[IN TESTING — self-hosted 0.16.6, Kimi-K2.5 via Synthetic Direct]
Four independent fixes that landed together on this stack:
helpers.py — skip PendingApprovalError when the associated run is already
cancelled or failed. Stale approvals from interrupted runs were blocking all
subsequent messages on that conversation. Now checks run status before raising;
falls back to raising on lookup failure (conservative).
letta_agent_v3.py — use prompt_tokens not total_tokens for context window
estimate. total_tokens inflated the estimate by including completion tokens,
triggering premature compaction. This was causing context window resets mid-
conversation and is the root of the token inflation bug (see #3242).
openai_client.py (both build_request_data paths) — strip reasoning_content,
reasoning_content_signature, redacted_reasoning_content, omitted_reasoning_content
from message history before sending to inference backends. Fireworks and Synthetic
Direct reject these fields with 422/400 errors. exclude_none handles None values
but not actual text content from previous assistant turns.
block_manager_git.py — skip DB write when block value is unchanged. Reduces
unnecessary write amplification on every memfs sync cycle.
memfs_client_base.py — remove redis_client= kwarg from GitOperations init.
Dependency was removed upstream but the call site wasn't updated.
Dockerfile / compose files — context window and config updates for 220k limit.
* auto fixes
* auto fix pt2 and transitive deps and undefined var checking locals()
* manual fixes (ignored or letta-code fixed)
* fix circular import
* remove all ignores, add FastAPI rules and Ruff rules
* add ty and precommit
* ruff stuff
* ty check fixes
* ty check fixes pt 2
* error on invalid
* feat(core): store block metadata as YAML frontmatter in .md files
Block .md files in git repos now embed metadata (description, limit,
read_only, metadata dict) as YAML frontmatter instead of a separate
metadata/blocks.json file. Only non-default values are rendered.
Format:
---
description: "Who I am"
limit: 5000
---
Block value content here...
Changes:
- New block_markdown.py utility (serialize_block / parse_block_markdown)
- Updated all three write/read paths: manager.py, memfs_client.py,
memfs_client_base.py
- block_manager_git.py now passes description/limit/read_only/metadata
through to git commits
- Post-push sync (git_http.py) parses frontmatter and syncs metadata
fields to Postgres
- Removed metadata/blocks.json reads/writes entirely
- Backward compat: files without frontmatter treated as raw value
- Integration test verifies frontmatter in cloned files and metadata
sync via git push
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Co-Authored-By: Letta <noreply@letta.com>
* fix: derive frontmatter defaults from BaseBlock schema, not hardcoded dict
Remove _DEFAULTS dict from block_markdown.py. The core version now
imports BaseBlock and reads field defaults via model_fields. This
fixes the limit default (was 5000, should be CORE_MEMORY_BLOCK_CHAR_LIMIT=20000).
Also:
- memfs-py copy simplified to parse-only (no serialize, no letta imports)
- All hardcoded limit=5000 fallbacks replaced with CORE_MEMORY_BLOCK_CHAR_LIMIT
- Test updated: blocks with all-default metadata correctly have no frontmatter;
frontmatter verified after setting non-default description via API
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Co-Authored-By: Letta <noreply@letta.com>
* fix: always include description and limit in frontmatter
description and limit are always rendered in the YAML frontmatter,
even when at their default values. Only read_only and metadata are
conditional (omitted when at defaults).
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Co-Authored-By: Letta <noreply@letta.com>
* fix: resolve read_only from block_update before git commit
read_only was using the old Postgres value instead of the update value
when committing to git. Also adds integration test coverage for
read_only: true appearing in frontmatter after API PATCH, and
verifying it's omitted when false (default).
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Co-Authored-By: Letta <noreply@letta.com>
* test: add API→git round-trip coverage for description and limit
Verifies that PATCH description/limit via API is reflected in
frontmatter after git pull. Combined with the existing push→API
test (step 6), this gives full bidirectional coverage:
- API edit description/limit → pull → frontmatter updated
- Push frontmatter with description/limit → API reflects changes
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Co-Authored-By: Letta <noreply@letta.com>
---------
Co-authored-by: Letta <noreply@letta.com>
PR #9309 changed the block storage from blocks/ to memory/ directory.
Update memfs_client.py and memfs_client_base.py to match.
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Co-authored-by: Letta <noreply@letta.com>
* feat: add memfs-py service
* add tf for bucket access and secrets v2 access
* feat(memfs): add helm charts, deploy workflow, and bug fixes
- Add dev helm chart (helm/dev/memfs-py/) with CSI secrets pattern
- Update prod helm chart with CSI secrets and correct service account
- Add GitHub Actions deploy workflow
- Change port from 8284 to 8285 to avoid conflict with core's dulwich sidecar
- Fix chunked transfer encoding issue (strip HTTP_TRANSFER_ENCODING header)
- Fix timestamp parsing to handle both ISO and HTTP date formats
- Fix get_head_sha to raise FileNotFoundError on 404
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Co-Authored-By: Letta <noreply@letta.com>
---------
Co-authored-by: Kian Jones <kian@letta.com>
Co-authored-by: Letta <noreply@letta.com>
