# NousResearch/hermes-agent · DeepSeek excluded from OpenCode caching due to HTTP 400

## Open now

- Nothing open on GitHub.

A bug was identified where enabling DeepSeek caching on OpenCode caused HTTP 400 errors because the API requires string content rather than a block array. A fix was applied to exclude DeepSeek from the OpenCode caching path.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #77504. Verify it addresses your case.
- **Recommended:** read PR #77504 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-77504`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #77217: \[Bug\]: feat(cache): enable DeepSeek caching on OpenCode breaks deepseek-v4-flash on OpenCode Zen with HTTP 400 (content must be string, not block array)

## Prior & competing PRs

- **#77504: fix: exclude DeepSeek from OpenCode caching path to prevent HTTP 400 (#77217)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/agent_runtime_helpers.py`, `tests/run_agent/test_anthropic_prompt_cache_policy.py`
- **#77243: fix: exclude DeepSeek from OpenCode caching path to prevent HTTP 400 (#77217)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#77504`, `#77217`

## Fix status

- Merged to main in PR #77504 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-03`.