Miriel

Miriel is the context engine and platform for AI-native development. It gives AI apps and agents the context they need in real time through a simple API: developers connect a data source with the learn operation and retrieve relevant context with the query operation, backed by LLM, vector, and knowledge-graph retrieval. Every interaction is encrypted and permissions are managed at the token level (per-user grants and policies). Built by a team with backgrounds across Google, Tesla, Facebook, and Posit, Miriel handles intelligent indexing and retrieval tailored to each source, plus Labs projects (Nora, Floodlight) and tools like Autodev and NexusBuild. Backed by Foundry Group.

Miriel publishes 7 APIs on the APIs.io network, including Documents API, Learn API, Monitoring API, and 4 more. Tagged areas include Company, Ai, Context Engine, Retrieval, and RAG.

Miriel’s developer surface includes documentation, API reference, engineering blog, signup flow, authentication, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.3/100 thin ▬ flat Agent 62/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
7 APIs 1 MCP Servers
CompanyAiContext EngineRetrievalRAGKnowledge GraphVector SearchAgentsLLMDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 40.3/100 · thin
Contract Quality 13.2 / 25
Developer Ergonomics 11.7 / 20
Commercial Clarity 2.6 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 62/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 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 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/miriel: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

Miriel Documents API

The Documents API from Miriel — 8 operation(s) for documents.

Miriel Learn API

The Learn API from Miriel — 1 operation(s) for learn.

Miriel Monitoring API

The Monitoring API from Miriel — 2 operation(s) for monitoring.

Miriel Policies API

The Policies API from Miriel — 3 operation(s) for policies.

Miriel Projects API

The Projects API from Miriel — 3 operation(s) for projects.

Miriel Query API

The Query API from Miriel — 1 operation(s) for query.

Miriel Users API

The Users API from Miriel — 3 operation(s) for users.

Scroll for all 7

MCP Servers 1

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

miriel-mcp.yml

MCP SERVER

Security Posture 2

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

Miriel Authentication

apiKey · 1 scheme

SECURITY

Miriel Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Miriel Agentic Access

21 operations · 21 acting

21 operations · 21 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp
 Login
Login

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 WellKnown
WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: miriel
name: Miriel
description: 'Miriel is the context engine and platform for AI-native development. It gives AI apps and agents the context
  they need in real time through a simple API: developers connect a data source with the learn operation and retrieve relevant
  context with the query operation, backed by LLM, vector, and knowledge-graph retrieval. Every interaction is encrypted and
  permissions are managed at the token level (per-user grants and policies). Built by a team with backgrounds across Google,
  Tesla, Facebook, and Posit, Miriel handles intelligent indexing and retrieval tailored to each source, plus Labs projects
  (Nora, Floodlight) and tools like Autodev and NexusBuild. Backed by Foundry Group.'
url: https://raw.githubusercontent.com/api-evangelist/miriel/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- foundry-group
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
image: https://miriel.ai/MirielLogoWhiteNoTextOnBlue.svg
tags:
- Company
- Ai
- Context Engine
- Retrieval
- RAG
- Knowledge Graph
- Vector Search
- Agents
- LLM
- Developer Tools
apis:
- aid: miriel:miriel-documents-api
  name: Miriel Documents API
  description: The Documents API from Miriel — 8 operation(s) for documents.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/miriel-documents-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-learn-api
  name: Miriel Learn API
  description: The Learn API from Miriel — 1 operation(s) for learn.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Learn
  properties:
  - type: OpenAPI
    url: openapi/miriel-learn-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-monitoring-api
  name: Miriel Monitoring API
  description: The Monitoring API from Miriel — 2 operation(s) for monitoring.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Monitoring
  properties:
  - type: OpenAPI
    url: openapi/miriel-monitoring-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-policies-api
  name: Miriel Policies API
  description: The Policies API from Miriel — 3 operation(s) for policies.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Policies
  properties:
  - type: OpenAPI
    url: openapi/miriel-policies-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-projects-api
  name: Miriel Projects API
  description: The Projects API from Miriel — 3 operation(s) for projects.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/miriel-projects-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-query-api
  name: Miriel Query API
  description: The Query API from Miriel — 1 operation(s) for query.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/miriel-query-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
- aid: miriel:miriel-users-api
  name: Miriel Users API
  description: The Users API from Miriel — 3 operation(s) for users.
  humanURL: https://miriel.ai/docs
  baseURL: https://api.prod.miriel.ai
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/miriel-users-api-openapi.yml
  - type: Authentication
    url: authentication/miriel-authentication.yml
  - type: AgenticAccess
    url: agentic-access/miriel-agentic-access.yml
  - type: Conventions
    url: conventions/miriel-conventions.yml
  - type: DataModel
    url: data-model/miriel-data-model.yml
  - type: Conformance
    url: conformance/miriel-conformance.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://miriel.ai/docs
- type: Documentation
  url: https://miriel.ai/docs
- type: APIReference
  url: https://miriel.ai/docs
- type: Blog
  url: https://miriel.ai/blog
- type: GitHubOrganization
  url: https://github.com/miriel-ai
- type: SignUp
  url: https://app.miriel.ai
- type: Login
  url: https://app.miriel.ai
- type: LLMsTxt
  url: llms/miriel-llms.txt
- type: OpenAPI
  url: openapi/miriel-openapi.yml
- type: Overlay
  url: overlays/miriel-overlay.yaml
- type: Authentication
  url: authentication/miriel-authentication.yml
- type: AgenticAccess
  url: agentic-access/miriel-agentic-access.yml
- type: Conventions
  url: conventions/miriel-conventions.yml
- type: DataModel
  url: data-model/miriel-data-model.yml
- type: Conformance
  url: conformance/miriel-conformance.yml
- type: Packages
  url: packages/miriel-packages.yml
- type: SDKs
  url: packages/miriel-packages.yml
- type: MCPServer
  url: mcp/miriel-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/miriel-well-known.yml
- type: Lifecycle
  url: lifecycle/miriel-lifecycle.yml
- type: StatusPage
  url: https://status.miriel.ai
- type: DomainSecurity
  url: security/miriel-domain-security.yml
- type: Website
  url: https://miriel.ai
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 16
  pass: local-v1