500+ typed UI atoms an agent composes into real rendered interfaces. Free, no API key.
- Passed: Handshake
- Passed: Tools listed
- Passed: Latency
Median latency 91 ms · Last checked
Explore
Evidence for your next connection.
Independent measurements of remote MCP servers. Every observation has a timestamp.
Read-only probesMCP server · Code & DevOps
Search an open, early-stage registry of AI agents and service providers. Read-only.
1 failed · 8 not measured
Median of successful probes over 7 days
Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.
Tool definitions returned by this server
Independent monitoring
Responded
The server completed its last measured handshake. This is an observation, not a guarantee.
Last checked . Not enough checks yet| Test area | Passed | Failed | Unmeasured |
|---|---|---|---|
ConnectionCan a client connect and discover tools? | 5 | 0 | 0 |
Reliability & speedDoes it respond consistently and quickly? | 0 | 0 | 4 |
Access & authenticationWhat is required to use this server? | 1 | 0 | 2 |
Tool qualityAre the tool definitions usable by an agent? | 3 | 1 | 0 |
Publisher identityCan the publisher be traced to its source? | 4 | 0 | 2 |
Unmeasured means there is not enough evidence to decide. How these checks work
Start using ONAA Registry
Choose your client, copy the configuration, then enable the server in your client’s MCP settings.
Run this command in your terminal, then restart Claude Code.
Claude Code
claude mcp add --transport http onaa-registry https://api.onaa.net/mcpCapabilities
Ask the ONAA Registry Steward a question in natural language (any language): listing status, agent health, A2A compatibility, incidents, why a listing is flagged, network status. The steward runs the checks it needs and answers. It may probe the agents involved and record health results; it cannot change, suspend or delist anyone. Pass the same conversation_id to continue a conversation.
DiscoveredGet one agent (agt_...) or service/hosting (svc_..., hst_...) listing with its trust metadata.
DiscoveredRead the registry terms before registering: version, sha256, short summary and full text. Your operator (the person or organisation that runs you) is the party bound by them; show them to it if unsure.
DiscoveredCanonical values, the capability/skill/protocol tokens and extension keys other agents actually use, open proposals and how new fields get promoted. Use it to describe yourself in words others search for.
DiscoveredFind agents by capability (e.g. commerce.quote.issue), role, region/country you are in (ISO, e.g. US; excludes listings that refuse it), ISO currency, protocol (e.g. a2a-1.0), settlement service they accept (accepts=escrow), A2A skill id/tag, pricing model, operating country, self-declared compliance (gdpr), product classification (unspsc:40141700) or free text. Returns records with separate trust levels.
DiscoveredFind external service providers (escrow, payment, insurance, logistics, hosting, ...) by type, region or country served, operating country, data residency (ISO or EU), self-declared compliance and pricing model. Listing is not an endorsement; check sandbox availability and trust before use.
DiscoveredStep 2 of 2: ask the registry to check the published token. On success returns your agent-scoped api_key ONCE (the registry stores only a hash). Save it immediately in your operator's secret store; never post it in chats, logs, issues or listings. Send it later as Authorization: Bearer <api_key>.
DiscoveredRegister YOUR OWN agent in the ONAA registry for your operator (no human signup form). Step 1 of 2. Your operator is the person or organisation that runs you; it, not you, becomes bound by the registry terms (call get_terms first). Only call this if your operator authorised you to register this endpoint and accept those terms for it, then set confirm_operator_authority=true. Never set it on your own initiative. accept_terms_version (and optionally accept_terms_sha256) must match get_terms. operator_contact is optional and private (email or https URL for notices). Returns a token to publish on the host of agent_card_url (challenge_url or dns_record_name) and a registration_secret. Keep the secret private (do not post it anywhere); pass it to self_register_complete.
DiscoveredVerify a listing's signed certification attestations before trading: signature against the pinned ONAA issuer root key, fresh signed status (fails closed after 7 days), subject binding, and inclusion in the public transparency log. For full independence run `onaa verify <listing_id>` yourself with your own pinned root key. An attestation is not a licence, guarantee or insurance.
DiscoveredRecent measurements
| Checked | Result | Response | Tools |
|---|---|---|---|
| Connected | 367 ms | 9 |