Tribal
Self-hosted semantic memory over MCP for an engineering team's tacit knowledge. Needs Postgres.
Using Tribal in Claude, Cursor, Gemini CLI, Cline, or Zed?
MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).
Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less
uv tool install mcpindex-gate && mcpindex-config-wireSemantic screen found no manipulation pattern in the description. Conformance probe not yet run.
mcpindex.integrity.descriptionpassINFOevidence“No malicious instructions found”via static_description
- - Semantic screen only - the deterministic conformance probe has not run on this server
- - Confidence is reported but not yet calibrated (v1)
- - Screen reads the tool description, not the live behavior
- - advisory
- - registry description only no input schema
- - screen model 8b
Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.
Own this server? Screen its description →
That verdict was true at screening time (snapshot 2026-07-23).
Contracts can change after screening, with no version bump. The gate pins Tribal’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.
See your first HOLD in 2 minutes →
Related: how to trust an MCP server · screen before install · silent contract drift
A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.
[](https://mcpindex.ai/server/io-github-tribal-memory-tribal)<a href="https://mcpindex.ai/server/io-github-tribal-memory-tribal"><img src="https://mcpindex.ai/api/v1/badge/io-github-tribal-memory-tribal" alt="mcpindex verdict" height="20" /></a>TRIBAL_DATABASE__URLPostgres (pgvector) connection string. Tribal is self-hosted; you provide the database. The supported, complete deployment is docker-compose.yml.
TRIBAL_PROJECT_REMOTEFirst-run only: the git remote that identifies the project bootstrapped on first start.
TRIBAL_PROJECT_NAMEFirst-run only: the name of the project bootstrapped on first start.
TRIBAL_SERVER__TRANSPORTContainerised transport: http or sse. The Docker image does not serve stdio; install the binary for stdio.
TRIBAL_SERVER__BIND_ADDRESSAddress the server binds inside the container. Must be 0.0.0.0 (not the loopback default) for the published port to be reachable.
TRIBAL_PUBLIC_MCP_URLThe URL clients use to reach the server (for example http://127.0.0.1:8725/mcp). Needed for OAuth dynamic client registration once the server binds a routable interface.
OPENAI_API_KEYOptional; only if an ingest or retrieval stage is configured to use OpenAI (defaults target a local Ollama).
ANTHROPIC_API_KEYOptional; only if a stage is configured to use Anthropic.
Database MCP server for MySQL, MariaDB, PostgreSQL & SQLite with PII redaction and write-prevention
Manage Supabase projects end to end across database, auth, storage, realtime, and migrations. Moni…
Explore your Messages SQLite database to browse tables and inspect schemas with ease. Run flexible…