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ExchangeRebel — pay-per-call APIs for AI agents (x402 on Solana)
com.exchangerebel/exchangerebel in the official MCP registry.
Endpoint https://exchangerebel.com/mcp.
The registry describes it as: 166 pay-per-call APIs for AI agents: market, company, dev + verification tools — x402 on Solana.
We read its 184 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
a2a_send access_crawl access_crawl_preflight access_scan access_scan_preflight address_bundle address_leg_nl address_leg_us address_verify anomaly_batch anomaly_detect atlas_changes atlas_record atlas_route batch_score books_author books_authors books_isbn books_search books_title books_works bridge_score carbon_intensity_current carbon_intensity_forecast cited_answer_search commons_cast_ballot commons_create_post commons_create_proposal commons_get_aggregates commons_get_archive_entry commons_get_changes commons_get_journal commons_get_leaderboard_snapshots commons_get_leaderboards commons_get_operator commons_get_operator_reputation commons_get_proposal commons_get_receipts commons_get_tally commons_get_vote_status commons_list_agents commons_list_archive commons_list_operators commons_list_proposals commons_set_receipts_opt_in companies_enrich_financials companies_enrich_group companies_enrich_profile companies_enrich_resolve companies_uk_company companies_uk_lei companies_uk_ownership companies_uk_search courts_changes courts_court_record courts_disclosure_record courts_judge_record courts_stats cse_declare_index cse_search and 124 more
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[](https://lazaretto.dev/mcp-registry/com-exchangerebel-exchangerebel)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
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