Heru

Heru is a Mexican fintech platform that automates tax declarations, electronic invoicing, and compliance with the SAT for individuals, freelancers, and businesses. By connecting a user's RFC, Heru calculates, optimizes, and submits monthly tax obligations, offers expert accounting support, and provides plans ranging from basic to RESICO specialization. The service includes automated filing, tax deductions detection, and secure data handling with bank‑grade encryption.

Heru is listed with 1 API on the APIs.io network. Tagged areas include FinTech, TaxAutomation, Mexico, SaaS, and Accounting.

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

Heru’s developer surface includes changelog, getting-started guide, documentation, engineering blog, support, and 15 more developer resources.

🌐 Visit website📡 Profile data on GitHub
25.6/100 emerging Agent 3/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 API
FinTechTaxAutomationMexicoSaaSAccounting

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 25.6/100 · emerging
Contract Quality 3.5 / 21
Developer Ergonomics 6.1 / 17
Access Clarity 0.0 / 17
Operational Transparency 2.9 / 11
Contract Governance 2.2 / 10
Discoverability 5.6 / 9
Regulatory Posture 4.0 / 15
Agent readiness — 3/100 · 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 7 / 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 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/.
Show this score on your site. Kin Score badge preview for Heru It updates itself when the score changes. Paste this where you link to your API docs: 
<a href="https://apis.io/providers/heru/"><img src="https://apis.io/badge/heru/card.svg" alt="Heru on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
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
12 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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/heru/apis.yml: open an issue on github.com/api-evangelist/heru 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 1

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

Heru API

Heru API provides tax automation, electronic invoicing, and compliance operations for Mexican fintech users.

Pricing Plans 1

Published pricing tiers and plan structures.

Heru Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Heru Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Heru Context

44 classes · 116 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Heru API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

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

Heru Authentication

0 schemes

SECURITY

Heru Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Heru Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Heru Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 Conformance
Conformance

Access & Security 5

Authentication, authorization, and security posture

Security
Security
 SecurityTxt
SecurityTxt
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Support
Support

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: heru
name: Heru
description: Heru is a Mexican fintech platform that automates tax declarations, electronic invoicing, and compliance with
  the SAT for individuals, freelancers, and businesses. By connecting a user's RFC, Heru calculates, optimizes, and submits
  monthly tax obligations, offers expert accounting support, and provides plans ranging from basic to RESICO specialization.
  The service includes automated filing, tax deductions detection, and secure data handling with bank‑grade encryption.
url: https://artifacts.apis.io/heru/apis.yml
x-type: company
x-source: harvest:vc-portfolio
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:
- FinTech
- TaxAutomation
- Mexico
- SaaS
- Accounting
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://www.heru.app/heru-logo.svg
common:
- type: Spectral
  url: rules/heru-rules.yml
- type: JSONLD
  url: json-ld/heru-context.jsonld
- type: Vocabulary
  url: vocabulary/heru-vocabulary.yml
- type: DataModel
  url: data-model/heru-data-model.yml
- type: Security
  url: security/heru-vulnerability-disclosure.yml
- type: Conformance
  url: conformance/heru-conformance.yml
- type: LLMsTxt
  url: llms/heru-llms.txt
- type: SecurityTxt
  url: well-known/heru-security.txt
- type: SecurityTxt
  url: well-known/heru-heru-security.txt
- type: WellKnown
  url: well-known/heru-well-known.yml
- type: Hosts
  url: hosts/heru-hosts.yml
- type: Vendors
  url: vendors/heru-vendors.yml
- type: ChangeLog
  url: https://developers.heru.app/changelog/
- type: GettingStarted
  url: https://developers.heru.app/reference/point-of-sale/create-merchant-onboarding
- type: Documentation
  url: https://developers.heru.app/
- type: VulnerabilityDisclosure
  url: security/heru-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/heru-domain-security.yml
- type: Website
  url: https://www.heru.app/
- type: Blog
  url: https://www.heru.app/blog/
- type: Support
  url: https://www.heru.app/preguntas-frecuentes/
apis:
- aid: heru:heru-api
  name: Heru API
  description: Heru API provides tax automation, electronic invoicing, and compliance operations for Mexican fintech users.
  tags:
  - TaxAutomation
  - FinTech
  humanURL: https://developers.heru.app/reference/
  baseURL: https://api.b2b.heru.app
  properties:
  - type: Documentation
    url: https://developers.heru.app/reference/
  - type: APIReference
    url: https://developers.heru.app/reference/
x-backed-by:
- gradient-ventures
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Developer portal lists endpoints but no OpenAPI/GraphQL/AsyncAPI spec is available.
  evidence:
  - url: https://developers.heru.app/reference/
    status: 200
  checked: '2026-10-29'
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 32
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Heru API — frequently asked questions

Does Heru have an API?

Yes. APIs.io lists 1 API from Heru, including Heru API.

How do I authenticate with the Heru API?

Heru documents its authentication (0 schemes). The details are profiled on APIs.io as Heru Authentication.

Is the Heru API ready for AI agents?

Heru has a Kin Score of 25.6 out of 100 (emerging) and an Agent Readiness score of 2.5 (human-only), scored by API Evangelist on 2026-10-31.

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