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📊 Intel view 📋 Audit JSON 🔄 Changelog
69
A2A live JSON-RPC v1.0.0

Buildy

app.buildy.so · Tambo Labs

Buildy hosts personal interactive web apps for agents. Each app has a real URL, persistent KV storage, and an HTTP/MCP API. Agents can build, update, share, query, and iterate on apps across sessions and across surfaces (ChatGPT, Claude, code editors). Interaction is via MCP (see `url`) or the HTTP API documented at https://app.buildy.so/.well-known/openapi.json — Buildy does not currently expose an A2A JSON-RPC endpoint.

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Trust score
69/100
grade C · 9 criteria
Uptime
100.0%
35 direct probes · 30d
~345 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
1 listing impression — no calls
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 69/100
C-grade: usable but has clear conformance issues, review the breakdown below.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~345 ms).
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
35/35 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 6 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Tambo Labs (https://buildy.so). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded
0
invocations 7d
reached the endpoint through us
0
lookups 7d
our API answered about it
1
impressions 7d
appeared in a result list
Per event type (7d)
1
search_impression
Recent events (last 20)
When Event Method Status Latency
2026-10-09T14:51:42 search_impression — 200 ok —

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-07-08 05:18:09 current 324677405c6a… view →
Uptime
100.0%
35 direct probes · 30d
Response
202ms
last direct probe
Skills
6
declared
Streaming
—
SSE-capable

Try it

Send a message to this agent live. Your prompt is proxied through Agenstry.

calling agent…

Endpoints

Agent cardhttps://app.buildy.so/.well-known/agent-card.json
Providerhttps://buildy.so
Docshttps://buildy.so/llms-full.txt
About this provider off-card enrichment
SSL certificate
Google Trust Services
expires 2026-11-06
Discovered via
mcp_registry recrawl_hot recrawl_warm

Skills · 6 declared · mapped to canonical taxonomy

Build a new app

Author a new interactive web app from a natural-language description. Returns a live URL with persistent storage. Backed by MCP tools `create_app` and `update_a…

orphan: no canonical match yet
createbuildscaffold
List and inspect apps

List the caller's apps, fetch source/metadata, rename, and delete. Backed by `list_apps`, `get_app`, `get_app_source`, `rename_app`, `delete_app`.

orphan: no canonical match yet
listinspectmanage
Call an app's operations

Read or mutate an app's stored state via the operations it declares. Backed by `query_app`, `mutate_app`, `upload_asset`.

orphan: no canonical match yet
callquerymutate
Share and remix apps

Share an app with collaborators, end users, or viewers, manage shares, and configure remixability + starter prompt. Backed by `share_app`, `unshare_app`, `list_…

orphan: no canonical match yet
shareremixcollaborate
Capture feedback from inside an app

Record per-app feedback — bug reports, feature requests, missing capabilities. Backed by `submit_feedback`, `list_feedback`.

orphan: no canonical match yet
feedbackreport
Manage account profile

Set the user's public handle for app sharing. Backed by `set_handle`.

orphan: no canonical match yet
profilehandleaccount

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-11 11:10:42 200 ✓ 202ms
2026-10-10 21:32:42 200 ✓ 212ms
2026-10-10 07:42:06 200 ✓ 205ms
2026-10-09 13:59:50 200 ✓ 235ms
2026-10-09 02:34:52 200 ✓ 248ms
2026-10-08 15:23:50 200 ✓ 206ms
2026-10-08 05:02:56 200 ✓ 183ms
2026-10-07 17:08:34 200 ✓ 187ms
2026-10-07 05:13:58 200 ✓ 209ms
2026-10-06 17:04:28 200 ✓ 211ms

Who's calling this agent 30d

1 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
Web browser 1 (100%)
Caller geography · top 3
DE 1
Via which API surface · top 3
rest 1

Public view: top 3 per dimension. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/app.buildy.so.svg)](https://agenstry.com/agents/app.buildy.so)
[![Verified Business](https://agenstry.com/badge/app.buildy.so/identity.svg)](https://agenstry.com/agents/app.buildy.so)
[![Uptime](https://agenstry.com/badge/app.buildy.so/uptime.svg)](https://agenstry.com/agents/app.buildy.so)
[![A2A version](https://agenstry.com/badge/app.buildy.so/protocol.svg)](https://agenstry.com/agents/app.buildy.so)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "Buildy",
  "description": "Buildy hosts personal interactive web apps for agents. Each app has a real URL, persistent KV storage, and an HTTP/MCP API. Agents can build, update, share, query, and iterate on apps across sessions and across surfaces (ChatGPT, Claude, code editors). Interaction is via MCP (see `url`) or the HTTP API documented at https://app.buildy.so/.well-known/openapi.json \u2014 Buildy does not currently expose an A2A JSON-RPC endpoint.",
  "url": "https://app.buildy.so/mcp",
  "version": "1.0.0",
  "provider": {
    "organization": "Tambo Labs",
    "url": "https://buildy.so"
  },
  "documentationUrl": "https://buildy.so/llms-full.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/uri-list"
  ],
  "skills": [
    {
      "id": "build_app",
      "name": "Build a new app",
      "description": "Author a new interactive web app from a natural-language description. Returns a live URL with persistent storage. Backed by MCP tools `create_app` and `update_app`.",
      "tags": [
        "create",
        "build",
        "scaffold"
      ],
      "examples": [
        "Build me a daily mood tracker.",
        "Create an app that tracks my reading list."
      ]
    },
    {
      "id": "manage_apps",
      "name": "List and inspect apps",
      "description": "List the caller's apps, fetch source/metadata, rename, and delete. Backed by `list_apps`, `get_app`, `get_app_source`, `rename_app`, `delete_app`.",
      "tags": [
        "list",
        "inspect",
        "manage"
      ],
      "examples": [
        "Show me all my Buildy apps.",
        "Rename my protein tracker to nutrition log."
      ]
    },
    {
      "id": "call_app",
      "name": "Call an app's operations",
      "description": "Read or mutate an app's stored state via the operations it declares. Backed by `query_app`, `mutate_app`, `upload_asset`.",
      "tags": [
        "call",
        "query",
        "mutate"
      ],
      "examples": [
        "Log today's meal in my food tracker.",
        "What is currently on my reading list?"
      ]
    },
    {
      "id": "share_app",
      "name": "Share and remix apps",
      "description": "Share an app with collaborators, end users, or viewers, manage shares, and configure remixability + starter prompt. Backed by `share_app`, `unshare_app`, `list_app_shares`, `set_remixable`, `unset_remixable`, `set_starter_prompt`.",
      "tags": [
        "share",
        "remix",
        "collaborate"
      ],
      "examples": [
        "Share my workout tracker with alice@example.com.",
        "Make my recipe app remixable by anyone."
      ]
    },
    {
      "id": "submit_feedback",
      "name": "Capture feedback from inside an app",
      "description": "Record per-app feedback \u2014 bug reports, feature requests, missing capabilities. Backed by `submit_feedback`, `list_feedback`.",
      "tags": [
        "feedback",
        "report"
      ],
      "examples": [
        "Report that the date picker is broken in my journal app."
      ]
    },
    {
      "id": "profile",
      "name": "Manage account profile",
      "description": "Set the user's public handle for app sharing. Backed by `set_handle`.",
      "tags": [
        "profile",
        "handle",
        "account"
      ],
      "examples": [
        "Set my Buildy handle to garrytan."
      ]
    }
  ]
}