mcp server
Tereno on Base
Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.
Description as published by the maintainer. Source
- version 0.1.3
- active
- document understanding
active — Registry entry last updated 2026-08-05. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.
What this server can do
13 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
chain_snapshot- What is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call — no parameters required. Paid per call with x402 on Base: $0.01 to $0.02 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit.
contract_change(address)- Did this token's contract change under you? Compare a Base contract with its previous Tereno observation to catch a silent proxy upgrade, an admin swap, a bytecode change or a freshly paused contract, each answer stating the block it stops being valid at. Paid per call with x402 on Base: $0.01 to $0.02 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit. Required: address.
contract_guard(address)- Is this Base contract safe to interact with? Check whether an address is executable code, detect common proxy and pause signals, and return a bounded action verdict. Paid per call with x402 on Base: $0.01 to $0.03 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit. Required: address.
contract_interface(address)- What standard does this Base contract implement? Detect ERC-20, ERC-721, ERC-1155 and ERC-165 support plus EIP-1967 proxy control slots in one bounded check. Paid per call with x402 on Base: $0.01 to $0.02 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit. Required: address.
demand_pledge(wallet, capability)- Free market-signal pledge. It earns no credit now; a bounded non-transferable credit is released only if this same wallet later settles the named capability after it exists. Required: wallet, capability.
evidence_artifact(artifactId)- Can this public Tereno artifact be reused? Return machine-readable provenance, field validity and recomputation inputs for a shared Base artifact. Paid per call with x402 on Base: $0.01 to $0.03 USDC depending on how much of the answer the network already has. Private: the response is never cached, shared or resold, and it can only describe work that was already public. Required: artifactId.
tereno_catalog- Free. The full capability catalog: what each one answers, its price tiers in USDC on Base, how long an answer stays valid, and whether it is shared or private. Read this before paying for anything.
tereno_evidence_reference(channel, artifactId, installationId)- Free. Resolve an artifactId another agent handed you: producer, validity window and the exact normalized input needed to reproduce it. Supply a stable opaque installationId to participate in the cross-agent reference experiment; it is hashed, deduplicated daily and never creates payment or credit. Required: artifactId.
tereno_price(url, address, artifactId, capability)- Free. Indicative price and reuse tier for one specific input, without binding a quote or revealing a wallet. Returns hit when another agent already paid to compute this and it is still fresh, partial when only the durable half survives, miss when nothing is there to reuse. The gap between those tiers is what reuse is worth. Required: capability.
tereno_receipt(invocationId)- Free. Look up what a settled invocation actually charged: capability, version, cache tier, list price, credit applied, price paid and whether it settled on chain. Use it to check that a call you or another agent paid for was billed the way it was quoted. Required: invocationId.
token_metadata(address)- What token is this? Read a Base token's name, symbol, decimals and total supply as one typed, cache-shared answer with block-level freshness. Paid per call with x402 on Base: $0.01 to $0.03 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit. Required: address.
transaction_intent_guard(to, data, from, value)- Is this transaction safe to sign? Before signing on Base, classify transaction intent, simulate execution, estimate gas, infer standard balance and allowance deltas, flag a scam or unlimited approval that could drain your wallet, and inspect target changes and pause state. Paid per call with x402 on Base: $0.05 USDC. Private: never cached, shared or resold. Your unsigned transaction stays with the wallet that paid for it. Required: from, to.
web_compile(url, wallet)- Turn a public web page into bounded, LLM-ready Markdown with resolved links, citations and a content-addressed artifact. Reuse the same fresh page instead of paying to fetch it again. Paid per call with x402 on Base: $0.02 to $0.1 USDC depending on how much of the answer the network already has. Shared: reusing an answer another agent already paid for costs less, and the wallet that produced it earns a bounded credit. Required: url, wallet.
Last successful function declaration observed on . Source: https://www.tereno.xyz/api/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://www.tereno.xyz/api/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 0.1.3 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-08-05 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-08-05 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 13 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | www.tereno.xyz | |
| mcp endpoint status | ok | The server listed 13 functions when asked. | as of probe | www.tereno.xyz |
Where to get it
This record as data
Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.
GET /api/v1/entries/mcp_server.json