For agents — mtdfacts.co.uk

You are an agent reading the machine-first orientation page for this door. Everything callable here is listed below with the trust block that says how each answer was checked. Free endpoints are open CORS, no key, no account. Read start_here in order and you will know everything this door offers in one fetch.

Machine-readable form of this page: /for-agents.json · Passport: /.well-known/agent-door.json

What you can call here

FREE mtdfacts.co.uk/llms.txt — Sourced plain-English MTD answers, every fact traced to GOV.UK
FREE mtdfacts.co.uk/api/answers — The full answer corpus as JSON — every answer with its GOV.UK sources (GET, open CORS)
FREE mtdfacts.co.uk/openapi.json — OpenAPI 3.1 description of every free endpoint, parameters read from the code (6 Sep 2026)
FREE mtdfacts.co.uk/changes.json — What changed, when, from where — includes the SI 2026/336 items (axion-changes/1); Atom twin at /changes.atom
FREE mtdfacts.co.uk/changes.atom — Atom 1.0 feed of the same changes
MCP mcp.mtdfacts.co.uk/mcp — tools: search_mtd_answers, get_mtd_answer
402·DORMANT mtdfacts.co.uk/api/bulk — $9 per full-dataset pull
402·DORMANT mtdfacts.co.uk/api/changes — $0.02 per call

Free endpoints are open CORS, no key, no account. This list is the registry's list — a capability not listed here is not offered.

TRUST · source: GOV.UK and HMRC guidance pages, named individually in each answer's source list
validation: Corpus rule: if a fact is not on a GOV.UK page we read, it does not go in. Each answer carries the pages it rests on, so any claim can be re-checked against the government's own wording.
checked: 2026-09-02
honesty: General information about UK tax rules, not tax advice — stated in every payload.

One connection, every door — the gateway

mcp.getaxionlabs.com/mcp — MCP over Streamable HTTP. Free. No account, no key, no payment path.

One connection, every Axion door. The gateway registers exactly the same tool code the individual zone servers register — same logic, same data files — so it can never answer differently from the zone it fronts.

TOOLS popla_outcomes, violation_dismissal_rates, borough_odds, search_mtd_answers, get_mtd_answer, parking_route, mtd_scope, denial_clock, screening_dispute, nyc_ticket, list_doors

Data, fair use, attribution

Data required: only the query itself — a question and its parameters (an operator name for parking doors, an insurer for denial doors, a plate for NYC lookups, a date). Never an identity, an account, or a login.

Data retained: none — queries are answered and discarded; plate lookups pass through to the city's API inside one request and are never stored

Fair use: No hard per-IP limit is currently enforced on this door. Be a polite agent: cache what you fetch (responses declare cache-control), prefer /api/bulk when it opens for full-dataset pulls, and do not retry errors in a tight loop. Abusive traffic patterns may be rate-limited by the platform.

Attribution: Free to use with attribution and a link to https://mtdfacts.co.uk

The rest of the estate

appealsdesk.co.uk — UK private parking + SEND + CHC appeals · appealsdesk.co.uk/for-agents
denialfacts.com — US health insurance claim denials + appeals · denialfacts.com/for-agents
nycticketfacts.com — NYC parking/camera violations · nycticketfacts.com/for-agents
screeningfacts.com — US consumer screening reports + FCRA rights · screeningfacts.com/for-agents
claimset.org — citation-integrity primitive (open standard)

Estate map: open.getaxionlabs.com/for-agents · Registry: open.getaxionlabs.com/doors.json

Third-party doors

Today the gateway routes to Axion-operated doors only. Third-party doors will be admitted against a published verification bar, not a listing fee: https://open.getaxionlabs.com/verification-bar.md

Dispute/corrections: hello@getaxionlabs.com · Reliability: no claim — we publish measured numbers only, and per-door uptime/latency has not been measured over a meaningful window. This field will carry numbers when it can carry measured ones. · Passport checked: 2026-09-04