# Limits and supported formats

Source: https://docs.getdeeprecall.com/reference/limits/

> Current input, upload, email, and export bounds.

These bounds describe supported behavior. They do not imply that every accepted source will produce a memory.

## Memory tools

| Input                  | Limit                                       |
| ---------------------- | ------------------------------------------- |
| MCP `remember.content` | 100,000 trimmed characters                  |
| `recall.query`         | 2,000 characters                            |
| `ask.question`         | 4,000 characters                            |
| Recall/Ask `top_k`     | 1–50                                        |
| Recall tags            | 50 unique values, up to 100 characters each |

See the [tool reference](/reference/mcp-tools/) for defaults and strict field names.

## Documents

| Item            | Limit or supported formats       |
| --------------- | -------------------------------- |
| Original upload | 10 MiB                           |
| Extracted text  | 100,000 characters               |
| Text-based PDF  | 100 pages                        |
| Text            | UTF-8 `.txt`, `.md`, `.markdown` |
| Office          | `.docx`, `.pptx`, `.xlsx`        |
| Images          | `.jpg`, `.jpeg`, `.png`, `.webp` |

Scanned/image-only PDFs, encrypted PDFs, and legacy Office formats are unsupported. Text documents have no fixed extracted-memory count; content and individual-memory bounds still apply. MCP cannot upload a file.

## Email

Email extraction is selective: **zero to eight** memories per message. Supported non-image attachments share the parent email’s processing and source links. Images, inline logos, and signatures are excluded.

Additional allowed senders are limited to **20 exact email addresses**. Brain usernames are **3–40** ASCII letters, numbers, or hyphens and start/end with a letter or number. The chosen username is permanent; reserved names cannot be claimed.

| Admission or processing            | Bound                               |
| ---------------------------------- | ----------------------------------- |
| Original email                     | 10 MiB                              |
| Extracted body and attachment text | 100,000 characters                  |
| New accepted messages              | 50 per UTC day per brain            |
| Pending email jobs                 | 10 per brain                        |
| Supported attachment attempts      | 10 total, including nested messages |
| PDF pages across attachments       | 100 total                           |

Check the received source’s status for processing failures. A skipped attachment does not imply that the original message was discarded.

## Export

A synchronous export supports up to 5,000 memories, 5,000 entities, 10,000 relationships, and 20,000 memory/entity links. An oversized export fails explicitly instead of returning a partial snapshot. Import is not supported.

## Availability

Connection menus and eligibility depend on the AI provider and workspace. Hosted memory requires a connection. Local-only storage and universal connector support are not current product promises.