Agentica server + Claude proxy setup - architecture, startup sequence, debugging
name: agentica-server
description: Agentica server + Claude proxy setup - architecture, startup sequence, debugging
allowed-tools: [Bash, Read]
user-invocable: false
Agentica Server + Claude Proxy Setup
Complete reference for running Agentica SDK with a local Claude proxy. This enables Python agents to use Claude CLI as their inference backend.
When to Use
Use this skill when:
Starting Agentica development with Claude proxy
Debugging connection issues between SDK, server, and proxy
Setting up a fresh Agentica environment
Troubleshooting agent tool access or hallucination issues
Architecture
Agentica SDK (client code)
| S_M_BASE_URL=http://localhost:2345
v
ClientSessionManager
|
v
Agentica Server (agentica-server)
| INFERENCE_ENDPOINT_URL=http://localhost:8080/v1/chat/completions
v
Claude Proxy (claude_proxy.py)
|
v
Claude CLI (claude -p)
Environment Variables
Variable
Set By
Used By
Purpose
INFERENCE_ENDPOINT_URL
Human
agentica-server
Where server sends LLM inference requests
S_M_BASE_URL
Human
Agentica SDK client
Where SDK connects to session manager
KEY: These are NOT the same endpoint!
SDK connects to server (port 2345)
Server connects to proxy (port 8080)
Startup Sequence
Must start in this order (each in a separate terminal):
Terminal 1: Claude Proxy
uv run python scripts/agentica/claude_proxy.py --port 8080
Terminal 2: Agentica Server
MUST run from its directory:
cd workspace/agentica-research/agentica-server
INFERENCE_ENDPOINT_URL=http://localhost:8080/v1/chat/completions uv run agentica-server --port 2345
Terminal 3: Your Agent Script
S_M_BASE_URL=http://localhost:2345 uv run python scripts/agentica/your_script.py
Health Checks
# Claude proxy health
curl http://localhost:8080/health
# Agentica server health
curl http://localhost:2345/health
Common Errors & Fixes
1. APIConnectionError after agent spawn
Symptom: Agent spawns successfully but fails on first call with connection error.
Cause: Claude proxy returning plain JSON instead of SSE format.
Fix: Proxy must return Server-Sent Events format:
data: {"choices": [...]}\n\n
2. ModuleNotFoundError for agentica-server
Symptom:ModuleNotFoundError: No module named 'agentica_server'
Cause: Running uv run agentica-server from wrong directory.
Fix: Must cd workspace/agentica-research/agentica-server first.
3. Agent can't use Read/Write/Edit tools
Symptom: Agent asks for file contents instead of reading them.
Cause: Missing --allowedTools in claude_proxy.py CLI call.
Fix: Proxy must pass tool permissions:
claude -p ... --allowedTools Read Write Edit Bash
4. Agent claims success but didn't do task
Symptom: Agent says "I've created the file" but file doesn't exist.
Cause: Hallucination - agent describing intended actions without executing.
Fix: Added emphatic anti-hallucination prompt in REPL_BASELINE:
CRITICAL: Use ACTUAL tools. Never DESCRIBE using tools.
5. Timeout on agent.call()
Symptom: Call hangs for 30+ seconds then times out.
Cause: Claude CLI taking too long or stuck in a loop.
Fix: Check proxy logs for the actual CLI output. May need to simplify prompt.
Key Files
File
Purpose
scripts/agentica/claude_proxy.py
OpenAI-compatible proxy with SSE streaming
workspace/agentica-research/agentica-server/
Local agentica-server installation
scripts/agentica/PATTERNS.md
Multi-agent pattern documentation
Quick Verification
Test the full stack:
# 1. Verify proxy responds
curl http://localhost:8080/health
# 2. Verify server responds
curl http://localhost:2345/health
# 3. Test inference through proxy
curl http://localhost:8080/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{"model":"claude","messages":[{"role":"user","content":"Say hello"}]}'
Checklist
Before running agents:
Claude proxy running on port 8080
Agentica server running on port 2345 (from its directory)
S_M_BASE_URL set for client scripts
INFERENCE_ENDPOINT_URL set for server
Both health checks return 200
How do I install agentica-server?
Download .claude/skills/agentica-server/SKILL.md from the publisher, or copy the path and open the repository. PlugMCP lists the skill and does not host the file.
Where does agentica-server live?
The publisher keeps it at https://github.com/parcadei/Continuous-Claude-v3.
Which agents can use agentica-server?
Claude, Cursor, and Codex can read a SKILL.md you add from the publisher's repository.