Exa
Web search and content-retrieval API built for AI; /search and /contents can be paid per request over x402.
- Sato Score83
- ChainsBase, Solana
Exa is a partly open-source API or SDK by Exa Labs on Base and Solana, with last code activity on 2026-11-05 (Active). Sato Score 83/100 (how open, active and verifiable it is, not a safety grade), as of 2026-11-07. How the score works →
Check what an install would ask of your keys, before you run it →Last commit Nov 5, 2026 · ★ 5,204
Listed from exa.ai on 2026-09-23. Install: not attempted — no install path on record. Evidence →
Next step
Watch Exa
One email if what we observe changes — its repo goes quiet or disappears, or the listing is retired. Nothing else.
Check it from your agent
Add Sato Hub’s MCP server (no key), then ask:
https://satohub.ai/api/mcpRun Sato Hub Preflight on exa-labs/exa-mcp-server before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
Exa is a web search engine and API designed for AI agents, with search modes that trade cost and latency for depth, and a contents endpoint that returns page text. Its /search and /contents endpoints accept x402: the agent signs a USDC payment, retries with a PAYMENT-SIGNATURE header and gets results plus a settlement receipt, with a 10-result cap per x402 search (https://exa.ai/docs/reference/x402-guide). Exa also runs an open-source MCP server (https://github.com/exa-labs/exa-mcp-server), hosted at https://mcp.exa.ai/mcp. Listed in the curated x402 catalog of Coinbase for Agents (https://docs.cdp.coinbase.com/coinbase-for-agents/overview), so an agent connected to a Coinbase account can pay for it from its USDC balance.
Sato Score
83/100· HighHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 35/35
- Code transparency
- 16/20
- Interface verifiability
- 10/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 9/15
- Independent verification
- 7/10
Live endpoint probed — we called the hosted MCP endpoint and it answered with its real tool inventory (proves the interface works, not runtime safety).
Evidence — listed vs checked · what the words mean
Listed from exa.ai on 2026-09-23. Install: not attempted — no install path on record.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Base, Solana | self-reported | exa.ai | as of 2026-11-07 |
| Verification status | Self-Reported — not independently reviewed | self-reported | exa.ai | as of 2026-11-07 |
| Recent activity | last commit 2026-11-05 | observed | github.com/exa-labs/exa-mcp-server | 2026-11-07 |
| MCP endpoint answers | answered — 2 tools listed | observed | mcp.exa.ai | 2026-11-07 |
| Daily check record | 45 of 45 daily checks since 2026-09-23 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-11-06 |
| ERC-8004 registration | declared address not found in the registry | observed | — | 2026-11-07 |
| Sato Score | 83/100 (High)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-11-07 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Tool inventory — 2 tools, probed live 2026-11-07
web_search_exa— Search the web for any topic and get clean, ready-to-use content. Best for: Finding current information, news, facts, people, companies, or answering questions about any topic. Returns: Cweb_fetch_exa— Read a webpage's full content as clean markdown. Use after web_search_exa when highlights are insufficient or to read any URL. Best for: Extracting full content from known URLs. Batch multiple URLs i
- Answers a handshake
- yes · 2026-11-07
- Answers a call
- not asked — no tool is named as a read (list_/get_/search_)
Live probe verifies the interface responds — not what the tools do, their safety, or their output quality. The call is one read-only tool named by this server's own list (list_/get_/search_, no mutating verb anywhere in the name, no required arguments and none that look like a key, an address or an amount), asked once a day with no arguments. Not asked is not a failure.
Observed record — 46 daily checks since 2026-09-23
- Succeeded
- 46
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden.
Last 30 days — to 2026-11-07, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Details
- Chains
- Base, Solana
- Agent types
- Data Provider
- Open source
- Partial
- Pricing
- API key plans, or pay per request in USDC over x402
- Deploys as
- Hosted/Remote
- Last checked
- 2026-11-07
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where Exa fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?, What Are MCPs? The Standard Way to Give Agents Tools
Listing History
Recorded changes to Exa's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 23, 2026Listed on Sato Hub
- Sep 23, 2026Sato Hub began tracking this listing
Compared with
Appears in
- x402 payment tools on Base, scored →
- Solana MCP servers, scored →
- Base MCP servers, scored →
- x402-ready tools, scored →
- x402 payment tools on Solana, scored →
- Payment tools for agents, scored →
- Hosted MCP endpoints answering today, scored →
- Solana MCP servers you can use without a local server →
- x402 endpoints checked for a payment-required answer →
- x402 facilitators on Base →
- x402: agent payments over HTTP →
- MCP: the tool interface for agents →
Related Resources
Coinbase AgentKit
ActiveCoinbase's toolkit for giving AI agents wallets and the ability to take onchain actions.
Hyperliquid
ActiveOnchain perpetual futures and spot DEX running on its own L1 with an HyperEVM smart-contract layer.
Model Context Protocol (MCP)
ActiveAnthropic's open standard for connecting AI systems to external tools and data sources.
Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Exa
- Is Exa open source?
- Partly. Some of Exa is published as source (https://github.com/exa-labs/exa-mcp-server) and some is not. Checked as of 2026-11-07.
- Which chains does Exa support?
- Exa lists support for Base, Solana as of 2026-11-07.
- Is Exa still maintained?
- The most recent code activity Sato Hub observed was on 2026-11-05 (last commit 2026-11-05), which Sato Hub labels "Active". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run Exa?
- Sato Hub has no deploy spec for Exa; follow the project's own documentation at https://exa.ai/docs/reference/x402-guide.
- Is Exa verified on Sato Hub?
- Sato Hub holds one earned check for Exa: Live endpoint probed — we called the hosted MCP endpoint and it answered with its real tool inventory (proves the interface works, not runtime safety). Its Sato Score is 83 of 100, a measure of how open, active and verifiable the project is, not a safety, quality or returns grade.
Cite this pagePlain text, APA or BibTeXShowHide
Cite this page
Sato Hub. "Exa — Sato Hub." Sato Hub, updated 2026-11-07, accessed 2026-11-07. https://satohub.ai/resources/exaData last refreshed 2026-11-07; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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