Agent Compatibility Matrix

Feature Support

Agent	Local STDIO	Remote HTTP	Skills/AGENTS.md	App UI	OAuth	Tool Filtering
Claude Code	✅	✅	✅	—	✅	✅ include/exclude
Codex CLI	✅	✅	✅ AGENTS.md + Agent Skills	—	—	✅ enabled/disabled
Gemini CLI	✅	✅	✅ Agent Skills (host-dependent)	—	✅	✅ include/exclude
OpenCode	✅	✅	✅ AGENTS.md	✅ Plugin	✅	✅ glob patterns
VS Code/Copilot	✅	✅	✅ Copilot instructions + Agent Skills	⚠️ Experimental	✅	✅ sandbox
Cursor	✅	⚠️ Verify	✅ Rules + Skills	—	—	⚠️ Limited
Claude Desktop	✅	—	—	—	—	—
Claude.ai Web	❌	✅	⚠️ Account feature	⚠️ Limited	✅	✅ tool allowlist
ChatGPT Web	❌	✅	—	✅ Apps SDK	✅	✅ tool allowlist
Antigravity	⚠️ Verify	✅	—	—	✅	—

Notes

• Local STDIO requires uvx kicad-mcp-pro or python -m kicad_mcp
• Remote HTTP requires a publicly accessible HTTPS endpoint with Streamable HTTP
• Skills are Agent Skills standard format (SKILL.md with references)
• App UI refers to custom UI components within the agent interface
• Tool Filtering is the ability to limit which MCP tools are exposed

Protocol Support

The table below describes client-side transport feature support, not server conformance tested in this repository. The maintained Codex examples include separate local stdio and HTTP configurations; older no-HTTP claims must not be interpreted as the current integration policy. A real-host smoke must be recorded before marking a client release as independently verified.

Agent	STDIO	SSE	Streamable HTTP	OAuth 2.1
Claude Code	✅	✅	✅	✅
Claude Desktop	✅	❌	❌	❌
Codex CLI	✅	❌	✅	Verify per host
Gemini CLI	✅	✅	✅	✅
OpenCode	✅	❌	✅	✅
VS Code	✅	✅	✅	✅
Cursor	✅	❌	✅	❌
ChatGPT Web	❌	✅	✅	✅
Claude.ai Web	❌	✅	✅	✅
Antigravity	✅	✅	✅	✅

Evidence confidence (October 2026)

The entries above describe intended/known integration capabilities and should not be read as a claim that every host has been independently installed and exercised in CI. The machine-validated static host catalog lives in integrations/common/agent-host-evidence.json. Actual supported build and runtime smoke evidence follows host verification.