# Polycode

**Canonical:** https://apis.io/providers/polycode-co-uk/  
**Website:** https://marginalia.polycode.co.uk/  
**APIs profiled:** 2

Polycode Limited is a UK information-technology consultancy (Companies House 10172940, Leeds, incorporated 2016) that operates marginalia, a small public chat experiment built on a shared, provenance-tracked memory graph: a language model synthesises conversations into an OWL-typed graph and questions are answered by narrowing that graph with SPARQL. marginalia publishes a public REST API (OpenAPI 3.0.3, 50 operations at https://marginalia.polycode.co.uk/api — async chat with task polling, session search and history, insights, projects, usage and budget, key-authed private graphs; no key for reads and chat), an A2A 0.3.0 agent card at /.well-known/agent-card.json with a live JSON-RPC endpoint (message/send, message/stream, tasks/get) advertising chat, recall-memory and research-projects skills, an OpenAI-shaped zero-token completion shim, a first-party CLI and the AGPL-3.0 source on GitLab. Visitor contributions are PII-redacted at ingest and republished under CC-BY-SA 4.0; a volatile flag keeps a turn out of shared memory. The corporate apex polycode.co.uk did not resolve when profiled; the product host is the live web presence.

## Kin Score — 47.8 / 100 (developing)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.5 from 47.3).

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 38.6 |
| Contract Governance | 4.5 |
| Operational Transparency | 47.4 |
| Developer Ergonomics | 73.2 |
| Access Clarity | 34.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 42.7 (matched via fallback).

## Agent readiness — 27.2 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (19)

- **marginalia A2A Agent** — Agent2Agent (A2A) surface for marginalia: an agent card served from https://marginalia.polycode.co.uk/.well-known/agent-card.json (protocolVersion 0.3.0, JSONRPC, version 0.2.0)...
- **Polycode Admin API** — The Admin API from Polycode — 3 operation(s) for admin.
- **Polycode Budget API** — The Budget API from Polycode — 1 operation(s) for budget.
- **Polycode Chat API** — The Chat API from Polycode — 3 operation(s) for chat.
- **Polycode Diverts API** — The Diverts API from Polycode — 1 operation(s) for diverts.
- **Polycode Flag API** — The Flag API from Polycode — 1 operation(s) for flag.
- **Polycode Graph API** — The Graph API from Polycode — 11 operation(s) for graph.
- **Polycode Graphs API** — The Graphs API from Polycode — 8 operation(s) for graphs.
- **Polycode Hooks API** — The Hooks API from Polycode — 3 operation(s) for hooks.
- **Polycode Keys API** — The Keys API from Polycode — 2 operation(s) for keys.
- **Polycode Me API** — The Me API from Polycode — 1 operation(s) for me.
- **Polycode Openapi.json API** — The Openapi.json API from Polycode — 1 operation(s) for openapi.json.
- **Polycode Project API** — The Project API from Polycode — 1 operation(s) for project.
- **Polycode Projects API** — The Projects API from Polycode — 3 operation(s) for projects.
- **Polycode Sessions API** — The Sessions API from Polycode — 2 operation(s) for sessions.
- **Polycode Status API** — The Status API from Polycode — 1 operation(s) for status.
- **Polycode Test API** — The Test API from Polycode — 1 operation(s) for test.
- **Polycode Usage API** — The Usage API from Polycode — 2 operation(s) for usage.
- **Polycode Visitor API** — The Visitor API from Polycode — 2 operation(s) for visitor.

## Agentic access (1)

- **Polycode Co Uk Agentic Access** — 50 operations · 24 acting

## Security (3)

- **Polycode Co Uk Authentication** — none/apiKey/openIdConnect/hmac · 4 schemes
- **Polycode Co Uk Domain Security** — TLSv1.3 · DMARC
- **Polycode Co Uk Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Polycode Co Uk Plans Pricing**

## Tags

Chat, Memory, Agents, A2A, Knowledge Graph, Research, Artificial Intelligence, Open Source, Consulting, United Kingdom

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/polycode-co-uk/). Scores are computed from the provider's own public artifacts under a published rubric.