# Mem0 v2.0.19 — Mem0 Python SDK (v2.0.19)

- Product: Mem0 (https://whatsnew.fyi/product/mem0)
- Vendor: Mem0
- Date: 2026-08-24
- Version: v2.0.19
- Original notes: https://github.com/mem0ai/mem0/releases/tag/v2.0.19
- Permalink: https://whatsnew.fyi/product/mem0/releases/v2.0.19

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — HuggingFaceEmbedding now falls back to the HUGGINGFACE_API_KEY environment variable, then a placeholder key, when huggingface_base_url is set and no api_key is configured
- **fixed** — remove_code_blocks() now accepts list-shaped content by joining each block's text before stripping code fences instead of raising AttributeError
- **fixed** — create_procedural_memory() now raises a clear ValueError when the LLM returns no content for the summary instead of continuing with empty content
- **changed** — mem0.proxy no longer auto-installs litellm via subprocess and instead raises ImportError with installation instructions
- **fixed** — get_all() now sends page and page_size as independent query params instead of requiring both to be set before either was sent
- **added** — Add provider_override to AWSBedrockConfig for explicit provider name when model is an application inference profile ARN
- **fixed** — VllmConfig now falls back to the VLLM_BASE_URL environment variable when vllm_base_url is not passed explicitly

**Bug Fixes:**
- **Embeddings:** `HuggingFaceEmbedding` now falls back to the `HUGGINGFACE_API_KEY` env var, then a placeholder key, when `huggingface_base_url` is set and no `api_key` is configured. The OpenAI-compatible client used to talk to TEI endpoints raises at construction when no key resolves at all, so a TEI deployment that doesn't require a real key previously failed to initialize ([#6947](https://github.com/mem0ai/mem0/pull/6947))
- **Core:** `remove_code_blocks()` now accepts list-shaped content (a sequence of `{"text": ...}` blocks, as some agent frameworks pass) by joining each block's text before stripping code fences, instead of raising `AttributeError` from calling `.strip()` on a list ([#6947](https://github.com/mem0ai/mem0/pull/6947))
- **Core:** `create_procedural_memory()` (`Memory` and `AsyncMemory`) now raises a clear `ValueError` when the LLM returns no content for the summary, instead of continuing with empty content that surfaced as a confusing error further down the call ([#6947](https://github.com/mem0ai/mem0/pull/6947))
- **Proxy:** `mem0.proxy` no longer auto-installs `litellm` via a `pip install` subprocess when the import fails; it now raises `ImportError` with instructions to install it yourself. The auto-install could hang or fail silently in restricted environments and ran an unreviewed install on the caller's behalf ([#6947](https://github.com/mem0ai/mem0/pull/6947))
- **Client:** `get_all()` (sync and async) now sends `page` and `page_size` as independent query params instead of requiring both to be set before either was sent. Passing only `page_size` without `page` previously had it silently dropped, so results came back at the server's default page size ([#6900](https://github.com/mem0ai/mem0/pull/6900))
- **LLMs:** Add `provider_override` to `AWSBedrockConfig`, an explicit provider name (for example `"anthropic"`) for when `model` is an application inference profile ARN whose opaque ID has no provider substring for `extract_provider()` to detect. Without it, those ARNs raised `ValueError: Unable to determine provider` ([#6899](https://github.com/mem0ai/mem0/pull/6899))
- **LLMs:** `VllmConfig` now falls back to the `VLLM_BASE_URL` env var when `vllm_base_url` isn't passed explicitly. The default was filled in before the env var was ever checked, so `VLLM_BASE_URL` was silently ignored ([#6897](https://github.com/mem0ai/mem0/pull/6897))