booklint-com

booklint provides deterministic spending guardrails for agents, allowing users to set limits for actions such as hotel bookings, purchases, subscriptions, invoices, quotes, budgets and data quality. The service offers a verification desk with an HTTPS API and MCP interface, operating as a sole trader shop in England and Wales. It aims to prevent overspending and enforce rule‑based constraints without storing personal data, delivering transparent, rule‑driven financial controls for automated workflows.

booklint-com publishes 15 API contracts indexed on the APIs.io network, including Booklint API, Check Accounts Tieout API, Check API, and 12 more. Tagged areas include Finance, Spending, Automation, API, and Guardrails.

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

booklint-com’s developer surface includes pricing, authentication, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.0/100 thin Agent 29/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Finance Spending AutomationAPIGuardrailsSaaS

Kin Score

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

Composite quality — 39.0/100 · thin

Contract Quality 10.8 / 21

Developer Ergonomics 3.1 / 17

Access Clarity 10.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.0 / 10

Discoverability 5.2 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 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):

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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

6 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 18.3 — up to +16.3 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points
Contract Quality scores 51.0 — up to +12.3 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/booklint-com/apis.yml: open an issue on github.com/api-evangelist/booklint-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 →

APIs 15

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

booklint-com Booklint API

The Booklint API from booklint-com — 1 operation(s) for booklint.

booklint-com Check Accounts Tieout API

The Check Accounts Tieout API from booklint-com — 1 operation(s) for check accounts tieout.

booklint-com Check API

The Check API from booklint-com — 1 operation(s) for check.

booklint-com Check Budget Variance API

The Check Budget Variance API from booklint-com — 1 operation(s) for check budget variance.

booklint-com Check Invoice API

The Check Invoice API from booklint-com — 1 operation(s) for check invoice.

booklint-com Check Quote Math API

The Check Quote Math API from booklint-com — 1 operation(s) for check quote math.

booklint-com Health API

The Health API from booklint-com — 1 operation(s) for health.

booklint-com Keys API

The Keys API from booklint-com — 2 operation(s) for keys.

booklint-com Llms.txt API

The Llms.txt API from booklint-com — 1 operation(s) for llms.txt.

booklint-com MCP API

The Mcp API from booklint-com — 1 operation(s) for mcp.

booklint-com Openapi.json API

The Openapi.json API from booklint-com — 1 operation(s) for openapi.json.

booklint-com Plans API

The Plans API from booklint-com — 1 operation(s) for plans.

booklint-com Privacy API

The Privacy API from booklint-com — 1 operation(s) for privacy.

booklint-com Sample API

The Sample API from booklint-com — 1 operation(s) for sample.

booklint-com Terms API

The Terms API from booklint-com — 1 operation(s) for terms.

Scroll for all 15

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

booklint-com MCP Server

Remote MCP server at booklint.com.

MCP SERVER

Agent Skills 1

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

check-book

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Booklint Com Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Booklint Com Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Booklint Com Context

2 classes · 10 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

booklint-com API Rules

9 rules · 8 errors 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

OfferCheckRequest

4 properties

JSON SCHEMA

Security Posture 2

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

Booklint Com Authentication

http · 1 scheme

SECURITY

Booklint Com Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Booklint Com Agentic Access

16 operations · 7 acting

AGENTIC

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: booklint-com
name: booklint-com
description: booklint provides deterministic spending guardrails for agents, allowing users to set limits for actions such
  as hotel bookings, purchases, subscriptions, invoices, quotes, budgets and data quality. The service offers a verification
  desk with an HTTPS API and MCP interface, operating as a sole trader shop in England and Wales. It aims to prevent overspending
  and enforce rule‑based constraints without storing personal data, delivering transparent, rule‑driven financial controls
  for automated workflows.
url: https://artifacts.apis.io/booklint-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Finance
- Spending
- Automation
- API
- Guardrails
- SaaS
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/booklint-com-agentic-access.yml
- type: Plans
  url: plans/booklint-com-plans-pricing.yml
- type: Spectral
  url: rules/booklint-com-rules.yml
- type: JSONLD
  url: json-ld/booklint-com-context.jsonld
- type: Vocabulary
  url: vocabulary/booklint-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/booklint-com-data-model.yml
- type: ErrorCatalog
  url: errors/booklint-com-problem-types.yml
- type: Conformance
  url: conformance/booklint-com-conformance.yml
- type: LLMsTxt
  url: llms/booklint-com-llms.txt
- type: ToolCrosswalk
  url: mcp/booklint-com-tool-crosswalk.yml
- type: MCPServer
  url: mcp/booklint-com-mcp.yml
- type: Hosts
  url: hosts/booklint-com-hosts.yml
- type: Vendors
  url: vendors/booklint-com-vendors.yml
- type: Pricing
  url: https://booklint.com/v1/plans
- type: Authentication
  url: authentication/booklint-com-authentication.yml
- type: DomainSecurity
  url: security/booklint-com-domain-security.yml
- type: Website
  url: https://booklint.com/
- type: TermsOfService
  url: https://booklint.com/terms
- type: PrivacyPolicy
  url: https://booklint.com/privacy
apis:
- aid: booklint-com:booklint-com-booklint-api
  name: booklint-com Booklint API
  description: The Booklint API from booklint-com — 1 operation(s) for booklint.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Booklint
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-booklint-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-check-accounts-tieout-api
  name: booklint-com Check Accounts Tieout API
  description: The Check Accounts Tieout API from booklint-com — 1 operation(s) for check accounts tieout.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Check Accounts Tieout
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-check-accounts-tieout-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-check-api
  name: booklint-com Check API
  description: The Check API from booklint-com — 1 operation(s) for check.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Check
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-check-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-check-budget-variance-api
  name: booklint-com Check Budget Variance API
  description: The Check Budget Variance API from booklint-com — 1 operation(s) for check budget variance.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Check Budget Variance
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-check-budget-variance-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-check-invoice-api
  name: booklint-com Check Invoice API
  description: The Check Invoice API from booklint-com — 1 operation(s) for check invoice.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Check Invoice
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-check-invoice-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-check-quote-math-api
  name: booklint-com Check Quote Math API
  description: The Check Quote Math API from booklint-com — 1 operation(s) for check quote math.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Check Quote Math
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-check-quote-math-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-health-api
  name: booklint-com Health API
  description: The Health API from booklint-com — 1 operation(s) for health.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-keys-api
  name: booklint-com Keys API
  description: The Keys API from booklint-com — 2 operation(s) for keys.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-keys-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-llms-txt-api
  name: booklint-com Llms.txt API
  description: The Llms.txt API from booklint-com — 1 operation(s) for llms.txt.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Llms.txt
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-llms-txt-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-mcp-api
  name: booklint-com MCP API
  description: The Mcp API from booklint-com — 1 operation(s) for mcp.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Mcp
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-mcp-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-openapi-json-api
  name: booklint-com Openapi.json API
  description: The Openapi.json API from booklint-com — 1 operation(s) for openapi.json.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Openapi.json
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-openapi-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-plans-api
  name: booklint-com Plans API
  description: The Plans API from booklint-com — 1 operation(s) for plans.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Plans
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-plans-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-privacy-api
  name: booklint-com Privacy API
  description: The Privacy API from booklint-com — 1 operation(s) for privacy.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Privacy
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-privacy-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-sample-api
  name: booklint-com Sample API
  description: The Sample API from booklint-com — 1 operation(s) for sample.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Sample
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-sample-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
- aid: booklint-com:booklint-com-terms-api
  name: booklint-com Terms API
  description: The Terms API from booklint-com — 1 operation(s) for terms.
  humanURL: https://booklint.com/
  baseURL: https://booklint.com
  tags:
  - Terms
  properties:
  - type: OpenAPI
    url: openapi/booklint-com-terms-api-openapi.yml
  - type: JSONSchema
    url: json-schema/booklint-com-offer-check-request-schema.json
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

booklint-com API — frequently asked questions

Does booklint-com have an API?

Yes. APIs.io lists 15 APIs from booklint-com, including booklint-com Booklint API, booklint-com Check Accounts Tieout API and booklint-com Check API, and 12 more.

Is there an OpenAPI specification for the booklint-com API?

Yes. APIs.io indexes 15 OpenAPI specifications for booklint-com, each linked for download from this page.

How do I authenticate with the booklint-com API?

booklint-com uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Booklint Com Authentication.

How much does the booklint-com API cost?

APIs.io lists 3 pricing plans for booklint-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does booklint-com have an MCP server?

Yes. APIs.io lists 1 MCP server for booklint-com: Remote MCP server at booklint.com.

Is the booklint-com API ready for AI agents?

booklint-com has a Kin Score of 39.0 out of 100 (thin) and an Agent Readiness score of 28.7 (agent-ready), scored by API Evangelist on 2026-10-31.

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