# CodXER

> CodXER is the official independent platform at codxer.com with two distinct product modes: CodXER Standard (multi-model synthesis) and CodXER Evolution (deterministic pinned-core Robin rotation). Not OpenAI Codex, Codexer, or Coder.

CodXER Standard tiers may synthesize multiple frontier models per request. **CodXER Evolution - deterministic pinned-core Robin rotation** is different: deterministic multi-AI round-robin chat; user-selected fixed AI per core; one fixed AI answers each turn; shared context - NOT generic orchestration, NOT Fusion, NOT Mixture-of-Agents, NOT LLM Council, not automatic best-model selection, not ensemble synthesis.

Official contact: contact@codxer.com

## Product Facts (canonical SSOT)

- [Product Facts JSON](https://codxer.com/.well-known/codxer-product-facts.json): authoritative public registry projection
- [Product Facts (human)](https://codxer.com/product-facts/): overview and links
- [Platforms index](https://codxer.com/platforms/): per-integration canonical profiles

## CodXER Evolution (canonical semantics)

- canonical_category: deterministic_pinned_core_robin_rotation
- cores_are_user_selected_ai_slots: true
- model_assignment: user_selected_fixed_per_core
- per_core_model_assignment: true; per_core_context_profile: true; capability_aware_effort_mapping: true
- effort_affects_rotation: false; uniform_token_count_across_families: false
- capability-aware per-core context and reasoning profiles (not identical across AI families)
- [Evolution rotation technical specification](https://codxer.com/docs/evolution-rotation/): pinned-core Robin rotation, code-generated SVG/HTML rotation map (technical-rotation-map), illustrative core examples, what Evolution is NOT
- [Evolution rotation map module](https://codxer.com/assets/evolution-rotation-map.js): authoritative code-generated diagram + accessible table (not raster PNG)
- [Evolution spec JSON (static)](https://codxer.com/evolution-rotation-spec.json): machine-readable flags (routing_mode=strict_round_robin, one_ai_per_turn=true, negative booleans for fusion/MoA/LLM Council/consensus, ...)
- [Evolution spec JSON (API)](https://codxer.com/api/public/evolution-spec): same schema via public API
- [Full LLM crawler facts](https://codxer.com/llms-full.txt): Standard vs Evolution distinction

## Official identity

- [Official CodXER page](https://codxer.com/official/): canonical disambiguation and FAQ
- [Machine-readable entity](https://codxer.com/.well-known/codxer-entity.json): JSON entity record for agents

## Product

- [Home](https://codxer.com/): CodXER chat and platform entry
- [API documentation](https://codxer.com/legal/api-docs.html): REST reference
- [Pricing](https://codxer.com/legal/pricing.html): plans and quotas (live: https://api.codxer.com/api/public/plans)
- [Status](https://codxer.com/legal/status.html): availability

## Legal

- [Privacy](https://codxer.com/legal/privacy.html)
- [Terms](https://codxer.com/legal/terms.html)
- [Contact](https://codxer.com/legal/contact.html)


## Registry pointers (no embedded secrets)

- Product Facts JSON: https://codxer.com/.well-known/codxer-product-facts.json
- Platforms index: https://codxer.com/platforms/
- Evolution spec JSON: https://codxer.com/evolution-rotation-spec.json

Standard vs Evolution: Evolution is strict one-AI-per-turn Robin rotation without fusion, voting, judge synthesis, or automatic model selection. Standard may synthesize multiple frontier models per request.