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feat: extract text from fetched PDFs

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buzzert
2026-11-01 14:17:40 -08:00
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13 changed files with 768 additions and 43 deletions
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docs/api/streaming-chat.md
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@@ -213,7 +213,7 @@ Terminal tool-call event:
- `anthropic`: backend uses Anthropic's Messages API and may execute the same internal tools with `tool_use`/`tool_result` content blocks before producing final text.
- `xai`: backend uses xAI's OpenAI-compatible Chat Completions API and may execute the same internal tool calls before producing final text.
- `gemini`: backend uses Google's native Gemini `streamGenerateContent` API and may execute the same internal tool calls before producing final text.
- `fetch_url` sends browser-like navigation headers for outbound URL requests to reduce false 403s from sites that reject generic server clients.
- `fetch_url` sends browser-like navigation headers for outbound URL requests to reduce false 403s from sites that reject generic server clients. It converts HTML to text and extracts selectable PDF text page by page (without OCR), including when the response media type is inaccurate but the PDF signature is present. URL downloads are limited to 10 MiB, PDF extraction to 30 pages per call and an isolated worker terminated after 8 seconds, and accumulated PDF text to `maxCharacters` (default 12,000; maximum 50,000), plus a brief truncation hint. PDF tool results include `pdfStatus`, `pageCount`, and selected `pages`; call with `pages:[...]` to retrieve specific pages. Encrypted, page-free, and text-free PDFs return explicit status and text with `ok:false`. Oversized responses fail with a size-limit error.
- `hermes-agent`: backend uses the configured Hermes Agent OpenAI-compatible Chat Completions API. Sybil does not add its own tool definitions for this provider; Hermes Agent handles its own tools server-side. Custom Hermes stream events are normalized away unless they produce text deltas in this SSE contract.
- `openai`: image attachments are sent as Responses `input_image` items; text attachments are sent as `input_text` items.
- `gemini`: image attachments are sent as native Gemini `inlineData` parts; text attachments are inlined as text parts.