---
title: Gecko
description: The verification layer between your API and the agents calling it.
canonical: https://geckovision.tech/
last_updated: 2026-09-01
---

# Gecko

> The verification layer between your API and the agents calling it.

**For API providers and agent builders**

## Your spec says what your API can do. Gecko shows what it does

> Every artifact an API ships describes what it can do. None of them shows what it does

OpenAPI describes shapes. MCP describes callable tools. Arazzo describes sequences. All three are better descriptions than a docs site, and all three stop at the same wall. They tell an agent what is possible, never what happens: what comes back, what it costs, what breaks, what the second call needs from the first

So an agent integrating today reads a menu and guesses at the meal. It finds out what the API actually does by calling it, in production, with a credential, for money

**Our bet: what agents are missing is not a better description. It is a real call, against real state, with real results, made before anything is spent**

## 01 · WebMCP moved execution into the browser

### The first call is now the real one

How would you know if one of your failed calls came from a confused agent instead of a bug?

Most providers can't answer that yet The traffic looks identical until it doesn't

## 02 · WHAT GECKO DOES

How it checks before it commits

Four behaviors that turn a guess into a verified call

- **Predicts before it commits** Simulated cost matched actual mainnet execution exactly, 7 for 7, across 20 real transactions
- **Works with every agent** Any agent framework, any MCP client, one surface
- **Reads what runs, not what's written** Recovers what a spec omits or gets wrong, straight from deployed code
- **Refuses instead of guessing** When the surface doesn't say something, it says so, not a plausible wrong answer
- **Free before it's real** Provable at $0 offline, then on a mainnet fork, before anything signs

## 03 · CASE STUDIES

- **A real transaction** An agent bought water on mainnet, sixteen times, and the receipt called every one [Learn more](https://solscan.io/tx/5cjBs5VE8WVVctG2EoUkYiRkW92sXkoT4YsNxszWC9CE3sK7triTJ5vnY6TrcQ2BRPYUtWsd3LtTnyieUfn8Hw2Y)
- **Four programs** Four live Solana programs, called blind, then called checked [Learn more](https://github.com/GeckoVision/gecko-surf/blob/main/docs/proofs.md)
- **A production API** A 43-operation API graded A, still missing what no spec can carry [Learn more](https://api.pegana.xyz)

## Get started

Your API already talks to agents. Does it know when they're wrong?

Every prediction we've made, and what it actually cost. Public, linkable

Join the waitlist: https://geckovision.tech/#waitlist

Developers start here: https://geckovision.tech/get-started

## FOR AGENTS

### This page has a twin your agent can read

HTML for humans. Markdown, manifest, and MCP endpoint for agents

- [llms.txt](https://geckovision.tech/llms.txt): Curated index of this site (llmstxt.org shape)
- [llms-full.txt](https://geckovision.tech/llms-full.txt): The whole landing as one Markdown file
- [index.md](https://geckovision.tech/index.md): Markdown twin of this page (text/markdown)
- [gecko.json](https://geckovision.tech/gecko.json): Machine-readable product manifest
- [.well-known/gecko.json](https://geckovision.tech/.well-known/gecko.json): Discovery endpoint, the manifest at a known path
- [agents.md](https://geckovision.tech/agents.md): Task-oriented instructions for an agent, not just an index
- [.well-known/agent-card.json](https://geckovision.tech/.well-known/agent-card.json): A2A-style card describing the hosted MCP endpoint
- [.well-known/ard.json](https://geckovision.tech/.well-known/ard.json): This site's own agent-readiness self-assessment
- [MCP endpoint ↗](https://mcp.geckovision.tech/orquestra/mcp): Streamable-HTTP, one-click add to Claude or Cursor
- [docs · llms.txt ↗](https://docs.geckovision.tech/llms.txt): The docs' own agent index, not the human home page

## Links

- Website: https://geckovision.tech
- Docs: https://docs.geckovision.tech
- GitHub: https://github.com/GeckoVision/gecko-surf
- MCP: https://mcp.geckovision.tech/orquestra/mcp
- PyPI: https://pypi.org/project/gecko-surf/
- Discord: https://discord.gg/3gVF5NNbCa
- Install: /plugin marketplace add GeckoVision/gecko-surf

Open source, built in public. © 2026 Gecko · geckovision.tech