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Retrieval, RAG and grounding data

Grounding APIs vs direct content licenses vs licensed crawling

Quick answer

A grounding API is the fastest way to give an assistant fresh public web content, but display, caching and retention rights depend on that provider's terms. A direct content license costs more effort and gives you the clearest rights, plus access to corpora no API exposes. Licensed crawling, through agent paywalls, pay-per-crawl gateways and machine-readable license terms, sits in between: standardized terms for each publisher, with metering. Many production assistants combine two of the three routes.

By SourceX Editorial · Updated

What each route actually buys you

Each route buys a different bundle of access, rights and operational control, so compare them on rights first and latency second. Teams that pick on latency alone tend to discover the rights gap during legal review or after launch.

Grounding or search APIs. A provider runs its own index and returns ranked results, snippets or full-text extracts for each query. You.com, for example, markets a grounding API built for LLM applications [1]. You pay for each call or by subscription. Your rights come from the API terms of service, which govern how long you may store results, whether you may show snippets verbatim, and whether outputs can feed fine-tuning.

Direct content licenses. You sign with the rights holder, such as a publisher, a database owner or a company with proprietary documents, and receive a feed, bulk export or private endpoint. Contract clauses set the scope: grounding versus training, display length, attribution, caching, term and deletion. Industry reporting describes publishers moving from one-time training payments toward ongoing, usage-based grounding deals [8].

Licensed crawling. Your agent or crawler fetches pages directly from publisher sites, but access is gated by a commercial layer. TollBit sells a bot and agent paywall with standardized terms for RAG access [3]. Cloudflare introduced pay-per-crawl, which uses HTTP 402 responses and a crawler price header [4]. Really Simple Licensing (RSL) gives publishers a machine-readable way to publish license terms for AI crawlers [5].

Rights clarity: where each route leaves gaps

Direct licenses give the clearest rights because you negotiate them, and grounding APIs give the least visible ones because the underlying content is not licensed to you by its owner. A search API vendor grants you rights to its service output. Whether it holds rights from every publisher in its index is usually not stated. News API comparisons tend to focus on freshness, formats and deduplication, while licensing and display rights are often left undocumented [2].

Grounding and training are separate permissions. Licensing practitioners note that a training license does not authorize live grounding, and a grounding agreement does not grant the right to train on the corpus [9]. If you plan to distill retrieved content into a fine-tune later, that must be written down. Our guide to grounding licenses versus training licenses covers the clause language.

Licensed crawling gives uniform terms for each publisher, but the terms are set by the publisher or gateway, not negotiated by you. Also keep in mind that robots.txt under RFC 9309 is an access convention, not a license [10]. The IETF AI preferences vocabulary is still a draft as of October 2026 [11]. A permissive robots.txt is therefore not evidence of display or reuse rights.

Freshness, coverage and control over updates

Grounding APIs win on breadth and freshness, direct licenses win on depth and update control, and licensed crawling depends on how many of your target sources have joined a gateway. Run each candidate against your own logged queries, not the vendor's demo set. Look at answer coverage, time from publication to retrieval, duplicate rate and extraction quality.

Control over updates matters more than buyers expect. With an API, the provider can change ranking, drop a source or change its terms on its own schedule, and you inherit the change silently. A direct license can require a change feed, corrections and takedown notices, and versioned snapshots that let you reproduce an answer. Licensed crawling leaves the update cadence to your crawler, but you only see what the publisher's site renders.

Direct licenses are the only route to non-public material. Support histories, product manuals, engineering records and internal documents sit behind no API and no paywall; buyers who need such data from US companies can describe it to SourceX. For those corpora see product manuals and service documentation as RAG corpora and multi-source enterprise search corpora.

Cost model and metering

Grounding APIs bill per query, licensed crawling bills per crawl or per access event, and direct licenses are usually priced per deal, with fees that can be fixed, usage-based or both. The unit matters because assistant traffic is spiky and agents can make many retrieval calls per user turn. A per-call price that looks cheap in a pilot can dominate cost once an agent loop issues ten searches per question.

Usage-based direct licenses need reporting you can produce. Publishers that move to grounding deals price on how often content is retrieved or displayed [8]. Before signing, confirm that your retrieval logs can attribute each retrieved chunk to a licensed source ID. The patterns are in our pages on usage-based pricing for RAG content and usage reporting and metering.

Decision table for choosing a grounding route

The table below lists typical differences between routes. Any single contract can override them, so treat the cells as questions to confirm.

Illustrative example: invented to show structure; it does not describe an available dataset.

CriterionGrounding / search APIDirect content licenseLicensed crawling (paywall, pay-per-crawl, RSL)
Who grants rightsAPI provider, via ToSRights holder, via negotiated contractPublisher terms, often enforced by a gateway
Rights visibilityLow: upstream licenses rarely disclosedHigh: scope written per clauseMedium: standardized but non-negotiable
Grounding vs training scopeUsually grounding/display only; check fine-tune clauseWhatever you negotiateUsually access-scoped; check for training terms
FreshnessHigh for public web and newsDepends on feed SLA in the contractAs fresh as your crawl schedule
CoverageBroad public webNarrow, deep, can include non-public dataOnly participating publishers
Caching and retentionOften short windows set in ToSNegotiated, including deletion on terminationSet by publisher terms
Cost modelPer call or tierFixed, usage-based or hybridPer crawl or per access
ExclusivityNoneNegotiableNone
Control over updatesProvider-controlledContractual change feed and takedownsYour crawler; publisher controls the page
Time to first answerDaysWeeks to monthsDays, if sources participate

Where protocol standards are heading

Industry protocols are trying to make licensed crawling and direct licenses interoperable, but as of October 2026 none is settled. IAB Tech Lab formed its CoMP working group in August 2025, after starting the work as the LLM Content Ingest API [6]. It released CoMP as a draft specification in March 2026 [7]. CoMP is meant to work across both direct licensing arrangements and third-party marketplaces [6].

For buyers, the practical point is to keep source identifiers, license references and usage events in your retrieval metadata now. Then you can map them to whichever protocol wins. See our comparison of AI usage preference signals for the opt-out side of the same stack.

If you also provide a general-purpose AI model on the EU market (including by modifying one substantially enough to become its provider), Article 53(1)(c) of the AI Act has required since 2 August 2025 a copyright policy that identifies and complies with text and data mining rights reservations under Article 4(3) of the DSM Directive [12]. Crawled grounding content that later enters a training pipeline falls under that policy, so tag its provenance at ingestion.

Buyer checklist before you commit to a route

Before committing, write down the rights, data and operational answers for each candidate source. The checklist below is a request template you can send to an API vendor, a publisher or a gateway.

Illustrative example: invented to show structure; it does not describe an available dataset.

  • Use scope: Is the permission grounding only, display, training, fine-tuning or evaluation? Is it internal or customer-facing (see internal vs customer-facing licensing)?
  • Display limits: What is the maximum verbatim excerpt length, and are attribution and link-back required?
  • Caching: How long may you keep retrieved text, embeddings and vector index entries, and what happens to them at termination?
  • Upstream rights: For APIs, does the provider warrant that it may sublicense the content it returns?
  • Third-party models: May content be sent to an external model API as context (sublicense and processor terms)?
  • Freshness SLA: What is the time from publication to availability, and how are corrections and takedowns delivered?
  • Metering: Which events are billable (crawl, retrieval, display), and who keeps the authoritative log?
  • Exit: What deletion evidence is required when the license ends?

Getting proprietary grounding content from US companies

If the corpus your assistant needs is operational data held by US companies, such as support histories, engineering records or documents, SourceX sources it on request and manages the licensing agreement and any ongoing purchases. Every dataset is rights-reviewed and delivered under a license that defines records, uses, term and delivery, and nothing is contracted until the supplying company agrees. Describe the content and uses you need at SourceX for buyers.

This page is general information, not legal advice. Confirm requirements with counsel for your jurisdiction and use case.

Related: RAG content licensing guide, Licensed vs synthetic vs scraped AI training data, enterprise data transaction layer.

Frequently asked questions

Can I use a search API's results to fine-tune my model?

Only if the API terms allow it, and many grounding API terms are written for display, not training. Separately, the provider may not hold training rights from the original publishers. Treat fine-tuning on API output as a separate permission to confirm in writing [9].

Is licensed crawling the same as respecting robots.txt?

No. Robots.txt only tells crawlers which paths they may fetch [10]. Licensed crawling adds commercial terms and payment, for example through an HTTP 402 response from a pay-per-crawl gateway [4] or machine-readable RSL terms [5].

When is a direct license worth the negotiation time?

A direct license pays off when the content is proprietary, when you need exclusivity, versioned snapshots or deletion guarantees, or when answers are customer-facing and an attribution failure would be visible. It is also the only route to non-public operational data.

Sources

  1. You.com, "Grounding API" (2026). https://you.com/resources/grounding-api
  2. Firecrawl, "Best news API". https://firecrawl.dev/blog/best-news-api
  3. TollBit, "Bot & agent paywall". https://tollbit.com/licensed-rag/
  4. Cloudflare, "Introducing pay per crawl" (2025). https://blog.cloudflare.com/introducing-pay-per-crawl/
  5. RSL Collective, "RSL Standard". https://rslstandard.org/press/rsl-standard
  6. PPC Land, "IAB Tech Lab's CoMP spec forces LLMs to pay before they crawl" (2026). https://ppc.land/iab-tech-labs-comp-spec-forces-llms-to-pay-before-they-crawl/
  7. IAB Tech Lab via PR Newswire, "IAB Tech Lab Announces CoMP Framework to Ensure LLMs Have Commercial Agreements with Publishers Before Content Crawling" (2026). https://tools.prnewswire.com/en-us/live/20823/release/20260310EN06615
  8. Digiday, "WTF is AI 'grounding' licensing, and why do publishers say it matters over training deals?". https://digiday.com/media/wtf-is-ai-grounding-licensing-and-why-do-publishers-say-it-matters-over-training-deals/
  9. Newstex, "Editorial content licensing for AI training and grounding". https://www.newstex.com/blog/editorial-content-licensing-for-ai-training-and-grounding
  10. IETF, "RFC 9309: Robots Exclusion Protocol" (2022). https://datatracker.ietf.org/doc/html/rfc9309
  11. IETF AI Preferences Working Group, "draft-ietf-aipref-vocab-08". https://datatracker.ietf.org/doc/html/draft-ietf-aipref-vocab-08
  12. European Commission, AI Act Service Desk, "AI Act Article 53: Obligations for providers of general-purpose AI models". https://ai-act-service-desk.ec.europa.eu/en/ai-act/article-53

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