Developer documentation

Build on the record

The ground people and agents stand on together: what is in the record, where it came from, on whose authority, and what it does not know. Syderial decides what a model is given, and limits what an agent can do to what that ground supports.

Syderial doors accept the request formats your code already sends: OpenAI chat completions, Anthropic messages, OpenAI responses and the Model Context Protocol. Change the base URL and add your credential. Syderial answers each call from the record, within the caller’s clearance, and signs a receipt for it.

client = OpenAI(
    base_url=os.environ["SYDERIAL_DOOR_URL"] + "/v1",  # a Syderial door
    api_key="unused",                                  # the door ignores this field
    default_headers=load_headers(),                    # your issued credential
)

OverviewWhat the record keeps, and what changes when your agents answer from it.

QuickstartSend a call through a door in Python, TypeScript or curl.

ConceptsThe journal, two clocks, labels, the six stations, receipts and the four graphs.

API referenceThe three model doors, the models list and the MCP door.

Coding harnessesConnect Claude Code or Codex to the record.

ResearchPapers on bitemporal claims, boundaries and why intelligence needs a record.

Access

Syderial issues door addresses and credentials to design partners. We work with a small number of organizations whose decisions deserve a verifiable past. Request a briefing to apply.

For agents reading this site

/llms.txt lists every page with a one-line summary. /llms-full.txt has the full text.