CRW Web Scraper
OCI · GHCR.IO/FASTCRW/CRW
Open-source web scraper for AI agents with scrape, crawl, and map tools
Available components
Last scanned (7 hours ago)
Scores higher than 68% of OCI servers
Category Web Scraping
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security0
- No malware scan is available for this kind of package: the supply-chain vendors we use do not cover it. This is a permanent gap in our coverage, not a finding about the package.Unverified
- Known CVEs could not be checked: this artifact ships no SBOM or dependency manifest, so there is no dependency list to read.Unverified
- Install-script risk not yet assessed.Unverified
- Dependency health could not be checked: this artifact ships no SBOM or dependency manifest, so there is no dependency list to read.Unverified
Provenance & Transparency48
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (AGPL-3.0).Pass
- Actively maintained (last published 16 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability73
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1138 tokens (~142/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management57
- Stability observed for 17 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage98
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 95% of tool parameters carry a description.Partial
- Structured output schemas are declared (38% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 +6
- Stability: unverified → 0.43 ▲ functional
- 30 Sept 26 39
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Analysed oci/ghcr.io/fastcrw/crw@latest
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | oci |
| Reason | No attestation published |
Background: How many MCP packages publish verified provenance →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
crw_cancel_extract Cancel extract job ~46
Request cancellation of an extract job. Returns the canonical status; cancelling remains non-terminal until the claimed URL settles.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Extract job id from crw_extract |
| Name | Type | Req | Description |
|---|---|---|---|
| creditsUsed | integer | – | – |
| error | string | – | – |
| expiresAt | string | yes | – |
| id | string | yes | – |
| results | array | yes | – |
| status | string | yes | – |
| success | boolean | yes | – |
| tokensUsed | integer | yes | – |
No examples provided.
crw_check_crawl_status Check crawl status ~62
Poll an async crawl job and retrieve its pages.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Crawl job id from crw_crawl |
| maxLength | integer | – | Max chars per page content field; 0 = unbounded (default ~15000) |
No output schema declared.
No examples provided.
crw_check_extract_status Check extract job status ~44
Poll an extract job; returns status and, when complete, a per-URL results array.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Extract job id from crw_extract |
| Name | Type | Req | Description |
|---|---|---|---|
| creditsUsed | integer | – | – |
| error | string | – | – |
| expiresAt | string | yes | – |
| id | string | yes | – |
| results | array | yes | – |
| status | string | yes | – |
| success | boolean | yes | – |
| tokensUsed | integer | yes | – |
No examples provided.
crw_crawl Crawl site ~219
Start an async site crawl; returns a job id to poll with crw_check_crawl_status.
| Name | Type | Req | Description |
|---|---|---|---|
| jsonSchema | object | – | Optional. A JSON Schema (draft 2020-12) describing fields to extract from each page via an LLM, e.g. {"type":"object","properties":{"title":{"type":"string"}}}. Free-form object. Omit to crawl withou… |
| maxDepth | integer | – | Max crawl depth (default 2) |
| maxPages | integer | – | Max pages to crawl (default 10) |
| renderJs | boolean | – | Force JS render (true), HTTP-only (false), omit = auto |
| renderer | string | – | Pin renderer; browser tiers imply renderJs:true (default auto). 'camoufox' needs the opt-in tier configured. 'impersonated-http' is JS-less Chrome-TLS impersonation, never renderJs. |
| url | string | yes | Starting URL |
| waitFor | integer | – | Ms to wait after JS render per page |
No output schema declared.
No examples provided.
crw_extract Extract structured data ~158
Extract structured JSON from URLs via a prompt and/or JSON schema. Async job — poll crw_check_extract_status with the returned id. Needs an LLM.
| Name | Type | Req | Description |
|---|---|---|---|
| basis | boolean | – | Return per-field evidence: each top-level scalar property comes back with a source url, verbatim excerpt and honest status (supported/unverified/unsupported/notFound). Requires schema. |
| llmApiKey | string | – | BYOK LLM API key |
| llmModel | string | – | – |
| llmProvider | string | – | – |
| prompt | string | – | Free-text extraction objective (required unless schema is given) |
| schema | object | – | JSON Schema constraining the extracted output |
| urls | array | yes | URLs to extract from |
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
| status | string | yes | – |
| success | boolean | yes | – |
| urls | integer | yes | – |
No examples provided.
crw_map Map site URLs ~137
Discover URLs on a site via sitemap and/or a short crawl. Returns a URL list only, no page content.
| Name | Type | Req | Description |
|---|---|---|---|
| crawlFallback | boolean | – | Supplement sitemap with a short BFS crawl (default true; false = sitemap-only) |
| limit | integer | – | Max URLs to discover AND return; 0 = unbounded (default 100). Raise it (e.g. 50000) to pull deep/large sitemaps. |
| maxDepth | integer | – | Max discovery depth (default 2) |
| url | string | yes | URL to map |
| useSitemap | boolean | – | Use sitemap.xml (default true) |
No output schema declared.
No examples provided.
crw_parse_file Parse PDF ~176
Parse a local PDF (base64 in contentBase64) to markdown. No OCR: scanned PDFs return empty markdown with a warning.
| Name | Type | Req | Description |
|---|---|---|---|
| contentBase64 | string | yes | Base64-encoded PDF bytes |
| filename | string | – | Original filename (optional) |
| formats | array | – | Output formats (default ["markdown"]); json/summary need a server LLM |
| jsonSchema | object | – | Optional. A JSON Schema (draft 2020-12) describing fields to extract when formats includes "json", e.g. {"type":"object","properties":{"title":{"type":"string"}}}. Free-form object. |
| maxLength | integer | – | Max chars per content field; 0 = unbounded (default ~15000) |
| parsers | array | – | Parsers to apply (default ["pdf"]) |
No output schema declared.
No examples provided.
crw_scrape Scrape URL ~201
Scrape one URL to markdown, HTML, or links.
| Name | Type | Req | Description |
|---|---|---|---|
| excludeTags | array | – | CSS selectors to exclude |
| formats | array | – | Output formats (default ["markdown"]) |
| includeTags | array | – | CSS selectors to include |
| maxLength | integer | – | Max chars per content field; 0 = unbounded (default ~15000) |
| onlyMainContent | boolean | – | Strip nav/footer; main content only (default true) |
| renderJs | boolean | – | Force JS render (true), HTTP-only (false), omit = auto |
| renderer | string | – | Pin renderer; browser tiers imply renderJs:true (default auto). 'camoufox' needs the opt-in tier configured. 'impersonated-http' is JS-less Chrome-TLS impersonation, never renderJs. |
| url | string | yes | URL to scrape |
| waitFor | integer | – | Ms to wait after JS render for late content |
No output schema declared.
No examples provided.
How do I install the CRW Web Scraper MCP server?
CRW Web Scraper runs locally as a container image, launched with docker run --rm -i ghcr.io/fastcrw/crw:latest. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.
oci · ghcr.io/fastcrw/crw
claude mcp add fastcrw-crw -- docker run --rm -i ghcr.io/fastcrw/crw:latest
What is the CRW Web Scraper MCP server?
CRW Web Scraper is an MCP server listed in the public MCP registry as io.github.fastcrw/crw. Open-source web scraper for AI agents with scrape, crawl, and map tools. This page covers its container image (ghcr.io/fastcrw/crw).
Is the CRW Web Scraper MCP server safe to use?
CRW Web Scraper scores 47 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the CRW Web Scraper MCP server expose?
CRW Web Scraper exposes 8 tools: crw_scrape, crw_crawl, crw_check_crawl_status, crw_map, crw_extract, and 3 more. Their descriptions and schemas cost roughly 1,043 tokens of context every time the server is loaded.
Is the CRW Web Scraper MCP server still maintained?
CRW Web Scraper is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the CRW Web Scraper MCP server under?
CRW Web Scraper declares the AGPL-3.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.