x402 Gateway — Inspect Paid API Terms

Server Details

Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.

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Status: Unhealthy
Last Tested: 2026-09-21 02:41
Transport: Streamable HTTP
URL
Server Listing: mcp-x402

TDQS

B3.4/5.0

Scored 2026-09-05 10:50 across 3 tools

Disambiguation4/5

Each tool has a distinct role: discover locates the gateway and requirement sources, status checks the live identity and payment rail, and contract inspects the on-chain details. There is minor overlap between discover and contract, but the descriptions clearly differentiate their intentions.

Naming Consistency2/5

Naming is inconsistent: two tools use the 'sml_' prefix while the third uses 'x402_', and the suffix styles mix a verb (discover) with nouns (status, contract). This makes the set feel less predictable and harder to scan.

Tool Count4/5

Three tools is lean but well-suited for the narrow domain of x402 gateway discovery and inspection. Each tool earns its place, and the count feels appropriate rather than sparse or bloated.

Completeness4/5

The tools cover discovery, live status, and on-chain contract inspection, which appears to be the full intended scope for this gateway-focused server. No obvious missing operations are apparent from the stated purpose.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

98 tool updatesSep 5, 2026
- Removedagentcard_lookup
- Removedagentcard_mint
- Removedagentcard_verify
- Removedapm_execute
- Removedapm_negotiate
- Removedbacktest_run
- Removedbacktest_validate
- Removedbeacon_scout
- Removedcopytrader_status
- Removedcopytrader_subscribe
- Removedcopytrader_whales
- Removedcrawl_paid_fetch
- Removedcrypto_token_price
- Removedcrypto_trending
- Removedequities_heatmap_full
- Removedequities_heatmap_preview
- Removedfederal_clinical_trials
- Removedfederal_congress_bills
- Removedfederal_drug_adverse_events
- Removedfederal_drug_label
- Removedfederal_drug_recall
- Removedfederal_entity_compliance
- Removedfederal_epa_violations
- Removedfederal_fec_finance
- Removedfederal_finra_broker
- Removedfederal_grants
- Removedfederal_grants_gov
- Removedfederal_insider_trades
- Removedfederal_lobbying
- Removedfederal_npi_lookup
- Removedfederal_options_flow
- Removedfederal_osha
- Removedfederal_patents
- Removedfederal_sam_entity
- Removedfederal_sam_opportunities
- Removedfederal_sba_awards
- Removedfederal_sbir_grants
- Removedfederal_sec_filings
- Removedfederal_treasury_yields
- Removedfederal_usaspending_awards
- Removedforge_llm
- Removedforge_status
- Removedftd_threshold_scan
- Removedfx_exchange_rate
- Removedget_agent_magnet_beacons
- Removedget_beacon_passport
- Removedget_beacon_score
- Removedghost_route
- Removedghost_status
- Removedhcv_fmr
- Removedhousing_landlord_checklist
- Removedhud_vash_contacts
- Removedlaunchpad_buy
- Removedlaunchpad_create
- Removedlaunchpad_list
- Removedlaunchpad_status
- Removedleviathan_signal
- Removedlist_magnets
- Removednexus_agent_hire
- Removedoptions_delta_heatmap_full
- Removedoptions_delta_heatmap_preview
- Removedpha_lookup
- Removedpha_opportunities
- Removedpha_search
- Removedproof_credit_score
- Removedproof_invoice
- Removedproof_verify
- Removedrails_status
- Removedrails_transfer
- Removedrobinhood_order
- Removedrobinhood_portfolio
- Removedrobinhood_quote
- Removedscreen_restricted_party
- Removedsearch_trade_leads
- Removedsection8_fmr
- Removedsection8_geo_lookup
- Removedsection8_income_limits
- Removedshadow_ingest
- Removedshadow_query
- Removedsqueezeos_council
- Removedsqueezeos_demo
- Removedsqueezeos_ftd
- Removedsqueezeos_futures_leaderboard
- Removedsqueezeos_history
- Removedsqueezeos_iwm
- Removedsqueezeos_marketplace_browse
- Removedsqueezeos_marketplace_read
- Removedsqueezeos_options
- Removedsqueezeos_oracle
- Removedsqueezeos_preview
- Removedsqueezeos_scan
- Removedsqueezeos_status
- Removedtradier_order
- Removedtradier_positions
- Removedtradier_quote
- Addedx402_contract
- Removedxdeo_earnings_estimate
- Removedxmit_edgar_decode
235 tool updatesSep 2, 2026
- Addedagentcard_lookup
- Addedagentcard_mint
- Addedagentcard_verify
- Removedai_fact_check
- Removedairdrop_check
- Addedapm_execute
- Addedapm_negotiate
- Changedbacktest_run10 fields changed
  - addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
  - changedInput schema / additionalProperties
```
Previous value: -trueNew value: +false
```
  - addedInput schema / properties / fees
```
Added value: +{
+  "description": "Round-trip commission rate (default 0.001 = 0.1%)",
+  "type": "number"
+}
```
  - addedInput schema / properties / lookback_days
```
Added value: +{
+  "description": "Days of history to backtest (30–1260, default 252)",
+  "type": "number"
+}
```
  - addedInput schema / properties / momentum_threshold
```
Added value: +{
+  "description": "Minimum momentum to enter long (default 0.001)",
+  "type": "number"
+}
```
  - addedInput schema / properties / momentum_window
```
Added value: +{
+  "description": "Momentum rolling window in days (default 10)",
+  "type": "number"
+}
```
  - addedInput schema / properties / slippage
```
Added value: +{
+  "description": "Slippage per side (default 0.0005)",
+  "type": "number"
+}
```
  - addedInput schema / properties / ticker
```
Added value: +{
+  "description": "Ticker symbol (e.g. NVDA, SPY, GME)",
+  "type": "string"
+}
```
  - addedInput schema / properties / wallet_address
```
Added value: +{
+  "description": "Agent wallet address (optional)",
+  "type": "string"
+}
```
  - changedInput schema / required
```
Previous value: -[]New value: +[
+  "ticker",
+  "lookback_days",
+  "fees",
+  "slippage",
+  "momentum_window",
+  "momentum_threshold",
+  "wallet_address"
+]
```
- Removedbacktest_strategies
- Removedbacktest_sweep
- Addedbacktest_validate
- Removedbase_rpc
- Removedbase64_encode
- Addedbeacon_scout
- Removedbinance_funding
- Removedbinance_ticker
- Removedbtc_mempool_fees
- Removedbtc_price
- Removedcalculator
- Removedclinical_trials_search
- Removedcoingecko_categories
- Removedcompliance_anomaly_report
- Removedcompliance_bank_audit
- Removedcompliance_regulator_query
- Removedcongressional_bills_search
- Addedcopytrader_status
- Addedcopytrader_subscribe
- Addedcopytrader_whales
- Addedcrawl_paid_fetch
- Removedcrypto_global
- Removedcrypto_news
- Removedcrypto_penny_squeeze_scanner
- Removedcrypto_price
- Removedcrypto_squeeze_scanner
- Addedcrypto_token_price
- Addedcrypto_trending
- Removedcsv_to_json
- Removeddefi_analytics
- Removeddefi_chains_tvl
- Removeddefi_protocol_tvl
- Removeddefi_tvl_ranking
- Removeddefi_yield
- Removeddefi_yield_rates
- Removeddefi_yields_pools
- Removeddexscreener_boosts
- Removeddexscreener_search
- Removeddomain_enrich
- Removeddruckenmiller_macro_regime_analysis
- Removedemail_validate
- Removedentity_compliance_check
- Removedepa_environmental_violations
- Addedequities_heatmap_full
- Addedequities_heatmap_preview
- Removedeth_price
- Removedeth_rpc
- Removedexcluded_parties_check
- Removedfda_adverse_events_report
- Removedfda_drug_recall_alert
- Removedfda_food_recalls
- Removedfda_warning_letters
- Removedfear_greed_index
- Removedfec_campaign_finance
- Removedfederal_award_history
- Addedfederal_clinical_trials
- Addedfederal_congress_bills
- Removedfederal_contract_opportunities
- Addedfederal_drug_adverse_events
- Addedfederal_drug_label
- Addedfederal_drug_recall
- Addedfederal_entity_compliance
- Addedfederal_epa_violations
- Addedfederal_fec_finance
- Addedfederal_finra_broker
- Addedfederal_grants
- Addedfederal_grants_gov
- Addedfederal_insider_trades
- Addedfederal_lobbying
- Addedfederal_npi_lookup
- Addedfederal_options_flow
- Addedfederal_osha
- Addedfederal_patents
- Addedfederal_sam_entity
- Addedfederal_sam_opportunities
- Addedfederal_sba_awards
- Addedfederal_sbir_grants
- Addedfederal_sec_filings
- Removedfederal_spending_by_agency
- Addedfederal_treasury_yields
- Addedfederal_usaspending_awards
- Addedforge_llm
- Addedforge_status
- Removedfred_economic_indicators
- Addedftd_threshold_scan
- Removedfunding_rates
- Addedfx_exchange_rate
- Removedfx_rate
- Removedgas_tracker
- Removedgeckoterminal_trending
- Changedget_agent_magnet_beacons5 fields changed
  - addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
  - changedInput schema / properties / limit / description
```
Previous value: -"Optional max paid beacons."New value: +"Optional max paid+free beacons in the set."
```
  - addedInput schema / properties / limit / maximum
```
Added value: +500
```
  - addedInput schema / properties / limit / minimum
```
Added value: +1
```
  - removedInput schema / required
```
Removed value: -[]
```
- Addedget_beacon_passport
- Addedget_beacon_score
- Addedghost_route
- Addedghost_status
- Removedhash_compute
- Addedhcv_fmr
- Removedhex_convert
- Removedhmac_compute
- Removedhoneypot_check
- Addedhousing_landlord_checklist
- Removedhttp_check
- Addedhud_vash_contacts
- Removedhyperliquid_all_mids
- Removedhyperliquid_meta
- Removedip_info
- Removedjson_to_csv
- Removedjson_to_yaml
- Removedjson_validate
- Removedjwt_decode
- Removedkeyword_extract
- Removedl2_activity
- Addedlaunchpad_buy
- Addedlaunchpad_create
- Addedlaunchpad_list
- Addedlaunchpad_status
- Addedleviathan_signal
- Removedliquidation_risk_check
- Changedlist_magnets9 fields changed
  - addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
  - addedInput schema / properties / limit / maximum
```
Added value: +200
```
  - addedInput schema / properties / limit / minimum
```
Added value: +1
```
  - addedInput schema / properties / min_imp_score
```
Added value: +{
+  "description": "Minimum IMP imp_score filter 0-1 (preferred).",
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
```
  - changedInput schema / properties / min_strength / description
```
Previous value: -"Minimum magnet_strength 0-1 filter."New value: +"Minimum magnet_strength filter 0-1 (legacy)."
```
  - addedInput schema / properties / min_strength / maximum
```
Added value: +1
```
  - addedInput schema / properties / min_strength / minimum
```
Added value: +0
```
  - addedInput schema / properties / sort
```
Added value: +{
+  "description": "Rank key (default imp_score).",
+  "enum": [
+    "imp_score",
+    "magnet_strength"
+  ],
+  "type": "string"
+}
```
  - removedInput schema / required
```
Removed value: -[]
```
- Removedllm_chat
- Removedlobbying_disclosures
- Removedmarket_regime_indicator
- Removednew_token_detection
- Removednews_headlines
- Addednexus_agent_hire
- Removednumber_format
- Removedopenfda_drug_label
- Addedoptions_delta_heatmap_full
- Addedoptions_delta_heatmap_preview
- Removedosha_inspection_records
- Removedpenny_squeeze_scanner
- Removedpercentage
- Removedperp_funding_aggregator
- Addedpha_lookup
- Addedpha_opportunities
- Addedpha_search
- Addedproof_credit_score
- Addedproof_invoice
- Addedproof_verify
- Addedrails_status
- Addedrails_transfer
- Removedregex_test
- Addedrobinhood_order
- Addedrobinhood_portfolio
- Addedrobinhood_quote
- Removedrobots_check
- Removedrugpull_detector
- Removedrwa_aggregates
- Removedrwa_assets
- Removedrwa_intelligence
- Removedrwa_risk
- Removedrwa_valuation
- Removedsam_entity_verification
- Removedsam_opportunities
- Addedscreen_restricted_party
- Removedsdvosb_setaside_feed
- Addedsearch_trade_leads
- Removedsec_10_k_annual_filing
- Removedsec_10_q_quarterly_filing
- Removedsec_13d_13g_activist_filings
- Removedsec_13f_institutional_holdings
- Removedsec_8_k_real_time_filings
- Removedsec_company_tickers
- Removedsec_insider_trade_intel
- Addedsection8_fmr
- Addedsection8_geo_lookup
- Addedsection8_income_limits
- Removedsemver_compare
- Addedshadow_ingest
- Addedshadow_query
- Removedsitemap_reader
- Removedsmart_money_alerts
- Addedsml_discover
- Addedsml_status
- Removedsocial_search
- Removedsol_price
- Removedsqueeze_scanner
- Addedsqueezeos_council
- Addedsqueezeos_demo
- Addedsqueezeos_ftd
- Addedsqueezeos_futures_leaderboard
- Addedsqueezeos_history
- Addedsqueezeos_iwm
- Addedsqueezeos_marketplace_browse
- Addedsqueezeos_marketplace_read
- Addedsqueezeos_options
- Addedsqueezeos_oracle
- Addedsqueezeos_preview
- Addedsqueezeos_scan
- Addedsqueezeos_status
- Removedstablecoin_flow_tracker
- Removedstablecoin_mcap
- Removedstablecoin_watch
- Removedstatistics
- Removedtext_case_convert
- Removedtext_diff
- Removedtext_slugify
- Removedtext_stats
- Removedtls_cert
- Removedtoken_details
- Removedtoken_security_audit
- Removedtoken_top_markets
- Addedtradier_order
- Addedtradier_positions
- Addedtradier_quote
- Removedtreasury_yields
- Removedtrending_altcoins
- Removedtrending_tokens
- Removedtx_status
- Removedunit_convert
- Removedurl_parse
- Removedus_gov_search
- Removedus_weather_alerts
- Removedusdc_balance
- Removeduseragent_parse
- Removedusgs_earthquakes
- Removedwallet_analysis
- Removedwallet_analyzer
- Removedweb_fetch
- Removedweb_markdown
- Removedweb_search
- Removedwhois_rdap
- Removedx402_market_pulse
- Addedxdeo_earnings_estimate
- Addedxmit_edgar_decode
- Removedxml_to_json
- Removedyaml_to_json
3 tool updatesAug 8, 2026
- Addedbacktest_run
- Addedbacktest_strategies
- Addedbacktest_sweep
136 tool updatesAug 8, 2026
- First observedai_fact_check
- First observedairdrop_check
- First observedbase_rpc
- First observedbase64_encode
- First observedbinance_funding
- First observedbinance_ticker
- First observedbtc_mempool_fees
- First observedbtc_price
- First observedcalculator
- First observedclinical_trials_search
- First observedcoingecko_categories
- First observedcompliance_anomaly_report
- First observedcompliance_bank_audit
- First observedcompliance_regulator_query
- First observedcongressional_bills_search
- First observedcrypto_global
- First observedcrypto_news
- First observedcrypto_penny_squeeze_scanner
- First observedcrypto_price
- First observedcrypto_squeeze_scanner
- First observedcsv_to_json
- First observeddefi_analytics
- First observeddefi_chains_tvl
- First observeddefi_protocol_tvl
- First observeddefi_tvl_ranking
- First observeddefi_yield
- First observeddefi_yield_rates
- First observeddefi_yields_pools
- First observeddexscreener_boosts
- First observeddexscreener_search
- First observeddomain_enrich
- First observeddruckenmiller_macro_regime_analysis
- First observedemail_validate
- First observedentity_compliance_check
- First observedepa_environmental_violations
- First observedeth_price
- First observedeth_rpc
- First observedexcluded_parties_check
- First observedfda_adverse_events_report
- First observedfda_drug_recall_alert
- First observedfda_food_recalls
- First observedfda_warning_letters
- First observedfear_greed_index
- First observedfec_campaign_finance
- First observedfederal_award_history
- First observedfederal_contract_opportunities
- First observedfederal_spending_by_agency
- First observedfred_economic_indicators
- First observedfunding_rates
- First observedfx_rate
- First observedgas_tracker
- First observedgeckoterminal_trending
- First observedget_agent_magnet_beacons
- First observedhash_compute
- First observedhex_convert
- First observedhmac_compute
- First observedhoneypot_check
- First observedhttp_check
- First observedhyperliquid_all_mids
- First observedhyperliquid_meta
- First observedip_info
- First observedjson_to_csv
- First observedjson_to_yaml
- First observedjson_validate
- First observedjwt_decode
- First observedkeyword_extract
- First observedl2_activity
- First observedliquidation_risk_check
- First observedlist_magnets
- First observedllm_chat
- First observedlobbying_disclosures
- First observedmarket_regime_indicator
- First observednew_token_detection
- First observednews_headlines
- First observednumber_format
- First observedopenfda_drug_label
- First observedosha_inspection_records
- First observedpenny_squeeze_scanner
- First observedpercentage
- First observedperp_funding_aggregator
- First observedregex_test
- First observedrobots_check
- First observedrugpull_detector
- First observedrwa_aggregates
- First observedrwa_assets
- First observedrwa_intelligence
- First observedrwa_risk
- First observedrwa_valuation
- First observedsam_entity_verification
- First observedsam_opportunities
- First observedsdvosb_setaside_feed
- First observedsec_10_k_annual_filing
- First observedsec_10_q_quarterly_filing
- First observedsec_13d_13g_activist_filings
- First observedsec_13f_institutional_holdings
- First observedsec_8_k_real_time_filings
- First observedsec_company_tickers
- First observedsec_insider_trade_intel
- First observedsemver_compare
- First observedsitemap_reader
- First observedsmart_money_alerts
- First observedsocial_search
- First observedsol_price
- First observedsqueeze_scanner
- First observedstablecoin_flow_tracker
- First observedstablecoin_mcap
- First observedstablecoin_watch
- First observedstatistics
- First observedtext_case_convert
- First observedtext_diff
- First observedtext_slugify
- First observedtext_stats
- First observedtls_cert
- First observedtoken_details
- First observedtoken_security_audit
- First observedtoken_top_markets
- First observedtreasury_yields
- First observedtrending_altcoins
- First observedtrending_tokens
- First observedtx_status
- First observedunit_convert
- First observedurl_parse
- First observedus_gov_search
- First observedus_weather_alerts
- First observedusdc_balance
- First observeduseragent_parse
- First observedusgs_earthquakes
- First observedwallet_analysis
- First observedwallet_analyzer
- First observedweb_fetch
- First observedweb_markdown
- First observedweb_search
- First observedwhois_rdap
- First observedx402_market_pulse
- First observedxml_to_json
- First observedyaml_to_json

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