Change one URL.
If your host, IDE or agent already reads the official MCP registry, it can read tashan instead and get the same payload with a measurement attached. No SDK. No integration. No awareness of us beyond a base URL.
↓
tashan.sh/v0.1/servers
What you get that you did not have
Every entry keeps its registry shape and gains one namespaced block, so nothing you already parse changes:
"io.modelcontextprotocol.registry/official": { … unchanged … },
"sh.tashan/measurement": {
"score": 86, "adoption": 84, "upkeep": 98, "freshness": 97,
"vitality": "active", "expertise": "solid",
"evidence": "32 517 npm downloads/week",
"url": "https://tashan.sh/capability/…", "measured_at": "…",
"settled": { "usd": 166658.82, "payments": 8718732,
"protocol": "x402", "chain": "base" }
}
}
settled appears only where the capability publishes a payment address and we have asked the chain about it. A zero there is a measurement — that address has never been paid — and an absent block is not a finding. It is deliberately not part of the score: who gets paid explains why.
12,662 measured servers today. Unscored servers are absent rather than zero — we never publish a number we did not measure.
One score, one request
If you only need a number at decision time, /v0.1/scores is a flat map — name to [score, vitality, evidence] — so you are not pulling the full catalogue to check one package.
Terms
- Free to ask. Every score, and every risk we hold about a capability you name. No key, no quota, CC BY 4.0. We want you calling it. That is the distribution.
- Priced to assemble. The kit with versions pinned, the advisory detail and the fix, the history behind a row. A licence, or an agent pays per call with x402. No account.
- Never pay-to-rank. Nobody can buy a score, a position or a removal. If that ever changed, the number would be worth nothing to you.
- Not a security audit. A tashan score measures adoption and upkeep. It is not a CVE scan or a code review, and it should not be presented to your users as one.
If you need a promise
The static files above carry no uptime or schema-stability commitment, because they are files. If you are shipping tashan inside a product and need a keyed endpoint, versioning guarantees or change webhooks, that is a conversation: [email protected].
For agents: ask a question, pay for one answer
A licence assumes a human — sign up, hold a key, amortise a month. An agent deciding once has none of that.
These endpoints answer in one request, and price in one request.
POST /v0.1/kit — name a job, get something that runs
-H 'content-type: application/json' \
-d '{"task":"web-scraping","client":"claude-code"}'
- Free — the ranked shortlist for that job, plus everything we excluded and why. An exclusion is a risk, and risks are never behind a paywall.
- $0.05 — add
{"kit": true}and it is assembled: every pick pinned to the version the advisory scan cleared, and a config for your host.
An unpinned config is an unverified one. The verification is the product.
POST /v0.1/audit — hand over a config, get back what is rotting
- Free — every risk we hold about every capability you name: advisories at the version you would install today, deprecation, archived repos, one maintainer left.
- $0.01 — add
{"history": true}for the score series behind each row and its direction of travel.
Direction is the one thing a static index cannot tell you.
Paying without an account
Every paid endpoint answers an unauthenticated caller with HTTP 402 and the terms in the body: price, checkout link, and the free endpoints answering the same question.
Callers with a wallet can pay per request over
x402 v2, instead of
holding a subscription. The accepts array is absent until settlement is live here
— quoting a payment we cannot verify would waste your signature.
What is not for sale
We do not sell anyone’s skill or server content. A capability is its author’s work under their licence; every pick links to its source and you fetch it from them.
What is paid for is ours: the measurement, the selection over it, the version that is clean today, and the assembly. Nobody can pay to change a score, a rank, or a listing.