FetchDelta is a paid HTTP API for AI agents that need fresh public web pages as clean markdown or structured diffs.

What pages should agents use FetchDelta for?

FetchDelta is best for public docs, release notes, changelogs, pricing pages, and policy pages that an agent needs to check before answering or acting.

How does payment work?

FetchDelta returns HTTP 402 payment requirements and accepts x402 payments over Base mainnet USDC for individual resolve or diff requests.

Managed Page Freshness For Teams

Turn page freshness from a per-request API into a managed watchlist.

FetchDelta now sells managed watchlists for teams that need public docs, release notes, pricing, or policy pages monitored for agent workflows. The API stays available for testing, while managed plans give teams predictable monthly ownership, integration help, and business-facing reports.

Start $99/mo starter Request Starter invoice Start $499/mo pilot Enterprise Watchlist Pilot kickoff memo Sample report Annual procurement Annual prepay Business case Compare API pricing Open quickstart

Request A Managed Watchlist

Website

Work email Company Role Plan Pages to watch Monthly stale-page impact Decision timing Budget status

Workflow

Start Starter with x402 Starter invoice/card link Pay first month with x402 Use email instead

Ready To Start Without A Sales Call?

Pay the first $99 Starter Watchlist month over x402. After settlement, the checkout endpoint returns the onboarding payload for up to 25 public pages and the information needed to activate the watchlist.

Open Starter checkout Request Starter invoice Start Managed Pilot Start Business Watchlist Read pilot memo View sample report View x402 binding

Managed Watchlist Plans

Starter Watchlist

$99/month

Small teams validating one public-page monitoring workflow before a larger pilot

Up to 25 public pages watched
Daily diff checks on docs, pricing, policy, or vendor pages
Email digest with material changes
Upgrade credit into a pilot or business watchlist

Start first month with x402 Request invoice/card link Discuss Starter Watchlist

Managed Watchlist Pilot

$499/month

Teams that need docs, release-note, pricing, or policy pages watched for agent workflows

Up to 250 public pages watched
Daily freshness checks and structured diffs
Webhook or email digest for agent ingestion
One onboarding call and first workflow mapping

Discuss Managed Watchlist Pilot

Business Watchlist

$1,999/month

Product, support, or compliance teams using fresh page state in production

Up to 2,000 public pages watched
Priority fetch windows and retry handling
Custom webhook schema and integration support
Monthly freshness report for business owners

Pay first month with x402 RFP proposal workflow Discuss Business Watchlist

Enterprise Watchlist

From $5,000/month

Teams that need procurement, custom volume, security review, or dedicated support

Custom page volume and fetch cadence
Dedicated onboarding and integration review
Private deployment discussion where needed
Procurement-friendly contract path

Pay first month with x402 Discuss Enterprise Watchlist

Compliance Watchlist

From $9,500/month

Compliance, procurement, legal, and vendor-risk teams that need a managed public vendor-page monitoring control

Vendor policy, pricing, terms, trust-center, and compliance pages watched
Executive escalation report for material changes
Custom review cadence, webhook schema, and audit export
Dedicated activation path for urgent vendor-risk workflows

Prepay annual with x402 Pay first month with x402 Request invoice path Discuss Compliance Watchlist

Break-Even Math For Moving Upmarket

49,500 resolve calls equal one starter month At $0.002 per resolve request, a single $99/mo starter watchlist replaces a large amount of low-volume API usage.

24,750 diff calls equal one starter month Managed watchlists package repeated checks, noise handling, and owner reporting instead of waiting for raw request volume.

999,500 resolve calls equal one business month The business plan is for teams where page changes influence support, compliance, pricing, or agent decisions in production.

Why This Exists Alongside The API

MRR needs a higher-ARPA product API Pay Per Request is ideal for agent-native usage, but $0.002 resolve / $0.004 diff requires very high volume before it becomes meaningful revenue.

Teams buy outcomes Most teams do not want to own crawler tuning, retries, change noise, and integration mapping for every page that feeds an agent.

Watchlists match the current use case The highest-fit workflows already involve repeated checks of docs, changelogs, pricing, and policy pages.

First 30 Days Of Starter Watchlist

Pick one business workflow and up to 25 public pages that influence it.
Map each page to resolve, diff, digest, or webhook delivery.
Run daily checks, remove noisy pages, and report which changes affected the agent workflow.
Upgrade to a pilot or Business Watchlist only if the watched pages are clearly used in production decisions.

What Still Uses x402?

Developers can keep using the public x402 endpoints for low-volume or agent-native calls. Managed plans package the same page freshness capability into a monthly service for teams that need monitoring ownership and integration support.

Public page to markdown API x402 paid freshness API Enterprise Watchlist Discuss managed watchlist