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fix: strip markdown code blocks from Gemini JSON responses#1281

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aelhajj wants to merge 1 commit intogetzep:mainfrom
aelhajj:fix/gemini-markdown-json-stripping
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fix: strip markdown code blocks from Gemini JSON responses#1281
aelhajj wants to merge 1 commit intogetzep:mainfrom
aelhajj:fix/gemini-markdown-json-stripping

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@aelhajj
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@aelhajj aelhajj commented Feb 28, 2026

Summary

Strip markdown code block wrappers (```json / ```) from Gemini responses before JSON parsing, fixing a crash when Gemini wraps JSON in markdown despite response_mime_type=application/json being set.

Type of Change

  • Bug fix
  • New feature
  • Performance improvement
  • Documentation/Tests

Objective

N/A (bug fix)

Testing

  • Unit tests added/updated
  • Integration tests added/updated
  • All existing tests pass

Tests added in tests/llm_client/test_gemini_client.py covering:

  • JSON wrapped in ```json block → parsed correctly
  • JSON wrapped in plain ``` block → parsed correctly
  • Plain JSON with no wrapper → unchanged, still works

Breaking Changes

  • This PR contains breaking changes

Checklist

  • Code follows project style guidelines (make lint passes)
  • Self-review completed
  • Documentation updated where necessary
  • No secrets or sensitive information committed

Related Issues

Closes #790

@danielchalef
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danielchalef commented Feb 28, 2026

All contributors have signed the CLA ✍️ ✅
Posted by the CLA Assistant Lite bot.

@aelhajj
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aelhajj commented Feb 28, 2026

I have read the CLA Document and I hereby sign the CLA

danielchalef added a commit that referenced this pull request Feb 28, 2026
2b3pro pushed a commit to 2b3pro/graphiti that referenced this pull request Mar 31, 2026
Port confirmed bug fixes from upstream getzep/graphiti PRs:

- PR getzep#1356: Fix label_propagation infinite loop by updating community_map
  before break check in bounded for-loop
- PR getzep#1362/getzep#1291: Strip markdown code fences from OpenAI generic client
  JSON responses before parsing
- PR getzep#1357: CJK character support in MinHash fuzzy dedup - use Unicode
  \w instead of [a-z0-9], detect CJK for 2-gram shingles vs 3-gram
- PR getzep#1332: Guard against null/invalid embeddings in similarity search
  by adding size() checks to Neo4j and FalkorDB vector queries
- PR getzep#1303: Search both edge directions during dedup resolution using
  bidirectional RELATES_TO match
- PR getzep#1330: Fix FalkorDB default_group_id from escaped '\\_' to '_'

Not applicable (TS port doesn't have the code):
- PR getzep#1281: No Gemini LLM client in TS port
- PR getzep#1276: TS resolver uses client-side scoring, not LLM context
- PR getzep#1289: TS reranker already returns 0 for empty logprobs
- PR getzep#1351: TS episode_mentions_reranker already sorts DESC
- PR getzep#1312: TS already validates node labels
- PR getzep#1212: TS addTripletFull already checks UUID collision
- PRs getzep#1326,1305,1295,1270,1222,1249,1272: FalkorDB RediSearch query
  building not present in TS port (uses Cypher CONTAINS)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ehfazrezwan added a commit to ehfazrezwan/neuralscape that referenced this pull request Apr 2, 2026
feafc42 Bump the uv group across 2 directories with 2 updates (getzep#1363)
c4e6923 Upstream Zep internal improvements (getzep#1361)
e88c09c @VictorECDSA has signed the CLA in getzep#1356
91fe7e0 @majiayu000 has signed the CLA in getzep#1351
c52786d @dudo has signed the CLA in getzep#1350
d631437 @Ker102 has signed the CLA in getzep#1339
73cff2c @chengjon has signed the CLA in getzep#1340
8c61763 @rhlsthrm has signed the CLA in getzep#1335
e6424ba @pratyush618 has signed the CLA in getzep#1332
6f05647 @bsolomon1124 has signed the CLA in getzep#1330
10d9139 @spencer2211 has signed the CLA in getzep#1326
1ca1468 Add hiring promotion section to README (getzep#1323)
19e44a9 Bump mcp-server to 1.0.2 and require graphiti-core>=0.28.2 (getzep#1317)
77b1609 Bump graphiti-core version to 0.28.2 (getzep#1315)
7d65d5e Harden search filters against Cypher injection (getzep#1312)
b10b488 Restore README title and subtitle (getzep#1314)
a9065fa Refresh README content and fix image refs (getzep#1313)
5a334ec @lvca has signed the CLA in getzep#1310
45c8040 @jawherkh has signed the CLA in getzep#1309
9eb2c9e @kraft87 has signed the CLA in getzep#1305
334c8fa @adsharma has signed the CLA in getzep#1296
b6f9d87 @StephenBadger has signed the CLA in getzep#1295
4b91076 feat: Add GLiNER2 hybrid LLM client (getzep#1284)
db54ce0 chore: update Docker images to graphiti-core 0.28.1 (getzep#1292)
edc71e8 @devmao has signed the CLA in getzep#1289
b4ddc55 @carlos-alm has signed the CLA in getzep#1288
aa8e81e @giulio-leone has signed the CLA in getzep#1280
6fdb352 @aelhajj has signed the CLA in getzep#1281
2099603 @avianion has signed the CLA in getzep#1278
9eb59f7 @themavik has signed the CLA in getzep#1214
98f5b5f fix: replace edge name with uuid in debug log (getzep#1261)
510bd50 @hanxiao has signed the CLA in getzep#1257
17a8ea9 @sprotasovitsky has signed the CLA in getzep#1254
9d509a2 @Yifan-233-max has signed the CLA in getzep#1245
ef52a2a chore: regenerate lockfiles to drop diskcache (getzep#1244)
7605303 chore: bump version to 0.28.1 (getzep#1243)
bde2f79 fix: replace diskcache with sqlite-based cache to resolve CVE (getzep#1238)

git-subtree-dir: graphiti
git-subtree-split: feafc42
@aelhajj
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aelhajj commented Apr 2, 2026

Hi,

Can this be reviewed ?

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[BUG] "Failed to parse structured response" when adding episode using Gemini

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