# Sella

> Sella is the agentic commerce marketplace. Documentation for consumers (AI agents and the humans who run them) and publishers (dataset, API, and pipeline providers).

## Docs

- [Call 1,400+ APIs through the Sella API Data Market](https://sella.mintlify.app/consumers/api-market.md): Discover and call 1,400+ third-party APIs through a single Sella wallet using list_market_apis. No signups, no upstream keys — pay per request.
- [Sella authentication: OTP, API keys, and multi-chain wallets](https://sella.mintlify.app/consumers/authentication.md): Authenticate your agent once with an email OTP, get an API key and non-custodial multi-chain wallets. Keys stay local — Sella never holds private keys.
- [Fine-tune and fuse models with Cradle and Mergekit](https://sella.mintlify.app/consumers/compute.md): Enqueue GPU fine-tuning jobs with cradle_breed_agent ($10 USDC) or fuse models with merge_models ($15 USDC) — both gated by x402 payment.
- [Configure your MCP client to connect to the Sella server](https://sella.mintlify.app/consumers/connect.md): Wire the Sella MCP server into Claude Desktop, Cursor, or any HTTP client. Both API key bearer tokens and OAuth 2.0 tokens are accepted.
- [Search Sella's Dataset Catalogue and API Data Market](https://sella.mintlify.app/consumers/discover.md): Search 1,400+ providers and a growing dataset catalogue using keyword filters, price caps, and schema requirements — all for free before you spend.
- [Evaluate Any Dataset Before Buying with try_dataset](https://sella.mintlify.app/consumers/evaluate.md): Use try_dataset to inspect any dataset's schema, sample rows, and quality datacard in a closed trial — no payment required, no full content leaked.
- [Sella agent operations: wallets, budgets, and policies](https://sella.mintlify.app/consumers/operators.md): Fund your agent's wallet, configure SKILLS.md policies, and govern purchase behavior with commerce_mode, buytemp, and budget limits.
- [Purchase a Dataset and Settle x402 Payment on Sella](https://sella.mintlify.app/consumers/purchase.md): Call get_dataset to retrieve full dataset content. Free tiers deliver immediately; paid tiers run an x402 challenge-sign-settle handshake automatically.
- [Sella quickstart: connect your agent and make a paid call](https://sella.mintlify.app/consumers/quickstart.md): Connect your agent to Sella over MCP, authenticate with an email OTP, get a non-custodial wallet, and make your first paid MCP call in five minutes.
- [Sella — AI agent marketplace for data, compute, and APIs](https://sella.mintlify.app/index.md): Sella lets AI agents discover, evaluate, and buy datasets, APIs, and compute autonomously — paying per use over x402 with no API keys to juggle.
- [Register a pay-per-call API in the Sella Data Market](https://sella.mintlify.app/publishers/apis.md): Register your API in the Sella Data Market. Agents discover, dry-run, and pay per call through a Sella wallet — your upstream keys stay yours.
- [Publishing datasets: storage, pipeline, and listing](https://sella.mintlify.app/publishers/datasets.md): Upload a dataset, run the ADC processing pipeline to build a quality datacard, and publish it as a live listing agents can discover, trial, and buy.
- [Publishing on Sella: datasets, APIs, and pipelines](https://sella.mintlify.app/publishers/overview.md): List your products once, get auto-graded into a quality datacard, go live, and earn USDC automatically on every access — no invoicing.
- [Publish AI pipelines and models as sellable products](https://sella.mintlify.app/publishers/pipelines.md): List Cradle fine-tuning jobs, Mergekit fusions, bred models, or custom pipelines as paid products. Agents buy your work; you earn USDC per run.
- [Pricing your Sella listings and collecting USDC earnings](https://sella.mintlify.app/publishers/pricing.md): Choose a pricing tier, set a USDC price per access, and collect 97% of every settlement. The 3% platform fee is split automatically at settlement.
- [Quality datacards: how agents evaluate your listing](https://sella.mintlify.app/publishers/quality.md): Sella builds a quality datacard for every listing during processing. Agents read it before buying — a passed qualityStatus is your top conversion lever.
- [Publish your first dataset on Sella: upload to live](https://sella.mintlify.app/publishers/quickstart.md): Create a listing, upload your data, run analysis to build a quality datacard, and go live so agents can discover and buy your dataset.
- [Sella architecture: MCP, payments, and the marketplace](https://sella.mintlify.app/reference/architecture.md): Sella runs as two cooperating services behind one MCP interface. Agents never call them directly — the nine MCP tools handle everything.
- [Sella FAQ: questions from consumers and publishers](https://sella.mintlify.app/reference/faq.md): Answers to common questions about Sella — for consumers (wallets, chains, payments, errors) and publishers (grading, listings, payouts).
- [Sella glossary: definitions for every platform term](https://sella.mintlify.app/reference/glossary.md): Definitions for every Sella term: x402, MCP, datacards, ADC, SKILLS.md, buytemp, Cradle, Mergekit, and more — one authoritative reference page.
- [Sella MCP tools: all parameters and JSON-RPC examples](https://sella.mintlify.app/reference/mcp-tools.md): Complete reference for all nine Sella MCP tools — parameters, authentication requirements, cost, and copy-paste JSON-RPC 2.0 examples.
- [Sella REST API: all endpoints for direct HTTP access](https://sella.mintlify.app/reference/rest-api.md): HTTP endpoints for catalogue browsing, dataset access, agent auth, wallet management, and wallet funding. Base URL: https://sellag.vercel.app.
- [x402 payments: Sella's USDC micropayment handshake](https://sella.mintlify.app/reference/x402.md): x402 extends HTTP 402 into a full micropayment handshake: challenge, sign, settle in USDC on-chain. Every paid Sella call uses this protocol.
- [Sella gallery: twelve ready-to-run agent use cases](https://sella.mintlify.app/use-cases/gallery.md): Copy a prompt and run it in your Sella-connected agent. Covers travel, health, education, e-commerce, finance, media, sales, recruiting, and R&D.
- [Sella use cases: real agent tasks with cost estimates](https://sella.mintlify.app/use-cases/overview.md): A library of ready-to-run agent tasks — each with a copy-paste prompt, step-by-step execution flow, provider types, and an estimated cost range.
- [Spawn a fine-tuned model with Cradle, start to finish](https://sella.mintlify.app/use-cases/spawn-a-model.md): Go from a pile of examples to a model fine-tuned for your exact task — buy training data, breed with Cradle, optionally merge, and resell the result.