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fix: disable phantom tool injection when proxying for opencode

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opencode validates tool calls against its own registry and rejects
unknown tools like memory_query. The opencode plugin provides
mnemosyne_query/mnemosyne_status as registered MCP tools instead.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
This commit is contained in:
Joey Yakimowich-Payne 2026-03-13 11:43:56 -06:00
commit 6b9b3df64d
1 changed files with 19 additions and 15 deletions
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34
src/mnemosyne/gateway.py
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@ -1610,21 +1610,25 @@ def create_app(
# 4. Build ephemeral outbound view — never mutate the physical store
payload["messages"] = copy.deepcopy(ms.messages)
# 4a. Inject phantom tool definitions and resolve pending calls
from mnemosyne.phantom import inject_tools, inject_phantom_results, extract_phantom_calls
observe_only = inject_tools(payload)
# Check for pending phantom calls from the previous assistant turn
pending_calls = extract_phantom_calls(payload.get("messages", []))
if pending_calls:
inject_phantom_results(
payload["messages"],
pending_calls,
ps,
observe_only,
context_assembler=session.context_assembler,
session_id=session.id,
)
# 4a. Phantom tool injection — DISABLED when proxying for opencode.
# opencode validates tool calls against its own registry and rejects
# unknown tools like memory_query. Phantom tools require SSE stream
# interception + auto-continue which the gateway doesn't implement
# for the pass-through streaming path. The opencode plugin provides
# mnemosyne_query/mnemosyne_status as registered MCP tools instead.
#
# from mnemosyne.phantom import inject_tools, inject_phantom_results, extract_phantom_calls
# observe_only = inject_tools(payload)
# pending_calls = extract_phantom_calls(payload.get("messages", []))
# if pending_calls:
# inject_phantom_results(
# payload["messages"],
# pending_calls,
# ps,
# observe_only,
# context_assembler=session.context_assembler,
# session_id=session.id,
# )
# 4b. Apply fidelity-based content replacement
_apply_fidelity(payload, session)