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Explorer/MCP/OrygnsCode/opa-mcp-server
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opa-mcp-server

OrygnsCode/opa-mcp-server

MCP server for Open Policy Agent (OPA) and the Rego policy language. Wraps the OPA CLI and Regal linter with 32 tools for authoring, evaluating, and debugging Rego policies through any MCP-compatible client.

OrygnsCode/opa-mcp-serverExternal link; availability not verifiedLicenseMIT LicenseLocal-only
The Ghost
This server runs locally on your machine. We can't scan it remotely; review the source code before installing.
Time indexed (4mo)
0toolsLocal/ STDIO4moindexed
Checked Sep 8, 2026
The scanner shows
This server runs locally. We can't scan it remotely; review the source code before installing.
First indexed May 8, 2026
Server Profile
Tools catalogued
0
No tools reported by this server.
Hosting
Local / STDIO
Runs on your machine. Has access to your filesystem, SSH keys, and environment variables.
Registry presence
Verified
Listed on the Official MCP Registry under Linux Foundation governance.
Liveness
No liveness checks recorded yet.
Publisher Verification
✓ Listed on the Official MCP Registry under Linux Foundation governance.
OrygnsCode/opa-mcp-serverExternal link; availability not verified
Environment variables (10)
OPA_URLstringOPTIONALdefault: http://localhost:8181
Base URL of an OPA REST endpoint, used by opa_* tools.
OPA_TOKENstringOPTIONAL
Bearer token for OPA, if your instance requires auth. Treated as a secret. Never echoed in logs or tool responses.
OPA_BINARYstringOPTIONALdefault: opa
Path to the opa CLI, used by rego_* tools.
REGAL_BINARYstringOPTIONALdefault: regal
Path to the regal linter. Only required by rego_lint.
OPA_MCP_LOG_FILEstringOPTIONALdefault: <tmpdir>/orygn-opa-mcp.log
Path the server appends logs to. The server never writes to stdout; that channel is reserved for the MCP protocol.
Show all 10 environment variables
OPA_MCP_LOG_LEVELstringOPTIONALdefault: info
One of debug, info, warn, error.
OPA_MCP_TIMEOUT_MSstringOPTIONALdefault: 30000
Hard timeout for any spawned subprocess (opa, regal). After this, the child gets SIGTERM and then SIGKILL.
OPA_MCP_ALLOWED_PATHSstringOPTIONAL
Comma- or semicolon-separated list of directories the server is allowed to read policies from. When unset, file-based tools refuse to read from disk.
OPA_MCP_HTTP_TIMEOUT_MSstringOPTIONALdefault: 15000
Timeout for HTTP requests to the OPA REST API.
OPA_MCP_MAX_RESPONSE_BYTESstringOPTIONALdefault: 100000
Hard cap on a single tool response. Larger payloads are truncated with a __truncated: true marker.

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