprism" with no args.

Restart Claude Code. The eight agent_* tools will appear. Try:

Call agent_providers to see what's available, then use agent_spawn to start a Copilot session in /tmp/playground with the task "write a Python script that prints prime numbers up to 100", then agent_wait for it to finish.

Usage with other MCP clients

Any MCP client that supports stdio servers works. The config shape is the same — point command at agentprism (or uvx + args: ["agentprism"]).

Helping your agent know when to delegate

agentprism's tool descriptions include trigger conditions, but for reliable delegation add a short snippet to your project's AGENTS.md or CLAUDE.md:

## Delegation with agentprism

You have access to the agentprism MCP server. Use it to delegate coding tasks
to external agents (Copilot, Claude Code, Codex) instead of doing the work yourself.

Trigger conditions — reach for agentprism when:
- The user says "let Copilot handle", "delegate to Copilot", "offload to an agent", or similar
- A task is large/mechanical and offloading would preserve your context window
- You want to run multiple tasks in parallel

Quick patterns:
- One-shot (no corrections): `agent_run(task, cwd)`
- Parallel workers: multiple `agent_spawn` calls, then `agent_wait` each
- With corrections: `agent_spawn` → `agent_wait` → `agent_send` → `agent_wait` → `agent_kill`

Default provider is Copilot (1x cost). Use `agent_providers` to check what's available.

Tool reference

Tool	Args	Returns
agent_providers	—	which providers are installed + authenticated
agent_models	provider?	model ids + cost multipliers per provider
agent_run	task, cwd, provider?, model?, timeout?	output — one-shot, blocks, auto-cleans up
agent_spawn	task, cwd, provider?, model?, mode?	session_id — non-blocking, persistent
agent_send	session_id, message	agent reply (blocks until response)
agent_status	session_id	working | idle | done | error
agent_wait	session_id, timeout_seconds?	accumulated output (blocks until done)
agent_list	—	all active sessions
agent_kill	session_id	terminates the subprocess

provider values: copilot, claude, codex — omit to use AGENTPRISM_DEFAULT_PROVIDER (default: copilot)

mode values (Copilot / Claude Code): agent (default), plan, autopilot

Push notifications

When a worker finishes, agentprism proactively notifies the orchestrating MCP client — no polling required.

If the client advertised the sampling capability (Claude Code does), agentprism sends a sampling/createMessage request: the LLM receives a structured wake-up message with the session summary and can immediately act on the results. Falls back to a notifications/message log event for clients that don't support sampling.

Provider support

Provider	Status	Protocol
GitHub Copilot	✓	ACP JSON-RPC over stdio
Claude Code	✓	stream-JSON bidirectional stdio
Codex	✓	codex exec / codex exec resume

Model cost multipliers

Use agent_models(provider="copilot") at runtime to get the current list. Examples:

Model (Copilot)	Multiplier	Notes
auto / claude-sonnet-4.6	1x	default
claude-haiku-4.5	0.33x	cheapest Claude
gpt-5-mini	0x	free
gpt-4.1	0x	free
claude-opus-4.7	7.5x	deep reasoning only
gpt-5.5	7.5x	GPT flagship

Architecture

┌──────────────────┐                     ┌──────────────────────────────┐
│  MCP client      │  agent_spawn(...)   │      agentprism server         │
│  (Claude Code,   │ ──────────────────► │                              │
│   Cursor, ...)   │  ◄──── result ────  │  ┌────────────────────────┐  │
└──────────────────┘                     │  │   ToolDispatcher       │  │
                                         │  └───────────┬────────────┘  │
                                         │              │               │
                                         │  ┌───────────▼────────────┐  │
                                         │  │   SessionRegistry      │  │
                                         │  │   session_id ► Adapter │  │
                                         │  └───────────┬────────────┘  │
                                         │              │               │
                                         │  ┌───────────▼────────────┐  │
                                         │  │   CopilotAdapter (ACP) │  │
                                         │  │   ClaudeCodeAdapter    │  │
                                         │  │   CodexAdapter         │  │
                                         │  └───────────┬────────────┘  │
                                         └──────────────┼───────────────┘
                                                        │ native protocol
                                                        ▼
                                          ┌─────────────────────────────┐
                                          │  coding agent subprocess    │
                                          └─────────────────────────────┘

Each adapter owns one subprocess per session. A reader coroutine demuxes stdout: responses resolve pending futures, while streaming updates accumulate in an output buffer that agent_wait and agent_send drain.

Configuration

Environment variables:

Variable	Default	Purpose
AGENTPRISM_LOG_LEVEL	INFO	Python logging level (logs go to stderr)
AGENTPRISM_COPILOT_BIN	copilot	Path to the copilot binary
AGENTPRISM_CLAUDE_BIN	claude	Path to the claude binary
AGENTPRISM_CODEX_BIN	codex	Path to the codex binary

Development

git clone https://github.com/StefanMaron/agentprism
cd agentprism
pip install -e ".[dev]"
ruff check .
pytest

License

MIT