Valhalla website screenshot

Valhalla

Valhalla is an open-source routing engine and library suite for OpenStreetMap data. It provides turn-by-turn navigation, isochrone computation, time-distance matrix analysis, map matching, elevation sampling, optimized routing (TSP), and graph expansion via a REST API. Valhalla supports multiple travel modes including auto, bicycle, pedestrian, transit, truck, motorcycle, and motor scooter. It uses a tiled hierarchical data structure for efficient offline routing and regional extracts, with dynamic costing via a plugin architecture.

Valhalla publishes 11 APIs on the APIs.io network, including Expansion API, Height API, Isochrone API, and 8 more. Tagged areas include Routing, Navigation, OpenStreetMap, Mapping, and Geospatial.

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

Valhalla’s developer surface includes GitHub presence, documentation, and 8 more developer resources.

📡 Source on GitHub
35.8/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0
AccessFree
11 APIs
RoutingNavigationOpenStreetMapMappingGeospatialDirectionsIsochronesTravelTransportationOpen-Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0
Composite quality — 35.8/100 · thin
Contract Quality 14.8 / 25
Developer Ergonomics 1.9 / 20
Access Clarity 5.8 / 20
Operational Transparency 4.8 / 13
Contract Governance 1.2 / 12
Discoverability 7.4 / 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 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 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 Surface 0 / 5
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/valhalla: 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 11

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

Valhalla Expansion API

The Expansion API from Valhalla — 1 operation(s) for expansion.

Valhalla Height API

The Height API from Valhalla — 1 operation(s) for height.

Valhalla Isochrone API

The Isochrone API from Valhalla — 1 operation(s) for isochrone.

Valhalla Locate API

The Locate API from Valhalla — 1 operation(s) for locate.

Valhalla Optimized Route API

The Optimized Route API from Valhalla — 1 operation(s) for optimized route.

Valhalla Route API

The Route API from Valhalla — 1 operation(s) for route.

Valhalla Sources To Targets API

The Sources To Targets API from Valhalla — 1 operation(s) for sources to targets.

Valhalla Status API

The Status API from Valhalla — 1 operation(s) for status.

Valhalla Tile API

The Tile API from Valhalla — 1 operation(s) for tile.

Valhalla Trace Attributes API

The Trace Attributes API from Valhalla — 1 operation(s) for trace attributes.

Valhalla Trace Route API

The Trace Route API from Valhalla — 1 operation(s) for trace route.

Scroll for all 11

Open Collections 12

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

API Collection

OPEN COLLECTION

Valhalla Routing Expansion API

OPEN COLLECTION

Valhalla Routing Expansion Height API

OPEN COLLECTION

Valhalla Routing Expansion Isochrone API

OPEN COLLECTION

Valhalla Routing Expansion Locate API

OPEN COLLECTION

Valhalla Routing Expansion Optimized Route API

OPEN COLLECTION

Valhalla Routing Expansion Route API

OPEN COLLECTION

Valhalla Routing Expansion Sources To Targets API

OPEN COLLECTION

Valhalla Routing Expansion Status API

OPEN COLLECTION

Valhalla Routing Expansion Tile API

OPEN COLLECTION

Valhalla Routing Expansion Trace Attributes API

OPEN COLLECTION

Valhalla Routing Expansion Trace Route API

OPEN COLLECTION

Scroll for all 12

Pricing Plans 1

Published pricing tiers and plan structures.

Open Source

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Openstreetmap De

5 limits

RATE LIMITS

FinOps 1

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

Self Hosted

FINOPS

Semantic Vocabularies 1

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

Valhalla Context

0 classes · 56 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Valhalla API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 4

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

IsochroneRequest

11 properties

JSON SCHEMA

Location

13 properties

JSON SCHEMA

MatrixRequest

10 properties

JSON SCHEMA

RouteRequest

15 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Height

3 fields

EXAMPLE

Isochrone

3 fields

EXAMPLE

Route

3 fields

EXAMPLE

Sources To Targets

3 fields

EXAMPLE

Security Posture 1

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

Valhalla Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Valhalla Agentic Access

12 operations · 9 acting

12 operations · 9 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

DemoServer
DemoServer

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 OpenAPI
OpenAPI

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

License
License
 Plans
Plans
 FinOps
FinOps

Source (apis.yml)

apis.yml Raw ↑ 
name: Valhalla
description: Valhalla is an open-source routing engine and library suite for OpenStreetMap data. It provides turn-by-turn
  navigation, isochrone computation, time-distance matrix analysis, map matching, elevation sampling, optimized routing (TSP),
  and graph expansion via a REST API. Valhalla supports multiple travel modes including auto, bicycle, pedestrian, transit,
  truck, motorcycle, and motor scooter. It uses a tiled hierarchical data structure for efficient offline routing and regional
  extracts, with dynamic costing via a plugin architecture.
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://valhalla.github.io/valhalla/images/valhalla.png
tags:
- Routing
- Navigation
- OpenStreetMap
- Mapping
- Geospatial
- Directions
- Isochrones
- Travel
- Transportation
- Open-Source
tags_raw:
- Routing
- Navigation
- OpenStreetMap
- Mapping
- Geospatial
- Directions
- Isochrones
- Travel
- Transportation
- Open Source
created: '2026-06-13'
modified: '2026-06-13'
url: https://raw.githubusercontent.com/api-evangelist/valhalla/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: valhalla:valhalla-expansion-api
  name: Valhalla Expansion API
  description: The Expansion API from Valhalla — 1 operation(s) for expansion.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Expansion
  properties:
  - type: OpenAPI
    url: openapi/valhalla-expansion-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-height-api
  name: Valhalla Height API
  description: The Height API from Valhalla — 1 operation(s) for height.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Height
  properties:
  - type: OpenAPI
    url: openapi/valhalla-height-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-isochrone-api
  name: Valhalla Isochrone API
  description: The Isochrone API from Valhalla — 1 operation(s) for isochrone.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Isochrone
  properties:
  - type: OpenAPI
    url: openapi/valhalla-isochrone-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-locate-api
  name: Valhalla Locate API
  description: The Locate API from Valhalla — 1 operation(s) for locate.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Locate
  properties:
  - type: OpenAPI
    url: openapi/valhalla-locate-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-optimized-route-api
  name: Valhalla Optimized Route API
  description: The Optimized Route API from Valhalla — 1 operation(s) for optimized route.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Optimized Route
  properties:
  - type: OpenAPI
    url: openapi/valhalla-optimized-route-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-route-api
  name: Valhalla Route API
  description: The Route API from Valhalla — 1 operation(s) for route.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Route
  properties:
  - type: OpenAPI
    url: openapi/valhalla-route-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-sources-to-targets-api
  name: Valhalla Sources To Targets API
  description: The Sources To Targets API from Valhalla — 1 operation(s) for sources to targets.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Sources To Targets
  properties:
  - type: OpenAPI
    url: openapi/valhalla-sources-to-targets-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-status-api
  name: Valhalla Status API
  description: The Status API from Valhalla — 1 operation(s) for status.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/valhalla-status-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-tile-api
  name: Valhalla Tile API
  description: The Tile API from Valhalla — 1 operation(s) for tile.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Tile
  properties:
  - type: OpenAPI
    url: openapi/valhalla-tile-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-trace-attributes-api
  name: Valhalla Trace Attributes API
  description: The Trace Attributes API from Valhalla — 1 operation(s) for trace attributes.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Trace Attributes
  properties:
  - type: OpenAPI
    url: openapi/valhalla-trace-attributes-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
- aid: valhalla:valhalla-trace-route-api
  name: Valhalla Trace Route API
  description: The Trace Route API from Valhalla — 1 operation(s) for trace route.
  humanURL: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  baseURL: https://valhalla1.openstreetmap.de
  tags:
  - Trace Route
  properties:
  - type: OpenAPI
    url: openapi/valhalla-trace-route-api-openapi.yml
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/turn-by-turn/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/optimized/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/matrix/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/isochrone/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/map-matching/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/elevation/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/expansion/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/api/locate/api-reference/
  - type: Documentation
    url: https://valhalla.github.io/valhalla/
common:
- type: AgenticAccess
  url: agentic-access/valhalla-agentic-access.yml
- type: DomainSecurity
  url: security/valhalla-domain-security.yml
- type: GitHub
  url: https://github.com/valhalla/valhalla
- type: Documentation
  url: https://valhalla.github.io/valhalla/
- type: OpenAPI
  url: https://valhalla.github.io/valhalla/api/openapi/
- type: DemoServer
  url: https://valhalla.openstreetmap.de/
- type: License
  url: https://github.com/valhalla/valhalla/blob/master/LICENSE.md
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/valhalla/refs/heads/main/rate-limits/openstreetmap-de.yml
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/valhalla/refs/heads/main/plans/open-source.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/valhalla/refs/heads/main/finops/self-hosted.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
  • get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
  • get_provider_ratingPRO — composite, band, trend and facet scores.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/valhalla"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/valhalla/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/valhalla/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.