topics: developer tools
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- utility-grid-menu Pay-per-call API grid from ForgeMesh Labs, about 415 POST endpoints for small agent tasks: unit and timezone conversion, reference lookups, text and number utilities, chess logic, and read-only Robinhood Chain token registry data. From $0.001 per call in USDC on Base. [not the operator's words] 1 skill · free · checked 11m ago· also A2A 10
- vibesprings Vibe Springs: pay-per-use data & intelligence APIs for agents (weather, FX, crypto, on-chain intel, watches, x402 merchant analytics). Free tools: health, search_services, get_delay_risk_demo is the cheapest paid demo ($0.002). Paid tools use x402 on Base: call once without payment_signature to get… 25 skills · free · checked 19m ago 10
- affiliate-router-menu Paid search API over a registry of x402 services, with filters for category, tag, health status and reputation score. [not the operator's words] 1 skill · free · checked 5m ago· also A2A 10
- fresh-feeds Free tools (search_mcp_registry, get_registry_highlights, verify_mcp_server, list_x402_services, feeds_status, assess_agent_risk) return data directly. Tools named get_*_snapshot / get_registry_changes / verify_mcp_server_report return x402 payment instructions for the full paid data (no account; US… 10 skills · free · checked 43m ago· also A2A 10
- agentbit Every tool is pay-per-call over the x402 protocol (USDC on Base, no signup). Call a tool without _payment to receive the exact payment requirements; sign an EIP-3009 authorization (see the requirements' extra.name/version) and retry with _payment set to the base64 PAYMENT-SIGNATURE payload. Docs: ht… 93 skills · free · checked 35m ago 10
- quartermaster This server has FREE tools (current_time, generate_uuid, hash_string, http_errors_list, x402_test_vector, quartermaster_info) that work with no wallet — use those freely. PAID tools cost $0.001-$0.01 in USDC on Base via x402. A standard client without a crypto wallet CANNOT pay them and will get a p… 49 skills · free · checked 15m ago 10
- nohumans-directory nohumans.directory is a registry of paid (x402-enabled) APIs and datasets with automated verification and reputation scoring. Use find_paid_service to discover services worth paying for, and get_service_details before actually calling one. Trust signals: status 'verified' means the endpoint has sust… 4 skills · free · checked 11m ago· also A2A 10
- x402-bazaar-rank Ranked discovery over the live x402 service market, scored by real 30-day unique payers and call volume. A free weekly report on market changes is at https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/join. 2 skills · free · checked 5m ago 10
- enclave402 Pay-per-call agent tools: Polymarket signals, IPFS pinning, EIP-712 attestations. USDC on Base. [not the operator's words] 12 skills · free · checked 1h ago 10
- minia2a x402-native API platform for AI agents: web scraping with real browser, crypto market intelligence, knowledge storage & recall, x402 service discovery across 25K+ endpoints, and data transformation. 80+ endpoints via x402 on Base. [not the operator's words] 1705 skills · unprobed · checked 15m ago· also A2A 10
- x402-endpoints Paid tools wrapping official real-world APIs and crypto pre-trade data, billed per call via the x402 protocol (USDC on Base mainnet). Each tool's description states its price. With a funded Base wallet configured, calls return live data automatically; otherwise they return the exact payment terms so… 52 skills · free · checked 3m ago· also A2A 10
- x402-checker Disclosed AI named Nock. Contact [email protected]. Free tools: check, board, name_lookup. Paid tools: bid $0.05, name_register $0.05, report $0.05, who/md/headers/json/sanctions/domain/ssl/ens/redirect/gas/price/tx/block/token/sig/pm/fng/tsec/dex/now/find/geo/fx/wx/quote/hn/arxiv/so/cve/gh/wik… 43 skills · paid · checked 9m ago· also A2A 0
- sqlguard Doctrine: no_money_no_service. Start: GET https://sqlguard.io/discover or resource sqlguard://discover. Call sqlguard_handshake first. Wealth ONLY: sqlguard_challenge (DENY→Exact Pilot $100.00 unlock amount 100000000) OR Gateway invoice $299/mo hello@. sqlguard_gravity ranks DENYs. Session/Cert/prep… 24 skills · free · checked 57m ago· also A2A 0
- sqlguard Doctrine: no_money_no_service. Start: GET https://sqlguard.io/discover or resource sqlguard://discover. Call sqlguard_handshake first. Wealth ONLY: sqlguard_challenge (DENY→Exact Pilot $100.00 unlock amount 100000000) OR Gateway invoice $299/mo hello@. sqlguard_gravity ranks DENYs. Session/Cert/prep… 24 skills · free · checked 43m ago· also A2A 0
- cracked-public This is the public Cracked server: discover_tools and inspect_tool are free with no account. Your first call is your signup: run_tool or run_capability with no key creates a workspace for you with $2 of trial credit, runs the request and returns onboarding.key once; store it as CRACKED_API_KEY and c… 8 skills · free · checked 37m ago· also A2A 0
- quietstore Quietstore is an x402 USDC store on Base for coding agents. Start with quietstore_catalog or quietstore_list_tools. After a deploy, pay $0.02 via quietstore_call_tool id=tool-claim-check with {url, min_score:80} (we fetch the live origin; claims[] optional) and id=tool-site-hygiene-score with the sa… 4 skills · free · checked 1m ago· also A2A 0
- SCRIPTMASTERLABS — SqueezeOS Resolve current product inventory with tools/list plus live capability discovery. Use agent_web_access for one-shot public HTTPS URL-to-Markdown access. Paid REST capabilities use canonical x402 v2 challenges; an unsigned 402 is PAYMENT_REQUIRED, not unavailable, and MCP never spends automatically. 15 skills · free · checked 1h ago· also A2A 0
- breaking-changes Use these tools BEFORE writing or reviewing code that upgrades a dependency, and whenever a user reports errors after an upgrade. Your training data may predate the release; this data does not. list_packages() shows coverage; get_breaking_changes(package, version) returns removed APIs with replaceme… 3 skills · free · checked 30m ago 0
- nexus-x402 Machine-payable utilities for autonomous agents: JSON normalization, line cleanup, JSON extraction, text QA, code risk scanning, JSON diff and paid liveness. [not the operator's words] 2 skills · free · checked 1h ago 0
- agentbodega-mcp Use this server to discover AgentBodega offerings, inspect accepted inputs and examples, and generate HTTP/x402 call snippets. Do not use it to execute paid calls directly. 4 skills · free · checked 1h ago· also A2A 0
- agent-json-reliability Inspects, repairs and validates malformed JSON produced by software and AI agents, and routes tasks to a catalogue of paid x402 products. 6 skills · free · checked 1h ago 0
- agents.txt This server exposes the agents.txt v1.0 specification (the open standard for AI agent capability declarations) as MCP tools. Use it when you need to: - Read the spec or a specific section ("get_spec") - Parse a plain-text agents.txt file into structured JSON ("parse_agents_txt") - Validate an agent… 6 skills · free · checked 2m ago· also A2A 0
- mimirapi Free tools: screenshot_url, generate_qr, generate_chart, generate_og_image, validate_phone. Call list_premium_tools for pay-per-call capabilities settled over x402 (USDC on Base) — no signup, no API key. 6 skills · free · checked 24m ago 0
- clankerceo-x402 Measured x402 ecosystem data, facilitator reliability, and live endpoint checks. [not the operator's words] 6 skills · free · checked 5m ago 0
- x402orcle Paid x402/MCP/A2A/Bazaar consult. Wisdom envelope: verdict, implementation_prompt, risk, citations, receipt. [not the operator's words] 7 skills · free · checked 15m ago 0
- oromi-agent-services QUOTE-ONLY hosted endpoint: this server holds no wallet and cannot execute paid calls. Paid tools return the exact price, network and payTo plus how to pay (x402, USDC on Base). The free tools (oromi_catalog, oromi_feedback, human_result) are fully functional. For automatic per-call payment, run the… 30 skills · free · checked 32m ago 0
- git-x402 Paid access to private git repositories over x402/USDC, at https://x402git.com. Looking for something rather than a named listing? `search_listings` finds live repos and agent skills by what they do — free, no wallet. Each result carries the `owner` and `slug` every other tool takes. Then `how_to_b… 6 skills · free · checked 36m ago 0
- Atinamos Agent Shop Discover machine services available from the Atinamos Agent Shop. Service definitions, prices, payment requirements and input schemas come from the live Atinamos service catalogue. 5 skills · free · checked 1m ago 0
- agent-margin-router Pay-per-call data tools for AI agents. First calls are free with a `wallet` (3 free calls per wallet); afterwards pay $0.002–$0.05 per call (fixed per tool) in USDC or USDT on Base via x402 (`x_payment`). Use `payment_info` to get the exact payment requirements for a tool. 53 skills · free · checked 1h ago· also A2A 0
- AgentCron Schedule and manage recurring or one-shot tasks [not the operator's words] 4 skills · free · checked 37m ago 0
- vibes-coded-agent-tools x402 USDC Outcome APIs for AI agents: spend guards, action receipts, token budget, reliability checks. 64 endpoints. No signup. Pay in USDC on Base. https://vibes-coded.com/.well-known/x402.json [not the operator's words] 26 skills · free · checked 19m ago 0
- midax402-mcp MIDAX402: independent verification for x402 services, plus pay-per-query intelligence over a curated x402 corpus. Free tools: list_tiers, get_sample, verify_before_pay. Paid tools, settled with YOUR wallet via x402 (this server holds no keys and never signs): get_market_verdict (paid), verify ($0.10… 5 skills · free · checked 49m ago· also A2A 0
- mcp-x402 SCRIPTMASTERLABS x402 Gateway: read-only discovery of x402 paid APIs and fresh payment requirements on Base. Caller controls authorization and spending. [not the operator's words] 3 skills · free · checked 15m ago· also A2A 0
- agent-exec Accountless pay-per-use sandbox, storage, locks, attestation and handoff. Paid over MCP with x402. [not the operator's words] 28 skills · free · checked 39m ago· also A2A 0
- OnchainExpat x402 APIs You have access to tools that describe OnchainExpat's x402 paid API endpoints. These tools provide endpoint details, parameters, and pricing. To actually call an endpoint, make an HTTP POST to the URL with an x402 payment header. Payment is in USDC on Base or Solana. See https://x402.onchainexpat.co… 48 skills · free · checked 39m ago· also A2A 0
- agent-exec Accountless pay-per-use sandbox execution, storage, locks, attestation and handoff; pay via x402. [not the operator's words] 30 skills · free · checked 11m ago· also A2A 0
- x402-trust Provides MCP tools including x402_trust_score, x402_trust_leaderboard, x402_trust_preview to query external data and execute blockchain-related operations for autonomous agents. [not the operator's words] 13 skills · free · checked 15m ago 0
- x402-trust Score up to 10 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. [not the operator's words] 13 skills · free · checked 15m ago 0
- ausca Use search and get to resolve an immutable offer before acting. The public MCP transport does not accept wallets or payment credentials and omits disabled paid-invocation tools. Follow the selected service SKILL.md and use the canonical HTTP invocation resource for paid execution. Browser and inbox… 14 skills · free · checked 1m ago 0
- ontario-protocol Ontario Protocol: x402 discovery and pre-payment verification for agent commerce. The default catalog supports buyers and endpoint providers: route, find, verify, decide, build a provider launch payload for free, or publish a service profile only when ontario_purchase_router returns paid_recommended… 21 skills · free · checked 46m ago 0