304NotModified

304NotModified provides AI‑agent‑focused factual answer services, delivering verified, sourced and timestamped responses across French regulatory domains such as electronic invoicing, vocational training, taxes, finance and law. The platform offers on‑demand services including content creation by AUTARK, and exposes a public HTTP API (Swagger UI) with endpoints for answering questions, retrieving domain coverage, and managing free API keys. All responses are cached and sourced from official references, enabling agents to obtain reliable data without personal data collection.

304NotModified publishes 10 API contracts indexed on the APIs.io network, including Answer API, Ask API, Calculs sur vos données API, and 7 more. Tagged areas include Artificial Intelligence, Knowledge Base, French, and Fact Checking.

The 304NotModified catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

304NotModified’s developer surface includes documentation, API reference, getting-started guide, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

22.9/100 emerging ▬ flat Agent 31/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

1 published contract

Artificial Intelligence Knowledge Base French Fact Checking

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 22.9/100 · emerging

Contract Quality 10.5 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 3.8 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 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

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
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)
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
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
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)

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 14.3 — up to +17.1 composite points
Operational Transparency scores 0.0 — up to +13.0 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/304notfound-com/apis.yml: open an issue on github.com/api-evangelist/304notfound-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 →

Standards implemented 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 10

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

304NotModified Answer API

The Answer API from 304NotModified — 1 operation(s) for answer.

304NotModified Ask API

The Ask API from 304NotModified — 1 operation(s) for ask.

304NotModified Calculs sur vos données API

The Calculs sur vos données API from 304NotModified — 3 operation(s) for calculs sur vos données.

304NotModified Comment API

The Comment API from 304NotModified — 1 operation(s) for comment.

304NotModified Domains API

The Domains API from 304NotModified — 1 operation(s) for domains.

304NotModified Feedback API

The Feedback API from 304NotModified — 1 operation(s) for feedback.

304NotModified Health API

The Health API from 304NotModified — 1 operation(s) for health.

304NotModified Keys API

The Keys API from 304NotModified — 1 operation(s) for keys.

304NotModified Llms.txt API

The Llms.txt API from 304NotModified — 1 operation(s) for llms.txt.

304NotModified Services API

The Services API from 304NotModified — 5 operation(s) for services.

Scroll for all 10

Rate Limits 1

Documented rate limits and quota policies.

304Notfound Com Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

304Notfound Com Context

12 classes · 50 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

304NotModified API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

AnswerRequest

3 properties

JSON SCHEMA

CommentRequest

4 properties

JSON SCHEMA

IchimokuIn

8 properties

JSON SCHEMA

PositionIn

14 properties

JSON SCHEMA

RegimeIn

5 properties

JSON SCHEMA

SelfServiceKeyRequest

3 properties

JSON SCHEMA

Security Posture 2

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

304Notfound Com Authentication

0 schemes

SECURITY

304Notfound Com Domain Security

TLSv1.3

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

304Notfound Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

304Notfound Com Agentic Access

16 operations · 9 acting · 1 human-in-the-loop

16 operations · 9 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

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

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: 304notfound-com
name: 304NotModified
description: 304NotModified provides AI‑agent‑focused factual answer services, delivering verified, sourced and timestamped
  responses across French regulatory domains such as electronic invoicing, vocational training, taxes, finance and law. The
  platform offers on‑demand services including content creation by AUTARK, and exposes a public HTTP API (Swagger UI) with
  endpoints for answering questions, retrieving domain coverage, and managing free API keys. All responses are cached and
  sourced from official references, enabling agents to obtain reliable data without personal data collection.
url: https://artifacts.apis.io/304notfound-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Artificial Intelligence
- Knowledge Base
- French
- Fact Checking
tags_raw:
- AI
- KnowledgeBase
- French
- API
- FactChecking
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/304notfound-com-agentic-access.yml
- type: Spectral
  url: rules/304notfound-com-rules.yml
- type: JSONLD
  url: json-ld/304notfound-com-context.jsonld
- type: Vocabulary
  url: vocabulary/304notfound-com-vocabulary.yml
- type: DataModel
  url: data-model/304notfound-com-data-model.yml
- type: ErrorCatalog
  url: errors/304notfound-com-problem-types.yml
- type: Conformance
  url: conformance/304notfound-com-conformance.yml
- type: LLMsTxt
  url: llms/304notfound-com-llms.txt
- type: Hosts
  url: hosts/304notfound-com-hosts.yml
- type: DomainSecurity
  url: security/304notfound-com-domain-security.yml
- type: Website
  url: https://304notfound.com/
- type: Documentation
  url: https://304notfound.com/docs
- type: APIReference
  url: https://304notfound.com/docs
- type: GettingStarted
  url: https://304notfound.com/llms.txt
apis:
- aid: 304notfound-com:304notfound-com-answer-api
  name: 304NotModified Answer API
  description: The Answer API from 304NotModified — 1 operation(s) for answer.
  humanURL: https://304notfound.com/docs
  tags:
  - Answers
  tags_raw:
  - Answer
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-answer-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-ask-api
  name: 304NotModified Ask API
  description: The Ask API from 304NotModified — 1 operation(s) for ask.
  humanURL: https://304notfound.com/docs
  tags:
  - Ask
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-ask-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-calculs-sur-vos-donn-es-api
  name: 304NotModified Calculs sur vos données API
  description: The Calculs sur vos données API from 304NotModified — 3 operation(s) for calculs sur vos données.
  humanURL: https://304notfound.com/docs
  tags:
  - Calculs sur vos données
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-calculs-sur-vos-donn-es-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-comment-api
  name: 304NotModified Comment API
  description: The Comment API from 304NotModified — 1 operation(s) for comment.
  humanURL: https://304notfound.com/docs
  tags:
  - Comment
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-comment-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-domains-api
  name: 304NotModified Domains API
  description: The Domains API from 304NotModified — 1 operation(s) for domains.
  humanURL: https://304notfound.com/docs
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-domains-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-feedback-api
  name: 304NotModified Feedback API
  description: The Feedback API from 304NotModified — 1 operation(s) for feedback.
  humanURL: https://304notfound.com/docs
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-feedback-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-health-api
  name: 304NotModified Health API
  description: The Health API from 304NotModified — 1 operation(s) for health.
  humanURL: https://304notfound.com/docs
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-keys-api
  name: 304NotModified Keys API
  description: The Keys API from 304NotModified — 1 operation(s) for keys.
  humanURL: https://304notfound.com/docs
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-keys-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-llms-txt-api
  name: 304NotModified Llms.txt API
  description: The Llms.txt API from 304NotModified — 1 operation(s) for llms.txt.
  humanURL: https://304notfound.com/docs
  tags:
  - Llms.txt
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-llms-txt-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
- aid: 304notfound-com:304notfound-com-services-api
  name: 304NotModified Services API
  description: The Services API from 304NotModified — 5 operation(s) for services.
  humanURL: https://304notfound.com/docs
  tags:
  - Services
  properties:
  - type: OpenAPI
    url: openapi/304notfound-com-services-api-openapi.yml
  - type: JSONSchema
    url: json-schema/304notfound-com-position-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-ichimoku-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-regime-in-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-comment-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-answer-request-schema.json
  - type: JSONSchema
    url: json-schema/304notfound-com-self-service-key-request-schema.json
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 33
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

304NotModified API — frequently asked questions

Does 304NotModified have an API?

Yes. APIs.io lists 10 APIs from 304NotModified, including 304NotModified Answer API, 304NotModified Ask API and 304NotModified Calculs sur vos données API, and 7 more.

Is there an OpenAPI specification for the 304NotModified API?

Yes. APIs.io indexes 10 OpenAPI specifications for 304NotModified, each linked for download from this page.

How do I authenticate with the 304NotModified API?

304NotModified documents its authentication (0 schemes). The details are profiled on APIs.io as 304Notfound Com Authentication.

Is the 304NotModified API ready for AI agents?

304NotModified has a Kin Score of 22.9 out of 100 (emerging) and an Agent Readiness score of 31.0 (agent-ready), scored by API Evangelist on 2026-11-06.

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