Coral

Coral is a local-first SQL runtime that gives AI agents governed, read-only access to data across any API, database, or file system using standard SQL — no custom integrations, ETL, or glue code required. Built by Phoebe Technology Limited (a GV / Google Ventures portfolio company incorporated in England and Wales, formerly branded Phoebe at phoebe.ai), Coral translates SQL into API calls or file reads and returns a single result set, handling authentication, authorization, pagination, rate limiting, and schema mapping automatically. It ships 25+ bundled sources (GitHub, GitLab, Slack, Datadog, Linear, Sentry, Jira, Stripe, PagerDuty, Notion, Grafana, Confluence and more), supports cross-source SQL JOINs executed locally, and exposes the same runtime over the Model Context Protocol (MCP) or a CLI. Coral is open-source (Apache-2.0), self-hosted so queries and data never leave your infrastructure, and ISO 27001:2022 certified / GDPR compliant.

Coral is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Agents, MCP, and SQL.

Coral’s developer surface includes documentation, getting-started guide, engineering blog, pricing, support, CLI, changelog, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.3/100 thin ▬ flat Agent 6/100 agent aware Front door AI 5/6 prominent Heartbeat 72/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

0 APIs 1 MCP Servers 1 Agent Skills

Company Artificial Intelligence Agents MCP SQL Data Access Data Integration Developer Tools Open Source

Kin Score

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

Composite quality — 38.3/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 12.1 / 17

Operational Transparency 3.2 / 11

Contract Governance 1.9 / 10

Discoverability 5.0 / 9

Regulatory Posture 4.1 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 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 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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<a href="https://apis.io/providers/phoebe/"><img src="https://apis.io/badge/phoebe/card.svg" alt="Coral on APIs.io — Kin Score by API Evangelist"></a>

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Developer Ergonomics scores 52.4 — up to +9.5 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/phoebe/apis.yml: open an issue on github.com/api-evangelist/phoebe 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 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (platform)

Agent Skills

measured — observed by APIs.io (published)

MCP Servers 1

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

Coral MCP Server

Coral is itself an MCP server: the same local SQL runtime that the CLI drives is exposed to agents over MCP via `coral mcp-stdio`. A separate hosted MCP server (Mintlify) provid...

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

Withcoral

AGENT SKILL

Coral API pricing

Prices published by Coral, read 2026-10-07 from withcoral.com/pricing. A free plan or tier is listed.

Plan	Price
Open Source	Free forever Includes: Core features, unlimited data sources, agents, queries; self-hosted, community support
Team	$249/ month + $0.005/ query above 50 000 queries Includes: 50 000 queries
Enterprise	Custom pricing Includes: Everything in Team + SAML/SCIM, RBAC, audit log, SLAs

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Phoebe Plans Pricing

3 plans

PLANS

Security Posture 2

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

Phoebe Domain Security

TLSv1.3 · DMARC

SECURITY

Phoebe Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

WellKnown

MCPServer

AgentSkill

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conventions

Conventions

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

CLI

CLI

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

DomainSecurity

SecurityTxt

Compliance

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Source (apis.yml)

aid: phoebe
name: Coral
description: Coral is a local-first SQL runtime that gives AI agents governed, read-only access to data across any API, database,
  or file system using standard SQL — no custom integrations, ETL, or glue code required. Built by Phoebe Technology Limited
  (a GV / Google Ventures portfolio company incorporated in England and Wales, formerly branded Phoebe at phoebe.ai), Coral
  translates SQL into API calls or file reads and returns a single result set, handling authentication, authorization, pagination,
  rate limiting, and schema mapping automatically. It ships 25+ bundled sources (GitHub, GitLab, Slack, Datadog, Linear, Sentry,
  Jira, Stripe, PagerDuty, Notion, Grafana, Confluence and more), supports cross-source SQL JOINs executed locally, and exposes
  the same runtime over the Model Context Protocol (MCP) or a CLI. Coral is open-source (Apache-2.0), self-hosted so queries
  and data never leave your infrastructure, and ISO 27001:2022 certified / GDPR compliant.
url: https://raw.githubusercontent.com/api-evangelist/phoebe/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
x-tier: profiled
x-tier-reason: enriched-from-portfolio-lead
x-company: Phoebe Technology Limited
x-brand: Coral
x-former-domain: https://phoebe.ai
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - 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
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
image: https://withcoral.com/og-image.png
tags:
- Company
- Artificial Intelligence
- Agents
- MCP
- SQL
- Data Access
- Data Integration
- Developer Tools
- Open Source
tags_raw:
- Company
- Ai
- Agents
- Model Context Protocol
- SQL
- Data Access
- Data Integration
- Developer Tools
- Open Source
- Open-Source
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/phoebe-plans-pricing.yml
- url: https://withcoral.com/rss.xml
  type: BlogRSS
- type: VulnerabilityDisclosure
  url: security/phoebe-vulnerability-disclosure.yml
- type: Security
  url: security/phoebe-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/phoebe-domain-security.yml
- type: Website
  url: https://withcoral.com
- type: DeveloperPortal
  url: https://withcoral.com/docs
- type: Documentation
  url: https://withcoral.com/docs
- type: GettingStarted
  url: https://withcoral.com/docs/quickstart
- type: Blog
  url: https://withcoral.com/blog
- type: Pricing
  url: https://withcoral.com/pricing
- type: GitHubOrganization
  url: https://github.com/withcoral
- type: Support
  url: https://withcoral.com/discord
- type: TermsOfService
  url: https://withcoral.com/terms
- type: PrivacyPolicy
  url: https://withcoral.com/privacy
- type: LLMsTxt
  url: llms/phoebe-llms.txt
- type: WellKnown
  url: well-known/phoebe-well-known.yml
- type: SecurityTxt
  url: well-known/phoebe-security.txt
- type: MCPServer
  url: mcp/phoebe-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Packages
  url: packages/phoebe-packages.yml
- type: CLI
  url: cli/phoebe-cli.yml
- type: ChangeLog
  url: changelog/phoebe-changelog.yml
- type: Lifecycle
  url: lifecycle/phoebe-lifecycle.yml
- type: Conventions
  url: conventions/phoebe-conventions.yml
- type: Conformance
  url: conformance/phoebe-conformance.yml
- type: Compliance
  url: conformance/phoebe-conformance.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 17
  pass: local-v1

Coral API — frequently asked questions

How much does the Coral API cost?

Coral publishes its prices; its Open Source plan is Free forever as of 2026-10-07. APIs.io lists 3 pricing plans for Coral, with each plan's price, limits and inclusions under Pricing on this page.

Does Coral have an MCP server?

Yes. APIs.io lists 1 MCP server for Coral: Coral is itself an MCP server: the same local SQL runtime that the CLI drives is exposed to agents over MCP via `coral mcp-stdio`. A separate hosted MCP server (Mintlify) provides documentation search

Is the Coral API ready for AI agents?

Coral has a Kin Score of 38.3 out of 100 (thin) and an Agent Readiness score of 5.8 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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

MCP server

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https://apis.io/mcp

Tools for providers

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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.

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