Vendors curry_core.py from Athena-Pro/Curry (with the str.format()/format_map()
sandbox-escape fix from https://github.com/Athena-Pro/Curry/pull/4 already
applied) into synapse/, since Curry itself isn't a pip-installable package -
it's meant to be pointed at via a config path, which only works from a source
checkout. Vendoring a single self-contained, stdlib-only file ships it inside
NexusOS's own wheel with no extra dependency to reconcile.
synapse/curry_store.py opens it into a module-level singleton (curry_db) at
import time, the same pattern as memory.store.store and
playbooks.store.playbook_store, and main.py imports it so it's genuinely
initialized at process startup - preloaded, not lazy-on-first-use. Backed by
its own CURRY_DB file (nexus_config.py), separate from memory.db.
NexusOS builds exactly one wheel (py3-none-any, no compiled extensions) -
there is no separate Windows/macOS/Linux artifact; platform differences are
handled by requirement overlays at install time, not by building different
wheels. Verified the same wheel actually carries this correctly: built it,
confirmed twine check passes, confirmed synapse/curry_core.py and
curry_store.py are present in the archive (bin/check.sh's packaging gate now
asserts this too), then installed that exact wheel into a throwaway venv and
round-tripped a declare_constant/get_constant_latest call against it with no
source checkout present - proving "preloaded and ready to be called" holds
from the shipped artifact, not just editable-install execution.
Android/Termux is unaffected by this change in either direction: it already
has a separate, documented, pre-existing blocker in docs/TERMUX.md (no
published Android pydantic-core wheel) that has nothing to do with Curry,
which is pure stdlib and adds no new native/binary dependency.
Scope: preload only, nothing wired into a chat-facing tool yet - no model or
user-authored content reaches declare_function/call_function today.
Verified: 216 backend tests pass (4 new in test_curry_store.py, including a
regression test proving the vendored sandbox fix survived the copy); the 12
pre-existing C/C++/Rust toolchain failures are unrelated and unchanged.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Separate bind and client addresses, include Ollama's response body in HTTP failures, and strip inline <think> blocks from complete and streamed replies.
Repair vector rows left behind by older databases at store startup. Keep the existing single-statement delete path from main and avoid reintroducing the redundant batched helper.
DoS/quota guardrails for the unauthenticated local APIs:
* Body-size middleware rejects oversized requests (Content-Length) before they
are buffered/base64-decoded (NEXUS_MAX_REQUEST_MB, default 32).
* Document upload enforces a decoded-byte cap (NEXUS_MAX_UPLOAD_MB, default 20)
and a PDF page-count cap (NEXUS_MAX_PDF_PAGES, default 500) as backstops for
chunked bodies and pathological files.
* A counter-based in-flight limiter bounds concurrent chats and document
ingests (NEXUS_MAX_CONCURRENT_CHATS/UPLOADS), returning 429 when saturated;
the chat slot is held for the whole SSE stream and released on completion or
client disconnect.
* /models/pull gains an opt-in allowlist (NEXUS_MODEL_ALLOWLIST); empty by
default so behaviour is unchanged, otherwise a bare repo name permits all its
tags.
Co-authored-by: Cursor <cursoragent@cursor.com>
Two tool/agent-layer hardening changes:
* fetch_url now resolves the target host and refuses to connect if any
resolved address is loopback, private (RFC1918/ULA), link-local (incl. the
169.254.169.254 cloud-metadata endpoint), multicast, reserved, or
unspecified. IPv4-mapped IPv6 is unwrapped first, and the guard re-runs on
every redirect hop so a public URL cannot 302 its way to an internal target.
* /chat/approve now requires a single-use token minted when the stream pauses
for approval and delivered only in that stream's tool_request event, compared
in constant time. Previously the pending approval was keyed solely on a
client-supplied conversation_id, so anyone who could enumerate a
conversation_id could approve another client's pending action.
The frontend threads the token from the tool_request event into the approve
call.
Co-authored-by: Cursor <cursoragent@cursor.com>
The Synapse backend and memory service bound 0.0.0.0 with wildcard CORS and no
auth, exposing the full unauthenticated admin/data API to the LAN. Default the
uvicorn bind to 127.0.0.1 (NEXUS_BIND_HOST override), scope CORS to known local
origins instead of "*", and add TrustedHostMiddleware to reject foreign Host
headers (which defeats DNS-rebinding, something same-origin CORS cannot stop).
NEXUS_ALLOWED_HOSTS / NEXUS_ALLOWED_ORIGINS allow opt-in LAN exposure, intended
to be paired with real authentication.
Co-authored-by: Cursor <cursoragent@cursor.com>
AthenaandClaude Sonnet 5
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