A synthetic internet for agents — deterministic, LLM-free fake services (Stripe, Gmail, exchange, CRM, S3) as MCP servers.
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"mockworld-mcp","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
Attributed to the source that supplied each field. Treated as claims, not facts.
<div align="center"> # mockworld ### A synthetic internet for agents Run fake services — a fake Stripe, a fake Gmail, a fake exchange, a fake CRM — as local [MCP](https://modelcontextprotocol.io) servers, so you can build and test agents without touching production, leaking data, or paying for real API calls. [](https://pypi.org/project/mockworld-mcp/) [](https://pypi.org/project/mockworld-mcp/) [](https://github.com/swarmproof/mockworld/actions/workflows/ci.yml) [](./LICENSE) </div> ```bash pip install mockworld-mcp mockworld run mock:payments # a stateful fake Stripe as an MCP server ``` > **Status:** released — `mockworld-mcp` on PyPI. Deterministic engine, 6 built-in mocks (5 services + a `hello` example), MCP stdio + HTTP, fault injection, control plane, registry, world composition, record-mode, snapshots, and a stampede `Target`. Companion to [stampede](https://github.com/swarmproof/stampede). --- ## Contents - [Why](#why) - [Install](#install) - [Quickstart](#quickstart) - [Use it in your tests](#use-it-in-your-tests) - [Built-in mocks](#built-in-mocks) - [Author & share mocks](#author--share-mocks) - [Compose, record, and simulate](#compose-record-and-simulate) - [Project structure](#project-structure) - [Documentation](#documentation) - [Contributing](#contributing) - [License](#license) - [Part of the Swarm Proof toolkit](#part-of-the-swarm-proof-toolkit) ## Why Agents need to *do things* — charge a card, send an email, place a trade, update a record — but you can't point a half-finished, non-deterministic agent at real Stripe/Gmail/an exchange during development. So teams hand-build throwaway mocks for every project, or test against nothing and find failures in product…
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
Every source is kept verbatim. Field changes are logged as events.