# Gemini Exchange API vs OKX API

> Gemini Exchange scores 74.6 (BB) to OKX's 64.3 (B) for exchange market data. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gemini-exchange-vs-okx
- Markdown: https://www.anchorterminal.com/compare/gemini-exchange-vs-okx.md (~5,200 tokens)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-03

Gemini Exchange API scores 74.6 (BB) on agent readiness against OKX API's 64.3 (B), and leads in every scored category. Both do exchange market data.

- Gemini Exchange API: grade BB, 74.6/100, rank #70 of 1349. Markdown https://www.anchorterminal.com/tools/gemini-exchange.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-exchange.json
- OKX API: grade B, 64.3/100, rank #413 of 1349. Markdown https://www.anchorterminal.com/tools/okx.md · JSON https://www.anchorterminal.com/api/v1/tools/okx.json
- Best crypto exchange APIs and MCP servers for AI agents: https://www.anchorterminal.com/best/crypto-exchanges/index.md
- All 210 exchanges comparisons: https://www.anchorterminal.com/compare/crypto-exchanges/index.md

## Which one, for what

### Gemini Exchange API (BB)

Good for: An agent trading spot, perpetuals or prediction markets for a US customer with a role-limited key and a sandbox to rehearse on.

Ahead on:
- Reliability, 73 against 65
- Schema & documentation, 88 against 73
- Security & auth, 78 against 68
- Payments & pricing, 40 against 20
- Maintenance & community, 88 against 81
- Transparency & trust, 75 against 62

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Client order ids are only recommended to be unique and no duplicate rejection is documented, so a retried order can execute twice

### OKX API (B)

Good for: An agent trading spot, perpetuals, futures or options on a person's OKX account from a local machine, with demo trading to test first and grid or DCA bots through the kit.

Also in its favour:
- Free to start without a card

Watch for: The fee table loads by script and the fee FAQ defers to the logged-in view, so maker and taker rates were not read


## Why the edge

### Payments & pricing: Gemini Exchange API +20

- Gemini Exchange API (40): No machine payment protocol (0). The API fee schedule is public per tier without login, 0.6% maker and 1.2% taker at the base tier (20). The API is free to call, public market data needs no key, and the sandbox credits test funds with no card (20). A person must sign up in a browser with identity checks, mint a key or approve an OAuth grant, and production OAuth apps wait for Gemini's review (0). 0 + 20 + 20 + 0 = 40.
- OKX API (20): No machine payment protocol (0). The fee table loads by script and the fee FAQ defers to the logged-in view, so no rate was read (0 of 20, unchecked). Public market data and demo trading need no funded account or card (20). A person signs up, verifies and mints a key (0). 0 + 0 + 20 + 0 = 20.

### Schema & documentation: Gemini Exchange API +15

- Gemini Exchange API (88): OpenAPI 3 for REST (specs/openapi/rest.yaml), AsyncAPI for WebSocket, a prediction-markets OpenAPI file and a specs/index.json catalogue; the MCP server's tools take zod schemas published as JSON Schema (25). llms.txt, llms-full.txt, agents.md, an agent card and an agent skills index (10). Endpoint pages state purpose, the Build an agent guide says what to establish before acting and when to stop, and MCP tool descriptions tell the model when to confirm; the docs don't say when not to use an endpoint (15 of 20). Typed inputs with enums for order types, options and sessions, required fields marked, decimals as strings since 7 July 2026 (12 of 15). Examples throughout, samples in three languages, and an error-codes page with 53 named reasons and their HTTP statuses (14 of 15). A revision history dated from 2015 to 28 October 2026 and versioned paths (v1, v2), but the upcoming-changes page reads "TBD" (12 of 15). 25 + 10 + 15 + 12 + 14 + 12 = 88.
- OKX API (73): No OpenAPI file was found in the V5 docs; the kit's tool definitions are typed TypeScript with annotations, and the organisation has an undescribed ai-builder-openapi-md repository we did not read (12 of 25). okx.com/llms.txt exists and links the API and Agent Trade Kit pages, though the V5 docs have no Markdown twins (5 of 10). Each endpoint states its rate limit, rule, parameters and notes (15 of 20). Enums for ordType, tdMode and instType with required flags (12 of 15). Request and response examples per endpoint and an error code list with messages (14 of 15). A dated changelog with an upcoming-changes section that labels breaking changes and dates sunsets (15). 12 + 5 + 15 + 12 + 14 + 15 = 73.

### Transparency & trust: Gemini Exchange API +13

- Gemini Exchange API (75): The editorial half. A closed service under a user agreement that names its entities by state, with the MCP server and SDKs open under Apache-2.0 (18 of 30). The privacy policy of 11 May 2026 names entities and processing countries, ties retention to need without numbers and names provider categories only, with no DPA or subprocessor list found (16 of 30). The revision history records removals and type changes with dates, but the upcoming-changes page is "TBD" and no notice period is stated (8 of 20). Processing countries are named (US, Ireland, UK, Malta, Singapore, Australia) and providers by category, with no named subprocessors (12 of 20). 18 + 16 + 8 + 12 = 54.
- OKX API (62): The editorial half. A closed service with terms that name the contracting entities by region and an API Agreement for agents; the kit is MIT (17 of 30). The privacy policy was not read (5 of 30). The changelog dates sunsets and labels breaking changes, such as port 8443 on 31 October and 16 November 2026 (16 of 20). No subprocessor or data-location statement read; the MCP server is local and its npm package runs a postinstall script whose purpose we did not trace (0 of 20). 17 + 5 + 16 + 0 = 38.

### Security & auth: Gemini Exchange API +10

- Gemini Exchange API (78): Revocable API keys with one role each (Trader, Fund Manager, Auditor, Administrator), HMAC-SHA384 signing with a nonce, and OAuth 2.0 with scopes, PKCE S256, single-use refresh tokens and RFC 7009 revocation; no IP allow-list documented and no key expiry (28 of 30). Auditor is read-only, a Trader key cannot withdraw, approved withdrawal addresses are a Fund Manager action, and the MCP server refuses funds-moving tools without `confirm: true` (18 of 20). The MCP server wraps every response in untrusted-output markers, strips control and bidi characters and redacts memos, labels and agreement text; the REST docs say nothing on the subject (13 of 15). Order and transfer history are readable, but no per-key audit log or API access log was found (5 of 15). security.txt with a PGP contact and a bug bounty paying $150 to $20,000, scoped to the sandbox hosts; no certification was read and no public advisory process was found (14 of 20). 28 + 18 + 13 + 5 + 14 = 78.
- OKX API (68): Key, secret and passphrase with Read, Trade and Withdraw permissions, up to 20 bound IPs, revocation in the account, and unbound Trade or Withdraw keys that expire after 14 idle days; no OAuth (28 of 30). Read-only keys, sub-account keys, demo trading, the kit's --read-only flag and its startup check that hides order tools when the key cannot trade, and an API Agreement requiring minimum scope; no confirmation step in the kit (18 of 20). The news and smartmoney modules return third-party text and the docs read give no guidance on treating it as untrusted (5 of 15). An account audit log tool in the kit and usage records for unbound keys in the Security Center, no per-call log (9 of 15). No security.txt; SECURITY.md with security@okx.com and GitHub private advisories; certifications and a bounty not read (8 of 20). 28 + 18 + 5 + 9 + 8 = 68.

### Reliability: Gemini Exchange API +8

- Gemini Exchange API (73): Read with the hosted lines on the REST API at api.gemini.com. status.gemini.com is a Statuspage site with component history (20). Its Atom feed for 10 September to 3 November 2026 holds 25 entries, mostly scheduled trading and FIX upgrades of 15 to 60 minutes with possible order timeouts, single-network deposit delays, and incorrect perpetual index prices for about 3.5 hours on 15 and 16 October; a 3-hour scheduled eOTC window was planned and outside the core API. Minor only (20). Rate limits with numbers, 120 a minute public and 600 private plus per-endpoint limits (15). 429 is documented but with no Retry-After or backoff guidance, and client order ids are recommended without duplicate rejection, so retries are not safe by contract; the heartbeat cancel is a safety net rather than idempotency (8 of 15). No SLA found (0). Generally available (10). 20 + 20 + 15 + 8 + 0 + 10 = 73.
- OKX API (65): Read with the hosted lines on the V5 REST API. okx.com/status is OKX's own page with issue descriptions, maintenance notices and deposit and withdrawal status, but no component history or feed (10 of 20). It lists no incident between 5 August and 3 November 2026; its newest entry is from March 2024, and whether every incident reaches the page cannot be told, so read as clean with a doubt (20 of 30). Rate limits per endpoint, per User ID and per sub-account with numbers, and WebSocket limits (15). Error 50011 on a limit, a clOrdId on orders and a cap of 3 amendments in flight, but no Retry-After or backoff guidance found (10 of 15). No SLA (0). Generally available (10). 10 + 20 + 15 + 10 + 0 + 10 = 65.

### Maintenance & community: Gemini Exchange API +7

- Gemini Exchange API (88): Read as a closed hosted service with an open repository. The revision history's latest entry is 28 October 2026 and the repository was pushed on 5 October (30). Thirteen dated entries between 2 September and 28 October 2026 (20). The nine open items on the repository are all pull requests with replies, Dependabot included, and the docs name trading@gemini.com for developer support; no public issue tracker was tested (15 of 25). Not in the official MCP registry, but current official SDKs, TypeScript 0.1.1 of 23 September and Go 0.1.0 of 29 August 2026 (15). CI workflows validate and publish both SDKs and the MCP server has tests; dependencies are current (8 of 10). 30 + 20 + 15 + 15 + 8 = 88.
- OKX API (81): Read as a closed service with an open-source kit. Changelog entry of 27 October 2026 and kit v1.5.0 on 28 October (30). Changelog entries on 3, 6, 11, 18, 20 and 26 August, 15, 29 and 30 September and 27 October, and kit releases on 20 and 21 August, 1, 7, 14 and 23 September, 19 and 28 October (20). A public changelog, a Telegram community for the kit and GitHub issues whose replies were not read (10 of 15). python-okx is named as the official SDK and the kit is current; the MCP server is not in the official registry (12 of 15). The kit runs CI on push and pull request across Node 18, 20 and 26 with unit tests and coverage (9 of 10). 30 + 20 + 10 + 12 + 9 = 81.

## Score by category

| Category | Weight | Gemini Exchange API | OKX API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 73 | 65 | Gemini Exchange API +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 88 | 73 | Gemini Exchange API +15 |
| Agent ergonomics | 13% (16.2 this run) | 79 | 77 | Gemini Exchange API +2 |
| Security & auth | 14% (17.5 this run) | 78 | 68 | Gemini Exchange API +10 |
| Payments & pricing | 10% (12.5 this run) | 40 | 20 | Gemini Exchange API +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 88 | 81 | Gemini Exchange API +7 |
| Transparency & trust | 7% (8.8 this run) | 75 | 62 | Gemini Exchange API +13 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **74.6 · BB** | **64.3 · B** | |

## Facts side by side

| Fact | Gemini Exchange API | OKX API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Gemini Trust Company, LLC | OKX |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | stdio | stdio |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Proprietary hosted API under Gemini's user agreement. The developer-platform repository (MCP server, TypeScript and Go SDKs, samples and skills) is Apache-2.0 | Proprietary hosted service under OKX's Terms of Service (29 October 2026) and API Agreement (28 July 2026). The Agent Trade Kit (MCP server, CLI and skills) is MIT |
| Tools exposed | 87 | 170 |
| Read-only variant documented | yes | yes |
| llms.txt | yes | yes |
| Last release | 2026-10-28 | 2026-10-28 |
| Terms last updated | couldn't be read | 2026-10-29 |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | not found in the text |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | 8 stars, 99 npm/wk | 499 stars, 1.8k npm/wk |

## Verdicts

**Gemini Exchange API.** Gemini publishes an OpenAPI and AsyncAPI contract, API key roles that keep withdrawals off a trading key, a funded sandbox, and an official MCP server whose tools carry read-only and destructive annotations and a confirm gate. Client order ids are not checked for duplicates, there is no SLA, and UK, EEA and Australian accounts closed in April 2026.

**OKX API.** OKX publishes per-endpoint rate limits, Read, Trade and Withdraw key permissions with IP binding, demo trading on the production host, and an MIT MCP server with 170 tools, a read-only flag and a permission check at startup. The fee table and privacy policy were not read, no OpenAPI file was found, and the news tools return third-party text.

## Before you call either

### Gemini Exchange API

1. Create a Trader key for order flow and a separate Fund Manager key only if withdrawals are in scope; never combine them, and keep the secret out of prompts and logs
2. Set a `client_order_id` per order and look it up with `get_order_status` before resending after a timeout, because Gemini does not reject duplicates
3. Start on api.sandbox.gemini.com with the same code; sandbox apps register at once, production OAuth apps wait for Gemini's review
4. Stay under 1 public and 5 private requests a second; a 429 keeps answering 429 until the rate falls, with no Retry-After to read
5. Check the person's country against the availability page first; UK, EEA and Australian accounts were closed on 6 April 2026

### OKX API

1. Start okx-trade-mcp with --profile demo first, then --read-only on a live key; load only the modules the task needs
2. Use a sub-account key with Read and Trade only, bound to the agent's IP; an unbound Trade key expires after 14 idle days
3. Stay under 60 place-order requests per 2 seconds per instrument and at most 3 amendments in flight per order; 50011 means the limit was hit
4. Send a clOrdId on every order and use the structured error block (code, message, endpoint) to diagnose with read-only tools before retrying
5. Call us.okx.com or eea.okx.com for US, Australian and EEA accounts; openapi.okx.com does not serve those regions

## Questions

### Which is better for AI agents, Gemini Exchange API or OKX API?

Gemini Exchange API scores 74.6 (BB) on agent readiness against OKX API's 64.3 (B), and leads in every scored category.

### Do Gemini Exchange API and OKX API need an API key?

Gemini Exchange API takes an API key or an OAuth sign-in. OKX API needs an API key.

### Can an agent call Gemini Exchange API and OKX API without installing anything?

Gemini Exchange API runs on your own machine, with no hosted endpoint listed. OKX API runs on your own machine, with no hosted endpoint listed.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/gemini-exchange-vs-okx.json, and with the fewest tokens: https://www.anchorterminal.com/compare/gemini-exchange-vs-okx.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "gemini-exchange", "b": "okx"}`. From a terminal: `anchor compare gemini-exchange okx`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/gemini-exchange.json and https://www.anchorterminal.com/api/v1/tools/okx.json

## Other comparisons with Gemini Exchange API or OKX API

- [Bitfinex API vs Gemini Exchange API](https://www.anchorterminal.com/compare/bitfinex-vs-gemini-exchange.md)
- [Bitfinex API vs OKX API](https://www.anchorterminal.com/compare/bitfinex-vs-okx.md)
- [Bitget vs Gemini Exchange API](https://www.anchorterminal.com/compare/bitget-vs-gemini-exchange.md)
- [Bitget vs OKX API](https://www.anchorterminal.com/compare/bitget-vs-okx.md)
- [Bithumb Open API vs Gemini Exchange API](https://www.anchorterminal.com/compare/bithumb-vs-gemini-exchange.md)
- [Bithumb Open API vs OKX API](https://www.anchorterminal.com/compare/bithumb-vs-okx.md)
- [Bitstamp API vs Gemini Exchange API](https://www.anchorterminal.com/compare/bitstamp-vs-gemini-exchange.md)
- [Bitstamp API vs OKX API](https://www.anchorterminal.com/compare/bitstamp-vs-okx.md)
- [Bybit vs Gemini Exchange API](https://www.anchorterminal.com/compare/bybit-vs-gemini-exchange.md)
- [Bybit vs OKX API](https://www.anchorterminal.com/compare/bybit-vs-okx.md)
- [Crypto.com Exchange API vs Gemini Exchange API](https://www.anchorterminal.com/compare/crypto-com-exchange-vs-gemini-exchange.md)
- [Crypto.com Exchange API vs OKX API](https://www.anchorterminal.com/compare/crypto-com-exchange-vs-okx.md)
- [Gate vs Gemini Exchange API](https://www.anchorterminal.com/compare/gate-io-vs-gemini-exchange.md)
- [Gate vs OKX API](https://www.anchorterminal.com/compare/gate-io-vs-okx.md)
- [Gemini Exchange API vs HTX trading API](https://www.anchorterminal.com/compare/gemini-exchange-vs-htx.md)
- [Gemini Exchange API vs Hyperliquid](https://www.anchorterminal.com/compare/gemini-exchange-vs-hyperliquid.md)
- [Gemini Exchange API vs Kraken API](https://www.anchorterminal.com/compare/gemini-exchange-vs-kraken.md)
- [Gemini Exchange API vs KuCoin](https://www.anchorterminal.com/compare/gemini-exchange-vs-kucoin.md)
- [Gemini Exchange API vs MEXC API](https://www.anchorterminal.com/compare/gemini-exchange-vs-mexc.md)
- [Gemini Exchange API vs Uniswap Trading API](https://www.anchorterminal.com/compare/gemini-exchange-vs-uniswap.md)
- [Gemini Exchange API vs Upbit Open API](https://www.anchorterminal.com/compare/gemini-exchange-vs-upbit.md)
- [HTX trading API vs OKX API](https://www.anchorterminal.com/compare/htx-vs-okx.md)
- [KuCoin vs OKX API](https://www.anchorterminal.com/compare/kucoin-vs-okx.md)
- [MEXC API vs OKX API](https://www.anchorterminal.com/compare/mexc-vs-okx.md)
- [Binance API vs Gemini Exchange API](https://www.anchorterminal.com/compare/binance-vs-gemini-exchange.md)
- [Binance API vs OKX API](https://www.anchorterminal.com/compare/binance-vs-okx.md)
- [Coinbase Advanced Trade API vs Gemini Exchange API](https://www.anchorterminal.com/compare/coinbase-advanced-trade-vs-gemini-exchange.md)
- [Coinbase Advanced Trade API vs OKX API](https://www.anchorterminal.com/compare/coinbase-advanced-trade-vs-okx.md)
- [Coinbase MCP server (Coinbase for Agents) vs Gemini Exchange API](https://www.anchorterminal.com/compare/coinbase-mcp-vs-gemini-exchange.md)
- [Coinbase MCP server (Coinbase for Agents) vs OKX API](https://www.anchorterminal.com/compare/coinbase-mcp-vs-okx.md)
- [Kraken API vs OKX API](https://www.anchorterminal.com/compare/kraken-vs-okx.md)
- [OKX API vs Uniswap Trading API](https://www.anchorterminal.com/compare/okx-vs-uniswap.md)
- [OKX API vs Upbit Open API](https://www.anchorterminal.com/compare/okx-vs-upbit.md)
- [Deribit vs Gemini Exchange API](https://www.anchorterminal.com/compare/deribit-vs-gemini-exchange.md)
- [Deribit vs OKX API](https://www.anchorterminal.com/compare/deribit-vs-okx.md)
- [dYdX vs Gemini Exchange API](https://www.anchorterminal.com/compare/dydx-vs-gemini-exchange.md)
- [dYdX vs OKX API](https://www.anchorterminal.com/compare/dydx-vs-okx.md)
- [Hyperliquid vs OKX API](https://www.anchorterminal.com/compare/hyperliquid-vs-okx.md)

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Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp