osmAPI

osmAPI is a unified AI gateway that routes requests to OpenAI, Anthropic, Google, and 14+ LLM providers through a single API. Drop-in compatible with the OpenAI SDK, it provides smart routing, streaming, function calling, web search, response healing, embeddings, audio, and realtime endpoints.

osmAPI publishes 4 APIs on the APIs.io network, including Chat API, Messages API, Models API, and 1 more. Tagged areas include Artificial Intelligence, Anthropic, Gateways, LLM, and OpenAI.

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

osmAPI’s developer surface includes authentication, developer portal, documentation, pricing, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.2/100 thin ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

4 APIs

Artificial Intelligence Anthropic Gateways LLM OpenAI Routing

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 30.2/100 · thin

Contract Quality 9.7 / 19

Developer Ergonomics 3.0 / 15

Access Clarity 3.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 0.9 / 9

Discoverability 5.4 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · 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 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

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/.

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 github.com/api-evangelist/osmapi: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Interfaces this provider implements that became standards by being copied rather than ratified. Each is profiled by the API Commons, and the evidence column says how the claim was established — not that it was made.

The Anthropic Messages Dialect reaches core

declared — publishes a spec that declares them

2 core of 244 operations graded · api-commons/models

The OpenAI Interface reaches core

declared — publishes a spec that declares them

2 core of 338 operations graded · api-commons/models

APIs 4

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

osmAPI Chat API

The Chat API from osmAPI — 1 operation(s) for chat.

osmAPI Messages API

The Messages API from osmAPI — 1 operation(s) for messages.

osmAPI Models API

The Models API from osmAPI — 1 operation(s) for models.

osmAPI Health API

The OsmAPI Health API API from osmAPI — 1 operation(s) for osmapi health api.

Open Collections 9

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

API Collection

OPEN COLLECTION

osmAPI Anthropic Messages API

OPEN COLLECTION

osmAPI Anthropic Messages Chat API

OPEN COLLECTION

osmAPI Chat Completions API

OPEN COLLECTION

osmAPI Health API

OPEN COLLECTION

osmAPI Anthropic Chat Messages API

OPEN COLLECTION

osmAPI Anthropic Messages Chat Models API

OPEN COLLECTION

osmAPI Models API

OPEN COLLECTION

osmAPI Anthropic Messages Chat OsmAPI Health API API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Osmapi Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Osmapi Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Osmapi Finops

FINOPS

Semantic Vocabularies 1

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

Osmapi Context

4 classes · 6 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

osmAPI API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

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

osmAPI Chat Completion Response

7 properties

JSON SCHEMA

osmAPI Model

19 properties

JSON SCHEMA

Security Posture 2

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

Osmapi Authentication

http · 1 scheme

SECURITY

Osmapi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Osmapi Agentic Access

4 operations · 2 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

JSONSchema

JSONSchema

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

LinkedIn

Other 3

Properties that don't map to a standard resource type

Dashboard

Dashboard

Routing

Routing

Caching

Caching

Source (apis.yml)

aid: osmapi
name: osmAPI
description: osmAPI is a unified AI gateway that routes requests to OpenAI, Anthropic, Google, and 14+ LLM providers through
  a single API. Drop-in compatible with the OpenAI SDK, it provides smart routing, streaming, function calling, web search,
  response healing, embeddings, audio, and realtime endpoints.
type: Index
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/osmapi.png
tags:
- Artificial Intelligence
- Anthropic
- Gateways
- LLM
- OpenAI
- Routing
tags_raw:
- AI
- Anthropic
- Gateway
- LLM
- OpenAI
- Routing
url: https://raw.githubusercontent.com/api-evangelist/osmapi/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-09-16'
specificationVersion: '0.23'
apis:
- aid: osmapi:osmapi-chat-api
  name: osmAPI Chat API
  description: The Chat API from osmAPI — 1 operation(s) for chat.
  humanURL: https://docs.osmapi.com/v1_chat_completions
  baseURL: https://api.osmapi.com/v1
  tags:
  - Chat
  properties:
  - type: OpenAPI
    url: openapi/osmapi-chat-api-openapi.yml
  - type: Documentation
    url: https://docs.osmapi.com/v1_chat_completions
  - type: Documentation
    url: https://docs.osmapi.com/v1_messages
  - type: Documentation
    url: https://docs.osmapi.com/v1_models
  - type: Documentation
    url: https://docs.osmapi.com/health
- aid: osmapi:osmapi-messages-api
  name: osmAPI Messages API
  description: The Messages API from osmAPI — 1 operation(s) for messages.
  humanURL: https://docs.osmapi.com/v1_chat_completions
  baseURL: https://api.osmapi.com/v1
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/osmapi-messages-api-openapi.yml
  - type: Documentation
    url: https://docs.osmapi.com/v1_chat_completions
  - type: Documentation
    url: https://docs.osmapi.com/v1_messages
  - type: Documentation
    url: https://docs.osmapi.com/v1_models
  - type: Documentation
    url: https://docs.osmapi.com/health
- aid: osmapi:osmapi-models-api
  name: osmAPI Models API
  description: The Models API from osmAPI — 1 operation(s) for models.
  humanURL: https://docs.osmapi.com/v1_chat_completions
  baseURL: https://api.osmapi.com/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/osmapi-models-api-openapi.yml
  - type: Documentation
    url: https://docs.osmapi.com/v1_chat_completions
  - type: Documentation
    url: https://docs.osmapi.com/v1_messages
  - type: Documentation
    url: https://docs.osmapi.com/v1_models
  - type: Documentation
    url: https://docs.osmapi.com/health
- aid: osmapi:osmapi-osmapi-health-api-api
  name: osmAPI Health API
  description: The OsmAPI Health API API from osmAPI — 1 operation(s) for osmapi health api.
  humanURL: https://docs.osmapi.com/v1_chat_completions
  baseURL: https://api.osmapi.com/v1
  tags:
  - OsmAPI Health API
  properties:
  - type: OpenAPI
    url: openapi/osmapi-osmapi-health-api-api-openapi.yml
  - type: Documentation
    url: https://docs.osmapi.com/v1_chat_completions
  - type: Documentation
    url: https://docs.osmapi.com/v1_messages
  - type: Documentation
    url: https://docs.osmapi.com/v1_models
  - type: Documentation
    url: https://docs.osmapi.com/health
common:
- type: Website
  url: https://osmapi.com
- type: AgenticAccess
  url: agentic-access/osmapi-agentic-access.yml
- type: DomainSecurity
  url: security/osmapi-domain-security.yml
- type: Authentication
  url: authentication/osmapi-authentication.yml
- type: GitHubOrganization
  url: https://github.com/openstreetmap
- type: LinkedIn
  url: https://www.linkedin.com/company/osm-api
- type: Portal
  url: https://www.osmapi.com/
- type: Documentation
  url: https://docs.osmapi.com/
- type: Dashboard
  url: https://app.osmapi.com/
- type: Authentication
  url: https://docs.osmapi.com/features/api-keys
- type: RateLimits
  url: https://docs.osmapi.com/resources/rate-limits
- type: Routing
  url: https://docs.osmapi.com/features/routing
- type: Caching
  url: https://docs.osmapi.com/features/caching
- type: Pricing
  url: https://docs.osmapi.com/features/cost-breakdown
- type: JSONLDContext
  url: json-ld/osmapi-context.jsonld
- type: JSONSchema
  url: json-schema/osmapi-chat-completion-schema.json
- type: JSONSchema
  url: json-schema/osmapi-model-schema.json
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com

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