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@jamjet/ext-authz

v0.2.0

Published

JamJet Policy Decision Point exposed over the Envoy HTTP ext_authz contract. Allow, block, or hold MCP tool calls and emit AgentBoundary receipts, in front of any Envoy-compatible proxy.

Downloads

88

Vulnerabilities

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Links

Git

Maintainers

justsunilpjustsunilp

Keywords

ai-agentsagent-safetymcpext-authzenvoypolicy-decision-pointai-governance

Readme

@jamjet/ext-authz

A JamJet Policy Decision Point exposed over the Envoy HTTP external-authorization contract. Put it behind any Envoy-compatible proxy to allow, block, or hold MCP tool calls and emit AgentBoundary-family receipts.

Run

jamjet-ext-authz --policy ./policy.yaml --port 9191 --audit ./receipts.jsonl

The proxy is configured to call this service for each request. A 200 allows the call; a 403 blocks it; a 403 with WWW-Authenticate: insufficient_scope plus an x-jamjet-approval-url header means the call is held pending human approval.

AuthZen PDP surface

The same server is an OpenID AuthZen 1.0 PDP. POST /access/v1/evaluation takes the standard subject / action / resource request; action.name is the tool, resource.properties.arguments (object) enters the action hash, and resource.properties.server names the MCP target. A deny is HTTP 200 with decision: false. A require_approval rule answers with the approval id, URL, and status in context, and an approved hold permits exactly once. Batch evaluation is POST /access/v1/evaluations with all three evaluations_semantic options (64-item cap). Paths outside /access/* keep the Envoy HTTP ext_authz contract.

This is the OSS reference adapter. gRPC ext_authz with dynamic_metadata receipt correlation, and a Rust-native PDP, are follow-ups behind the same wire contract.