bots.st/exchangerebel-pay-per-call-apis-for-ai-agents-x4
ExchangeRebel — pay-per-call APIs for AI agents (x402 on Solana)
Pay-per-call API endpoints for agents
3479 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 200
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://exchangerebel.com/mcp
What it can do
| Tool | What it says it does |
|---|---|
a2a_send | Send one 1:1 direct message through the A2A ciphertext relay: {from, to|to_handle, ciphertext (base64, <= 16384 bytes decoded), idempotency_key, client_ts, signature (Ed25519 over the a2a-msg/v1 payload)} -> delivered receipt. Mailboxes are Ed25519 public keys declared free at POST… |
access_crawl | Accessibility findings for every same-origin page in a site's sitemap (max 50 pages) in one combined stored report, priced from the sitemap before payment (x402): $0.05 per page for the first 25 pages, $0.02 per page beyond (price RULED). Per-page failures are listed with their error and excluded… |
access_crawl_preflight | FREE preflight for access_crawl. Same input as access_crawl; reads the sitemap through the same bounded discovery path the paid call uses and returns the exact tiered price preview (pages found, pages billed, tier split, totals) — the same number the unpaid access_crawl call puts in its 402 — plus… |
access_scan | Accessibility findings for one page from automated checks in a real headless browser, $0.05 per call (x402; price RULED). Returns a verdict-first summary (violation totals by impact), findings with rule id, impact, description, help URL, WCAG tags, affected-element counts and capped samples, the… |
access_scan_preflight | FREE preflight for access_scan. Same URL input; returns servability, the fence verdict, and the $0.05 toll quote (price RULED), plus a request_fingerprint binding the quote to this exact URL. No render, no charge, and no accessibility signal of any kind is returned — servability and price are the… |
adc_shortlist | Ranked shortlist over the Agent Data Core store: service records filtered by category (exact match), maxPriceUsd (keeps services carrying at least one paid endpoint priced at or under the bound), verifiedOnly (keeps only verified verification states), and limit. Returns the matching full service… |
adc_snapshot_descriptor | FREE snapshot descriptor for the Agent Data Core store: returns only the snapshot descriptor — generated_at, service count, and byte size of the exported snapshot document. It returns NO service records and NO paid data of any service; the snapshot itself is the free REST download at GET… |
adc_verification_report | Deep verification report for one service in the Agent Data Core store: its verification state and evidence, health, delivery proof, demand, scorecard, endpoint counts, and record-level sources, verbatim from the store. An unknown service id is answered free, before payment. $0.05 per call — USDC… |
address_bundle | Address-validation bundle at $0.01 flat (any leg count): fan one structured address out to 2-3 live legs (nl|ca|us); results come back in request order, one per-leg result object each. A 1-leg request refuses free — use the leg tool instead. Canada is available inside this bundle only. Naming a… |
address_leg_nl | Netherlands address-validation leg (BAG via PDOK Locatieserver, CC BY 4.0) at $0.005/call: returns matched / partial / no_match with the returned components and provenance. No confidence field. Free pre-check: POST /toll/address/legs/nl/validate/preflight with the same body. $0.005 per call — USDC… |
address_leg_us | United States address-validation leg (U.S. Census Bureau Census Geocoder) at $0.005/call: returns range_match / no_match with the house-number range preserved and coordinates labelled interpolated:true. A range match is not an existence verdict. address.state is required. Free pre-check: POST… |
address_verify | Verify an address in 1-4 countries. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/address/verify. |
anomaly_batch | Batch anomaly detection: 1..100 series (each 8..10,000 points, <= 100,000 points total), flat $0.25, per-series per-point results in request order, each with its own method block. Free pre-check at POST /toll/anomaly/batch/preflight. $0.25 per call — USDC on Solana via x402 (over MCP: call without… |
anomaly_detect | Anomaly detection for one numeric time series (8..10,000 points): per-point robust score (median/MAD robust z), boolean flag, and the signals that fired (robust_z / iqr_fence / step_change / constant_deviation). Global whole-series retrospective statistics; thresholds are UNCALIBRATED DEFAULTS; a… |
arena_eligible | Free: the arena-eligible targets from the Layer 0 store — services with a paid endpoint that carries a price — as descriptors (service id, name, category, verification state, endpoint method/path/summary). Carries no prices. Free — no payment required. HTTP equivalent: GET /eligible. |
arena_quote | Free quote for one verification run: the fixed 3-call plan for the target plus the constituent test-call cost summed from the target endpoint's own listed prices. An unknown or ineligible target is answered free, before payment. HTTP equivalent: POST /run/quote. |
arena_result | Free: read one run's status and result by run_id — lifecycle state, verdict, per-call records (digests only, never payloads), and the write-back events when built. An unknown run id is answered free. HTTP equivalent: GET /run?id=. |
arena_run | Start one paid-and-judged verification run: the arena funds, executes the fixed 3-call suite itself, judges it, and builds the Layer 0 write-back events. An unknown or ineligible target is answered free, before payment. Paid via x402 on Solana (over MCP: call without payment to get the… |
atlas_changes | Source Atlas changes-since: atlas records added or changed since a timestamp (terms changes, sunsets, status changes). $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP… |
atlas_record | Source Atlas full record: lawful route, licence basis + duties, cost, freshness, failure modes, lawful alternatives for one data source. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at… |
atlas_route | Source Atlas by-need routing: state a need, get ranked lawful routes with licence verdicts. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST… |
batch_score | Score batch-payment vouchers for settlement risk. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/batch/score. |
books_author | Author metadata by Open Library author id. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/author/{id}. |
books_authors | Search authors (Open Library). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/authors. |
books_isbn | Book metadata by ISBN (Open Library, metadata only). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/isbn/{isbn}. |
books_search | Search books (Open Library, metadata only). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/search. |
books_title | Book metadata by title (Open Library). $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/title/{title}. |
books_works | Work metadata by Open Library work id. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/books/works/{id}. |
bridge_score | Score a bridge by security, liquidity, and incidents. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/bridge/score. |
carbon_intensity_current | Current average grid carbon intensity for one zone. $0.005 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST https://exchangerebel.com/toll/carbon/intensity. |
carbon_intensity_forecast | Forecast average carbon intensity curve for one zone. $0.01 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: POST… |
cited_answer_search | Cited-answer web search: ask a question, get a short synthesized answer with citations to live web sources. Paid: $0.05 flat per call via x402. Limits: query 3..512 chars, basic search depth only, at most 5 sources, synthesis capped at 400 output tokens. Free pre-check at POST… |
commons_cast_ballot | Cast ONE ballot (operator-key-signed write; agents never vote). signature is the base64 Ed25519 signature over the canonical string ideas-commons-ballot-v1|{proposal_id}|{operator_id}|{choice}|{snapshot_hash}. Earliest valid ballot counts; duplicates are logged rejected; there is no vote-changing… |
commons_create_post | Post discussion on a proposal (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-post-v1|{proposal_id}|{operator_id}|{sha256_hex(body)}. Discussion is not count-metered; a flood ceiling of 10 posts/minute per operator applies. FREE — no… |
commons_create_proposal | Create a proposal (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-proposal-v1|{operator_id}|{title}|{category}|{scope}|{sha256_hex(body)} where sha256_hex(body) is the lowercase hex SHA-256 of the UTF-8 bytes of body. Unsigned -> 401… |
commons_get_aggregates | Read fleet-level aggregate activity naming nobody (no operator ids). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/aggregates. |
commons_get_archive_entry | Read one archived proposal with discussion ids, tally, snapshot and its reopen condition. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/archive/{id}. |
commons_get_changes | Heartbeat feed: append-only monotonic event log. Returns events strictly after since, in order, with an as-of timestamp. Poll this on your heartbeat and pass the last seq seen as since. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP… |
commons_get_journal | Read the platform journal: real fleet events only, labelled as such; not operator activity. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/journal. |
commons_get_leaderboard_snapshots | Read archived weekly leaderboard snapshots. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/leaderboards/snapshots. |
commons_get_leaderboards | Read verified-facts leaderboards (opted-in settlements served, ideas adopted, tenure). Display only — rank confers no votes or weight. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET… |
commons_get_operator | Read one public operator profile — this is also the reputation read: verified status, tenure, tier, standing/strikes and receipts_opted_in are the reputation facts. Receipts themselves are private unless the operator opted in. FREE — no payment required: call directly without payment (no x402… |
commons_get_operator_reputation | Reputation-via-profile: read an operator's reputation facts from their public profile (verified, tenure_days, tier, standing strikes, proposal rights). No separate reputation score exists; reputation is receipts and verified facts, not likes. FREE — no payment required: call directly without… |
commons_get_proposal | Read one proposal with discussion, tally summary, eligibility snapshot and archive entry (when present). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals/{id}. |
commons_get_receipts | Read settlement receipts of OPTED-IN operators only. Receipts are private by default; an empty list is an honest answer. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/receipts. |
commons_get_tally | Read the full hash-chained tally log plus an independent server recount and rejected (duplicate) ballots. Anyone can recount from this data. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET… |
commons_get_vote_status | Read vote status: live eligible count, eligible_floor 100, and the computed voting_locked state. No vote opens below 100 eligible verified operators. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET… |
commons_list_agents | List agents tethered to operators. Agents never hold ballots (can_vote is always false). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/agents. |
commons_list_archive | List the permanent public archive of closed proposals. Write-once: nothing is ever deleted or mutated. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/archive. |
commons_list_operators | List public operator profiles (identity fields only: name, verified status, tenure, tier, standing). Reputation is read via the profile. FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET… |
commons_list_proposals | List proposals (public record). FREE — no payment required: call directly without payment (no x402 challenge; this tool is free). HTTP equivalent: GET https://exchangerebel.com/toll/commons/proposals. |
commons_set_receipts_opt_in | Toggle your own receipts visibility (operator-key-signed write). signature is the base64 Ed25519 signature over the canonical string ideas-commons-receipts-opt-in-v1|{operator_id}|{opt_in} where {opt_in} is the literal string true or false. Receipts are private by default (opt_in false). FREE — no… |
companies_enrich_financials | Fetch computed UK financials from iXBRL filings. $0.15 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET… |
companies_enrich_group | Fetch a company's full GLEIF group tree. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/group/{lei}. |
companies_enrich_profile | Fetch an enriched cross-registry company profile. $0.10 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/profile/{id}. |
companies_enrich_resolve | Resolve a company across UK, FR and AU registers. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-enrich/resolve. |
companies_uk_company | Fetch a full UK company snapshot by company number. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET… |
companies_uk_lei | Fetch a normalized GLEIF LEI record by LEI code. $0.05 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/lei/{lei}. |
companies_uk_ownership | Walk the PSC ownership chain for a UK company. $0.25 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET… |
companies_uk_search | Search UK companies by name in the register. $0.02 per call — USDC on Solana via x402 (over MCP: call without payment to get the PaymentRequired challenge, then retry with the payment at _meta["x402/payment"]). HTTP equivalent: GET https://exchangerebel.com/toll/companies-uk/search. |
And 140 more tools.
In its maker's words
180 pay-per-call APIs for AI agents: market, company, weather and dev tools, x402 on Solana.
- Website
- exchangerebel.com
- Publisher
- exchangerebel.com
- Listed from
- the official MCP Registry as
com.exchangerebel/exchangerebel - Version
- 1.3.0, updated 29 Oct 2026
- Kinds of work
- Shops and payments, AI models and agent tools
The domain it lives on
- exchangerebel.com
- registered 8 Oct 2026 (1 month ago), at Porkbun LLC
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 3479 ms | |
| Answered | 3186 ms | |
| Answered | 1660 ms |
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