OpenCode v1.17.8: Faster Session Timelines and MCP Compatibility

SST

Tools official 1 src. ~1 min

OpenCode v1.17.8 (June 17, 2026) significantly speeds up session timeline loading and eliminates flicker and scroll jumps. MCP tools now work correctly with providers that enforce stricter JSON schema validation. Long-running MCP operations maintain active timeout handling rather than dropping silently.

Why it matters

OpenCode has reached 160K+ GitHub stars and 7.5M monthly active developers, making its MCP compatibility improvements broadly impactful for teams integrating custom MCP servers.

Importance: 2/5

Minor version update to a widely-used open-source coding agent.

opencode coding-agent mcp open-source release

Sources

official OpenCode v1.17.8 release notes