Head to head · Exchange market data · October 2026 research run
Bitstamp API vs Kraken API
Kraken API scores 71 (BB) on agent readiness against Bitstamp API's 50.4 (D), and leads in every scored category. Both do exchange market data.
Best crypto exchange APIs and MCP servers for AI agents · All 210 exchanges comparisons
Which one, for what
Best for An agent that needs a long-running regulated spot venue in the EU, UK and US with a sandbox and per-endpoint key permissions, and can do its own signing.
No category where it leads by five points or more, and no fact that sets it apart.
Watch for
No official MCP server, SDK, llms.txt or OpenAPI file; the registry's Bitstamp servers are third parties proxying public market data
Kraken API BB
Best for An agent that trades spot, xStocks, forex or futures on a person's Kraken account from a local machine, with paper trading to test first and an approval gate on live orders.
Ahead on
- Schema & documentation, 80 against 51
- Agent ergonomics, 79 against 58
- Security & auth, 80 against 60
- Payments & pricing, 40 against 20
- Maintenance & community, 81 against 28
- Transparency & trust, 65 against 53
Also in its favour
- Agent-ready, a grade of BB or better
- Runs on your own machine
- Free to start without a card
Watch for
No self-service spot sandbox; the spot UAT environment is on request through an account manager, and paper trading lives in the CLI
Why the edge
Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.
Maintenance & community Kraken API +53
Bitstamp API 28
Read as a closed service. The last dated API change is 28 August 2026, 67 days before the check (20). Only one dated entry in the last 90 days, after 1 July and 12 June (0). No public repository or issue tracker, support pages did not load and support.bitstamp.net did not resolve; a changelog exists (8 of 25). No official SDKs and no MCP registry presence of Bitstamp's own (0). No package to assess (0). 20 + 0 + 8 + 0 + 0 = 28.
Kraken API 81
Read as a closed service with an open-source client. Changelog entry of 27 October 2026 and kraken-cli v0.5.1 on 29 October (30). Fourteen changelog entries since 19 August 2026 and CLI tags on 6 and 7 August and 28 and 29 October (20). A public changelog, api@kraken.com, a status page and a CLI repository merging pull requests at the end of October; issue replies not read (11 of 15). An official Rust SDK pushed in October 2026 and a Go module from January; the MCP server is not in the official registry (12 of 15). The CLI has release and secure SDLC workflows, deny.toml and a pinned toolchain; the SDK's CI not read (8 of 10). 30 + 20 + 11 + 12 + 8 = 81.
Schema & documentation Kraken API +29
Bitstamp API 51
No OpenAPI or other machine-readable contract was found on the API page or elsewhere (0). No llms.txt or Markdown docs (0). The single documentation page describes each endpoint's purpose and parameters, with notes such as the 10-second cache on open orders and the Travel Rule fields, but not when to use one endpoint over another (14 of 20). Parameters are typed with enumerations (margin mode CROSS or ISOLATED, margin multiplier 1 to 25, order types) and required fields marked (11 of 15). Signing examples in Python, Java and C++, and error families with numbered codes and explanations (13 of 15). Version v2 in the path and header, a dated changelog from 7 April 2023 to 28 August 2026, and a 410.001 code for deprecated endpoints, with no stated notice period (13 of 15). 0 + 0 + 14 + 11 + 13 + 13 = 51.
Kraken API 80
No OpenAPI file was found for the REST API in the docs read; the CLI's agents/tool-catalog.json gives JSON Schema inputs for all 188 commands and the 152 MCP tools (15 of 25). The docs serve Markdown twins such as quickstart.md and the CLI ships llms.txt, AGENTS.md and CONTEXT.md (10). Endpoint pages and guides on order lifecycle, errors and rate limits say what each call does, with less on when not to use one (15 of 20). Enums for order types, time in force and flags, and enums and required fields in the tool catalogue (12 of 15). Python, Node.js and cURL examples, an errors guide and the CLI's error-catalog.json with retry guidance (13 of 15). A changelog of 120 dated entries with deprecations dated (15). 15 + 10 + 15 + 12 + 13 + 15 = 80.
Agent ergonomics Kraken API +21
Bitstamp API 58
Graded on the REST API. Order book grouping and transaction time windows size responses, but there is no field selection and no MCP surface (15 of 25). Offset, limit, since and sort on transaction history, until_id windows on order-data replay (14 of 20). response_code and response_explanation name the failure, such as 400.009 insufficient balance, 403.004 trading blocked and 500.025 insufficient liquidity (16 of 20). No idempotency, since client_order_id duplicates are allowed since November 2023 and the docs say only to check the order id after a timeout; the kill switch limits damage (8 of 20). Few required parameters, but no official SDK in any language (5 of 15). 15 + 14 + 16 + 8 + 5 = 58.
Kraken API 79
The MCP server loads services with -s, defaults to no live trading, and its 152 tool definitions average about 520 characters; the REST API takes count, limit and pair filters but has no field selection (18 of 25). Cursor pagination on ledgers and trades since 30 September and 6 October 2026, with ofs deprecated (17 of 20). Prefixed error strings such as EOrder:Rate limit exceeded and EAPI:Invalid nonce, and the CLI's error catalogue says which to retry (17 of 20). cl_ord_id and validate on orders, destructive_hint and elicitation on dangerous MCP tools, no idempotency key on REST (16 of 20). An official Rust SDK at 5 stars, a Go module and example clients, HMAC-SHA512 signing with a strict nonce (11 of 15). 18 + 17 + 17 + 16 + 11 = 79.
Security & auth Kraken API +20
Bitstamp API 60
Revocable HMAC-SHA256 keys with per-endpoint permissions, an IP allow-list, single-use nonces, a timestamp window, sub-account scoping and a one-call kill switch for every key; no key expiry found (24 of 30). Permissions are chosen per endpoint and withdrawals can need Travel Rule address verification, but whether a withdrawal address allow-list exists sits in the unread account settings and no confirmation step is documented for API withdrawals (14 of 20). The API returns exchange data, not third-party text (10). No per-key audit log found; the account's transaction history is the record (4 of 15). security.txt names HackerOne's Robinhood programme but expired on 12 July 2026; no certification page was readable (8 of 20). 24 + 14 + 10 + 4 + 8 = 60.
Kraken API 80
Keys with nine named permissions, optional expiry, IP restriction and nonce window, plus an OAuth sign-in from the CLI (authorisation code with PKCE, public client) that mints a no-withdrawal key expiring within 90 days or a read-only key (30). Read-only and no-withdrawal keys, position limits and pair allowlists in account settings, and MCP approval prompts for 33 dangerous tools (18 of 20). The API returns no untrusted content; the CLI docs warn that the feedback tool uploads a local file without approval (10). Keys and their permissions are listed in settings and ledgers record activity, but no per-call log for the operator was found (6 of 15). A valid security.txt, a bug bounty policy page, SECURITY.md and a secure SDLC workflow in the CLI; certifications not read (16 of 20). 30 + 18 + 10 + 6 + 16 = 80.
Payments & pricing Kraken API +20
Bitstamp API 20
No machine payment protocol (0). The fee schedule page loaded empty, the API's fee endpoints need a key, and no rate could be read, so fees are scored as not published (0, unchecked). The API is free, public endpoints need no key and the sandbox needs no money (20). A person must sign up in a browser with identity checks and mint the key (0). 0 + 0 + 20 + 0 = 20.
Kraken API 40
No machine payment protocol (0). Maker and taker fees by tier published without login (20). Public market data, paper trading and the futures demo need no account or card (20). A person signs up, verifies and mints a key or approves the OAuth sign-in (0). 0 + 20 + 20 + 0 = 40.
Transparency & trust Kraken API +12
Bitstamp API 53
The editorial half. A closed service whose terms of use loaded empty for our reader, so the licence and clauses are unknown (8 of 30). The privacy policy loaded empty, so retention and data handling are unchecked (0 of 30). A 410.001 code marks deprecated endpoints and the changelog records replacements such as trading-pairs-info by markets, with no notice period stated (8 of 20). Subprocessors and data locations are in the unread privacy policy (0). 8 + 0 + 8 + 0 = 16.
Kraken API 65
The editorial half. A closed service with clear terms naming regional Payward entities under California law; the CLI is MIT (15 of 30). The privacy notice was not read (5 of 30). The changelog dates deprecations and the terms carry a last-updated date (16 of 20). No subprocessor or data-location statement read (0 of 20). 15 + 5 + 16 + 0 = 36.
Score by category
| Category | Weight this run | Bitstamp API | Kraken API | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 63 | 67 | Kraken API +4 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 51 | 80 | Kraken API +29 |
| Agent ergonomics | 13%16.2 | 58 | 79 | Kraken API +21 |
| Security & auth | 14%17.5 | 60 | 80 | Kraken API +20 |
| Payments & pricing | 10%12.5 | 20 | 40 | Kraken API +20 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 28 | 81 | Kraken API +53 |
| Transparency & trust | 7%8.8 | 53 | 65 | Kraken API +12 |
| Negative events | ≤15 | 0 | 0 | |
| Total | D 50.4/100 | BB 71/100 |
Facts side by side
| Fact | Bitstamp API | Kraken API |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | Bitstamp Ltd. | Payward, Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | stdio | |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Proprietary hosted API under Bitstamp's terms of use, which our reader couldn't load | Proprietary hosted service under Kraken's Global Terms of Service (30 October 2026). kraken-cli, which carries the kraken-mcp server, is MIT |
| Tools exposed | none | 152 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-08-28 | 2026-10-29 |
| Terms last updated | couldn't be read | 2026-10-30 |
| Privacy policy last updated | couldn't be read | 2026-10-21 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | none | 795 stars |
Verdicts
Bitstamp API
Bitstamp documents its v2 API on one static page with numeric rate limits, per-endpoint key permissions, an IP allow-list, a kill switch and a sandbox. There is no official MCP server, duplicate client order ids are allowed, and the fee schedule, terms, privacy policy and country list render by script and could not be read.
Kraken API
Kraken pairs a documented REST, WebSocket and FIX API with the open-source kraken-cli, whose kraken-mcp server gates 33 dangerous tools behind approval and signs in by OAuth with a no-withdrawal key. Spot has no self-service sandbox, no OpenAPI file was found, and a 59-minute connectivity outage hit every interface on 30 October 2026.
Before you call either
Bitstamp API
- Mint a key with only the endpoint permissions the task needs and an IP allow-list; keep
revoke_all_api_keysin reach as a kill switch - Treat
client_order_idas a label, not a guard. On a timeout (500.016) fetch the order by client id before resending, because duplicates are accepted - Use a fresh 36-character nonce and a timestamp within 150 seconds of server time on every request, or expect API0004 and API0017
- Stay under 400 requests a second and 10,000 per 10 minutes; 400.002 and 400.067 mean back off, and open-orders answers are cached for 10 seconds
- Start on sandbox.bitstamp.net with the same paths, and read the fee schedule in a browser before quoting costs, since it is unreadable to a plain fetch
Kraken API
- Start kraken-mcp with -s market,paper,feedback or the default services; add trade only with a least-privilege key, and never pass --allow-dangerous on an agent that reads untrusted input
- Ask the person to run kraken auth login in their own terminal; it needs a browser and saves a no-withdrawal key that expires in 90 days at most
- Send a fresh --cl-ord-id on each order and run it with --validate first; after a network error look the order up before sending it again
- Keep the nonce strictly increasing per key and stay under the tier's counter, since EAPI:Rate limit exceeded has no Retry-After header
- Test strategies in a paper workspace, which fills at live prices with no account, before a live workspace
Questions
Which is better for AI agents, Bitstamp API or Kraken API?
Kraken API scores 71 (BB) on agent readiness against Bitstamp API's 50.4 (D), and leads in every scored category.
Do Bitstamp API and Kraken API need an API key?
Bitstamp API needs an API key. Kraken API takes an API key or an OAuth sign-in.
Can an agent call Bitstamp API and Kraken API without installing anything?
No hosted endpoint is listed for Bitstamp API. Kraken API runs on your own machine, with no hosted endpoint listed.
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Machine-readable
- This page as Markdown
/compare/bitstamp-vs-kraken.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/bitstamp.json·/api/v1/tools/kraken.json - From a terminal
anchor compare bitstamp kraken(the CLI) - Over MCP
compare_tools {"a": "bitstamp", "b": "kraken"}at/mcp, no key