Not Diamond

Not Diamond is an AI model router that determines the best LLM to call for any given prompt. Its REST API routes each request to the optimal model across providers based on quality, cost, and latency tradeoffs, accepts real-time feedback to personalize routing, and can train custom routers from evaluation datasets.

Not Diamond publishes 4 API contracts indexed on the APIs.io network, including Custom Routers API, Feedback API, Model Routing API, and 1 more. Tagged areas include Artificial Intelligence, LLM, Model Routing, Router, and Orchestration.

The Not Diamond catalog on APIs.io includes 1 Spectral governance ruleset.

Not Diamond’s developer surface includes pricing, authentication, engineering blog, documentation, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.2/100 thin ▬ flat Agent 22/100 agent aware Front door AI 3/6 light Heartbeat 64/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract

Artificial Intelligence LLM Model Routing Router Orchestration

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Information & Data Management

BC-610

Custom RoutersModel Routing

POST /pzn/trainCustomRouter POST /modelRouter/modelSelect

Kin Score

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

Composite quality — 32.2/100 · thin

Contract Quality 9.3 / 19

Developer Ergonomics 4.1 / 15

Access Clarity 3.8 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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 →
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 →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document 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):

Access Clarity scores 25.5 — up to +14.9 composite points Ask about this →
Developer Ergonomics scores 27.4 — up to +14.5 composite points Ask about this →
Contract Quality scores 49.6 — up to +12.6 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/notdiamond/apis.yml: open an issue on github.com/api-evangelist/notdiamond 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Raycast Store Extensions (first-party publishers + community-wrapped products)	covered	12.1 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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 4

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

Not Diamond Custom Routers API

The Custom Routers API from Not Diamond — 2 operation(s) for custom routers.

Not Diamond Feedback API

The Feedback API from Not Diamond — 2 operation(s) for feedback.

Not Diamond Model Routing API

The Model Routing API from Not Diamond — 1 operation(s) for model routing.

Not Diamond Models API

The Models API from Not Diamond — 1 operation(s) for models.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Not Diamond Custom Routers API

OPEN COLLECTION

Not Diamond Custom Routers Feedback API

OPEN COLLECTION

Not Diamond Custom Routers Model Routing API

OPEN COLLECTION

Not Diamond Custom Routers Models API

OPEN COLLECTION

Not Diamond API

OPEN COLLECTION

Not Diamond API pricing

Prices published by Not Diamond, read 2026-10-07 from www.notdiamond.ai/pricing.

Plan	Price
Pay-as-you-go	$0.05 per million tokens routed Includes: Multi-harness support, Multi-provider support, Savings and usage dashboard, Continuous learning from
Enterprise	Contact us Includes: Volume-based discounts, Organization-wide analytics, Advanced security and admin controls, SSO with

Plan details, limits and sources →

Rate limits

Requests per second: Requests per second 50

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Not Diamond Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Not Diamond Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Not Diamond Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Not Diamond API Rules

60 rules · 57 error-severity 1 warn-severity 2 info-severity

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Not Diamond Models Api Certification Overlay

1 action · security · notdiamond-models-api-openapi.yml

DERIVED

Security Posture 2

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

Not Diamond Authentication

http · 1 scheme

SECURITY

Not Diamond Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Not Diamond Agentic Access

6 operations · 5 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: notdiamond
url: https://raw.githubusercontent.com/api-evangelist/notdiamond/refs/heads/main/apis.yml
name: Not Diamond
kind: company
description: Not Diamond is an AI model router that determines the best LLM to call for any given prompt. Its REST API routes
  each request to the optimal model across providers based on quality, cost, and latency tradeoffs, accepts real-time feedback
  to personalize routing, and can train custom routers from evaluation datasets.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/notdiamond.png
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
tags:
- Artificial Intelligence
- LLM
- Model Routing
- Router
- Orchestration
tags_raw:
- AI
- LLM
- Model Routing
- Router
- Orchestration
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: notdiamond:notdiamond-custom-routers-api
  name: Not Diamond Custom Routers API
  description: The Custom Routers API from Not Diamond — 2 operation(s) for custom routers.
  humanURL: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  baseURL: https://api.notdiamond.ai/v2
  tags:
  - Custom Routers
  properties:
  - type: OpenAPI
    url: openapi/notdiamond-custom-routers-api-openapi.yml
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/quickstart
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  - type: PostmanCollection
    url: collections/notdiamond.postman_collection.json
  - type: OpenCollection
    url: collections/notdiamond.opencollection.json
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/list_models_v2_models_get
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/real-time-personalization
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/train_custom_router_v2_pzn_traincustomrouter_post
- aid: notdiamond:notdiamond-feedback-api
  name: Not Diamond Feedback API
  description: The Feedback API from Not Diamond — 2 operation(s) for feedback.
  humanURL: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  baseURL: https://api.notdiamond.ai/v2
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/notdiamond-feedback-api-openapi.yml
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/quickstart
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  - type: PostmanCollection
    url: collections/notdiamond.postman_collection.json
  - type: OpenCollection
    url: collections/notdiamond.opencollection.json
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/list_models_v2_models_get
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/real-time-personalization
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/train_custom_router_v2_pzn_traincustomrouter_post
- aid: notdiamond:notdiamond-model-routing-api
  name: Not Diamond Model Routing API
  description: The Model Routing API from Not Diamond — 1 operation(s) for model routing.
  humanURL: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  baseURL: https://api.notdiamond.ai/v2
  tags:
  - Model Routing
  properties:
  - type: OpenAPI
    url: openapi/notdiamond-model-routing-api-openapi.yml
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/quickstart
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  - type: PostmanCollection
    url: collections/notdiamond.postman_collection.json
  - type: OpenCollection
    url: collections/notdiamond.opencollection.json
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/list_models_v2_models_get
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/real-time-personalization
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/train_custom_router_v2_pzn_traincustomrouter_post
- aid: notdiamond:notdiamond-models-api
  name: Not Diamond Models API
  description: The Models API from Not Diamond — 1 operation(s) for models.
  humanURL: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  baseURL: https://api.notdiamond.ai/v2
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/notdiamond-models-api-openapi.yml
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/quickstart
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/token_model_select_v2_modelrouter_modelselect_post
  - type: PostmanCollection
    url: collections/notdiamond.postman_collection.json
  - type: OpenCollection
    url: collections/notdiamond.opencollection.json
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/list_models_v2_models_get
  - type: Documentation
    url: https://docs.notdiamond.ai/docs/real-time-personalization
  - type: APIReference
    url: https://docs.notdiamond.ai/reference/train_custom_router_v2_pzn_traincustomrouter_post
common:
- type: Pricing
  url: https://www.notdiamond.ai/pricing
- type: CapabilityMap
  url: capabilities/notdiamond-capability-edges.yml
  name: Not Diamond Business Capability Map
- type: AgenticAccess
  url: agentic-access/notdiamond-agentic-access.yml
- type: DomainSecurity
  url: security/notdiamond-domain-security.yml
- type: Authentication
  url: authentication/notdiamond-authentication.yml
- url: https://www.notdiamond.ai/blog
  type: Blog
- type: GitHubOrganization
  url: https://github.com/Not-Diamond
- type: LinkedIn
  url: https://www.linkedin.com/company/not-diamond
- type: Website
  url: https://www.notdiamond.ai
- type: Documentation
  url: https://docs.notdiamond.ai
- type: Plans
  url: plans/notdiamond-plans-pricing.yml
- type: RateLimits
  url: rate-limits/notdiamond-rate-limits.yml
- type: FinOps
  url: finops/notdiamond-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Not Diamond API — frequently asked questions

Does Not Diamond have an API?

Yes. APIs.io lists 4 APIs from Not Diamond, including Not Diamond Custom Routers API, Not Diamond Feedback API and Not Diamond Model Routing API, and 1 more.

Is there an OpenAPI specification for the Not Diamond API?

Yes. APIs.io indexes 4 OpenAPI specifications for Not Diamond, each linked for download from this page.

How do I authenticate with the Not Diamond API?

Not Diamond uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Not Diamond Authentication.

How much does the Not Diamond API cost?

Not Diamond publishes its prices; its Pay-as-you-go plan is $0.05 per million tokens routed as of 2026-10-07. APIs.io lists 2 pricing plans for Not Diamond, with each plan's price, limits and inclusions under Pricing on this page.

Is the Not Diamond API ready for AI agents?

Not Diamond has a Kin Score of 32.2 out of 100 (thin) and an Agent Readiness score of 21.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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