* Add M2M client credentials auth providers
Wrap the SDK's client_credentials and private_key_jwt OAuth providers as
FastMCP-idiomatic ClientCredentialsOAuthProvider and PrivateKeyJWTOAuthProvider,
enabling browser-free client authentication via Client(auth=...).
* Fix M2M token cache collision and explicit-scope drop
Namespace the token cache by client_id so distinct clients sharing one store don't overwrite each other's tokens; pin caller-supplied scopes so the token request keeps them; fix CodeQL URL-substring check in tests; drop unused logger.
* Preserve step-up scope union, scope-aware token cache, restore token expiry
Only pin the caller's explicit scopes on initial authorization, leaving the SDK's step-up scope union intact; namespace the token cache by requested scopes as well as client_id; restore persisted absolute expiry on init so an expired stored token is re-fetched.
* Skip expiry restore for non-expiring reloaded tokens
* Distinguish expires_in=0 from omitted when restoring expiry
* Scope step-up flag to the flow via ContextVar; runnable JWT signing example
* Reorganize docs navigation and add Apps documentation
Collapse Providers, Transforms, and Deployment under Servers. Add Apps
section with overview and low-level API pages. Add card images to welcome
page and README. Add NEW tags to recent features.
* Fix missing imports in Apps low-level API code examples
Add warning notes to documentation directing users to review
py-key-value documentation for backend maturity and limitations
before production use.
Co-authored-by: William Easton <strawgate@users.noreply.github.com>
* Update docs for required scopes
* add scopes
* Fix Azure scope validation
Azure returns unprefixed scopes in JWT tokens but requires prefixed scopes in authorization requests. The previous implementation incorrectly validated tokens against prefixed scopes, causing "invalid_token" errors.
Simplified AzureProvider to use standard JWTVerifier with unprefixed scopes for validation. Scopes are only prefixed when building the Azure authorization URL via _build_upstream_authorize_url() override.
Closes#2263
* Improve OAuth client token storage security documentation
Updated warning message and documentation to address security concerns
around storing OAuth credentials for multiple MCP servers.
