fix(templates): search templates stop probing with searches; add firecrawl
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Readiness probes ran real searches every interval: searxng's searxng_web_search probe fanned a query out to every engine 1,440 times a day, billing API-key engines (braveapi, kagi), and duckduckgo's `search` probe scraped DuckDuckGo from the same IP agents search from. - searxng: probe searxng_instance_info, which reads /config only - duckduckgo: probe fetch_content on example.com every 300s - firecrawl (new): firecrawl-mcp against a self-hosted or cloud Firecrawl, for reading pages as main-content markdown; probe firecrawl_scrape on example.com every 300s Every probe still names a readiness tool, as templates.test.ts requires; each was run against the real package before being written down. docs/web-search.md now pairs searxng (search) with firecrawl (reading) and says why duckduckgo does not hold up under agent traffic. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JPjtnE6Gd343oRNtMU9Bcd
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16
README.md
16
README.md
@@ -869,17 +869,21 @@ Notes:
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### Web search and docs lookup
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The `duckduckgo`, `searxng` and `docs-mcp` templates give an agent web search and
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version-pinned library documentation. All are self-hosted and none needs an API key.
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`duckduckgo` needs no backing service at all:
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The `searxng`, `firecrawl`, `duckduckgo` and `docs-mcp` templates give an agent web
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search, page reading and version-pinned library documentation. All can run
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self-hosted without an API key. For agents, pair `searxng` (search) with `firecrawl`
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(page reading); `duckduckgo` needs no backing service but scrapes from your IP and
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gets CAPTCHA-blocked under agent traffic:
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```bash
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mcpctl create server websearch --from-template duckduckgo
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mcpctl create server searxng --from-template searxng --env SEARXNG_URL=http://searxng:8080
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mcpctl create server firecrawl --from-template firecrawl --env FIRECRAWL_API_URL=http://firecrawl-api:3002
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```
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See [docs/web-search.md](docs/web-search.md) for the SearXNG engine setup (including
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the `json` format setting, without which every search silently returns nothing) and
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the `docs-mcp` index-persistence caveat.
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the `json` format setting, without which every search silently returns nothing), why
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none of the search templates probes with a search, and the `docs-mcp`
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index-persistence caveat.
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## Gated Sessions
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@@ -1,14 +1,19 @@
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# Web search and documentation lookup
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Three templates. All self-hosted, none needs an API key or a vendor account, and
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all three are deployed by mcpctl like any other server.
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Four templates. All can run self-hosted without an API key or a vendor account,
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and all are deployed by mcpctl like any other server.
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| Template | Package / image | Needs |
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|---|---|---|
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| `duckduckgo` | `duckduckgo-mcp-server` (python) | nothing |
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| `searxng` | `mcp-searxng` (node) | a SearXNG instance |
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| `firecrawl` | `firecrawl-mcp` (node) | a Firecrawl instance |
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| `duckduckgo` | `duckduckgo-mcp-server` (python) | nothing |
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| `docs-mcp` | `ghcr.io/arabold/docs-mcp-server` | nothing |
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For agent use, pair `searxng` (finding pages) with `firecrawl` (reading them).
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`duckduckgo` does both with no infrastructure, but it scrapes from your IP and
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does not hold up under agent traffic — see below.
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Search and docs are different jobs, not competing options. A search engine will
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hand you a 2023 blog post with a stale method signature; a docs index cannot
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tell you why a daemon is crash-looping. Attach both to a project that does real
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@@ -17,23 +22,31 @@ engineering work.
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`docs-mcp` is the open-source replacement for Context7 / Ref.tools — same job,
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but the index lives on your infrastructure and can include private repos.
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## Start here: `duckduckgo`
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## No infrastructure: `duckduckgo`
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The only one with no infrastructure behind it. It scrapes DuckDuckGo's HTML
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endpoint directly, so there is no engine to run and no key to hold.
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The only one with nothing behind it. It scrapes DuckDuckGo's HTML endpoint
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directly, so there is no engine to run and no key to hold.
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```bash
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mcpctl create server websearch --from-template duckduckgo --env DDG_SAFE_SEARCH=OFF
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mcpctl get instances | grep websearch # RUNNING / healthy within ~a minute
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mcpctl get instances | grep websearch # RUNNING / healthy within a few minutes
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```
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Tools: `search` (`query`, `max_results`, `region`) and `fetch_content` (`url`,
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`start_index`, `max_length`) for pulling a result as markdown.
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The tradeoff is honest: scraping has no SLA. DuckDuckGo can change its markup or
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rate-limit you, and the server caps itself at 30 searches/min. Set
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`DDG_SEARCH_BACKEND=curl` if bot checks start biting. When it becomes a problem,
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move to `searxng`.
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Fine for a person searching occasionally; not for agents. Scraping has no SLA,
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and agents search in bursts — one question becomes several parallel queries.
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From a single home or office IP, DuckDuckGo starts answering CAPTCHA and stays
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that way, and every further request from that IP deepens the block, including
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for a SearXNG instance sharing the address. `DDG_SEARCH_BACKEND=curl` survives
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some bot checks but does not change that. Use `searxng` for agent search.
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The readiness probe is `fetch_content` on `https://example.com` every 300s, not
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`search`. A search probe is a DuckDuckGo scrape every interval — 1,440 a day at
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the 60s default — from the same IP your agents depend on. The trade: `healthy`
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proves the process and its outbound fetch work, not that DuckDuckGo is still
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answering you.
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## Better results: `searxng`
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@@ -79,6 +92,43 @@ fails: nearly all of them leave the JSON API off.
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The compose healthcheck probes `format=json` specifically, so a misconfigured
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instance shows up as unhealthy rather than as silently empty search results.
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### Probe and engines
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The template's readiness probe is `searxng_instance_info`, which reads the
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instance's `/config`: a pass proves SearXNG answers without sending a query to
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any engine. Do not probe with `searxng_web_search` — every interval becomes a
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real search fanned out to every engine, which bills API-key engines and feeds
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the IP blocks on scraping ones.
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Those blocks are the long-term problem. Scraping engines (duckduckgo, google,
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startpage, qwant) CAPTCHA a single IP under agent traffic. SearXNG also ships
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API-key engines — `braveapi`, `kagi` — that are not subject to IP reputation;
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enable at least one if agents are the main caller, and cap its spend in the
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vendor's dashboard.
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## Reading pages: `firecrawl`
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`firecrawl` is the reader to pair with `searxng`: give it a URL, get the page's
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main content as markdown. Firecrawl renders pages in a real browser, so
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JavaScript-heavy pages work where a plain fetch comes back empty.
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```bash
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mcpctl create server firecrawl --from-template firecrawl \
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--env FIRECRAWL_API_URL=http://firecrawl-api:3002
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```
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Point it at a self-hosted Firecrawl (no key needed) or leave `FIRECRAWL_API_URL`
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unset and set `FIRECRAWL_API_KEY` for Firecrawl's cloud. The tool agents want is
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`firecrawl_scrape` with `formats: ["markdown"]` and `onlyMainContent: true`.
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- **Egress port.** Self-hosted Firecrawl listens on `:3002`, outside the default
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80/443 server egress, so declare it or every call times out.
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- **Search stays off** unless the Firecrawl instance has `SEARXNG_ENDPOINT`
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set, so `firecrawl_search` cannot quietly become a second scraper. Use the
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`searxng` template for search.
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- **Probe:** `firecrawl_scrape` of `https://example.com` every 300s. It is a
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real outbound fetch, hence the longer interval.
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## Documentation: `docs-mcp`
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```bash
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@@ -5,11 +5,17 @@ packageName: "duckduckgo-mcp-server"
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runtime: python
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transport: STDIO
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repositoryUrl: https://github.com/nickclyde/duckduckgo-mcp-server
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# Readiness fetches a tiny static page instead of searching. A `search` probe is
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# a DuckDuckGo scrape every interval (1,440/day at 60s) from the same IP agents
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# search from, which is how that IP ends up answering CAPTCHA. This proves the
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# process and its outbound fetch path work, not that DuckDuckGo is answering.
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healthCheck:
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tool: search
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tool: fetch_content
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arguments:
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query: "mcp"
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max_results: 1
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url: "https://example.com"
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max_length: 500
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intervalSeconds: 300
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timeoutSeconds: 20
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env:
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- name: DDG_SAFE_SEARCH
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description: Result filtering — STRICT, MODERATE or OFF
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28
templates/firecrawl.yaml
Normal file
28
templates/firecrawl.yaml
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@@ -0,0 +1,28 @@
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name: firecrawl
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version: "1.0.0"
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description: Firecrawl MCP server for reading web pages as main-content markdown, JS-rendered pages included
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packageName: "firecrawl-mcp"
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runtime: node
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transport: STDIO
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repositoryUrl: https://github.com/firecrawl/firecrawl-mcp-server
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# Readiness scrapes a tiny static page: a pass proves the Firecrawl API answers
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# and can fetch the web, without a search. Firecrawl's own search needs a
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# SearXNG endpoint on self-hosted instances; use the searxng template for
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# search. 300s because each probe is a real outbound fetch.
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healthCheck:
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tool: firecrawl_scrape
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arguments:
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url: "https://example.com"
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formats: ["markdown"]
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onlyMainContent: true
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intervalSeconds: 300
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timeoutSeconds: 60
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env:
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- name: FIRECRAWL_API_URL
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description: >-
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Self-hosted Firecrawl API base URL (e.g. http://firecrawl-api:3002). Leave
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unset only when using Firecrawl's cloud with FIRECRAWL_API_KEY.
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required: false
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- name: FIRECRAWL_API_KEY
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description: API key — required for Firecrawl's cloud, optional for a self-hosted instance
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required: false
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@@ -4,10 +4,12 @@ description: SearXNG MCP server for private web search and URL-to-markdown readi
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packageName: "mcp-searxng"
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transport: STDIO
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repositoryUrl: https://github.com/ihor-sokoliuk/mcp-searxng
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# Readiness reads SearXNG's /config, which proves the instance answers without
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# fanning out to its engines. A searxng_web_search probe is a real search every
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# interval (1,440/day at 60s): it burns API-key engines (braveapi, kagi) and
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# feeds the IP blocks scraping engines put on the instance.
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healthCheck:
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tool: searxng_web_search
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arguments:
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query: "mcp"
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tool: searxng_instance_info
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env:
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- name: SEARXNG_URL
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description: >-
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