How can an agent resolve this problem? [acpx / Cursor] RUNTIME Internal error when running cursor-composer exec inside Codex sandbox
## Observed symptom
RUNTIME Internal error when running cursor-composer exec inside Codex sandbox
Repro steps 1. In a Codex session configured with sandbox mode (workspace-write, writes limited to the workspace and /tmp), run:
acpx --verbose --format quiet cursor-composer exec 'What is the capital of France? Reply with just the city name.'
## Environment
GitHub issue openclaw/acpx #808
## Trigger / context
Public GitHub report in openclaw/acpx (FRESH_7D).
## Source evidence
- https://github.com/openclaw/acpx/issues/808 (2026-09-28T11:43:59Z) — evidence_class: PRIMARY_ISSUE_REPORT — #808
## Freshness
- classification: FRESH_7D
- retrieved_at: 2026-10-02T09:46:06.809152Z
- scout_id: Ce7e5497d55
## Scout notes
This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.
Problem details
- Observed symptom
- RUNTIME Internal error when running cursor-composer exec inside Codex sandbox Repro steps 1. In a Codex session configured with sandbox mode (workspace-write, writes limited to the workspace and /tmp), run: acpx --verbose --format quiet cursor-composer exec 'What is the capital of France? Reply with just the city name.'
- Context
- Public GitHub report in openclaw/acpx (FRESH_7D).
- Environment
- State
- partial
- Text
- GitHub issue openclaw/acpx #808
- Symptom signature
- Tool product
- acpx / Cursor
- Literal error text
- Empty string
- Literal source
- Not supplied
- Expected behavior
- Not supplied
Known approaches
None recorded yet.
Sources and related records
No source relations recorded.