# Troubleshooting

## Run Doctor

```sh
bin/context-kit doctor
```

This checks Docker, Compose, images, the Docker network, SearXNG health, and
docs source configuration.

## SearXNG Is Not Responding

Start it:

```sh
bin/context-kit start
```

Then check:

```sh
curl 'http://127.0.0.1:8099/search?q=test&format=json'
```

If you changed `CONTEXT_KIT_SEARXNG_PORT`, use that port instead.

## MCP Image Missing

Build default images:

```sh
bin/context-kit build
```

## Fetch URL Says Max Download Bytes Is Too Big

If `fetch_url` fails before making a network request with an MCP validation error
like `Number must be less than or equal to 26214400`, rebuild the web-search MCP
image:

```sh
bin/context-kit build
```

Context Kit patches the upstream `mcp-web-search` schema so the accepted
`max_download_bytes` value matches `CONTEXT_KIT_WEB_SEARCH_MAX_BYTES`, which
defaults to `52428800`.

## Search Fallback and Chromium

`search_web` defaults to SearXNG. If SearXNG fails or returns no results, the
upstream fallback order is DuckDuckGo, then Bing. Bing uses Chromium through
Puppeteer, so `bin/context-kit doctor` checks that the configured Chromium path
exists inside the web-search image.

Context Kit carries a source-controlled Bing provider override in
`docker/web-search/overrides/bing.js` because the upstream 1.3.0 provider can
race result rendering and return no items even when Chromium sees Bing result
cards. The override waits for result cards and decodes current Bing redirect
URLs before handing results back to the upstream fallback registry.

`fetch_url` is different: in upstream `mcp-web-search` 1.3.0, `engine=browser` is
accepted but reserved for future support. It does not currently invoke Chromium;
URL fetching uses the HTTP extractor path.

## Docs Indexing Is Slow

The first run downloads an embedding model and embeds every configured docs
section. Keep default sources small, and add profiles only when you need them.

Cloudflare and other large docs sets can take significantly longer than the
default source profile.

## Docs Tools Say Index Manager Not Initialized

If `docs_query` or `docs_refresh` returns `Index manager not initialized` while
`/status` still responds, the HTTP wrapper is up but `llms-txt-mcp` failed to
initialize its embedding model or Chroma database. Check the container logs:

```sh
docker logs context-kit-docs-mcp
```

A common cause is Docker creating the bind-mounted cache directories as `root`
before Context Kit created them as the host user. Look for errors like:

```text
Permission denied: '/models/models--BAAI--bge-small-en-v1.5'
unable to open database file
```

Fix ownership and restart:

```sh
DATA_DIR="${CONTEXT_KIT_DATA_DIR:-$HOME/.local/share/context-kit}"
sudo chown -R "$(id -u):$(id -g)" "$DATA_DIR/docs" "$DATA_DIR/models"
bin/context-kit restart
```

`bin/context-kit start` now pre-creates these directories and `doctor` reports
existing directories that are not writable by the current user. If an assistant
client reports `Session not found` after restarting `docs-mcp`, restart the
assistant so it opens a fresh Streamable HTTP MCP session.