Historis

Historis is the operational memory of a small business: every order, call and follow‑up attached to the right contact (customers, suppliers, prospects) on a single timeline, every entry dated and signed. AI assistants can optionally connect to read and write that history. It offers a free tier and paid plans up to $17 per month.

Historis publishes 2 API contracts indexed on the APIs.io network, including API API, and 1 more. Tagged areas include CRM, Small Business, Light, Memory, and Software-as-a-Service.

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

Historis’ developer surface includes engineering blog, documentation, API reference, getting-started guide, pricing, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.1/100 thin Agent 20/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

CRM Small BusinessLightMemory Software-as-a-Service

Kin Score

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

Composite quality — 39.1/100 · thin

Contract Quality 10.8 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 6.2 / 17

Operational Transparency 1.0 / 11

Contract Governance 2.2 / 10

Discoverability 6.5 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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 5 / 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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 →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 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 →

9 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Access Clarity scores 36.2 — up to +12.8 composite points Ask about this →
Contract Quality scores 50.7 — up to +12.3 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/historis-app/apis.yml: open an issue on github.com/api-evangelist/historis-app 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 2

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Historis API

Public REST API for Historis operational memory.

Historis API API

Historis keeps a shared, event-based timeline of what happened, linked to the right people. This document describes the public REST API and the MCP transport. Most REST endpoint...

Semantic Vocabularies 1

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

Historis App Context

11 classes · 20 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.

Historis API Rules

60 rules · 52 error-severity 7 warn-severity 1 info-severity

SPECTRAL

JSON Schema 6

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

Credentials

2 properties

JSON SCHEMA

EventInput

6 properties

JSON SCHEMA

KnowledgeSavedViewInput

2 properties

JSON SCHEMA

PersonInput

6 properties

JSON SCHEMA

RuleInput

3 properties

JSON SCHEMA

WebhookIngest

5 properties

JSON SCHEMA

Security Posture 2

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

Historis Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Historis Vulnerability Disclosure

no policy recorded

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

DataModel

ErrorCatalog

Access & Security 3

Authentication, authorization, and security posture

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: historis-app
name: Historis
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  method: derived
image: https://historis.app/og.png
description: 'Historis is the operational memory of a small business: every order, call and follow‑up attached to the right
  contact (customers, suppliers, prospects) on a single timeline, every entry dated and signed. AI assistants can optionally
  connect to read and write that history. It offers a free tier and paid plans up to $17 per month.'
url: https://artifacts.apis.io/historis-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- CRM
- Small Business
- Light
- Memory
- Software-as-a-Service
tags_raw:
- CRM
- Small Business
- Light
- Memory
- SaaS
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/historis-app-rules.yml
- type: JSONLD
  url: json-ld/historis-app-context.jsonld
- type: Vocabulary
  url: vocabulary/historis-app-vocabulary.yml
- type: Conformance
  url: conformance/historis-app-conformance.yml
- type: DataModel
  url: data-model/historis-app-data-model.yml
- type: ErrorCatalog
  url: errors/historis-app-problem-types.yml
- type: LLMsTxt
  url: llms/historis-app-llms.txt
- type: WellKnown
  url: well-known/historis-app-well-known.yml
- type: Hosts
  url: hosts/historis-app-hosts.yml
- type: Vendors
  url: vendors/historis-app-vendors.yml
- type: TermsOfService
  url: https://historis.app/terms
- type: Security
  url: https://historis.app/security
- type: PrivacyPolicy
  url: https://historis.app/privacy
- type: Login
  url: https://historis.app/login
- type: Blog
  url: https://historis.app/blog
- type: VulnerabilityDisclosure
  url: security/historis-app-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/historis-app-domain-security.yml
- type: Website
  url: https://historis.app/
- type: Documentation
  url: https://historis.app/docs
- type: APIReference
  url: https://historis.app/docs
- type: GettingStarted
  url: https://historis.app/docs#getting-started
- type: Pricing
  url: https://historis.app/#pricing
apis:
- name: Historis API
  description: Public REST API for Historis operational memory.
  humanURL: https://historis.app/docs
  baseURL: https://historis.app
  aid: historis-app:historis-api
- aid: historis-app:historis-api-api
  name: Historis API API
  description: 'Historis keeps a shared, event-based timeline of what happened, linked to the right people. This document
    describes the public REST API and the MCP transport. Most REST endpoints require a Supabase session JWT (a signed-in person)
    and are rate-limited per identity; a Supabase OAuth 2.1 access token '
  humanURL: https://historis.app/llms.txt
  baseURL: https://api.historis.app
  properties:
  - type: OpenAPI
    url: openapi/_original/historis-app-api-openapi.json
  - type: JSONSchema
    url: json-schema/historis-app-knowledge-saved-view-input-schema.json
  - type: JSONSchema
    url: json-schema/historis-app-event-input-schema.json
  - type: JSONSchema
    url: json-schema/historis-app-webhook-ingest-schema.json
  - type: JSONSchema
    url: json-schema/historis-app-person-input-schema.json
  - type: JSONSchema
    url: json-schema/historis-app-rule-input-schema.json
  - type: JSONSchema
    url: json-schema/historis-app-credentials-schema.json
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 21
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Historis API — frequently asked questions

Does Historis have an API?

Yes. APIs.io lists 2 APIs from Historis, including Historis API and Historis API API.

Is there an OpenAPI specification for the Historis API?

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

Is the Historis API ready for AI agents?

Historis has a Kin Score of 39.1 out of 100 (thin) and an Agent Readiness score of 20.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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