FetchDelta

FetchDelta provides public page data and prepaid daily watches for AI agents, offering API endpoints to resolve pages, compare changes, extract pricing information, and monitor pages over time. Users pay per request in USDC, with transparent pricing and a developer-friendly interface.

FetchDelta publishes 1 API contract indexed on the APIs.io network: Meta API. Tagged areas include Company, Artificial Intelligence, Data, and Pricing.

The FetchDelta catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

FetchDelta’s developer surface includes documentation, API reference, getting-started guide, pricing, support, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.1/100 thin Agent 26/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract 1 Agent Skills

Company Artificial Intelligence Data Pricing

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 31.1/100 · thin

Contract Quality 9.6 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 5.4 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 4.6 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 45.4 — up to +13.7 composite points Ask about this →
Access Clarity scores 31.5 — up to +13.7 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/fetchdelta-com/apis.yml: open an issue on github.com/api-evangelist/fetchdelta-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

FetchDelta Meta API

Free capability and health endpoints

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

fetchdelta-com-skill

AGENT SKILL

FetchDelta API pricing

Prices published by FetchDelta.

Plan	Price
Read page	0.002 USD per call
Compare changes	0.004 USD per call
Extract pricing	0.02 USD per call
Watch pages	0.50 USD per call

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

FetchDelta Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fetchdelta Com Context

10 classes · 41 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

FetchDelta API Rules

39 rules · 37 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

FetchDelta Domain Security

TLSv1.3

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

FetchDelta Agentic Access

4 operations

4 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fetchdelta-com
name: FetchDelta
description: FetchDelta provides public page data and prepaid daily watches for AI agents, offering API endpoints to resolve
  pages, compare changes, extract pricing information, and monitor pages over time. Users pay per request in USDC, with transparent
  pricing and a developer-friendly interface.
url: https://artifacts.apis.io/fetchdelta-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Company
- Artificial Intelligence
- Data
- Pricing
tags_raw:
- Company
- AI
- Data
- API
- Pricing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/fetchdelta-com-agentic-access.yml
- type: Plans
  url: plans/fetchdelta-com-plans-pricing.yml
- type: Spectral
  url: rules/fetchdelta-com-rules.yml
- type: JSONLD
  url: json-ld/fetchdelta-com-context.jsonld
- type: Vocabulary
  url: vocabulary/fetchdelta-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/fetchdelta-com-data-model.yml
- type: Conformance
  url: conformance/fetchdelta-com-conformance.yml
- type: LLMsTxt
  url: llms/fetchdelta-com-llms.txt
- type: AgentCard
  url: a2a/fetchdelta-com-a2a.yml
- type: WellKnown
  url: well-known/fetchdelta-com-well-known.yml
- type: Hosts
  url: hosts/fetchdelta-com-hosts.yml
- type: Vendors
  url: vendors/fetchdelta-com-vendors.yml
- type: Documentation
  url: https://fetchdelta.com/docs
- type: DomainSecurity
  url: security/fetchdelta-com-domain-security.yml
- type: Website
  url: https://fetchdelta.com/
- type: APIReference
  url: https://fetchdelta.com/openapi.json
- type: GettingStarted
  url: https://fetchdelta.com/skill.md
- type: Pricing
  url: https://fetchdelta.com/pricing
- type: Support
  url: mailto:support@fetchdelta.com
apis:
- aid: fetchdelta-com:fetchdelta-com-meta-api
  name: FetchDelta Meta API
  description: Free capability and health endpoints
  humanURL: https://fetchdelta.com/
  baseURL: https://fetchdelta.com
  tags:
  - Meta
  tags_raw:
  - meta
  properties:
  - type: OpenAPI
    url: openapi/fetchdelta-com-meta-api-openapi.yml
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

FetchDelta API — frequently asked questions

Does FetchDelta have an API?

Yes. APIs.io lists 1 API from FetchDelta, including FetchDelta Meta API.

Is there an OpenAPI specification for the FetchDelta API?

Yes. APIs.io indexes 1 OpenAPI specification for FetchDelta, each linked for download from this page.

How much does the FetchDelta API cost?

FetchDelta publishes its prices; its Read page plan is 0.002 USD per call as of 2026-11-07. APIs.io lists 4 pricing plans for FetchDelta, with each plan's price, limits and inclusions under Pricing on this page.

Is the FetchDelta API ready for AI agents?

FetchDelta has a Kin Score of 31.1 out of 100 (thin) and an Agent Readiness score of 26.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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