Paybook

Paybook provides a financial data aggregation platform that enables businesses and developers to access, normalize, and analyze banking, credit card, and other financial account information through a unified API. By connecting to thousands of financial institutions worldwide, Paybook simplifies account verification, transaction retrieval, balance checks, and categorization, supporting use cases such as personal finance apps, lending platforms, and accounting software. The service emphasizes security, compliance with banking regulations, and robust developer tooling, offering sandbox environments, detailed documentation, and SDKs for rapid integration.

Paybook is profiled on the APIs.io network. Tagged areas include Company, FinTech, Data Aggregation, API, and Banking.

Paybook’s developer surface includes documentation and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

15.2/100 emerging Agent 0/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

CompanyFinTechData AggregationAPIBanking

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 15.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 5.8 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 1.7 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Banking & Open Finance 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 Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

13 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Access Clarity scores 34.2 — up to +13.2 composite points

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.

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/paybook/apis.yml: open an issue on github.com/api-evangelist/paybook 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 →

Security Posture 1

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

Paybook Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

AboutUs

AboutUs

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: paybook
name: Paybook
image: https://www.paybook.com/assets/site-paybook/images/paybook-social.jpg
description: Paybook provides a financial data aggregation platform that enables businesses and developers to access, normalize,
  and analyze banking, credit card, and other financial account information through a unified API. By connecting to thousands
  of financial institutions worldwide, Paybook simplifies account verification, transaction retrieval, balance checks, and
  categorization, supporting use cases such as personal finance apps, lending platforms, and accounting software. The service
  emphasizes security, compliance with banking regulations, and robust developer tooling, offering sandbox environments, detailed
  documentation, and SDKs for rapid integration.
url: https://raw.githubusercontent.com/api-evangelist/paybook/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-21 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-21'
modified: '2026-10-21'
tags:
- Company
- FinTech
- Data Aggregation
- API
- Banking
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/paybook-hosts.yml
- type: Vendors
  url: vendors/paybook-vendors.yml
- type: SDKs
  url: packages/paybook-packages.yml
- type: Packages
  url: packages/paybook-packages.yml
- type: TermsOfService
  url: https://help.paybook.com/en/article/terms-of-use-183zl4u/
- type: PrivacyPolicy
  url: https://help.paybook.com/en/article/privacy-and-security-policy-k33bgf/
- type: Documentation
  url: https://help.paybook.com/
- type: GitHubOrganization
  url: https://github.com/Paybook
- type: DomainSecurity
  url: security/paybook-domain-security.yml
- type: Website
  url: https://paybook.com/
- type: AboutUs
  url: https://www.paybook.com/en/about
- type: HelpCenter
  url: https://paybook.crisp.help/
- type: Login
  url: https://www.paybook.com/w/en/paybook/login
apis: []
x-coverage:
  state: none
  reason: no-developer-program
  method: derived
  generated: '2026-10-21'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes no developer documentation host and no machine-readable contract on its own domain
  evidence:
  - url: https://api.crisp.help/mcp/v1
    status: null
  - url: https://paybook.crisp.help/mcp/v1
    status: null
  - url: https://paybook.com/
    status: 200
x-enrichment:
  date: '2026-10-21'
  status: enriched
  artifacts_added: 9
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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