Adds field validators to CreateSSEMCPServer, CreateStreamableHTTPMCPServer,
and their Update counterparts to validate that server_url fields:
- Start with 'http://' or 'https://'
- Have a valid host
This prevents errors like 'httpx.UnsupportedProtocol: Request URL has an
unsupported protocol 'hthttps://'' caused by user input typos.
Fixes#8078👾 Generated with [Letta Code](https://letta.com)
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This fixes the asyncpg.exceptions.CharacterNotInRepertoireError that occurs
when tool returns contain null bytes (0x00), which PostgreSQL TEXT columns
reject in UTF-8 encoding.
Changes:
- Add sanitize_null_bytes() function to recursively remove null bytes from strings
- Update json_dumps() to sanitize data before serialization
- Apply sanitization in converters.py for tool_calls, tool_returns, approvals, and message_content
- Add comprehensive unit tests
Fixes#8014🤖 Generated with [Letta Code](https://letta.com)
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* fix: validate parallel tool calls with tool rules at create/update time
Move validation from runtime to agent create/update time for better UX.
Add client-side enforcement to truncate parallel tool calls when disabled
(handles providers like Gemini that ignore the setting).
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* update apis
* undo
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* fix: prevent human block overwrite when skills block missing
**Bug**: When connecting to agents created before skills blocks were
standard, the human block gets overwritten with skills directory content.
**Root cause**: agent_manager.py:1893-1898 had `block = block` (no-op).
When skills block doesn't exist, loop variable ends as last block in
core_memory (often "human"), then updates that wrong block.
**Fix**: Use `matched_block` variable to properly track found block.
Now correctly raises NoResultFound when block label doesn't exist.
**Impact**: Affects pre-December 2025 agents missing skills blocks.
Written by Cameron ◯ Letta Code
"The best error message is the one that never shows up." - Thomas Fuchs
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* fix: use correct method name in block update test
Change get_block_by_label_async to get_block_with_label_async in test.
Written by Cameron ◯ Letta Code
Co-Authored-By: Letta <noreply@letta.com>
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* feat: add zai provider support
* add zai_api_key secret to deploy-core
* add to justfile
* add testing, provider integration skill
* enable zai key
* fix zai test
* clean up skill a little
* small changes
* fix: prevent empty reasoning messages in streaming interfaces
Prevents empty "Thinking..." indicators from appearing in clients by
filtering out reasoning messages with no content at the source.
Changes:
- Gemini: Don't emit ReasoningMessage when only thought_signature exists
- Gemini: Only emit reasoning content if text is non-empty
- Anthropic: Don't emit ReasoningMessage for BetaSignatureDelta
- Anthropic: Only emit reasoning content if thinking text is non-empty
This fixes the issue where providers send signature metadata before
actual thinking content, causing empty reasoning blocks to appear
in the UI after responses complete.
Affects: Gemini reasoning, Anthropic extended thinking
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* fix: handle Anthropic thinking signature correctly
- Only include 'signature' in Anthropic message payload if it is not None (fixes BadRequestError).
- Capture and attach 'signature' to ReasoningMessage in streaming interface.
* fix(anthropic): attach signature to last reasoning message in stream
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