Connect Runs on your machine

Terminal

claude mcp add rebar -e REBAR_ROOT=<REBAR_ROOT> -e REBAR_MCP_READONLY=<REBAR_MCP_READONLY> -e REBAR_MCP_ALLOW_LLM=<REBAR_MCP_ALLOW_LLM> -e REBAR_MCP_DEDUP=<REBAR_MCP_DEDUP> -e REBAR_MCP_ALLOW_JIRA_SYNC=<REBAR_MCP_ALLOW_JIRA_SYNC> -e REBAR_MCP_TRANSPORT=<REBAR_MCP_TRANSPORT> -e REBAR_MCP_HTTP_HOST=<REBAR_MCP_HTTP_HOST> -e REBAR_MCP_HTTP_PORT=<REBAR_MCP_HTTP_PORT> -e REBAR_MCP_HTTP_PATH=<REBAR_MCP_HTTP_PATH> -e REBAR_MCP_HTTP_ALLOWED_HOSTS=<REBAR_MCP_HTTP_ALLOWED_HOSTS> -e REBAR_MCP_HTTP_ALLOWED_ORIGINS=<REBAR_MCP_HTTP_ALLOWED_ORIGINS> -e REBAR_MCP_HTTP_TLS_AT_EDGE=<REBAR_MCP_HTTP_TLS_AT_EDGE> -e REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP=<REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP> -e REBAR_MCP_AUTH_ENABLED=<REBAR_MCP_AUTH_ENABLED> -e REBAR_MCP_AUTH_STRATEGIES=<REBAR_MCP_AUTH_STRATEGIES> -e REBAR_MCP_AUTH_ISSUER_URL=<REBAR_MCP_AUTH_ISSUER_URL> -e REBAR_MCP_AUTH_RESOURCE_SERVER_URL=<REBAR_MCP_AUTH_RESOURCE_SERVER_URL> -e REBAR_MCP_AUTH_REQUIRED_SCOPES=<REBAR_MCP_AUTH_REQUIRED_SCOPES> -e REBAR_MCP_AUTH_STATIC_TOKENS_FILE=<REBAR_MCP_AUTH_STATIC_TOKENS_FILE> -e REBAR_MCP_AUTH_JWT_JWKS_URI=<REBAR_MCP_AUTH_JWT_JWKS_URI> -e REBAR_MCP_AUTH_JWT_ISSUER=<REBAR_MCP_AUTH_JWT_ISSUER> -e REBAR_MCP_AUTH_JWT_ALGORITHMS=<REBAR_MCP_AUTH_JWT_ALGORITHMS> -e REBAR_MCP_AUTH_JWT_LEEWAY=<REBAR_MCP_AUTH_JWT_LEEWAY> -e REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN=<REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN> -e REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT=<REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT> -e REBAR_MCP_AUTH_JWT_EXPECTED_TYP=<REBAR_MCP_AUTH_JWT_EXPECTED_TYP> -e REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST=<REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST> -e REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT=<REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT> -e REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID=<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID> -e REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV=<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV> -e REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST=<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST> -e REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD=<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD> -e REBAR_MCP_AUTH_PROXY_SECRET_ENV=<REBAR_MCP_AUTH_PROXY_SECRET_ENV> -e REBAR_MCP_AUTH_PROXY_SECRET_HEADER=<REBAR_MCP_AUTH_PROXY_SECRET_HEADER> -e REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER=<REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER> -e REBAR_MCP_AUTH_PROXY_SCOPES=<REBAR_MCP_AUTH_PROXY_SCOPES> -e REBAR_MCP_AUTH_CUSTOM_IMPORT=<REBAR_MCP_AUTH_CUSTOM_IMPORT> -- uvx nava-rebar==0.15.1

claude_desktop_config.json

{
  "mcpServers": {
    "rebar": {
      "command": "uvx",
      "args": [
        "nava-rebar==0.15.1"
      ],
      "env": {
        "REBAR_ROOT": "<REBAR_ROOT>",
        "REBAR_MCP_READONLY": "<REBAR_MCP_READONLY>",
        "REBAR_MCP_ALLOW_LLM": "<REBAR_MCP_ALLOW_LLM>",
        "REBAR_MCP_DEDUP": "<REBAR_MCP_DEDUP>",
        "REBAR_MCP_ALLOW_JIRA_SYNC": "<REBAR_MCP_ALLOW_JIRA_SYNC>",
        "REBAR_MCP_TRANSPORT": "<REBAR_MCP_TRANSPORT>",
        "REBAR_MCP_HTTP_HOST": "<REBAR_MCP_HTTP_HOST>",
        "REBAR_MCP_HTTP_PORT": "<REBAR_MCP_HTTP_PORT>",
        "REBAR_MCP_HTTP_PATH": "<REBAR_MCP_HTTP_PATH>",
        "REBAR_MCP_HTTP_ALLOWED_HOSTS": "<REBAR_MCP_HTTP_ALLOWED_HOSTS>",
        "REBAR_MCP_HTTP_ALLOWED_ORIGINS": "<REBAR_MCP_HTTP_ALLOWED_ORIGINS>",
        "REBAR_MCP_HTTP_TLS_AT_EDGE": "<REBAR_MCP_HTTP_TLS_AT_EDGE>",
        "REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP": "<REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP>",
        "REBAR_MCP_AUTH_ENABLED": "<REBAR_MCP_AUTH_ENABLED>",
        "REBAR_MCP_AUTH_STRATEGIES": "<REBAR_MCP_AUTH_STRATEGIES>",
        "REBAR_MCP_AUTH_ISSUER_URL": "<REBAR_MCP_AUTH_ISSUER_URL>",
        "REBAR_MCP_AUTH_RESOURCE_SERVER_URL": "<REBAR_MCP_AUTH_RESOURCE_SERVER_URL>",
        "REBAR_MCP_AUTH_REQUIRED_SCOPES": "<REBAR_MCP_AUTH_REQUIRED_SCOPES>",
        "REBAR_MCP_AUTH_STATIC_TOKENS_FILE": "<REBAR_MCP_AUTH_STATIC_TOKENS_FILE>",
        "REBAR_MCP_AUTH_JWT_JWKS_URI": "<REBAR_MCP_AUTH_JWT_JWKS_URI>",
        "REBAR_MCP_AUTH_JWT_ISSUER": "<REBAR_MCP_AUTH_JWT_ISSUER>",
        "REBAR_MCP_AUTH_JWT_ALGORITHMS": "<REBAR_MCP_AUTH_JWT_ALGORITHMS>",
        "REBAR_MCP_AUTH_JWT_LEEWAY": "<REBAR_MCP_AUTH_JWT_LEEWAY>",
        "REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN": "<REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN>",
        "REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT": "<REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT>",
        "REBAR_MCP_AUTH_JWT_EXPECTED_TYP": "<REBAR_MCP_AUTH_JWT_EXPECTED_TYP>",
        "REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST": "<REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT": "<REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD>",
        "REBAR_MCP_AUTH_PROXY_SECRET_ENV": "<REBAR_MCP_AUTH_PROXY_SECRET_ENV>",
        "REBAR_MCP_AUTH_PROXY_SECRET_HEADER": "<REBAR_MCP_AUTH_PROXY_SECRET_HEADER>",
        "REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER": "<REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER>",
        "REBAR_MCP_AUTH_PROXY_SCOPES": "<REBAR_MCP_AUTH_PROXY_SCOPES>",
        "REBAR_MCP_AUTH_CUSTOM_IMPORT": "<REBAR_MCP_AUTH_CUSTOM_IMPORT>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "rebar": {
      "command": "uvx",
      "args": [
        "nava-rebar==0.15.1"
      ],
      "env": {
        "REBAR_ROOT": "<REBAR_ROOT>",
        "REBAR_MCP_READONLY": "<REBAR_MCP_READONLY>",
        "REBAR_MCP_ALLOW_LLM": "<REBAR_MCP_ALLOW_LLM>",
        "REBAR_MCP_DEDUP": "<REBAR_MCP_DEDUP>",
        "REBAR_MCP_ALLOW_JIRA_SYNC": "<REBAR_MCP_ALLOW_JIRA_SYNC>",
        "REBAR_MCP_TRANSPORT": "<REBAR_MCP_TRANSPORT>",
        "REBAR_MCP_HTTP_HOST": "<REBAR_MCP_HTTP_HOST>",
        "REBAR_MCP_HTTP_PORT": "<REBAR_MCP_HTTP_PORT>",
        "REBAR_MCP_HTTP_PATH": "<REBAR_MCP_HTTP_PATH>",
        "REBAR_MCP_HTTP_ALLOWED_HOSTS": "<REBAR_MCP_HTTP_ALLOWED_HOSTS>",
        "REBAR_MCP_HTTP_ALLOWED_ORIGINS": "<REBAR_MCP_HTTP_ALLOWED_ORIGINS>",
        "REBAR_MCP_HTTP_TLS_AT_EDGE": "<REBAR_MCP_HTTP_TLS_AT_EDGE>",
        "REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP": "<REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP>",
        "REBAR_MCP_AUTH_ENABLED": "<REBAR_MCP_AUTH_ENABLED>",
        "REBAR_MCP_AUTH_STRATEGIES": "<REBAR_MCP_AUTH_STRATEGIES>",
        "REBAR_MCP_AUTH_ISSUER_URL": "<REBAR_MCP_AUTH_ISSUER_URL>",
        "REBAR_MCP_AUTH_RESOURCE_SERVER_URL": "<REBAR_MCP_AUTH_RESOURCE_SERVER_URL>",
        "REBAR_MCP_AUTH_REQUIRED_SCOPES": "<REBAR_MCP_AUTH_REQUIRED_SCOPES>",
        "REBAR_MCP_AUTH_STATIC_TOKENS_FILE": "<REBAR_MCP_AUTH_STATIC_TOKENS_FILE>",
        "REBAR_MCP_AUTH_JWT_JWKS_URI": "<REBAR_MCP_AUTH_JWT_JWKS_URI>",
        "REBAR_MCP_AUTH_JWT_ISSUER": "<REBAR_MCP_AUTH_JWT_ISSUER>",
        "REBAR_MCP_AUTH_JWT_ALGORITHMS": "<REBAR_MCP_AUTH_JWT_ALGORITHMS>",
        "REBAR_MCP_AUTH_JWT_LEEWAY": "<REBAR_MCP_AUTH_JWT_LEEWAY>",
        "REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN": "<REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN>",
        "REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT": "<REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT>",
        "REBAR_MCP_AUTH_JWT_EXPECTED_TYP": "<REBAR_MCP_AUTH_JWT_EXPECTED_TYP>",
        "REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST": "<REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT": "<REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD>",
        "REBAR_MCP_AUTH_PROXY_SECRET_ENV": "<REBAR_MCP_AUTH_PROXY_SECRET_ENV>",
        "REBAR_MCP_AUTH_PROXY_SECRET_HEADER": "<REBAR_MCP_AUTH_PROXY_SECRET_HEADER>",
        "REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER": "<REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER>",
        "REBAR_MCP_AUTH_PROXY_SCOPES": "<REBAR_MCP_AUTH_PROXY_SCOPES>",
        "REBAR_MCP_AUTH_CUSTOM_IMPORT": "<REBAR_MCP_AUTH_CUSTOM_IMPORT>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "rebar": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "nava-rebar==0.15.1"
      ],
      "env": {
        "REBAR_ROOT": "<REBAR_ROOT>",
        "REBAR_MCP_READONLY": "<REBAR_MCP_READONLY>",
        "REBAR_MCP_ALLOW_LLM": "<REBAR_MCP_ALLOW_LLM>",
        "REBAR_MCP_DEDUP": "<REBAR_MCP_DEDUP>",
        "REBAR_MCP_ALLOW_JIRA_SYNC": "<REBAR_MCP_ALLOW_JIRA_SYNC>",
        "REBAR_MCP_TRANSPORT": "<REBAR_MCP_TRANSPORT>",
        "REBAR_MCP_HTTP_HOST": "<REBAR_MCP_HTTP_HOST>",
        "REBAR_MCP_HTTP_PORT": "<REBAR_MCP_HTTP_PORT>",
        "REBAR_MCP_HTTP_PATH": "<REBAR_MCP_HTTP_PATH>",
        "REBAR_MCP_HTTP_ALLOWED_HOSTS": "<REBAR_MCP_HTTP_ALLOWED_HOSTS>",
        "REBAR_MCP_HTTP_ALLOWED_ORIGINS": "<REBAR_MCP_HTTP_ALLOWED_ORIGINS>",
        "REBAR_MCP_HTTP_TLS_AT_EDGE": "<REBAR_MCP_HTTP_TLS_AT_EDGE>",
        "REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP": "<REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP>",
        "REBAR_MCP_AUTH_ENABLED": "<REBAR_MCP_AUTH_ENABLED>",
        "REBAR_MCP_AUTH_STRATEGIES": "<REBAR_MCP_AUTH_STRATEGIES>",
        "REBAR_MCP_AUTH_ISSUER_URL": "<REBAR_MCP_AUTH_ISSUER_URL>",
        "REBAR_MCP_AUTH_RESOURCE_SERVER_URL": "<REBAR_MCP_AUTH_RESOURCE_SERVER_URL>",
        "REBAR_MCP_AUTH_REQUIRED_SCOPES": "<REBAR_MCP_AUTH_REQUIRED_SCOPES>",
        "REBAR_MCP_AUTH_STATIC_TOKENS_FILE": "<REBAR_MCP_AUTH_STATIC_TOKENS_FILE>",
        "REBAR_MCP_AUTH_JWT_JWKS_URI": "<REBAR_MCP_AUTH_JWT_JWKS_URI>",
        "REBAR_MCP_AUTH_JWT_ISSUER": "<REBAR_MCP_AUTH_JWT_ISSUER>",
        "REBAR_MCP_AUTH_JWT_ALGORITHMS": "<REBAR_MCP_AUTH_JWT_ALGORITHMS>",
        "REBAR_MCP_AUTH_JWT_LEEWAY": "<REBAR_MCP_AUTH_JWT_LEEWAY>",
        "REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN": "<REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN>",
        "REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT": "<REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT>",
        "REBAR_MCP_AUTH_JWT_EXPECTED_TYP": "<REBAR_MCP_AUTH_JWT_EXPECTED_TYP>",
        "REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST": "<REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT": "<REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID>",
        "REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV": "<REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST>",
        "REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD": "<REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD>",
        "REBAR_MCP_AUTH_PROXY_SECRET_ENV": "<REBAR_MCP_AUTH_PROXY_SECRET_ENV>",
        "REBAR_MCP_AUTH_PROXY_SECRET_HEADER": "<REBAR_MCP_AUTH_PROXY_SECRET_HEADER>",
        "REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER": "<REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER>",
        "REBAR_MCP_AUTH_PROXY_SCOPES": "<REBAR_MCP_AUTH_PROXY_SCOPES>",
        "REBAR_MCP_AUTH_CUSTOM_IMPORT": "<REBAR_MCP_AUTH_CUSTOM_IMPORT>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`REBAR_ROOT` Optional	Path to the repo root that holds the .tickets-tracker store (defaults to the git toplevel of the working dir).
`REBAR_MCP_READONLY` Optional	Set to 1 to expose only the read tools (no write/mutation tools).
`REBAR_MCP_ALLOW_LLM` Optional	Set to 1 to enable the billable LLM tools (review_code / scan_spec / verify_completion / review_plan); off by default.
`REBAR_MCP_DEDUP` Optional	In-flight de-duplication of the long-running gate tools (review_plan / verify_completion): a concurrent duplicate call for the same ticket+basis attaches to the running gate instead of launching a second billable LLM pass. On by default; set to 0 to disable (kill-switch).
`REBAR_MCP_ALLOW_JIRA_SYNC` Optional	Set to 1 to allow bridge_sync to perform live (mutating) Jira sync; otherwise bridge_sync uses dry-run behavior.
`REBAR_MCP_TRANSPORT` Optional	Transport for the MCP server: 'stdio' (default) or 'http' (the optional Streamable-HTTP transport).
`REBAR_MCP_HTTP_HOST` Optional	Bind host for the Streamable-HTTP transport (default 127.0.0.1).
`REBAR_MCP_HTTP_PORT` Optional	Bind port for the Streamable-HTTP transport (1-65535; default 8000).
`REBAR_MCP_HTTP_PATH` Optional	URL path the Streamable-HTTP transport serves on (default /mcp).
`REBAR_MCP_HTTP_ALLOWED_HOSTS` Optional	Comma-separated allowlist of exact host:port values accepted by the Streamable-HTTP DNS-rebinding protection; empty defaults to loopback.
`REBAR_MCP_HTTP_ALLOWED_ORIGINS` Optional	Comma-separated allowlist of exact Origin values accepted by the Streamable-HTTP DNS-rebinding protection; empty defaults to loopback.
`REBAR_MCP_HTTP_TLS_AT_EDGE` Optional	Set to 1 to acknowledge TLS is terminated at the edge; required to bind the Streamable-HTTP transport to a non-loopback host.
`REBAR_MCP_ALLOW_UNAUTHENTICATED_HTTP` Optional	Set to 1 to acknowledge running the Streamable-HTTP transport without a token verifier; required to boot the HTTP transport while auth is off.
`REBAR_MCP_AUTH_ENABLED` Optional	Set to 1 to enable MCP authentication (the composite token verifier + Resource-Server wiring); off by default.
`REBAR_MCP_AUTH_STRATEGIES` Optional	Comma-separated, ordered list of token-verifier strategies to compose (closed set: static, jwt, introspection, proxy, custom).
`REBAR_MCP_AUTH_ISSUER_URL` Optional	OAuth authorization-server issuer URL advertised in the Protected-Resource Metadata (RFC 9728) when auth is enabled.
`REBAR_MCP_AUTH_RESOURCE_SERVER_URL` Optional	The single resource identifier (RFC 8707 audience) for this server; the composite verifier re-checks every accepted token against it.
`REBAR_MCP_AUTH_REQUIRED_SCOPES` Optional	Comma-separated scopes a caller must hold; the SDK returns 403 insufficient_scope when a principal lacks one.
`REBAR_MCP_AUTH_STATIC_TOKENS_FILE` Optional	Path to the JSON secrets file for the static-bearer verifier (stores only SHA-256 digests of the accepted tokens).
`REBAR_MCP_AUTH_JWT_JWKS_URI` Optional	HTTPS JWKS endpoint the `jwt` verifier fetches signing keys from (an OIDC provider's .well-known/jwks.json).
`REBAR_MCP_AUTH_JWT_ISSUER` Optional	Expected `iss` claim for the `jwt` verifier; falls back to REBAR_MCP_AUTH_ISSUER_URL when unset.
`REBAR_MCP_AUTH_JWT_ALGORITHMS` Optional	Comma-separated PINNED, asymmetric-only JWS algorithms for the `jwt` verifier (default RS256,ES256); a symmetric algorithm on a JWKS source is refused.
`REBAR_MCP_AUTH_JWT_LEEWAY` Optional	Clock-skew leeway in seconds applied to exp/nbf validation by the `jwt` verifier (default 60).
`REBAR_MCP_AUTH_JWT_JWKS_REFETCH_COOLDOWN` Optional	Minimum seconds between JWKS refetches triggered by an unknown key id (the concurrency-safe flood guard; default 30).
`REBAR_MCP_AUTH_JWT_JWKS_TIMEOUT` Optional	HTTP timeout in seconds for the `jwt` verifier's JWKS fetch (default 10).
`REBAR_MCP_AUTH_JWT_EXPECTED_TYP` Optional	When set, the `jwt` verifier requires the JWT header `typ` to equal this (e.g. at+JWT per RFC 9068); unset skips the check.
`REBAR_MCP_AUTH_JWT_ALLOW_PRIVATE_JWKS_HOST` Optional	Set to 1 to permit a private/link-local/loopback JWKS host (SSRF guard is on by default); off by default.
`REBAR_MCP_AUTH_INTROSPECTION_ENDPOINT` Optional	The `introspection` verifier's RFC 7662 endpoint URL (must be https://); the opaque token is POSTed here on every request (no caching).
`REBAR_MCP_AUTH_INTROSPECTION_CLIENT_ID` Optional	The client id the `introspection` verifier presents to the Authorization Server via HTTP Basic (client_secret_basic).
`REBAR_MCP_AUTH_INTROSPECTION_CLIENT_SECRET_ENV` Optional	The NAME of the env var holding the introspection client secret (never the secret itself); must be present + non-empty at startup or the server refuses to start (fail-closed).
`REBAR_MCP_AUTH_INTROSPECTION_ALLOW_PRIVATE_HOST` Optional	Set to 1 to permit a private/link-local/loopback introspection endpoint host (SSRF guard is on by default); off by default.
`REBAR_MCP_AUTH_INTROSPECTION_ALLOW_MISSING_AUD` Optional	Set to 1 to accept an active introspection response that OMITS `aud` (many AS do); off by default (fail-closed reject).
`REBAR_MCP_AUTH_PROXY_SECRET_ENV` Optional	The NAME of the env var holding the trusted-proxy shared secret (never the secret itself); must be present + non-empty at startup or the `proxy` verifier refuses to start (fail-closed).
`REBAR_MCP_AUTH_PROXY_SECRET_HEADER` Optional	The header the fronting proxy sends its shared secret on; the identity is trusted only when this matches (constant-time; default x-proxy-auth).
`REBAR_MCP_AUTH_PROXY_IDENTITY_HEADER` Optional	The header carrying the proxy-authenticated principal identity, trusted only when the secret header validates (default x-forwarded-user).
`REBAR_MCP_AUTH_PROXY_SCOPES` Optional	Comma-separated fixed scope set granted to proxy-authenticated principals; empty by default (the principal holds no scopes).
`REBAR_MCP_AUTH_CUSTOM_IMPORT` Optional	The `custom` strategy's `module:factory` import string, resolving to a factory that returns a TokenVerifier; a TRUSTED operator config value that loads and executes the operator-configured code at startup (fail-closed on any load error).

Details

Package	`[email protected]` (PYPI, stdio)
First published	12 Nov 2026
Last updated	12 Nov 2026
Registry name	`io.github.navapbc/rebar`

Rebar

Connect Runs on your machine

Tools

Environment variables

Details

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