Mercurial

Mercurial is a free, distributed source control management tool. It efficiently handles projects of any size, offering fast, intuitive commands and extensibility through extensions. Written primarily in Python with parts in C and Rust, Mercurial runs on all major platforms and is open‑source under GPL‑2.0 or later.

Mercurial is profiled on the APIs.io network. Tagged areas include Company, Version Control, Open Source, Distributed, and Cross-Platform.

Mercurial’s developer surface includes engineering blog, changelog, support, documentation, getting-started guide, and 5 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

13.0/100 emerging ▬ flat Agent 0/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

0 APIs

Company Version Control Open Source Distributed Cross-Platform

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 13.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 6.1 / 17

Access Clarity 0.0 / 17

Operational Transparency 2.3 / 11

Contract Governance 0.0 / 10

Discoverability 3.8 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 7

Rate-Limit Signaling 0 / 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 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/.

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/mercurial: 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 →

Security Posture 1

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

Mercurial Domain Security

TLSv1.3

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Company 2

The organization behind the API

Blog

Blog

Website

Website

Source (apis.yml)

aid: mercurial
name: Mercurial
description: Mercurial is a free, distributed source control management tool. It efficiently handles projects of any size,
  offering fast, intuitive commands and extensibility through extensions. Written primarily in Python with parts in C and
  Rust, Mercurial runs on all major platforms and is open‑source under GPL‑2.0 or later.
url: https://raw.githubusercontent.com/api-evangelist/mercurial/refs/heads/main/apis.yml
x-type: company
x-source: harvest:version-control
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-22 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-09-22'
modified: '2026-10-06'
x-docs-platform: sphinx
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Company
- Version Control
- Open Source
- Distributed
- Cross-Platform
tags_raw:
- Company
- VersionControl
- OpenSource
- Distributed
- CrossPlatform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://www.mercurial-scm.org/news
  type: Blog
- type: ChangeLog
  url: changelog/mercurial-changelog.yml
- type: SDKs
  url: packages/mercurial-packages.yml
- type: Packages
  url: packages/mercurial-packages.yml
- type: Support
  url: https://www.mercurial-scm.org/help/topics.html
- type: GitHubOrganization
  url: https://github.com/mercurial-scm
- type: DomainSecurity
  url: security/mercurial-domain-security.yml
- type: Website
  url: https://www.mercurial-scm.org/
- type: Documentation
  url: https://www.mercurial-scm.org/guide
- type: GettingStarted
  url: https://www.mercurial-scm.org/guide
apis: []
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The Mercurial website provides HTML documentation but no machine‑readable API specification.
  evidence:
  - url: https://www.mercurial-scm.org/guide
    status: 200
  checked: 2026-09-22
x-enrichment:
  date: '2026-09-22'
  status: enriched
  artifacts_added: 6
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local

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