The web_crawl_tool() function was an orphan — no model schema registered
it, no skill or CLI command called it, and the agent had no way to invoke
it. PR #32608 proposed wiring it up as a model-callable tool; we've
decided not to expose crawl as a separate capability since web_search +
web_extract cover the use cases we want models to have.
Removed:
- tools/web_tools.py: web_crawl_tool() (~230 LOC)
- plugins/web/firecrawl/provider.py: supports_crawl() + crawl()
- plugins/web/tavily/provider.py: supports_crawl() + crawl()
- plugins/web/xai/provider.py: supports_crawl() override
- agent/web_search_provider.py: supports_crawl() + crawl() ABC methods
- agent/web_search_registry.py: get_active_crawl_provider() +
the 'crawl' branch in _resolve()
- agent/display.py: web_crawl tool-progress rendering
- hermes_cli/config.py: 'web_crawl' from TAVILY_API_KEY.tools
- tools/website_policy.py: stale comment reference
- Tests: removed TestWebCrawlTavily class, the two website-policy
web_crawl tests, the searxng/ddgs/brave-free crawl-error tests,
the integration test_web_crawl method, and the
test_unconfigured_crawl_emits_top_level_error test. Trimmed the
capability-flag parametrize list and the WebSearchProvider ABC
conformance tests.
- Docs: trimmed the Crawl column from capability tables in both EN
and zh-Hans, updated the developer-guide ABC table.
Net: 25 files, +115/-1067.
Closes#33762 (the schema-text bug only existed if #32608 landed).
Supersedes #32608.
Self-review of the plugin migration surfaced one warning and a handful of
doc/dead-code cleanups. None affect production behaviour through the main
dispatcher (which always calls `tools.web_tools._get_backend()` first and
preserves the full 7-provider walk), but direct callers of
`agent.web_search_registry.get_active_*_provider()` previously diverged
from the legacy order and could return `None` for users with credentials
but no explicit `web.backend` config key.
Changes
-------
1. `_LEGACY_PREFERENCE` was shipped as a 4-tuple
`("brave-free", "firecrawl", "searxng", "ddgs")` while the PR
description and the legacy `_get_backend()` candidate order both
call for the 7-tuple
`(firecrawl, parallel, tavily, exa, searxng, brave-free, ddgs)`.
Replaced with the 7-tuple. Verified empirically: with TAVILY+EXA keys
and no config, `get_active_search_provider()` now returns tavily
(was None); with EXA+PARALLEL it returns parallel (was None); with
BRAVE+FIRECRAWL it returns firecrawl (was brave-free).
2. `agent/web_search_registry.py` — module docstring, `_resolve` step-3
docstring, and inline comment all listed the old 4-tuple and claimed
"brave-free first because it was the shipped default". The legacy
default is `"firecrawl"`. Rewritten to match the new ordering and
reference `tools.web_tools._get_backend()` as the source of truth.
3. `agent/web_search_registry.py` — `get_active_crawl_provider`
docstring said "only Tavily implements it among built-in providers".
Firecrawl also advertises `supports_crawl=True` after the previous
commit. Updated to "Tavily and Firecrawl".
4. `plugins/web/tavily/provider.py` — module docstring said "Tavily is
the only built-in backend that natively crawls". Updated.
5. `agent/web_search_provider.py` — ABC docstring mentioned only
`search` / `extract` capabilities. Added `crawl` for accuracy.
6. `plugins/web/{firecrawl,parallel,exa}/provider.py` — dead plugin-level
cache globals (`_firecrawl_client`, `_parallel_client`,
`_async_parallel_client`, `_exa_client`) were declared but never read
(all reads/writes go through `_wt.*` per the `extracting-inline-
helpers-to-plugins` recipe). Removed the dead declarations; the
reset-for-tests helpers in firecrawl + parallel now clear the
canonical `_wt._<name>` slots, matching the pattern exa already used.
Tests
-----
218/218 web-targeted tests still pass (no test changes needed). 4910/4910
in `tests/tools/` still green.
Migrates Tavily from inline _tavily_request() / _normalize_tavily_*
helpers in tools/web_tools.py to a bundled plugin at plugins/web/tavily/.
First plugin in the codebase to advertise supports_crawl=True. Tavily is
unique among built-in backends in offering a native /crawl endpoint that
walks linked pages from a seed URL with optional natural-language
instructions and depth ("basic" or "advanced").
Capabilities:
- supports_search() -> True (Tavily /search)
- supports_extract() -> True (Tavily /extract)
- supports_crawl() -> True (Tavily /crawl)
All sync (httpx.post under the hood).
The crawl method accepts forward-compat kwargs (instructions, depth,
limit) and is gated against unsafe URLs/policy by the dispatcher in
web_crawl_tool — exactly as before.
Behavior preserved:
- TAVILY_API_KEY required (ValueError → typed error response)
- TAVILY_BASE_URL env override honored
- /crawl requires both body auth AND Bearer header — preserved
- failed_results[] and failed_urls[] response keys mapped to per-URL
items with error fields rather than raising
- max_results capped at 20 server-side
Adds "tavily" to _WEB_PLUGIN_SKIPLIST.
The legacy inline _tavily_request / _normalize_tavily_search_results /
_normalize_tavily_documents / _TAVILY_BASE_URL in tools/web_tools.py are
NOT deleted yet — search/extract dispatch and the entire web_crawl_tool
function still reference them. They go away when those dispatchers are
cut over to the registry.
E2E verified:
- Tavily registers with all 3 capabilities
- Provider list now: brave-free, ddgs, exa, parallel, searxng, tavily
