Marvin

Marvin (Marvin Tecnologia Ltda., CNPJ 41.240.161/0001-30) is a São Paulo, Brazil based B2B fintech and tech-native collateral agent that transforms credit-card and duplicata receivables into registered financial guarantees. Born out of Brazilian Central Bank Resolution 264 — which legalized the negotiation of credit-card receivables as financial assets — Marvin operates a "registration-as-a-service" platform that lets retailers, banks and suppliers register, manage and settle receivables-backed collateral, unlocking working capital for merchants. The company is backed by a US$15M Series A led by Canaan Partners (with Canary and Maúa Capital) and works with partners including B3, C6 Bank, Casas Bahia, Electrolux, Pernambucanas and AVLA. Marvin runs a private backend (app.marvin.com.br) for its customers; it does not currently publish a public developer API, documentation, or SDKs. This profile was added to the API Evangelist network as a Canaan Partners portfolio lead and enriched from public web sources.

Marvin is profiled on the APIs.io network. Tagged areas include Company, Fintech, Financial-Services, Payments, and Receivables.

🌐 Visit website 📡 Source on GitHub

1.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Fintech Financial-Services Payments Receivables Collateral Management B2B Brazil

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 1.5/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.4 / 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

Regulatory Posture applies to this provider. Its tags matched the Payments 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/.

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 github.com/api-evangelist/marvin: open an issue to ask a question, or submit a pull request to add artifacts. 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.

Marvin Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

Website

Website

About

About

LinkedIn

Other 2

Properties that don't map to a standard resource type

SignIn

SignIn

CaseStudies

CaseStudies

Source (apis.yml)

aid: marvin
name: Marvin
description: Marvin (Marvin Tecnologia Ltda., CNPJ 41.240.161/0001-30) is a São Paulo, Brazil based B2B fintech and tech-native
  collateral agent that transforms credit-card and duplicata receivables into registered financial guarantees. Born out of
  Brazilian Central Bank Resolution 264 — which legalized the negotiation of credit-card receivables as financial assets —
  Marvin operates a "registration-as-a-service" platform that lets retailers, banks and suppliers register, manage and settle
  receivables-backed collateral, unlocking working capital for merchants. The company is backed by a US$15M Series A led by
  Canaan Partners (with Canary and Maúa Capital) and works with partners including B3, C6 Bank, Casas Bahia, Electrolux, Pernambucanas
  and AVLA. Marvin runs a private backend (app.marvin.com.br) for its customers; it does not currently publish a public developer
  API, documentation, or SDKs. This profile was added to the API Evangelist network as a Canaan Partners portfolio lead and
  enriched from public web sources.
url: https://raw.githubusercontent.com/api-evangelist/marvin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/691268765f23b8bede3ff463/69288f8ced31fe147c9187a3_marvin-favicon.png
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1
tags:
- Company
- Fintech
- Financial-Services
- Payments
- Receivables
- Collateral Management
- B2B
- Brazil
tags_raw:
- Company
- Fintech
- Financial Services
- Payments
- Receivables
- Collateral Management
- B2B
- Brazil
apis: []
common:
- type: DomainSecurity
  url: security/marvin-domain-security.yml
- type: Website
  url: https://marvin.com.br/
- type: About
  url: https://marvin.com.br/company
- type: SignIn
  url: https://app.marvin.com.br/
- type: LinkedIn
  url: https://br.linkedin.com/company/marvin-com-vc
- type: CaseStudies
  url: https://marvin.com.br/cases
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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