# Antseed (slim)

> Antseed is an open-source peer-to-peer network for buying and selling AI inference. A buyer runs a local proxy with OpenAI and Anthropic format endpoints, which routes each request to an independent seller and pays in USDC on Base.

- Full: https://www.anchorterminal.com/tools/antseed.md (~7,000 tokens) · this version ~1,730 tokens · JSON https://www.anchorterminal.com/tools/antseed.json · canonical https://www.anchorterminal.com/tools/antseed
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

**C · 55.1/100 · rank #459 of 629 · #9 in Model APIs & inference · not agent-ready · confidence medium**


Assessment: A buyer needs no account. The CLI creates a wallet key, free models answer at once and paid ones draw on deposited USDC, with seller, tokens and cost returned in response headers. Sellers are unvetted and can read prompts unless TEE-verified, the proxy forwards a client's own credential headers to them, and every package is pre-1.0.

## Facts

- Kind: Model router · vendor: Antseed Foundation · category: Model APIs & inference · legal entity: Antseed Foundation · provenance 52/100
- Local only (HTTP): npm `@antseed/cli`
- Auth: None · pricing: Pay per use · x402: no · licence: GPL-3.0 (LICENSE in the repository). The @antseed/cli manifest on npm carries no licence field
- Probe metrics: not measured yet (probes haven't run)
- Surface graded: The buyer side of the CLI, @antseed/cli 0.1.173, which runs a local proxy at http://localhost:8377. The AI VPN desktop app (release 0.2.51) bundles the same proxy
- Formats: Anthropic Messages, OpenAI Chat Completions, OpenAI Responses, OpenAI Images, Venice and fal video queues, and an OpenAI-style model list. Text formats are translated in any direction, image routes are not, and reasoning traces don't survive translation
- Runtimes: Node.js 20 or later on macOS, Linux and Windows under WSL for the CLI. Desktop installers for macOS (signed and notarised), Windows x64 (unsigned) and Linux
- Routing: Automatic by price and trust with a minimum trust score of 60, soft affinity per conversation, and three pin methods (model prefix `<peerId>@<model>`, header `x-antseed-pin-peer`, session pin)
- Payment: USDC on Base. Deposits sit in the AntseedDeposits contract, each seller session is capped by a signed ReserveAuth with a deadline, and spending is authorised cumulatively off-chain. A 15-minute grace period applies before a buyer can withdraw from a channel a seller abandoned
- Funding: `antseed buyer deposit` prints an address and QR code, and incoming USDC is swept into credits for a fixed $0.05 relay fee. A first deposit must net at least 1 USDC. The desktop app also takes card top-ups
- Errors: 400 `missing_routing_target`, 402 `insufficient_deposits` (with `suggestedAmount`) and `channel_exhausted`, 413 `upload_body_too_large`, 502 `model_not_found`, 499 on client cancel
- Limits: No quota per the FAQ. Request timeout 5 minutes, stream duration 30 minutes, upload cap 32 MiB, videos above $5.00 refused. A seller's 429 is retried up to three times before failover
- Privacy: No central request log. A standard seller can read the prompt, a TEE-verified one cannot per the vendor, and `--require-verifier` refuses unverified sellers
- Keys: Desktop keys are encrypted with the OS keychain. The CLI stores `identity.key` in plain text unless `ANTSEED_IDENTITY_HEX` is set. A separate authorised wallet can hold withdrawal rights
- Gateway: `antseed gateway` issues hashed API keys with daily, monthly and lifetime USD limits, an expiry and a paying wallet per key, shipped in CLI 0.1.171 on 8 October 2026
- Agent setup: llms.txt, a join-buyer skill at https://antseed.com/skill.md, and integration pages for Claude Code, Codex, OpenCode, Hermes, OpenClaw, Pi, LangChain and the Vercel AI SDK
- Prices: Network fee 4% percentage fee; Gasless deposit relay $0.05 per transaction

- Scores: Reliability 62, Performance pending, Schema & documentation 55, Agent ergonomics 56, Security & auth 45, Payments & pricing 70, Task success pending, Maintenance & community 79, Transparency & trust 59 · negative events -4 · total over the 7 assessed categories
- Why: Reliability, Read with the local-software lines, since the buyer runs the proxy. · Schema & documentation, No OpenAPI document found in the repository or docs. · Agent ergonomics, Model reading, as for other routers. · Security & auth, Model reading. · Payments & pricing, x402 v2 exists only on `POST /v1/key/topup` of a gateway the owner runs, and is off until enabled per key. · Maintenance & community, v0.2.51 was released on 8 October 2026 and @antseed/cli 0.1.173 was published the same day (30). · Transparency & trust, GPL-3.0 source for the protocol, CLI, desktop app and contracts (30).
- Sources: 19, open questions: 8, both in the full twin
- Capabilities: inference.router, inference.llm
- JSON: https://www.anchorterminal.com/api/v1/tools/antseed.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/antseed.svg` or a link to https://www.anchorterminal.com/tools/antseed from a page on antseed.com or one of its subdomains, or the README of github.com/Antseed/antseed, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Send a placeholder key such as `antseed-p2p`. The proxy forwards whatever `Authorization` or `x-api-key` header the client sends to the seller
2. Call `GET /v1/models` first and request a concrete id. The `antseed` alias works only when the desktop app has a model selected
3. Handle 402 `insufficient_deposits` by reading `suggestedAmount`, then fund the address from `antseed buyer deposit` with USDC on Base
4. Pass `--verifiers antseed-verifier --require-verifier` to `antseed buyer start` when prompts are private, so only TEE-verified sellers are routed
5. Read `x-antseed-peer-id` and `x-antseed-estimated-cost-usd` on each response, and pin a seller with `<peerId>@<model>` when the same one must answer

## Connect

```bash
npm install -g @antseed/cli && antseed buyer start
```

```bash
curl http://localhost:8377/v1/chat/completions -H 'content-type: application/json' -d '{"model": "deepseek-v4-flash", "messages": [{"role": "user", "content": "Hello"}]}'
```

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| OpenRouter | B | 68.5 | inference.llm, inference.router | https://www.anchorterminal.com/tools/openrouter.min.md |
| OpenAI API | A | 83.3 | inference.llm | https://www.anchorterminal.com/tools/openai-api.min.md |
| Claude API | BB | 77.3 | inference.llm | https://www.anchorterminal.com/tools/anthropic-api.min.md |
| GroqCloud | BB | 75.6 | inference.llm | https://www.anchorterminal.com/tools/groq.min.md |
| BlockRun.AI | BB | 72.4 | inference.llm | https://www.anchorterminal.com/tools/blockrun-ai.min.md |


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