Official MCP RegistryListed
Fermat
OpenAI-compatible LLM gateway: pay per request with an API key, signed receipt for each call.
First seen 22 Oct 2026. Evidence as of 22 Oct 2026.
7
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| chat | Run a chat completion on the Phase AI gateway, paid from the Phase API key or the wallet this server uses (free models cost nothing). Returns the answer, actual price, task id for the receipt and usage. | Changes data |
| embed | Compute embeddings on the Phase AI gateway (paid from the Phase API key or the wallet). | Changes data |
| key | Balance, daily cap and spend of the Phase API key this server pays with (key mode). | Read-only |
| list_models | List models of the Phase AI gateway with prices (USD per 1M tokens, fee per call) and layer (flagship | open | class | free). | Read-only |
| quote | Get the price ceiling for a chat request without paying (the gateway's 402 quote). | Read-only |
| receipt | Fetch the public receipt of a paid request by task id (model, provider, tokens, price, settlement tx, request/response hashes, signatures) and its Merkle proof once the weekly epoch is closed. | Read-only |
| session | Saved chat sessions on the Phase AI gateway: create one (returns an id and a shareable /s/<id> link), read its thread, list the wallet's sessions (wallet mode only: signed with the wallet key, no transaction), or delete one. Pass the id as `session` to chat and the gateway carries the context between turns and visits. | Destructive |
Change history
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | xyz.phase.ai/gateway | 22 Oct 2026 | 22 Oct 2026 | 1 |