ElectricSQL

ElectricSQL (Electric) is a local-first sync engine for Postgres that streams live database changes to embedded clients in browsers, apps, and AI agents via an HTTP-based Shape sync protocol. It exposes a low-level HTTP API and TypeScript, Elixir, and other client SDKs that materialize real-time Postgres data into local state with sub-millisecond reactivity. Developers can run Electric self-hosted as a Docker service or use Electric Cloud, a managed offering with pay-as-you-go and subscription plans. The platform also underpins PGlite (an embeddable Postgres under 3 MB) and Durable Streams for reliable agent messaging, making it a broader data-infrastructure toolkit for building collaborative and multi-agent systems.

ElectricSQL publishes 3 API contracts indexed on the APIs.io network, including Shape API, and 2 more. Tagged areas include Developer Tools, Database, Sync, Local-First, and PostgreSQL.

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

ElectricSQL’s developer surface includes documentation, engineering blog, changelog, pricing, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.5/100 thin ▬ flat Agent 22/100 agent aware Front door AI 3/6 light Heartbeat 56/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Developer Tools Database Sync Local-First PostgreSQL Real-Time Open Source

Kin Score

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

Composite quality — 29.5/100 · thin

Contract Quality 8.9 / 19

Developer Ergonomics 2.5 / 15

Access Clarity 2.8 / 15

Operational Transparency 2.6 / 10

Contract Governance 2.1 / 9

Discoverability 4.3 / 8

Regulatory Posture 1.6 / 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 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 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
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)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 16.7 — up to +16.7 composite points
Access Clarity scores 18.4 — up to +16.3 composite points
Contract Quality scores 47.7 — up to +13.1 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/electric-sql/apis.yml: open an issue on github.com/api-evangelist/electric-sql 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 3

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

Electric TypeScript Client

The official @electric-sql/client NPM package that wraps the HTTP Sync API with two high-level primitives: ShapeStream (low-level message stream) and Shape (materialized view). ...

Electric Sync Service Configuration API

Environment-variable-driven configuration interface for the Electric sync service (Elixir/Docker). Controls database connectivity, storage backends, concurrent request limits (i...

ElectricSQL Shape API

The Shape API from ElectricSQL — 1 operation(s) for shape.

Open Collections 1

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

Electric HTTP Shape API

OPEN COLLECTION

ElectricSQL API pricing

Not yet checked against ElectricSQL's own pricing page. Compiled by API Evangelist on 2026-06-12 from electric.ax/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Pay As You Go freemium	Free · $1.00 per 1M writes (Electric Sync)
Pro paid	$249 per monthly Fee (Prepaid Credit) / month · $0.90 per 1M writes (Electric Sync)
Scale paid	$1999 per monthly Fee (Prepaid Credit) / month · $0.80 per 1M writes (Electric Sync)
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Initial Sync Concurrent Requests: 300 concurrent requests
Live Streaming Concurrent Requests: 10000 concurrent requests
Shape Log Response Chunk Size: 10485760 bytes

Compiled by API Evangelist, not yet checked against ElectricSQL's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Electric Sql Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Electric Sql Rate Limits

3 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

ElectricSQL

SLA

FinOps 1

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

Electric Sql Finops

FINOPS

Semantic Vocabularies 1

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

Electric Sql Context

4 classes · 25 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

ElectricSQL — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

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

ShapeMessage

4 properties

JSON SCHEMA

SubsetSnapshot

2 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Electric Sql Delete Shape Example

3 fields

EXAMPLE

Electric Sql Get Shape Example

3 fields

EXAMPLE

Electric Sql Post Shape Subset Example

3 fields

EXAMPLE

Security Posture 1

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

Electric Sql Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Electric Sql Agentic Access

3 operations · 1 acting

AGENTIC

Resources

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 2

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Vocabulary

Vocabulary

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Discord

Discord

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

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: electric-sql
name: ElectricSQL
description: ElectricSQL (Electric) is a local-first sync engine for Postgres that streams live database changes to embedded
  clients in browsers, apps, and AI agents via an HTTP-based Shape sync protocol. It exposes a low-level HTTP API and TypeScript,
  Elixir, and other client SDKs that materialize real-time Postgres data into local state with sub-millisecond reactivity.
  Developers can run Electric self-hosted as a Docker service or use Electric Cloud, a managed offering with pay-as-you-go
  and subscription plans. The platform also underpins PGlite (an embeddable Postgres under 3 MB) and Durable Streams for reliable
  agent messaging, making it a broader data-infrastructure toolkit for building collaborative and multi-agent systems.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/electric-sql.png
x-docs-platform: vitepress
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Developer Tools
- Database
- Sync
- Local-First
- PostgreSQL
- Real-Time
- Open Source
tags_raw:
- Developer Tools
- Database
- Sync
- Local-First
- Postgres
- Real-Time
- Open Source
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/electric-sql/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.23'
apis:
- aid: electric-sql:typescript-client
  name: Electric TypeScript Client
  description: 'The official @electric-sql/client NPM package that wraps the HTTP Sync API with two high-level primitives:
    ShapeStream (low-level message stream) and Shape (materialized view). Supports SSE, long-polling fallback, custom auth
    headers, PostgreSQL type parsers, and column mapping utilities for browser and Node.js environments.'
  humanURL: https://electric.ax/docs/api/clients/typescript
  tags:
  - TypeScript
  - SDK
  - Client Library
  - JavaScript
  properties:
  - type: Documentation
    url: https://electric.ax/docs/api/clients/typescript
- aid: electric-sql:sync-service-config-api
  name: Electric Sync Service Configuration API
  description: 'Environment-variable-driven configuration interface for the Electric sync service (Elixir/Docker). Controls
    database connectivity, storage backends, concurrent request limits (initial: 300, live: 10 000), shape eviction, authentication
    secrets, and TCP timeouts. Returns 503 when concurrent request caps are exceeded.'
  humanURL: https://electric.ax/docs/api/config
  tags:
  - Configuration
  - Self-Hosted
  - DevOps
  properties:
  - type: Documentation
    url: https://electric.ax/docs/api/config
- aid: electric-sql:electric-sql-shape-api
  name: ElectricSQL Shape API
  description: The Shape API from ElectricSQL — 1 operation(s) for shape.
  humanURL: https://electric.ax/docs/api/http
  baseURL: https://api.electric-sql.cloud
  tags:
  - Shape
  properties:
  - type: OpenAPI
    url: openapi/electric-sql-shape-api-openapi.yml
  - type: Documentation
    url: https://electric.ax/docs/api/http
common:
- type: AgenticAccess
  url: agentic-access/electric-sql-agentic-access.yml
- type: DomainSecurity
  url: security/electric-sql-domain-security.yml
- type: Website
  url: https://electric.ax
- type: Documentation
  url: https://electric.ax/docs/sync/
- type: GitHubOrganization
  url: https://github.com/electric-sql
- type: LinkedIn
  url: https://www.linkedin.com/company/electric-sql
- type: Blog
  url: https://electric.ax/blog
- type: ChangeLog
  url: https://electric.ax/changelog
- type: Pricing
  url: https://electric.ax/pricing
- type: X
  url: https://x.com/ElectricSQL
- type: Discord
  url: https://discord.electric-sql.com
- type: Plans
  url: plans/electric-sql-plans-pricing.yml
- type: RateLimits
  url: rate-limits/electric-sql-rate-limits.yml
- type: FinOps
  url: finops/electric-sql-finops.yml
- type: JSONSchema
  url: json-schema/electric-sql-shape-message-schema.json
- type: JSONSchema
  url: json-schema/electric-sql-subset-snapshot-schema.json
- type: JSONLDContext
  url: json-ld/electric-sql-context.jsonld
- type: Vocabulary
  url: vocabulary/electric-sql-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

ElectricSQL API — frequently asked questions

Does ElectricSQL have an API?

Yes. APIs.io lists 3 APIs from ElectricSQL, including Electric TypeScript Client, Electric Sync Service Configuration API and ElectricSQL Shape API.

Is there an OpenAPI specification for the ElectricSQL API?

Yes. APIs.io indexes 1 OpenAPI specification for ElectricSQL, each linked for download from this page.

How much does the ElectricSQL API cost?

APIs.io lists 4 pricing plans for ElectricSQL, with each plan's price, limits and inclusions under Pricing on this page.

Is the ElectricSQL API ready for AI agents?

ElectricSQL has a Kin Score of 29.5 out of 100 (thin) and an Agent Readiness score of 22.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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