Fossil SCM

Fossil SCM is an open-source, distributed version control system that includes an integrated bug tracking, wiki, and web interface. It provides a self-contained, easy-to-deploy solution for software configuration management, suitable for both small projects and large codebases. The system emphasizes simplicity, reliability, and a single-file repository model, making it a coherent alternative to other SCM tools.

Fossil SCM is listed with 4 APIs on the APIs.io network, including Home API, JSON API, Wikis API, and 1 more. Tagged areas include Version Control, Open Source, SCM, Distributed, and Configuration Management.

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

Fossil SCM’s developer surface includes changelog, authentication, documentation, quickstart, support, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.3/100 emerging ▬ flat Agent 17/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

4 APIs

Version Control Open Source SCM Distributed Configuration Management

Kin Score

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

Composite quality — 19.3/100 · emerging

Contract Quality 4.0 / 19

Developer Ergonomics 2.9 / 15

Access Clarity 0.0 / 15

Operational Transparency 1.5 / 10

Contract Governance 2.0 / 9

Discoverability 4.4 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/fossil-scm/"><img src="https://apis.io/badge/fossil-scm/card.svg" alt="Fossil SCM on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Contract Quality scores 21.4 — up to +19.7 composite points
Developer Ergonomics scores 19.0 — up to +16.2 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/fossil-scm/apis.yml: open an issue on github.com/api-evangelist/fossil-scm 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 4

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

Fossil SCM API

Fossil SCM provides a web interface and command-line tool but does not expose a public REST API.

Fossil SCM Home API

The Home API from Fossil SCM — 1 operation(s) for home.

Fossil SCM JSON API

The Json API from Fossil SCM — 2 operation(s) for json.

Fossil SCM Wikis API

The Wikis API from Fossil SCM — 1 operation(s) for wikis.

Semantic Vocabularies 1

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

Fossil Scm Context

2 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fossil SCM API Rules

12 rules · 10 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

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

PostJsonUserGetRequest

1 properties

JSON SCHEMA

PostJsonUserGetResponse

5 properties

JSON SCHEMA

Security Posture 2

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

Fossil Scm Authentication

2 schemes

SECURITY

Fossil Scm Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

QuickStart

QuickStart

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Company 2

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Other 1

Properties that don't map to a standard resource type

Download

Download

Source (apis.yml)

aid: fossil-scm
name: Fossil SCM
description: Fossil SCM is an open-source, distributed version control system that includes an integrated bug tracking, wiki,
  and web interface. It provides a self-contained, easy-to-deploy solution for software configuration management, suitable
  for both small projects and large codebases. The system emphasizes simplicity, reliability, and a single-file repository
  model, making it a coherent alternative to other SCM tools.
url: https://raw.githubusercontent.com/api-evangelist/fossil-scm/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)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-09-22'
modified: '2026-10-06'
tags:
- Version Control
- Open Source
- SCM
- Distributed
- Configuration Management
tags_raw:
- Version-Control
- Open-Source
- SCM
- Distributed
- Configuration-Management
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://fossil-scm.org/home/timeline.rss
  type: BlogRSS
- type: Spectral
  url: rules/fossil-scm-rules.yml
- type: JSONLD
  url: json-ld/fossil-scm-context.jsonld
- type: Vocabulary
  url: vocabulary/fossil-scm-vocabulary.yml
- type: DataModel
  url: data-model/fossil-scm-data-model.yml
- type: ChangeLog
  url: changelog/fossil-scm-changelog.yml
- type: Authentication
  url: authentication/fossil-scm-authentication.yml
- type: Conformance
  url: conformance/fossil-scm-conformance.yml
- type: DomainSecurity
  url: security/fossil-scm-domain-security.yml
- type: Website
  url: https://fossil-scm.org/
- type: Documentation
  url: https://fossil-scm.org/home/doc/trunk/www/index.wiki
- type: Download
  url: https://fossil-scm.org/home/uv/download.html
- type: QuickStart
  url: https://fossil-scm.org/home/doc/trunk/www/quickstart.wiki
- type: Support
  url: https://fossil-scm.org/forum/forum
apis:
- name: Fossil SCM API
  description: Fossil SCM provides a web interface and command-line tool but does not expose a public REST API.
  humanURL: https://fossil-scm.org/home/doc/trunk/www/index.wiki
  aid: fossil-scm:fossil-scm-api-2
- aid: fossil-scm:fossil-scm-home-api
  name: Fossil SCM Home API
  description: The Home API from Fossil SCM — 1 operation(s) for home.
  humanURL: https://fossil-scm.org/home/doc/trunk/www/index.wiki
  baseURL: https://fossil.wanderinghorse.net
  tags:
  - Homes
  tags_raw:
  - Home
  properties:
  - type: OpenAPI
    url: openapi/fossil-scm-home-api-openapi.yml
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-response-schema.json
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-request-schema.json
- aid: fossil-scm:fossil-scm-json-api
  name: Fossil SCM JSON API
  description: The Json API from Fossil SCM — 2 operation(s) for json.
  humanURL: https://fossil-scm.org/home/doc/trunk/www/index.wiki
  baseURL: https://fossil.wanderinghorse.net
  tags:
  - JSON
  tags_raw:
  - Json
  properties:
  - type: OpenAPI
    url: openapi/fossil-scm-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-response-schema.json
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-request-schema.json
- aid: fossil-scm:fossil-scm-wikis-api
  name: Fossil SCM Wikis API
  description: The Wikis API from Fossil SCM — 1 operation(s) for wikis.
  humanURL: https://fossil-scm.org/home/doc/trunk/www/index.wiki
  baseURL: https://fossil.wanderinghorse.net
  tags:
  - Wikis
  properties:
  - type: OpenAPI
    url: openapi/fossil-scm-wikis-api-openapi.yml
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-response-schema.json
  - type: JSONSchema
    url: json-schema/fossil-scm-post-json-user-get-request-schema.json
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Fossil SCM is a version control system without a public API.
  evidence:
  - url: https://fossil-scm.org/home/doc/trunk/www/index.wiki
    status: 200
  checked: 2026-09-22
x-enrichment:
  date: '2026-09-22'
  status: enriched
  artifacts_added: 14
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local

Fossil SCM API — frequently asked questions

Does Fossil SCM have an API?

Yes. APIs.io lists 4 APIs from Fossil SCM, including Fossil SCM API, Fossil SCM Home API and Fossil SCM JSON API, and 1 more.

Is there an OpenAPI specification for the Fossil SCM API?

Yes. APIs.io indexes 3 OpenAPI specifications for Fossil SCM, each linked for download from this page.

How do I authenticate with the Fossil SCM API?

Fossil SCM uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Fossil Scm Authentication.

Is the Fossil SCM API ready for AI agents?

Fossil SCM has a Kin Score of 19.3 out of 100 (emerging) and an Agent Readiness score of 17.3 (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

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/fossil-scm"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/fossil-scm/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/fossil-scm/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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