This suite has a standing principle: don't build a @vymalo plugin for something a mature MCP
server already does well. (We don't ship a Kubernetes plugin because
kubernetes-mcp-server exists.)
When we scoped a batch of "common utility" plugins, several candidates turned out to be already
solved by actively-maintained servers. Rather than re-implement them, wire the existing server
into OpenCode (or any MCP client) directly. @vymalo/opencode-devtools deliberately fills only the
gaps those servers don't cover (deterministic local utilities — see devtools.md).
Survey snapshot: June 2026. Star counts / versions move — spot-check the repo before depending on one. Pin versions and review permissions; an MCP server runs with your privileges.
| Need | Adopt | Notes |
|---|---|---|
| Simple recall (knowledge graph) | @modelcontextprotocol/server-memory |
Official, maintained. Entities + relations + observations over a JSON file. |
| Semantic / vector recall | Mem0 | Heavily-funded, semantic extraction + vector search; self-hosted or SaaS. |
| Need | Adopt | Notes |
|---|---|---|
| adb + iOS in one server | @mobilenext/mobile-mcp |
List devices, install/launch, screenshot, tap/swipe/type, UI tree — Android and iOS, real + emulated. |
| Xcode-build-aware iOS sim | getsentry/XcodeBuildMCP |
Build + run + simulator + UI automation; Sentry-maintained. |
{ "mcpServers": { "mobile": { "command": "npx", "args": ["-y", "@mobilenext/mobile-mcp"] } } }| Need | Adopt | Notes |
|---|---|---|
| Postgres + MySQL + SQLite | @bytebase/dbhub |
One MIT server; read-only mode, row limits, schema introspection. (The official server-postgres/server-sqlite were archived — had a SQL-injection CVE. Don't use them.) |
| Deep Postgres DBA | crystaldba/postgres-mcp |
Health checks, index tuning, EXPLAIN/workload analysis. |
{ "mcpServers": { "db": { "command": "npx", "args": ["-y", "@bytebase/dbhub", "--readonly", "--dsn", "postgres://…"] } } }@vymalo/opencode-devtools's convert group covers JSON/YAML/TOML/CSV interconversion + JSONPath.
For deep jq-compatible querying and schema validation, adopt:
bitflight-devops/mcp-json-yaml-toml— round-trip-safe conversion +yq/jq-style queries (no CSV — that's the slice devtools adds).
devtools' math group does arbitrary-precision arithmetic, units, base conversion and stats. For
symbolic calculus/algebra (SymPy/Maxima-backed), adopt:
SHSharkar/MCP-Mathematics— broad symbolic + financial coverage (Python dependency).
{ "mcpServers": { "memory": { "command": "npx", "args": ["-y", "@modelcontextprotocol/server-memory"] } } }