agentica-server
Original：🇺🇸 English
Translated
Agentica server + Claude proxy setup - architecture, startup sequence, debugging
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NPX Install
npx skill4agent add parcadei/continuous-claude-v3 agentica-serverTags
Translated version includes tags in frontmatterSKILL.md Content
View Translation Comparison →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 |
|---|---|---|---|
| Human | agentica-server | Where server sends LLM inference requests |
| 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
bash
uv run python scripts/agentica/claude_proxy.py --port 8080Terminal 2: Agentica Server
MUST run from its directory:
bash
cd workspace/agentica-research/agentica-server
INFERENCE_ENDPOINT_URL=http://localhost:8080/v1/chat/completions uv run agentica-server --port 2345Terminal 3: Your Agent Script
bash
S_M_BASE_URL=http://localhost:2345 uv run python scripts/agentica/your_script.pyHealth Checks
bash
# Claude proxy health
curl http://localhost:8080/health
# Agentica server health
curl http://localhost:2345/healthCommon 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\n2. ModuleNotFoundError for agentica-server
Symptom:
ModuleNotFoundError: No module named 'agentica_server'Cause: Running from wrong directory.
uv run agentica-serverFix: Must first.
cd workspace/agentica-research/agentica-server3. Agent can't use Read/Write/Edit tools
Symptom: Agent asks for file contents instead of reading them.
Cause: Missing in claude_proxy.py CLI call.
--allowedToolsFix: Proxy must pass tool permissions:
bash
claude -p ... --allowedTools Read Write Edit Bash4. 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 |
|---|---|
| OpenAI-compatible proxy with SSE streaming |
| Local agentica-server installation |
| Multi-agent pattern documentation |
Quick Verification
Test the full stack:
bash
# 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)
- set for client scripts
S_M_BASE_URL - set for server
INFERENCE_ENDPOINT_URL - Both health checks return 200