Runtime Cloud docs agent bronze

withruntime.com

“Answers questions about Runtime Cloud, Linux sandboxes (Firecracker microVMs) for AI agents, from its public documentation: what it costs, how to create and run sandboxes, the SDKs, CLI and MCP server, limits, and how to move from another sandbox provider. It reads the docs only; it does not run sandboxes or need an account.

a2a https://withruntime.com/a2a talk to it https://withruntime.com/.well-known/agent-card.json its card

🇺🇸 US · Amazon.com, Inc. Checked 1d ago pushNotifications, stateTransitionHistory, streaming

we checked this the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 17 Dec 2026 as of our check on 12 Nov 2026.

Control of the hostname was checked; nothing about who operates it.

Key RSA 2048, signed SHA256-RSA, issued via YR1 under ISRG Root X1 — classical, as every publicly trusted certificate is today.

Names on this certificate (1)

withruntime.com.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 12 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
This host also publishes an ARD catalog (/.well-known/ai-catalog.json) declaring 7 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified.
AI-facing documents: Publishes /llms.txt — “Runtime Cloud” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 5 Nov 2026

View verification details

Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇺🇸 US · Amazon.com, Inc. (AS16509)
Last checked: 1d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of withruntime.com controls every word below.

Answer from Runtime's docs

Finds the Runtime Cloud guides that answer a question and returns each with its address and the passage that matched.

docssandboxesmicrovmpricingsdk

Examples it gives

How is CPU billed?
How do I fork a running sandbox?
Move my project from E2B to Runtime

What its catalog declares

From the ARD catalog this host publishes at /.well-known/ai-catalog.json. The operator controls every entry; agenttru.st verified that the catalog exists and parses, and nothing about what the entries say.

Runtime Cloud MCP server

mcp-server-cardtrust manifest

Linux microVM sandboxes for AI agents: run commands, files, processes, pause and wake. Remote over Streamable HTTP at https://api.withruntime.com/mcp, with OAuth sign-in.

https://withruntime.com/.well-known/mcp/server-card.json

Runtime Cloud docs MCP server

mcp-server-cardtrust manifest

Search and read Runtime Cloud's guides over MCP at https://withruntime.com/mcp. Public: no account or key.

https://withruntime.com/.well-known/mcp/docs-server-card.json

Runtime Cloud docs agent (A2A)

a2a-agent-cardtrust manifest

Answers questions about Runtime Cloud from its docs over A2A JSON-RPC at https://withruntime.com/a2a. Public: no account or key.

https://withruntime.com/.well-known/agent-card.json

Runtime Cloud API

openapitrust manifest

One HTTP API for every Runtime Cloud product: sandboxes, images, volumes, snapshots, jobs, keys and billing. Bearer keys, JSON, idempotent writes.

https://api.withruntime.com/v1/openapi.json

runtime-sandboxes

agent-skills+mdtrust manifest

Run code in a Runtime Cloud sandbox instead of on this machine. Use when a task needs untrusted or unfamiliar code run, packages installed, a long job, a clean Linux machine, several experiments at once, or a web app shared at a URL.

https://withruntime.com/.well-known/agent-skills/runtime-sandboxes/SKILL.md

switch-to-runtime

agent-skills+mdtrust manifest

Move a project's sandbox code from another provider (E2B, Daytona, Modal, Vercel Sandbox, Blaxel, Cloudflare Sandbox, Fly, Docker) to Runtime Cloud, test it on the free trial and report the monthly saving. Use when the user asks to switch, migrate or compare sandbox providers, or to set up Runtime for a project.

https://withruntime.com/.well-known/agent-skills/switch-to-runtime/SKILL.md

And 1 more entry in the catalog, not shown here.

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: Runtime — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Card completeness: complete all eight fields required by a2a.proto v1.0

View all card details

Capabilities: pushNotifications stateTransitionHistory streaming
Agent card: https://withruntime.com/.well-known/agent-card.json

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