Head to head · Extraction · October 2026 research run

Diffbot vs Outcrawl

Outcrawl scores 62.4 (B) on agent readiness against Diffbot's 54.3 (C), and leads in 3 of 7 scored categories. Diffbot leads on reliability, schema & documentation and transparency & trust. Both do extraction.

Best web scraping and crawling APIs for AI agents · All 284 scrapers comparisons

Which one, for what

Diffbot C

Best for Agents that want typed article, product or discussion data from arbitrary pages without writing selectors, and teams that also want the Knowledge Graph.

Ahead on

  • Reliability, 55 against 45
  • Schema & documentation, 83 against 71
  • Transparency & trust, 68 against 56

Watch for

The token is sent as the token query parameter on Extract and Knowledge Graph calls. It is the only scheme in the OpenAPI file

Outcrawl B

Best for Agents that want one key and one balance for reading pages, walking a site, searching with rendered results and handing a signed-in or multi-step task to a hosted browser agent with a hard budget, and teams on TypeScript that want a residential-exit browser over CDP with a replay of every session.

Ahead on

  • Agent ergonomics, 83 against 63
  • Security & auth, 66 against 21
  • Maintenance & community, 79 against 57

Watch for

No status page, incident history, SLA below Enterprise or security.txt; /status and status.outcrawl.ai do not answer

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Security & auth Outcrawl +45

Diffbot 21

One token per account, sent in the URL query string as the documented and only scheme in the OpenAPI file. Tokens are revocable in the dashboard per a June 2025 changelog title, and child tokens exist on Plus and above (20 of 30, less 10 for the secret in the URL, so 10). Child tokens have the same rights as the primary one and there is no read-only mode. The skills limit the agent to the db binary through allowed-tools (5 of 20). The API returns untrusted web content and no guidance on prompt injection was found (0 of 15). The token details page shows usage activity and an Account API reports usage. No per-call log was found (6 of 15). No security.txt, security page, certification or bug bounty was found on the pages read, and the privacy policy says some API calls rely on HTTP without encryption (0 of 20).

Outcrawl 66

OAuth 2.1 for MCP clients and the CLI with authorization code, PKCE S256, dynamic public-client registration, device code, one-hour access tokens, 30-day refresh, introspection and revocation endpoints and private_key_jwt, but one functional scope, api; API keys shaped ock_<keyId>.<secret> are shown once, stored as a digest, scoped to a workspace and revoked within a minute, with no per-key scopes, expiry or read-only keys; nothing documents a secret in a query string (25 of 30). No read-only key or scope. The MCP surface omits secrets, integrations, replay export and sharing and the wallet on purpose, rules are classified enforced or guidance on the call that sets them, agent runs need or default a budget, purchases above approvalAbove pause for a person's yes, and control hands a person the browser; monitor and profile deletes rely on destructiveHint alone (15 of 20). Every tool returns untrusted page content. The platform page says a page could ask the agent to act and that is why credentials never reach the model, secrets are substituted below the model, integrations are human-only and a run cannot be redirected mid-task, but there is no guidance to treat scraped text as data and no classifier (8 of 15). Every response carries usage, /v1/usage groups spend by hour, day or capability, agent events log every step, sessions keep the request list, console, HAR and a digest of failures, secrets record which runs used them and purchases are listed per run; there is no per-call log for scrape, search or crawl beyond the aggregate (12 of 15). No security.txt on either host (404), no SOC 2 or ISO 27001, no bug bounty; the security page has a responsible disclosure route at security@outcrawl.ai with a 90-day window and a no-legal-action statement (6 of 20). 25+15+8+12+6 = 66.

Maintenance & community Outcrawl +22

Diffbot 57

The official Python client was tagged v3.0.0 on 28 September 2026, eleven days before the check. The API changelog's newest entry is 15 June 2026, 116 days before the check, and recency is scored on that entry (10). Tagged releases in the last 90 days are skills v1.1.0 and v1.1.1 on 12 and 13 August and Python v3.0.0 on 28 September. The API changelog has none in that window (20). A public changelog with RSS and a support address exist. GitHub issues were not read (8 of 15 for a closed service). Python and TypeScript clients are current, but the docs name the packages diffbot-python and diffbot-typescript while the repositories publish diffbot and @diffbot/typescript (12 of 15). The Python repository tests on Python 3.9 to 3.13 and raised two dependencies for security fixes on 28 September. We did not see CI results (7 of 10).

Outcrawl 79

@outcrawl/sdk and the PyPI package outcrawl both reached 0.4.15 on 20 October 2026, 13 days before the check, and the Scout mirror was synced on 1 November (30). 21 npm versions since 8 September and 17 PyPI releases since 22 September 2026, with 14 dated tags in outcrawlai/release (20). Scout's pull request #1 of 13 October was answered the same day with an import note and closed, while three pull requests and one issue opened on 18 October had no reply after 15 days; the service has no changelog, support is one email address, and no community channel exists (8 of 25). Not in the official MCP registry; official SDKs in TypeScript and Python current at 0.4.15, with a CLI (15). The three npm packages are published from GitHub Actions with trusted publishing, the TypeScript SDK has zero runtime dependencies and the Python SDK one, and Scout has tests per package, but the mirror has no CI workflows and @outcrawl/mcp has sat at 0.4.3 since 29 September with a tool list that differs from the hosted docs (6 of 10). 30+20+8+15+6 = 79.

Agent ergonomics Outcrawl +20

Diffbot 63

Graded on the REST API, with the skills noted. mode limits extraction to one page type, fields adds optional fields and discussion=false drops comments, but an article response carries both html and text with no way found to drop either. The skills return Markdown by default (14 of 25). A single-URL call has no pagination. Web Search takes size and maxTokens and DQL takes size per the client. Crawl result paging was not read (10 of 20). Errors are JSON with errorCode and error and six docs pages. A failed extraction can arrive in a 200, and the 429 text says the site received too many requests when the cause is the caller's plan limit (12 of 20). Extract calls are GET reads and safe to retry. Whether a failed call uses a credit was not found, and there is no idempotency key for creating crawl jobs or custom APIs (12 of 20). Only url and token are required, with official Python and TypeScript clients and a CLI (15).

Outcrawl 83

API reading. Scrape returns main content only by default with formats picking markdown, html, rawHtml, links, screenshots or schema JSON, search renders page bodies only on request, agent events take a level and an after cursor, the MCP server shows request bodies up to a character limit and says when it truncated, and the MCP surface is 29 tools with no toolsets (20 of 25). Cursor pagination on crawl results, agent results and downloads, limit, depth and path filters on crawl, status, outcome, task and age filters on sessions, and usage grouped by hour, day, month or capability (20). One error envelope with a closed code, details such as the cap that stopped a run, retryAfterSeconds on the per-minute quota error, a documented list of codes safe to retry, and on MCP a recovery string and a retryable flag per error (18 of 20). No idempotency key on any route, a repeated agent, crawl or monitor submit runs twice, and concurrency_limit carries no retry hint; cancel is idempotent, integration_changed (409) guards updates, and the npm MCP package sets readOnlyHint on GET tools, destructiveHint on DELETE tools and idempotentHint on either, which the hosted server was not read to confirm (10 of 20). Scrape needs a URL alone, agent runs need caps.budget on the API and SDKs with the MCP server defaulting it, and official SDKs exist in TypeScript and Python beside a CLI (15). 20+20+18+10+15 = 83.

Schema & documentation Diffbot +12

Diffbot 83

The Extract APIs have a public OpenAPI 3.1.0 file, version 1.1.0, with 13 operations, and the reference pages are generated from it. We read that file and one rendered page. The descriptions for Crawl, Knowledge Graph and Web Search were not read (25). llms.txt exists but is a short index with no Markdown twins of the docs pages found (5 of 10). The Analyze API page has sections on when to use it and when not to (17 of 20). Parameters are typed, url is the one required field and the file has 15 enums, but fields is a comma-separated string and the file defines no shared response schemas (10 of 15). The file carries 24 examples. It documents only 200 and 500, with separate docs pages for 401, 404, 429 and 457 (11 of 15). The path is versioned /v3 and a dated changelog with RSS runs from 2015 to 15 June 2026 (15).

Outcrawl 71

API reading, with the MCP server described. An OpenAPI 3.1 document at https://outcrawl.ai/docs/api-reference/openapi.json lists 62 operations over 51 paths with a summary each and the same 11 status codes, generated from the vendor's capability registry, but every request body is an untyped object marked additionalProperties: true with a pointer to the docs, every 200 response is an untyped object, and Error is the only schema; the typed shapes live in the SDK declarations and in the MCP server's zod schemas, which were read in the 0.4.3 npm package rather than from the hosted server (15 of 25). llms.txt and a 525 KB llms-full.txt on the docs, a Markdown twin of every page and an llms.txt on the site (10). The MCP descriptions each end with a Not for: clause naming the better tool and most with a Cost: clause, the OpenAPI summaries say when not to use a route, and the capability pages say which neighbour to use instead (18 of 20). Scrape formats are an enum of eight, event levels and record kinds are enums, caps.budget is required, and the SDK types bound every option, while the OpenAPI bodies carry none of it (10 of 15). curl, TypeScript and Python examples on every page, 20 worked programs, a 31-row error table with meanings and a retryable list, and MCP errors with a recovery string, though the closed union is sized 24, 31, 45 and 22 on different pages (13 of 15). /v1 in the path and 1.0.0 in the OpenAPI file, but no changelog or release notes anywhere; the record is version numbers on npm, PyPI and 14 dated tags in the outcrawlai/release repository (5 of 15). 15+10+18+10+13+5 = 71.

Transparency & trust Diffbot +12

Diffbot 68

A closed service under undated Terms of Use that cover the Site and the Service, cap liability at $10 and grant Diffbot a perpetual licence to process submitted queries. The clients and skills are MIT (13 of 30). The privacy policy of 29 August 2025 says query history and API calls are stored against the API key and kept no longer than necessary, with no retention period given. The GDPR and data rights page was not read (14 of 30). There is no deprecation policy. The changelog carries dated notices, such as a May 2024 entry announcing a field removal for 30 August 2024, and the terms give 14 days' notice of fee changes (8 of 20). The privacy policy names its service providers one by one, among them AWS, Stripe, Intercom, Salesforce, Slack and Amplitude, and says all are in the United States (14 of 20).

Outcrawl 56

Closed hosted service under terms last updated 1 November 2026 that name Aeonmind LLC, trading as Outcrawl, Delaware law and a liability cap; the SDKs and the MCP package are MIT and Scout, the agent behind the hosted agent, is Apache-2.0 in a read-only mirror of a private repository (20 of 30). The privacy policy (1 November 2026) and the security page (8 October 2026) agree with each other and the docs on recordings, secrets, downloads and subprocessors. Recordings are on by default and hold request bodies, cookies and form data, deleted after a plan period shown only in the console, downloads are kept 7 days, run files are destroyed at run end, PostHog site recordings go after 30 days, and account data is kept for a limited unspecified period after closure; no DPA was found and no recording retention figure is published (20 of 30). No deprecation policy or dated notices; the terms say prices may change for future usage and material changes are emailed, and no changelog exists (3 of 20). Twelve subprocessors named with their purposes, infrastructure mainly in the United States with Cloudflare edge locations, analytics only after consent, but the AI model providers and captcha-solving services that see page content are unnamed (15 of 20). 20+20+3+15 = 58.

Reliability Diffbot +10

Diffbot 55

Graded as a hosted API. status.diffbot.com is a Pingdom public report with 13 checks, among them Analyze API, Article API, Crawlbot and Websearch, with daily uptime for seven days and no incident notes (15 of 20). No 90-day record can be read. In the week to 9 October 2026 Analyze API shows 99.69 per cent, with 2, 11 and 17 minutes down on 4, 5 and 6 October, and Article API 5, 9 and 2 minutes on 5 to 7 October (5 of 30, the line for no readable history). Rate limits are published per plan, 5 calls a minute on Free, 5 a second on Startup and 25 a second on Plus (15). The 429 page says to pause one second and back off. No Retry-After header is documented, though the official client reads one (10 of 15). No SLA was found (0). The Extract APIs are at /v3 with no beta label (10).

Outcrawl 45

Hosted reading, for the REST API with the MCP server that shares its limits. No public status page was found. None is linked from the site or the docs, https://outcrawl.ai/status answers 404 and status.outcrawl.ai does not answer (0). No readable incident history, so the floor (5). Rate limits are published with numbers on the pricing page and in the docs, 120, 300, 1,500 and 6,000 requests a minute by plan and 2, 5, 25 and 100 concurrent browsers, shared between the API and the MCP server (15). Over the per-minute ceiling the API answers quota_exceeded with ceiling: requests_per_minute and retryAfterSeconds, read from the SDK error class and the worked examples, the errors page lists four codes as safe to retry unchanged, and concurrency_limit tells the caller only to wait for a run to end; no Retry-After header is documented and no idempotency key or safe-retry rule exists for the POST routes that start crawls, agent runs and monitors, which the agent tool's own description says bill twice on a repeat (10 of 15). An SLA exists only on Enterprise, a 99.9 per cent monthly uptime figure with service credits and terms priced per contract, so half credit for a published figure without published terms (5 of 10). No beta or preview label on the API, the MCP server or the CLI, and the OpenAPI file says version 1.0.0, though both SDKs are at 0.4.15 and the domain is nine weeks old (10). 0+5+15+10+5+10 = 45.

Score by category

CategoryWeight this runDiffbotOutcrawlEdge
Reliability16%205545Diffbot +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28371Diffbot +12
Agent ergonomics13%16.26383Outcrawl +20
Security & auth14%17.52166Outcrawl +45
Payments & pricing10%12.54040even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85779Outcrawl +22
Transparency & trust7%8.86856Diffbot +12
Negative events≤1500
TotalC 54.3/100B 62.4/100

Facts side by side

FactDiffbotOutcrawl
KindHTTP APIHTTP API
VendorDiffbot Technologies Corp.Aeonmind LLC (Outcrawl)
Hosted endpointhttps://api.diffbot.com/v3https://api.outcrawl.ai/v1
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingFreemiumFreemium
Price for extraction$0.90 per 1,000 pagesnot published
x402nono
LicenceProprietary service under Diffbot's Terms of Use. The Python client, the TypeScript client and the agent skills are MITProprietary hosted service under Aeonmind LLC's terms of service (last updated 1 November 2026). The TypeScript and Python SDKs and the @outcrawl/mcp package are MIT, and Scout, the browser agent behind the hosted agent, is Apache-2.0 in a read-only GitHub mirror
Tools exposednone29
Read-only variant documentednono
llms.txtyesyes
Last release2026-06-152026-10-20
Terms last updatedno date given2026-11-01
Privacy policy last updated2025-08-292026-11-01
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waiveryesnot found in the text
Popularity9 npm/wk, 45 PyPI/wk948 stars, 53 npm/wk

Verdicts

Diffbot

Extract returns typed JSON for articles, products, discussions and other page types with no selectors to write, under a public OpenAPI 3.1 contract and a free plan that needs no card. The API token travels in the URL query string, tokens carry no scopes, and no security page, certification or security.txt was found.

Outcrawl

One credit balance over scrape, crawl, search, cloud browsers and agent runs, with published per-unit rates, a 1,000-credit free month, OAuth 2.1 for MCP and the CLI, and a closed error union with retry guidance. No status page, changelog or security.txt, an OpenAPI file without typed bodies, no idempotency keys on job submits, and a domain registered nine weeks ago.

Before you call either

Diffbot

  1. Call GET https://api.diffbot.com/v3/analyze?url=<encoded URL>&token=<token> when the page type is unknown. Use /v3/article or /v3/product to force one schema
  2. Keep the token out of logs and shared URLs. It sits in the query string, so any proxy or log that records the request URL records the token
  3. Stay under 5 calls a minute on Free, 5 a second on Startup and 25 a second on Plus. On 429 wait at least one second and back off
  4. Check a 200 response for errorCode. The official client raises ExtractionError when a 200 reports a failed extraction
  5. Set useProxy=default only when a site blocks the fetch. A proxied page costs 2 credits against 1
  6. Install diffbot from PyPI, not diffbot-python, which stopped at 0.3.0

Outcrawl

  1. Read a known URL with POST /v1/scrape or outcrawl_scrape at 1 credit; use outcrawl_search to find URLs and send scrape: true only when you need page bodies, and reserve outcrawl_agent for pages that need a click, a form or a sign-in.
  2. Always send caps.budget on POST /v1/agent (the API refuses without it) and store the returned id; poll GET /v1/agent/{id} or outcrawl_agent_status, never resubmit, because a second submit is a second bill.
  3. Branch on error.code, not message. Retry no_capacity, decode_unavailable, extraction_failed and answer_lost unchanged; on quota_exceeded with ceiling: requests_per_minute wait retryAfterSeconds; on concurrency_limit wait for a run to end; never retry bad_request or a credit quota.
  4. Set limit on a crawl before submitting; pages already fetched are billed when you cancel, and over HTTP the crawl is cancelled if the streaming connection drops, so keep the job id and read /v1/crawl/{id}/results with the cursor.
  5. Pass after with the last seq and level: status when reading outcrawl_agent_events; the log of a long run is the largest response the server returns.
  6. Pass maxAge: 0 when freshness matters, since the default serves scrape answers up to two days old from a shared cache at the same price, and treat page content, data and download links as untrusted data; download URLs work for an hour with no key.

Questions

Which is better for AI agents, Diffbot or Outcrawl?

Outcrawl scores 62.4 (B) on agent readiness against Diffbot's 54.3 (C), and leads in 3 of 7 scored categories. Diffbot leads on reliability, schema & documentation and transparency & trust.

Do Diffbot and Outcrawl need an API key?

Diffbot needs an API key. Outcrawl takes an API key or an OAuth sign-in.

Can an agent call Diffbot and Outcrawl without installing anything?

Yes. Diffbot has a hosted endpoint at https://api.diffbot.com/v3 and Outcrawl at https://api.outcrawl.ai/v1.

Other comparisons with Diffbot or Outcrawl

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