aid: chessigma
name: Chessigma
image: https://www.chessigma.com/opengraph-image.png
description: Chessigma provides a free, no‑auth API for chess game analysis and daily puzzles. Users can submit PGN games, retrieve engine analysis,
  calculate rating changes, and access training puzzles without signup or rate‑limited keys. The platform runs Stockfish in the browser, offering
  compute‑free, unlimited analysis for Chess.com, Lichess and uploaded PGN files.
url: https://raw.githubusercontent.com/api-evangelist/chessigma/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-05 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-05'
modified: '2026-10-05'
tags:
- Company
- Chess
- API
- Free
- NoAuth
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/chessigma-agentic-access.yml
- type: Plans
  url: plans/chessigma-plans-pricing.yml
- type: Spectral
  url: rules/chessigma-rules.yml
- type: JSONLD
  url: json-ld/chessigma-context.jsonld
- type: Vocabulary
  url: vocabulary/chessigma-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/chessigma-data-model.yml
- type: ErrorCatalog
  url: errors/chessigma-problem-types.yml
- type: Conformance
  url: conformance/chessigma-conformance.yml
- type: LLMsTxt
  url: llms/chessigma-llms.txt
- type: WellKnown
  url: well-known/chessigma-well-known.yml
- type: Hosts
  url: hosts/chessigma-hosts.yml
- type: Vendors
  url: vendors/chessigma-vendors.yml
- type: SDKs
  url: packages/chessigma-packages.yml
- type: Packages
  url: packages/chessigma-packages.yml
- type: DomainSecurity
  url: security/chessigma-domain-security.yml
- type: Website
  url: https://www.chessigma.com
- type: Documentation
  url: https://www.chessigma.com/developers
- type: Blog
  url: https://www.chessigma.com/blog
- type: Pricing
  url: https://www.chessigma.com/pricing
- type: TermsOfService
  url: https://www.chessigma.com/tos
- type: PrivacyPolicy
  url: https://www.chessigma.com/privacy-policy
- type: Support
  url: https://www.chessigma.com/contact
apis:
- aid: chessigma:chessigma-daily-puzzle-api
  name: Chessigma Daily Puzzle API
  description: The Daily Puzzle API from Chessigma — 1 operation(s) for daily puzzle.
  humanURL: https://www.chessigma.com/developers
  baseURL: https://www.chessigma.com/public-api/v1
  tags:
  - Daily Puzzle
  properties:
  - type: OpenAPI
    url: openapi/chessigma-daily-puzzle-api-openapi.yml
  - type: JSONSchema
    url: json-schema/chessigma-daily-puzzle-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-elo-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-analysis-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-schema.json
- aid: chessigma:chessigma-elo-calculator-api
  name: Chessigma Elo Calculator API
  description: The Elo Calculator API from Chessigma — 1 operation(s) for elo calculator.
  humanURL: https://www.chessigma.com/developers
  baseURL: https://www.chessigma.com/public-api/v1
  tags:
  - Elo Calculator
  properties:
  - type: OpenAPI
    url: openapi/chessigma-elo-calculator-api-openapi.yml
  - type: JSONSchema
    url: json-schema/chessigma-daily-puzzle-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-elo-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-analysis-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-schema.json
- aid: chessigma:chessigma-game-api
  name: Chessigma Game API
  description: The Game API from Chessigma — 2 operation(s) for game.
  humanURL: https://www.chessigma.com/developers
  baseURL: https://www.chessigma.com/public-api/v1
  tags:
  - Game
  properties:
  - type: OpenAPI
    url: openapi/chessigma-game-api-openapi.yml
  - type: JSONSchema
    url: json-schema/chessigma-daily-puzzle-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-elo-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-analysis-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-response-schema.json
  - type: JSONSchema
    url: json-schema/chessigma-game-submission-schema.json
x-submission-notes: Provider entity Arche Labs Ltd t/a Chessigma. Root soft-404s, so probe artifacts by content not status.
x-submission-probe: openapi.json 200 (OAS 3.1, server /public-api/v1); /public-api/v1/daily-puzzle 200 JSON; /.well-known/api-catalog 200 linkset;
  llms.txt 200; /api/mcp initialize 200 (chessigma-mcp 2.0.0); invented path redirects to homepage (soft-404 on www root).
x-submitted-by: mehdi@chessigma.com (apis.io/add, 2026-10-03T13:56:11.018Z)
x-enrichment:
  date: '2026-10-05'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local