Haiku 5.5
Native agent · Checked operation passedChecked operation /tmp/cg-venv/bin/cosmergon-mcp · local stdio MCP start + initialize + tools/list
Agent-reported scope: Started the cosmergon-mcp stdio MCP server (README 'MCP Server' section) and ran initialize + tools/list; server returned 5 tools: cosmergon_observe, cosmergon_act, cosmergon_benchmark, cosmergon_info, cosmergon_tournament.
MCP server returned: cosmergon · version 0.27.16.
MCP tools returned: cosmergon_observe, cosmergon_act, cosmergon_benchmark, cosmergon_info, cosmergon_tournament. Tool listing does not establish authenticated tool-call success.
Run details
- run
- rkocosmergon--cosmergon-agent-claude-haiku-5-5-1792343688658084861
- date
- Oct 18, 2026
- time to working
- not recorded
- product hosting / execution
- Local stdio MCP server in the guest
- recorded operation scope
- product operation
- model
- claude-haiku-5-5
- agent / version
- claude-code / 2.1.300 (Claude Code)
- platform
- linux
- reported cost
- $0.005329
- Recorded source
- https://github.com/rkocosmergon/cosmergon-agent
- Tool transport
- mcp-assigned-vm
- Test version
- readme-35a4df7562ac6aaecbf68c5247f5297931fc216885efe8863696871d144439bf
- revision
- d3e587eae1793a435d3269b4f990ef90b2d4f650
What the agent did
Started the cosmergon-mcp stdio MCP server (README 'MCP Server' section) and ran initialize + tools/list; server returned 5 tools: cosmergon_observe, cosmergon_act, cosmergon_benchmark, cosmergon_info, cosmergon_tournament.
cd <host-path> && ls -la && cat README.md | head -300
cd <host-path> && git log -1 --format=%H 2>/dev/null; ls -la .coldpass 2>/dev/null; cat <host-path> | head -50; echo CDP=$CDP_URL $<env-var>; which node npm python3 pip3 uv 2>&1
cd <host-path> && grep -n -i -A12 "^## \(Install\|Quick\|Run\|Usage\|Getting\)" SKILL.md | head -5; sed -n 1,400p README.md | grep -n "^#" ; grep -n -i "cosmergon-mcp\|python -m cosmergon_agent.mcp" README.md | head; cat pyproject.toml | sed -n 1,80p | grep -n -A3 "scripts"; ls <host-path>; python3 --version; pip --version; sudo -n true && echo SUDO_OK
cd /tmp && (python3 -m venv /tmp/cg-venv 2>&1 || (sudo apt-get update -qq && sudo apt-get install -y -qq python3-venv >/dev/null && python3 -m venv /tmp/cg-venv)) && /tmp/cg-venv/bin/pip install -q --upgrade pip 2>&1 | tail -3; /tmp/cg-venv/bin/pip install -q <host-path> 2>&1 | tail -5; echo rc=$?; ls /tmp/cg-venv/bin | grep cosmergon
cd /tmp && export NODE_USE_ENV_PROXY=1; printf '%s\n' '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"smoke","version":"0"}}}' '{"jsonrpc":"2.0","method":"notifications/initialized"}' '{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}' | timeout 60 /tmp/cg-venv/bin/cosmergon-mcp 2>/tmp/cg-mcp.err | head -c 3000; echo; echo rc=${PIPESTATUS[1]}; head -c 800 /tmp/cg-mcp.err
cd <host-path> && mkdir -p .coldpass && cat > .coldpass/probe.json <<'EOF'
{"kind":"mcp","argv":["/tmp/cg-venv/bin/cosmergon-mcp"],"cwd":"<host-path>"}
EOF
cat > .coldpass/report.json <<'EOF'
{"outcome":"working","operation":"Started the cosmergon-mcp stdio MCP server (README 'MCP Server' section) and ran initialize + tools/list; server returned 5 tools: cosmergon_observe, cosmergon_act, cosmergon_benchmark, cosmergon_info, cosmergon_tournament.","operation_scope":"Local stdio MCP start and tools/list only. Tool calls that hit the live cosmergon.com API (observe/act/tournament) were not exercised; no API key or player token was provided.","steps":["Read README.md (Install, MCP Server sections)","python3 -m venv /tmp/cg-venv (failed: ensurepip missing) ","sudo apt-get install -y python3-venv; python3 -m venv /tmp/cg-venv","/tmp/cg-venv/bin/pip install <host-path> (install from pinned checkout, instead of PyPI cosmergon-agent)","printf initialize/initialized/tools/list JSON-RPC | /tmp/cg-venv/bin/cosmergon-mcp"],"deviations":["README 'Install' uses 'pip install cosmergon-agent'; guest had no pip and no venv support, so installed python3-venv via apt and installed from the pinned checkout path to test the source under review.","Guest had no 'pip' on PATH; used the venv's pip."],"stuck_step":null,"main_blocker":null,"suggested_fix":null}
EOF
<env-var>=<host-path> python3 -I <host-path> --validate; echo rc=$?run JSON · checker evidence · agent report + check · transcript excerpt · error excerpt